2005 Vol. 13, No. 3

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Using scientific development ideology to improve the ecological province construction and circle ec onomic operation and to develop ecological economics
TENG Teng
2005, 13(3): 1-5.
Abstract(1304) PDF(814)
Abstract:
The important function of scientific development ideology．considering the people aS the centre on guiding the ecological economics，the research focal po ints of ecological economics theory are stated．It is po inted that the ecological economies should strengthen the strategic institution study of sustainable development and the ecological province construction and circle economic operation should be improved ．
An approach into the renovation and establishment in the feed-crop-ground of water-saving type in central-west grassland of Inner Mongolia Autonomous Region
SUN Hong-Liang
2005, 13(3): 6-9.
Abstract(1033) PDF(1024)
Abstract:
There is a widespread of deteriorated grassland in the central-west part of Inner Mongolia．The productivity is deereaseing in a big extent，the quality of plant population deding，the soil desertification area enlarging，the river shrinking，a large tract of oasis vegetation withering away．Since 2000，the farmlands have been returned back tO the graslands and the artificial feed-crop-grounds have been established everewhere．However，some problems also emerged ，such as theun-stabelity of artificial grasland eco-system ，the waste of water resources，the benefit of part construction being falling behind the injury in large area and lacking of the ecological safety．The strategies of renovating each part，removing the animals tO other places ，setting up the system of eco-safety of gr assland，pluralizing the industries and building up feed-crop bases of water-saving type，have been put forward．
Study on ecosystem services value of food production in China
XIE Gao-Di, XIAO Yu, ZHEN Lin, LU Chun-Xia
2005, 13(3): 10-13.
Abstract(2263) PDF(2086)
Abstract:
Field ecosystem can produce ecosystem services and economic production with the annual total value of 1950910 million yuan tO human beings contributed by natural and anthropogenic process．In the total value supported by food pro-duction，41.9％ is supplied by natural process and 58．1％ is contributed by human activities ，such as seeding，planting，ir-rigating and SO on．However，only the economic value supported by human activities and part of the ecosystem services by natural process are computed which iS 64.7％ of the total value and the rest 35.3％ of total value iS not calculated in the conventional calculation of annual output by plantation which is 688106 million yuan．According to these data，the highestlevel of public financial allowance supported by the government to food prod uction can be 5140 yuan／hm2·a．due to the public services supplied by plantation in the process of food prod uction．
Study on the occupying phenomena of ecological footprint from other regions through farm products flowing in our country—A case study from wheat
YU Ge, XIE Gao-Di, LU Chun-Xia, LIU Ai-Min
2005, 13(3): 14-17.
Abstract(951) PDF(871)
Abstract:
Taking wheat as an example，the ecological footprint，flowing characters of farm products and their driving mechanism in China are analyzed with the point view of ecology．And the occupying phenomena of the ecological function from the wheat producing area in the process of flowing，and puts out the ecological and economic risks brought by the phenomena are also put~rward and analyzed．Finally，this article suggests setting up the mechanism of ecological compensation，and improving the eficiency of resources and the price of whea t properly．
Study On ecological appropriation of Hunan Province in 2000
XIONG Ying, WANG Ke-Lin, YI Ai-Jun
2005, 13(3): 18-20.
Abstract(1312) PDF(1049)
Abstract:
With ecological appropriation method，the current situation of ecological appropriation of natural capital utilization in Hunan Province is assessed in this paper．The results show that the ecological appropriation demand per capita in Hunan Province is 1．0323hm2，and there still exists 0.4999hm2 biological prod uctive space per capita to use． Obviously，the per capita deficit of ecological footprint is 0.5324hm2 in 2000，and the development at present is isadvantageous for achieving sustainable development．
Quantitative analysis on development sustainability of ecological demonstration am — A case study from national demonstration area of Yuexi County，Anhui Province
CHENG Shu-Lan, MA Yan, XIAO Feng-Ji
2005, 13(3): 21-24.
Abstract(1146) PDF(926)
Abstract:
Based on the ease study of national ecological demonstration area of Yuexi Co unty，a set of quantified indicator system and two kinds of mathematical methods(indices weighed coupling method and fuzzy comprehensive evaluation method)are developed and explained in detail for calculating and evaluating the development sustainability in multi-temporal-spatial scales．The results show that in datum year(2000)，near future year(2005)and long-term target year(2010)，the sustainability degrees are 0．268，0．541，0.859 respectively，among which the best memberships are unsustainability (0.487)，preliminary sustainability(0.484)and sustainability(0．663)respectively；in addition，the sustainability degreesand memberships of natural subsystem are always the best among three target years．This is dovetailed with the present condition and future trend of this studied region，such as predominant environment and resources ，under-developed economy and good po tentiality．It will efficiently promote the areal sustainable development if the plan can be implemented on time．
Study 0ntheiIldex system of eco-agriculturalland evaluatiow-A csse studyfrom ShandongProvince
D0NG Jia-Hua
2005, 13(3): 25-28.
Abstract(1043) PDF(1154)
Abstract:
According to the principles in setting up index system of eco-agriculturalland evaluation．a reference index cor-pus which can be selected by diferent eco-agricultural regions is established．The principal component analysis(PCA)is used to select and optimize indexes from nineteen ones in four index groups．Finally，eleven indexes are defined as the index system of land evaluation for the eco-agricultural county.
A study on the comprehensive assessment of agro—ecosystem in the Three Gorges Reservoir Area
ZHENG Qin-Yu, LU Kun, XUE Hua-Qing, HE Yi
2005, 13(3): 29-31.
Abstract(1046) PDF(910)
Abstract:
According to the principles in setting up index system of eco-agriculturalland evaluation．a reference index cor-pus which can be selected by diferent eco-agricultural regions is established．The principal component analysis(PCA)is used to select and optimize indexes from nineteen ones in four index groups．Finally，eleven indexes are defined as the index system of land evaluation for the eco-agricultural county、
Development of organic agriculture in China—A case study from projects certified by ECOCERT
DONG Jie, MENG Fan-Qiao, LI Yan, QIAO Yu-Hui, WU Wen-Liang
2005, 13(3): 32-34.
Abstract(2184) PDF(1376)
Abstract:
The variety，base acreage and distribution of organic production，which were certified by ECOCERT in China from 1999 to 2002，are analyzed and the trend of organic agriculture in China are stated ．
Carbon fixation by farmland ecosystems in China and their spatial and temporal characteristics
LU Chun-Xia, XIE Gao-Di, XIAO Yu, YU Ge
2005, 13(3): 35-37.
