1999 Vol. 7, No. 3

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1999, 7(3): 1-4.
Abstract(1064) PDF(1071)
Abstract:
1999, 7(3): 1-3.
Abstract(776) PDF(772)
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1999, 7(3): 4-5.
Abstract(821) PDF(780)
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Roles of soil water in regulating root growth and distribution
Feng Guang-long, Liu Chang-ming, Wang Li
1999, 7(3): 5-9.