Abstract(990) PDF(968)
Abstract:
The amount of carbon fixation and its spatial and temporal characteristics by farmland ecosystem are estimated and analyzed ．The results show that the total quantities of carbo n fixation increases gradually in the past two decades be-cause the carbon density per hectare increases．The East China belongs tO the area of the high value(over 3t／hm2 )and the agropastural ecotone in North China has the low value of carbon density which is less than 1t／hm2 ．Thus，the cropresidue management is the key issue for enhancing carbo n sequestration．
Effects of C02 enrichment on the allocation of biomass and C，N uptake in rice organs
MA Hong-Liang, ZHU Jian-Guo, XIE Zu-Bin, ZENG Qing, LIU Gang
2005, 13(3): 38-41.
Abstract(1422) PDF(998)
Abstract:
The effects of C02 enrichment on the allocation of biomass，C and N accumulation in rice organs under 2 levels of N were studied．The results shown that the elevated C02 decreased significantly the allocation of biomass and C content in rice leaves and increased their allocation in shoot，ear and root，decreased the allocation of N content in leaves and increased the allocation in ear．Under 1owar N and normal N trea tments。the alloc ation of N in ro t decreased by 9.67％ and 13.1％ respectively at heading stage and increased by 3.5％～ 26.6％ at other stages ．the allocation of N in shoot increased by 7.03％ and 5.71％ atjointing stage and decreased by10.5％ and 7.43％ at ripening stage respectively．There was not significant influence of N levels on the allocation of biomass，C and N in rice organs．
Research on soil fractal feature of abandoned farmland- A case study from Yijinhuoluo County．Inner Mongolia Autonomous Region
ZHANG Yu-Shu, XIE Gao-Di, XIAO Yu
2005, 13(3): 42-44.
Abstract(1064) PDF(871)
Abstract:
The changes of soil granularity and its fractal features of the abandoned land in Yijinhuoluo County，Inner Mongolia Autonomous Region in different years were studied．The results show that the soil with less fine particles has less fractal dimension and vice versa．The particle size less than 0．025mm has obvious exponential relation with fractal dimension，reflecting the degree of the land esertification．There also exist remarkable relations among the organic matter，nitrogen of the soil and fractal dimension．Therefore，the soil fractal dimens ion can be used aS an impo rtant and quantitative index indicating the degree of the land desertification and evaluating soil deterioration．
Study On heavy metal behavior characteristics of soil in citrus orchar ds of the Three Gorges Reservoir Region
HUANG Yun, ZHOU You-Liang, LI Dao-Gao, WANG San-Gen, XIE Jin-Feng
2005, 13(3): 45-47.
Abstract(1113) PDF(848)
Abstract:
The heavy metal behavior characteristics of soil in citrus orchards in Fengjie County，Zhong County，Changshou Lake，Jiangjin City of the Three Gorges Reservoir Region were studied．The results show that the content of CA in 0～30cm soil is obviously more than that in 30～60cm so il．It proves that the soil has been polluted by CA ．The heavy metal of the citrus soil in the Three Go rges Reservoir Region comes from the rock．The total content of Cu，Cr，Zn，and As in the yellow soil is much more than that in the purple so il in the citrus orchard，while the available content of Zn，CA ，Cu，and Pbin the yellow soil is much smaller than that in the purple soil in the citrus orchards．The propo rtion of available content to total content of CA in the purple soil in the citrus orchards is 30.39％ ．while that in the yellow soil is 2.30％．
Study on physical and chemical properties of flying coal ashes and the releasing patterns of silicon
FENG Yue-Hua, HURui-Zhi, YUN Jing-Qi, ZHANG Yang-Zhu, ZOU Ying-Bin
2005, 13(3): 48-50.
Abstract(1679) PDF(1236)
Abstract:
The physical and chemical properites of flying coal ashes and the releasing patterns of silicon were studied．The results show that the flying coa l ashes can be used as soil modifier because the physical sand accounts for 44.43％～98.67％ in the ashes and their volume weights are lower than those of soil and their pHs generally excess 7.5．The difference in contents of water-soluble and available silicon between the ashes and soil is not obvious，but the amount of silicon released from the ashes in 100 hours is 3．0～25．0 times as high as that in soil，so the ashes can supply the growth of rice with Si．The releasing processes of Si in the ashes and soils can be well described with Elovich equation and Freundlich equation，in which the parameters，b value and k value，can express the releasing capacity of silicon in the ashes and soils．The larger of b and k，the more silicon is released．
Effects of spraying of fertilizer Mo on the agronomic and economic properties of flue-cured tobacco in Sichuan Province
LIAO Xiao-Yong, XIANG Ming, QIN Yi
2005, 13(3): 51-53.
Abstract(994) PDF(833)
Abstract:
The effects of application of fertilizer Mo on the growth,yield,and quality of flue-cured tobacco in Sichuan Province were studied.The results show that spraying Mo in acid soil can markedly improve the agronomic and economic properties of tobacco,promote the protein and nicotine contents and decrease the content of reduced sugar of flue-cured tobacco.There is no evident effect when applying fertilizer Mo in the calcareous soil.
Effects of microbial fertilizer on the soil ecosystem and growth of cotton
SUN Zhong-Tao, YAO Liang-Tong, SUN Feng-Ming, ZHANG Gang
2005, 13(3): 54-56.
Abstract(1217) PDF(940)
Abstract:
Effects of microbial fertilizer on the soil ecosystem and growth of cotton were studied.The results show that microbial fertilizer,used alone or mixed with other organic fertilizers,can increase the total microbial biomass and improve the soil fertility.At the same time the unit weight of soil is decreased,and the cation exchange capacity,available P,alkaline hydrolysis N,and available K are increased.When microbial fertilizer is used alone,the yield of cotton increases by 19.2%,and when it is used together with organic fertilizers,the yield increases by 31.6% than CK.The efficiency of microbial fertilizer mixed with other organic fertilizers is better than that used alone.
The change of the weed biodiversity in wheat field under a long-term located fertilization
YIN Li-Chu, CAI Zu-Cong
2005, 13(3): 57-59.
Abstract(1102) PDF(28)
Abstract:
The change of the weed biodiversity in wheat field under a long-term located fertilization was studied.The results show that under different fertilization treatments,the species and relative abundance of weeds are changed,the diversity indices of Shannon's H,Shannon's E and Margalef's DMG are different.It is due to the different amounts of available soil nutrients which maybe have different impacts on the growth of different weeds.
Effects of different temperatures on the nutrient releasing characters of APEX horticultural release-controlled fertilizers
HUANG Li-Zhang, SHI Wei-Yong, LI Zhao-Jun, ZHU Su-Yan
2005, 13(3): 60-62.
Abstract(817) PDF(37)
Abstract:
The effects of different temperatures on the nutrient releasing characters of APEX horticultural release-controlled fertilizer were studied.The results show that the release ratios of three kinds of release-controlled fertilizer are affected by the temperature,and with the temperature rising,the release ratio is promoted,the release cycle is shortened,and the sensitivities of three release-controlled fertilizers on temperature are different,the evergreen plant fertilizers,expecially P and K are easily affected by temperature,the release ratio of tree plant fertilizers is affected little by temperature,its release is stable and the controlled efficiency is the best.
Effects of mixed cropping of maize and peanut on the N nutrition in cropping system
FANG Zeng-Guo, ZUO Yuan-Mei, LI Long, , HANG Fu-Suo
2005, 13(3): 63-64.
Abstract(931) PDF(35)
Abstract:
Effects of mixed cropping of maize and peanut on the N nutrition in cropping system were studied.The results indicate that mixed cropping density of maize and peanut(peanut∶maize=5∶3)has no significant effects on biomass,total N and N uptake per plant of maize and peanut,but can obviously reduce NO-3-N concentration in the rhizosphere of peanut and improve peanut nodule number and peanut nodule nitrogenase activities(ARA)per plant peanut.
Effects of different amounts of Cassia rotundifolia appended on the yield and amino acid of Tricholoma loba tense heim
LUO Tao, JIANG Zhi-He, WENG Bo-Qi, YING Zhao-Yang, LUO Xu-Hui
2005, 13(3): 65-68.
Abstract(877) PDF(28)
Abstract:
Tricholoma loba tense heim was cultured in nutritional matters appended with seven different amounts of Cassia rotundifolia.The results show that the yields of Tricholoma loba tense heim's being appended with different amounts of Cassia rotundifola are higher than that without Cassia rotundifolia,and the difference is obvious at 0.01% level.The regression equation of the Tricholoma loba tense heim' yield and the Cassia rotundifolia's amount is Y=115.9583+2.965X-0.037708X2,and the Tricholoma loba tense heim' yield reaches the maximum when the amount of Cassia rotundifolia is appended to 500g/kg of culture matters.Moreover,the relation between the total quantity of amino acid and the amount of Cassia rotundifolia appended is bally obvious,R2 is 0.9589**.The effects of appending Cassia rotundifolia on three big types of amino acid,i.e.necessary amino acid,sweet taste amino acid and enfant amino acid including eleven kinds of amino acids in the first principal component,are great,and then the total quantity of amino acid is affected.
Investigation and analysis On soil fertility of cultivated farmland in Hai’粕County，Jjangsu Pl vinoe
CHEN Bin, JI Ying-Ming, JI Xun-Feng, WU Jian-Hua, XU Xue-Hong
2005, 13(3): 72-75.
Abstract(1223) PDF(807)
Abstract:
Nearly 1000 fixed positions were investigated and analyzed in Hai’an County，Jiangsu Province．The results shoW that the cuhivated soil organic matter，total N，available P，available K increase by 9．8％ ，7．4％ ，190％ and 18．3％respectively，higher than those in 1991，and by 41．3％ ，31％ ，245．2％ and 18．6％ respectively，higher than those in 1982．The soil physical and chemical properties are improved grea tly．The evolution of soil fertility is related to the eoordi-nate development in planting，breed ing and processing，manuring of a grea t quantity of organic fertilizer，spreading of bal-anced fertilization technique，and optimizing of planting system and tillage mode in the county．
Study on limited irrigation and N fertilizer and DPC regulation for yield effect of cotton
LIU Sheng-Rong, LI Bao-Lai, JIA Tao, LIU Dang-Pei
2005, 13(3): 76-78.
Abstract(901) PDF(791)
Abstract:
Based on the experiment of limited irrigation in the plot which was surrounded with plastic film towards 1．3m of underground，limited irrigation，N application and DPC regulation were comprehensively studied in the field by rotational regression design．and the model of effect of three factors on lint yield was established．Through simulation and selection，the optimum agronomic measure for lint yield≥ 1875kg／hm2 was obtained，i．e．the amount of irrigation，N application and DPC regu lation was 678．8～ 821．4m3 ／hm2 ，285．9～ 363．4kg／hm2 and 45．8～ 51．3g／hm2 respectively． Acco rding tO the optimum growth mod el，the optimum model on proportional development and the quantitative standard for practice ex-aminat~n were achieved by selected combination program ．
优化灌溉与施肥对冬小麦冠层结构的影响研究
FAN Zhong-Xue, WANG Pu, LIANG Zhen-Xing, MARION Boening Zilkens, WILHELM Claupein
2005, 13(3): 79-81.
Abstract(1159) PDF(1041)
Abstract:

试验研究优化灌溉与施肥对冬小麦冠层结构的影响结果表明，与限量灌溉处理相比，优化灌溉和传统灌溉处理小麦最上部3个节间明显伸长，导致株高增高10cm，旗叶叶面积减小7%，但倒2叶和倒3叶叶面积分别增加7%和20%；优化灌溉处理小麦旗叶茎叶夹角明显减小。与未施N肥处理相比，施用N肥有增大小麦株高、叶面积和茎叶夹角的趋势，且传统施N比优化施N更加明显。优化水N管理麦田各层次透光率与传统处理差异较小，但它们均显著低于限量灌溉和未施N处理。
旱稻农田土壤水分变化特征研究
YANG Jie, YANG Xiao-Guang, WANG Hua-Qi, WANG Pu, Bouman B.A.M.
2005, 13(3): 82-86.
Abstract(884) PDF(549)
Abstract:

试验研究旱稻不同灌溉处理土壤水分变化特征结果表明，不同供水条件下农田土壤水分变化的主要层次均为80cm以上，120cm以下土层土壤水分处于相对稳定状态，且维持在相对较高水平；供水较多时旱稻水分耗散量、耗水强度也较大，而相同供水条件下旱稻水分耗散量和耗水强度又小于水稻对照；相同灌溉处理旱稻产量和水分利用效率均高于水稻对照；而充足供水有利于旱稻根系在0～20cm表层发育，但不利于其根系在下层生长，而W2可促使根系下扎，更充分利用下层水分。
Study on the general properties of runoff solid from sloping field in red-soil upland
HUANG Dao-You, CHEN Gui-Qiu, LIU Shou-Long, Zhang Guang-Ping
2005, 13(3): 87-90.
Abstract(907) PDF(776)
Abstract:
he results show that 80% of the soil particles in the runoff solid is silt and clay in the sloping field of red soil.Compared with the particles in surface soil,the amount of sand in runoff solid decreases by 24.3%～30.8%,while the amount of silt increases by 11.4%～15.9% and the amount of clay is similar.The changes of particle components respond to various managing patterns during 1993～2001.In runoff solid,the amount of sand in 2001 is 30.0%～53.8% lower than that in 1993,while the amounts of silt and clay are 18.0%～21.2% and 3.8%～9.4% higher than those in 1993,respectively.The silt-increasing in runoff solid is significant in the multiple cropping system of rape-maize/sweet-potato,while silt-increasing and clay-increasing in runoff solid are significant in the vegetative cover structure of arbor-shrub-grass.The nutrient enrichment rates in both managing patterns show that water extractable N＞available K＞available P≥total N＞total K≥total P＞organic matter.Moreover,all the enrichment rates decrease significantly with the improvement of soil fertility.In runoff solid,most of the organic carbon enriches in the soil particle whose diameter is 0.05～0.001mm,N in the particle whose diameter is ＜0.01mm,K in the particle whose diameter is ＜0.005mm.Each nutrient enrichment amount accounts for over 73.5% of the relevant enrichment amount in runoff solid.P is distributed in various particles.
A study On the variation and forecasting m odels of groundwater level an d draining waterlogging in cultivated soil layersin the Jianghuai Valley
ZHANG Jia-Hua, MAO Fei, JIN Zhi-Qing
2005, 13(3): 91-94.
Abstract(1255) PDF(1054)
Abstract:
The annual and interannual variances of groundwater level and the relationships among the groundwater level and the initial soil moisture，the initial groundwater level，temperature，sunshine，reference crop evapotranspiration，evapo-ration，precipitation in the Jianghuai Valley were analyzed．The forecasting models of groundwater level were built with step regr ession method ，the degrees of providing water were calculated with relative analyses method and the draining wa-terlogging mod el in cultivated soil layers was built．
Changing laws of chlorophyll content and photosynthetic rate in winter wheat leaves
ZHANG Qiu-Ying, LI Fa-Dong, LIU Meng-Yu
2005, 13(3): 95-98.
Abstract(3183) PDF(3094)
Abstract:
The changes of chlorophyll content and photosynthetic rate in wheat leaves from different water treatments were studied．The results show that the chlorophyll content of winter wheat leaves has a decreasing tendency under water stress and chlorophyll b content declines obviously．The changing trends of chlorophyll content and photosynthetic rate under different water stresses and seasons aye identical basically．They increase from jointing stage to booting stage and decrease at milking stage，moreover the correlation between chlorophyll content and photosyn thetic rate is positive．Yield and economical coefficient of winter wheat decline with a strong water stress．
Effect of paper cone shading on preventing apple fruits from sunburn
ZHANG Jian-Guang, LIU Yu-Fang, SUN Jian-She, LARRY Schrader
2005, 13(3): 99-100.
Abstract(1122) PDF(944)
Abstract:
Experimental study shows that the paper cone shading of fruits in periphery of tree crown can significantly reduce the light reception by 2/3 by fruit,resulting in a decrease of fruit surface temperature(≥7℃).So the sunburn percentage is lowered dramatically.In addition,the paper cone shading should be conducted in mid or late May for the fruit on southwest canopy.In the areas where sunburn app ears frequently,partly or completely shaded fruits should be remained during fruit thinning.
A quantificational study on the relationship between saccharide content of medlar and surrounding factors
ZHANG Xiao-Yu, LIU Jing, YUAN Hai-Yan
2005, 13(3): 101-103.
Abstract(1902) PDF(1435)
Abstract:
Based on the data of medlar sampling in Northern China,the quantificational relationships between saccharide content of medlar and soil nutrient,and meteorological factors were analyzed.The results show that saccharide content of medlar is determined by both soil nutrient and weather condition.Main factors which affected saccharide content of medlar include alkaline hydrolysis N,available K,pH and organic matter in soil,as well as weather condition during madlar fruits forming stage such as maximum temperature,minimum temperature,sunshine hours,rainfall and accumulated temperature,etc.Compared to soil nutrient,the weather factors have greater effect on saccharide content of medlar.
Study on the tissue anatomy on the pericarp of Juglans Regia L
WU Guo-Liang, LIU Yan, SHEN Yuan-Yue, ZHANG Da-Peng
2005, 13(3): 104-107.
Abstract(1205) PDF(1151)
Abstract:
The tissue structure of the pericarp of Juglans regia L.may be divided into three parts,i.e.exocarp,mesocarp and endocarp.The development stage can be divided into the early stage and late stage.The exocarp is consisted of lays of cells.There are numerous glandular hairs in the epiderm cells in the early stage and the corneous layer cells and stomata are developed in the late stage.The spots in fruit surface are different in the different varieties and positions of fruit.The mesocarp is the main parts of pericarp,and there are vascular bundles in it.The boundary lines between exocarp,mesocarp and ndocarp are not clear in the early stage,but the numbers of vascular bundles increase and the branches appear,as well as the parenchyma cells are enlarged in the late stage.The cells of endocarp is small and transparent in early stage,and changes into hard shell that is made of lignification stone cells.The tissue of vascular bundles is developed and becomes ereticulate vein.
Research progress of allelopathy in rice
XIANG Yan, HE Hao-Hua, FU Jun-Ru
2005, 13(3): 108-111.
Abstract(1161) PDF(1252)
Abstract:
The research progress of rice allelopathy including the allelopathy between rice and other plants, allelochemicals isolation and identification, allelopathic phsiobiochemical characteristics of rice, allelopathic breeding, rice allelopathy and sustainable development of agriculture is summarized in this paper.
Cloning and sequence analysis of chloromuconate cycloisomerase gene
ZHONG Wen-Hui, HE Guo-Qing, SUN Ming, YU Zi-Niu, FENG Xiao-Shan
2005, 13(3): 112-115.
Abstract(1072) PDF(840)
Abstract:
A 2,4-dichlorophenol degrading Pseudomonas strain GT241-1 was isolated from a soil sample. The chloromuconate cycloisomerase gene, designated as dcpC which encodes chloromuconate cycloisomerase involved in transforming 2,4-dichloro-cis,cis-muconate into trans-2-chlorodienelactone,was cloned from this bacterium strain.The gene cloning strategy was to construct genomic library after location of its neighbouring gene by Southern blot and to screen the aim transformant by dot blotting.Sequencing results show that the length of dcpC is 1110bp.The sequence analysis of dcpC and the deduced amino acid show that dcpC belongs to chloromuconate cycloisomerase gene family and is different from other genes in the gene family.
Toxicity of salinity and alkalinity to　Lateolabrax japonicus fingerlings
ZHENG Wei-Gang, ZHANG Zhao-Qi, ZHANG Mei-Zhao, DONG Shuang-Lin, ZHANG Qing-Tian
2005, 13(3): 116-118.
Abstract(1591) PDF(1125)
Abstract:
Acute toxic experiments are carried out to test the tolerance of Lateolabrax japonicus to salinity and alkalinity.The median lethal concentrations (LC50 values) of alkalinity (pH=8.44±0.16) to Lateolabrax japonicus fingerlings are 101.05mmol/L，63.27mmol/L,56.85mmol/L and 46.18mmol/L in 24h,48h,72h and 96h;sal-alkalinity mixture tests show that the 24h LC50 values of alkalinity to Lateolabrax japonicus vary with salinity.The relationship between them is ALK=125.05-2.18S(n=7,r=0.9756).There is probably an interaction between salinity and alkalinity to some degree.
Study on the ecological effect in wheat field of different planting patterns
WANG Xu-Qing, WANG Fa-Hong, DONG Yu-Hong, YU Zhen-Wen, LI Zeng-Jia
2005, 13(3): 119-122.
Abstract(1050) PDF(832)
Abstract:
The ecological effects in wheat field of different planting patterns were studied.The results show that the soil bulk density of bed-planting is lowed significantly,and soil porosity is improved correspondingly.As far as soil respiration intensity,20～40cm of bed-planting is the highest,then 20～40cm of conventional flat planting,and 0～20cm of both,the lowest.The irrigation water amount received in deep soil layer in bed-planting is more than that in conventional flat planting,and the water use efficiencies in bed-planting are 1.62kg/m3 and 1.56kg/m3 and are improved by 21.8% and 16.4% respectively,higher than those in conventional flat planting of two cultivars.The air humidity inside wheat plant in bed-planting is lowed by 3.5%～15.5% than that in conventional flat planting and the solar energy use efficiency of grain and dry matter yield are increased by 10.0%～13.2％ and 10.3%～10.8% respectively,the colony transparent rate of bed-planting is higher than that of conventional flat planting in the same cultivar but in different planting patterns.
Application of COTTON2K in the precision planting management of cotton in Xinjiang
YANG Yan-Min, LIU Xiao-Jing, 0UYANG Zhu
2005, 13(3): 123-126.
Abstract(1079) PDF(1020)
Abstract:
The characteristics of cotton growth simulation model COTTON2K were briefly introd uced．Validation tO COTTON2K was done by using the cotton data of Xinjiang in 2002 and 2003 and the problems in the validation are put forward.
Study on the cultivation and utilization of fine green manure of Phaseolus calcalatus Roxb．in the tropical areas of southern Yunnan Province
WANG Hui-Hai, LI De-Hou
2005, 13(3): 127-129.
Abstract(1089) PDF(780)
Abstract:
The research results show that the treatment with the green manure of Phaseolus calcalatus carl increase the grain yield and biomass of upland rice and grain yield of corn by 42．86％ ，70．77％ ，and 19．28％ respectively compared with control treatment；it can improve the soil fertility，the organic matter，total N，total P and total K content in 0～ 1 0cm soil layer are 26．34g／kg，1．98g／kg，0．08g／kg and 18．2g／kg，increased by 4．84g／kg，0．32g／kg，0．01g／kg，and 3．9g／kg respectively compared with the control treatment；as the cover crop betwen the rows of rubber trees in young rubber plantation，it can avoid the erosion of surface soil in plantation；as the fine fodder of the livestock，the leaf of haseolus calcalatus contains abundant nutrition(134．0g／kg coarse protein，184．7g／kg coarse fibre，32．0g／kg coarse fat，and 64．6g／kg c0arse ash)．and 18 kinds of amino acids(87．3g／kg)．
Effect of conservation tillage and straw application on the soil microorganism and P-dissolving characteristics
FAN Bing-Quan, LIU Qiao-Ling
2005, 13(3): 130-132.
Abstract(1225) PDF(909)
Abstract:
The effects of conservation tillage and straw application on the soil microorganisms and P-dissolving characteristics were studied．The results show that minimum tillage has a good effect on the microbial carbon，zero tillage and straw application can increase the ergosterol level and accumulation of organic-C in soil．The soil organic-C levels have no significant differences in different tillage modes ．Straw application can increase the soil organic-C content，zero tillage can increase the population of soil microorganisms，deep tillage shows a lower po pulation of soil microorganisms．The microrganismamount of straw application is significantly higher than that without straw application．M inimum tillage have a higher poPulation of soil micro rganisms，zero tillage shows a lower po pulation of P-dissolving microrganism ，minimum and zero tillages promote the development of high efficient P-dissolving strain．Crop residues can enhance the po pulation of phosphate solubilizing micro rganism ，and development of higher efficient strain of P solubilization．
Selection of dominant bacteria for phosphate liberation in calcareous soil
GAO Chun-Hua, WANG Gang, D0NG Yun-Zhong, JIAO Xiao-Yan, ZHANG Nai-Ming
2005, 13(3): 133-135.
Abstract(916) PDF(919)
Abstract:
B2 and 1367 were identified as two best bacteria to promote phosphate liberation from crops rhizos phere．During incubation in culture media with B2 and 1367，the phosphate dissolved circles in plate culture，i．e．D／d values ，are 5．1 and 3．8 respectively for B2 and 1367．More than one kind of organic acids，including malic acid，malonic acid，oxalic acid and lactic acid，are produced and the total amount of acid is 28．25 and 19．78 times of control，respectively．Further the pH of culture media decline 2．3 and 1．1 units，respectively．W hen four soil samples，collected from different areas，are incubated with the above culture med ia for 20 days under the conditions of constant temperature and humidity，available phosphate in four soil samples is enhanced by B2 and 1367．Available phosphate contents are 2．64，3．04，1．71 and 2．20 times of four control samples ，respectively when the abo ve four soil samples are incubated with B2；whereas available phosphate contents are 2．12，1．90，1．35 and 1．78 times of four control samples ，respectively when the abo ve four soil samples are incubatedwith 1367．Also it is found that phosphate lyolysis is positively related to the available number of bacteria an d phosphatase activity in soil．
Effect of inoculation of arbuscular mycorrhizal fungi and Rhizobium on the P uptake in faba bean ／maize intercropping system
LI Shu-Min, LI Long, ZHANG Fu-Suo
2005, 13(3): 136-139.
Abstract(1582) PDF(1098)
Abstract:
Pot experiments with different root separations were conducted tO study the efect of inoculation of arbuscular mycorrhizal(AM)fungi and Rhizobium on the organic P uptake in faba bean／maize intercropping system．The results show that P uptakes by faba bean and maize inoculated with AM fungi are increased by 138． 1％ and 82．3％ compared with the contro1．Symmetrical efect on organic P uptake is observed when faba bean is inoc ulated with AM fungi and Rhizobium ．The number of nodules ，weight of nod ules and mycorrhizal colonization of faba bean are significantly increased．At the same time the growth of the associated maize is significantly facilitated due tO the improvement of nutrition condition．
Analysis on the species diversity of cyanobacteria in paddy field by comparison between norm al culture and DGGE method
SONG Tie-Ying, LIN Zhi-Min, ZHENG Wei-Wen, LOTTA Martensson, ULLA Rusmussen
2005, 13(3): 140-143.
Abstract(1137) PDF(963)
Abstract:
Segments of 1 6S rDNA genes from cyanobacteria were retrieved from paddy field samples by DNA extraction and polymerase chain reaction(PCR)，and subsequently analyzed by denaturing gradient gel electrophoresis(DGGE)．The cyanobacterial community was analyzed in the rice paddy field by nested PCR using universal 1 6S rDNA primers and subsequently primers targeting cyanobacterial specific regions in the 1 6S rDNA genes．The amplified products were analyzed by denaturing gradient gel electrophoresis(DGGE)．14 dominating bands were excised from the gels and further sequenced and determined by BLAST search against the GenBank database．10 bands were identified as cyanobacteria，representing 6 different cyanobacerial genera．4 of the bands were identified as belonging tO the genus Leptolyngbya，1 tO the genus Nostoc，2 tO the genus Synechococcus，and 1 tO each of the genera Oscillatoria，Chroococcidiopsis and Chamaeaiphon，respectively．The cyanobacterial diversity varied both in the upper and the deeper soil fractions and different sampling points．Lyngbya，Oscillatoria，Chroococcidiopsis and Nostoc were identified under microscope by normal culture method，but can not be identified exactly，indicated that DGGE method can reflect the complex and dynamic of cyanobacteria in the community．
Study on virulence genes of population of Puccinia recondtia f．sp．tritici in different wheat ecological areas of Shanxi
YUAN Zong-Ying, wU Ying-Peng, LI Yan-Fang, ZENG Wei-Fang
2005, 13(3): 144-146.
Abstract(1439) PDF(880)
Abstract:
The virulence gene frequencies of population of Puccinia recondita f．sp．tritici of wheat in Shanxi Province were analyzed．The results indicate that the appearances of virulence genes of V19，V24 and V38 are lower with the frequencies of 5.8％，11.3％ and 0.0％ respectively．Their corresponding resistant genes may be used as effective resistant genes．Among the 43 detected pathotypes ，the frequencies of THT，TRK，TRT，THK and PHT are 17.8％，14.4％，11.0％，8.2％，7.5％ respectively，and they are prevailing pathotypes of Puccinia recondita f. sp．tritici in Shanxi Province at present．
Amount and spatial dynamics of population of　Bemisia tabaci(Hemiptera:Aleyrodidae) in different host plants
ZHANG Li-Ping, ZHANG Gui-Yun, LIU Zhen, ZHANG Wen-Ji
2005, 13(3): 147-149.
Abstract(967) PDF(904)
Abstract:
The population dynamics of Bemisia tabaci (Gennadius) in different host plants were studied.The results indicate that the times in which the populations of B.tabaci on different hosts increase to a peak are different,the ranges of population wave are also different,the order of population densities of B.tabaci on different hosts is sunflower＞pumpkin＞cotton＞soybean＞cushaw＞eggplant＞hechima＞tomato＞chili＞cucumber＞kidney bean＞corn,which indicates that B.tabaci to host-plant has definite nature selectivity.Spatial distributions of B.tabaci in cotton,sunflower and soybean fields are studied by using C=S2〖KG-*3〗/〖KG*4〗〖AKX-〗，and they are of collective distribution type.
Prediction of the natural population dynamics of Spodoptera litura Fabricius
DING Jian, QIN Hou-Guo, YE Zheng-Xiang, HUANG Shui-Jin, LUO Ren-Hua
2005, 13(3): 150-152.
Abstract(1347) PDF(721)
Abstract:
Depending on the mathematical relationship between the development period and temperature,the survival rate of egg and larvae in fields and the relationship between egg and date,a dimension-changable matrix model was established to predict the natural population dynamics of Spodoptera litura F.in cabbage fields in the suburbs of Nanchang City.The trends of the population dynamics of the observed and predicted are quite similar.
Controlling tactics of the insect pest and diseases of tomato in sunlight greenhouse
HE Xian-Lin, YANG Guo-Qiang, JIANG Zhi-Jun, LI Quan-Shuan, ZHANG Wei-Liang
2005, 13(3): 153-155.
Abstract(795) PDF(735)
Abstract:
The growth traits,the insect pest,and diseases of tomato in ecosystem of sunlight greenhouse are analyzed.The controlling tactics such as improving the environment,using cultivation method of healthy seedling,comprehensively preventing the insect pest and diseases,putting pesticide rationally are put forward.
Controlling tactics of the insect pest and diseases of tomato in sunlight greenhous
LIN Tian-Miao, HUANG San-Xiang, QUAN Chang-Ming, LUO Ju-Chun, WANG Li-Xin
2005, 13(3): 153-155.
Abstract(918) PDF(892)
Abstract:
The growth traits，the insect pest，and diseases of tomato in ecosystem of sunlight greenhouse are analyzed．Thecontrolling tactics such as improving the environment，using cultivation method of healthy seed ling，comprehensively pre—venting the insect pes t and disea ses ，putting pes ticide rationally are put forward．
Comprehensive control strategies for locust disaster in beach land of Xiao Langdi reservoir along the Yellow River
CAI Chun-Ju, WANG Cheng, WANG Huai-Xun
2005, 13(3): 156-157.
Abstract(1135) PDF(840)
Abstract:
The status of locust disaster in beach land of Xiao Langdi reservoir along the Yellow River is summarized.Comprehensive control strategies for locust disaster are put forward,i.e.to develop beach land mainly with the plantation of forest in order to improve its ecological environment.
Effects of selective cutting of different intensities on the tree layer structure and species diversity of evergreen broadleaved forest
QIU Ren-Hui, CHEN Han
2005, 13(3): 158-161.
Abstract(1248) PDF(856)
Abstract:
The effects of selective cutting of different intensity on the tree layer structure and species diversity of evergreen broadleaved forest(low intensity,13.0%;middle intensity,29.1%;high intensity,45.8%;over-high intensity,67.1%) were surveyed and analyzed.The results show that the selective cutting of low and middle intensities caused a light variation to the tree layer structure,but the selective cutting of high and overshigh intensities caused changes of the tree layer structure to some extent.The cutting operation results in adverse influences on the development of tree layer species diversity of evergreen broadleaved forest,particularly the serious damage to the forest canopy caused by selective cutting of high intensity.But the rational selective cutting benefits the restoration and maintenance of species during a long time,which may result from the different variations of such environmental factors as sunlight,temperature and humidity,etc caused by cutting operation.
Dynamic characteristics on tempo-spatial of forest landscape in Fujian Province
YAN Shu-Jun, HONG Wei, WU Cheng-Zhen, BI Xiao-Li, LAN Si-Ren
2005, 13(3): 162-164.
Abstract(1009) PDF(856)
Abstract:
The indices of diversity,dominance and evenness of forest landscape in Fujian Province were analyzed.The results show that from 1987 to 1997,the indices of diversity and evenness of forest landscape increase from 1.727 and 0.786 to 1.884 and 0.857 respectively,while the index of dominance of forest landscape decreases from 0.470 to 0.313.There is a increasing tendency of the indices of diversity and evenness of forest landscape from the southeast to the northwest of Fujian Province,but the index of dominance of forest landscape gradually decreases from the southeast to the northwest．
A study of Cyclobalanopsis glauca community feature in Gutian Mountain Nature Reserve Zone in Zhejiang Province
HU Zheng-Hua, YU Ming-Jian, DING Bing-Yang, FANG Teng, QIAN Hai-Yuan
2005, 13(3): 169-171.
Abstract(809) PDF(676)
Abstract:
The features and special diversity of the Cyclobalanopsis glauca community in Gutian Mountain Nature Re-serve Zo ne of Zhejiang Province were analyzed．The results show that there are various plants in the community of Cyclobalanopsls glauca，and their floral compositions are complicated ．In term s of genus geographical elements，many of them are distributed in tropical zones ．According tO Raunkiaer’S statistics of life-form ，the life-form phaenerophyte of this com-munity numbers first．The fea tures of the community leaf is mainly microphyll，simple，leathery and unentlre．The specialdiversity index of different layers shows that shrub layer>tree layer> herb layer，and the special abundance and diversity index of shrub layer and tree layer are higher significantly than those of herb layer．
Research on rainfall-infiltration processes under artificialRobinia pseudoacacia plantation and afforestation technology in the slope of low-land in Taihang Mountains
YANG Fan, LIU Zhi-Jun, MA Zhong-Qiu, ZHANG Wan-Jun, TANG Chang-Yuan
2005, 13(3): 172-174.
Abstract(1022) PDF(939)
Abstract:
Rainfall-infiltration processes under artificial Robinia pseudoacacia plantation and afforestation technology in the slope of low-land in Taihang Mountains were studied.The results show that the water potential in 10～30cm soil section quickly increases to maximum with rainfall and decreases gradually after rainfall stops.With infiltration,the wetting peak gradually moves ahead.Curve of water potential changes from steep to slow.Comprising the water potential variation in different vegetations,infiltration velocity is slower in forest land than that in naked land at the beginning of rainfall.With rainfall going on,the speed of wetting peak moving ahead in forest land is quicker than that in naked land.Litters and vegetations slow down the lateral and subsurface flow and increase the one- dimensional vertical infiltration.
Studies on the cutting propagation of Taxus chinensis var.mairei.Ⅲ.Effects of foliage fertilizer and transparency on growth of the cut seedlings
FU Rui-Shu, SUN XiaoDong, HUANG QI, ZHU Jian-Hua, XU Lu-Xia
2005, 13(3): 175-177.
Abstract(1068) PDF(866)
Abstract:
Effects of foliage fertilizer and transparency on the growth of the cutting of Taxus chinensis var.mairei were studied.The results show that the effects of foliage fertilizer on the growth and chlorophyll content of the cut seedlings are positive,but the effects of transparency on that are negative.In addition,the efficiency of foliage fertilizer is obvious stronger than that of transparency.Growth indicators of new log,plant fresh weight and root fresh weight in the cutting are accelerated distinctly by application of foliage fertilizer,and so is the content of chlorophyll a,chlorophyll b and total chlorophyll.Differences between application and in application of foliage fertilizer are significant.Only in the condition of application of foliage fertilizer,the differences of the growth indicators and chlorophyll content between transparencies of 40% and 80% are significant,the differences of part indicators between transparencies 40% and 60% or 60% and 80% are significant. Without the application of foliage fertilizer,a significant difference of chlorophyll content is observed in some transparency treatments,but no significant difference is observed in the growth indicators in all transparency treatments.
Studies on the cutting propagation of Taxus chinensis var.mairei.Ⅳ.Effects of rooting powder on the rooting of the cutting
FU Rui-Shu, HUANG Qi, SUN Xiao-Dong, HUANG Xue-Ling, XU Lu-Xia
2005, 13(3): 178-180.
Abstract(929) PDF(1031)
Abstract:
Effects of rooting powder on the rooting of the cutting of Taxus chinensis var.mairei were studied.The results show that rooting powder A3 is the best,the days of first root appearance,rooting rate,number of root,length of root and index of root system for A3 are 52.7～64.0d,90.0%～93.7%,8.00～8.67,8.67～8.93cm and 0.61～0.69,which are much better than those of the other three types of rooting powder.The second is the rooting powder A2,Gibberellin is the poorest.The experiment of concentration show that no significant difference is observed between various concentrations for A2 and A3 except the concentration of 20ng/kg for A1.But a significant difference in index of root system is observed between the concentrations of 20ng/kg and 15ng/kg or 20ng/kg and 10ng/kg.The concentration of 20ng/kg is better than the other two concentrations for A2.It is possible that the increment of the applied concentration of A1 and A2 will increase the rooting efficiency.
The breeding and cultivating techniques of Ligustrum robustum
YANG Li-Dan, WANG An-Wen
2005, 13(3): 181-182.
Abstract(1252) PDF(1008)
Abstract:
The breeding and cultivating techniques of Ligustrum robustum were studied.The results show that the seeds stored in the sand in cellar can be sown in March 2 and sprouted in the last ten day of April with a germination rate of 80%, an annual and average plant height of 62.3cm and an average radical diameter of 0.58cm;as the asexual breed,the effect of cuttage in autumn is better and the survival rate of short branches of wild spikes reaches 43.7% being 13.7% and 38.7% higher than those in spring and summer;the survival rate of germinated short branches of cuttage in autumn is 88.5% being 46% and 73.7% higher than those in spring and summer.On the forest land returned from the cultivated land,its suitable cultivated distance of plantlets and rows is from 0.8m×1.5m to 0.6m×1.5m and its suitable cultivated density is 8325～11100 plantlets/hm2 while on the barren hill side and uncultivated land ,they are 0.6m×2m and 8325 plantlets/hm2 respectively.
Practice of organic tea in China
LIU XIN, FU Shang-Wen, ZHANG You, SHU Ai-Min, WU Zhi-Xiang
2005, 13(3): 183-185.
Abstract(904) PDF(1154)
Abstract:
The development status,benefit and sustainable development strategies of organic tea in our country are stated in this paper.
Environmental economic policy designed to control watershed agricultural non-point pollution—A case study from Jiulong River Watershed of Fujian Province
LIU Jian-Chang, CHEN Wei-Qi, ZHANG Luo-Ping, HONG Hua-Sheng
2005, 13(3): 186-190.
Abstract(1103) PDF(1093)
Abstract:
The necessity and feasibility of special environmental economic policies to control agricultural non-point source pollution were briefly analyzed.Facing serious non-point pollution in Jiulong River,several kinds and formats of economic policies were put forward,i.e.feeding taxes,emission taxes,and tradable permits on livestock and poultry;taxes,charges,subsidies and insurance of using fertilizer and pesticide;subsidies of quitting cultivation and deposits for soil and water conservation;funds and tradable permits (quota) in the whole watershed,etc.The cost-effectiveness analysis and the feasibility of these applied policies are discussed.
Monitoring and evaluation of sewage quality in Heilonggang Region
LI Ke-Jiang, CAO Cai-Yun, ZHENG Chun-Lian, WANG You-Zeng
2005, 13(3): 191-193.
Abstract(913) PDF(1095)
Abstract:
Using the methods of single and multiple indexes,the sewage quality in Heilonggang Region was monitored and evaluated.The results show that the water is polluted seriously and the most important polluted factor is the heavy mental.The contents of Pb,Cd and Hg are the highest, being 3～23 times of the national standard.It is not suitable for agricultural irrigation.
Study of three aquatic floating plants to treat the water eutrophication
LOU Min, LIAO Bo-Han, LIU Hong-Yu, ZOU Ya-Zhu
2005, 13(3): 194-195.
Abstract(1402) PDF(1296)
Abstract:
Three aquatic floating plants,Lemma polyrhiza L.,Pistia stratiotes,and Eichhornia crassipes,to treat the water eutophication were studied. The results indicate that these three plants can reduce the N and P,increase the dissovled oxygen,and restrain the growth of algae efficiently in eutrophication waters;however,the sequence of treating efficiency is Pistia stratiotes＞Eichhornia crassipes＞Lemma polyrhiza L.Pistia stratiotes and Eichhornia crassipes have strong abilities to suit the various environment,and the growth of Pistia stratiotes is easily to control.Therefore,Pistia stratiotes is recommended as a preferable aquatic floating plant to treat eutrophication waters.
The industrial utilization is the essential way to solve the problem of agricultural stalks
SUN Ming-Hu, XIAN Hui-Jun, NAN Fang
2005, 13(3): 196-198.
Abstract(1211) PDF(1175)
Abstract:
The utilization status and existing problems of crop stalks in our country are stated.And it is pointed out that the industrial utilization is the essential way to solve the problems of agricultural stalks and some countermeasures are put forward.
Analysis on the deterioration of eco-environment in our country
HE Jian-Lin, CHEN Gui-Xiang
2005, 13(3): 199-201.
Abstract(1102) PDF(1214)
Abstract:
The reasons of the deterioration of eco-environment in our country are stated,i.e.the deterioration of eco-environment is of long standing because our country is an old and large agriculture country.The high-speed growth of the population since Ming and Qing dynasty causes a great pressure to the eco-environment in our country;lack of full realization of the naturally ecological law and the impatience for success of the economic construction cause the faults in the strategy and decision in our country;the imperfect of the eco-environment;current national business accounting system that is deficient and backward in technique causes excessive consumption and serious waste of resource environment;the dim environmental awareness for a long time restrains the people from being correct to know the ecocrisis issue in our country too.
Research on pattern for biology utilization and agriculture development in Dongting Lake wetland
QI Heng
2005, 13(3): 202-204.
Abstract(831) PDF(1093)
Abstract:
The biodiversity characteristics in Dongting Lake wetland and the existing problems for its exploitation and utilization are stated.It is pointed out that the laws and science research of wetland should be strengthened and the regulations of ecological complement of Dongting Lake wetland,the scientific and rational biology utilization mode and the industry structure having wetland characteristics should be established.
Countermeasures of the development of eco-agriculture in Jiangxi Province
WEI Yi
2005, 13(3): 205-207.
Abstract(934) PDF(1782)
Abstract:
The development status,the principal model and the benefit of the eco-agriculture in Jiangxi Province are analyzed,and some countermeasures for the development of eco-agriculture are put forward.
研究报告
羽叶决明添加沼渣对大球盖菇产量与品质的影响
WENG Bo-Qi, YING Zhao-Yang, LUO Xu-Hui, JIANG Zhi-He
2005, 13(3): 69-71.
Abstract(720) PDF(419)
Abstract:

试验研究结果表明，豆科牧草羽叶决明与稻草、木屑及沼渣不同混合培养料对大球盖菇子实体产量及其氨基酸含量的影响各异，以羽叶决明+沼渣混合培养料(处理Ⅰ)栽培大球盖菇，其子实体产量比处理Ⅱ(稻草+沼渣)和处理Ⅲ(稻草+木屑)分别提高12.5%及29.4%；而其子实体氨基酸总量、必需氨基酸、儿童氨基酸、硫氨基酸、支链氨基酸、鲜味氨基酸和甜味氨基酸含量分别高于处理Ⅱ、处理Ⅲ 32.02%、134.37%，45.67%、101.07%，51.69%、112.88%，19.33%、74.92%，45.96%、102.01%，62.50%、315.86%和32.31%、84.55%；其子实体中芬香族氨基酸含量比处理Ⅱ降低48.78%，但比处理Ⅲ提高92.7%。总体评价处理Ⅰ氨基酸评分(AAS)为61，氨基酸比值系数分为78.9，均高于处理Ⅱ和处理Ⅲ，有助于提高菇类品质。

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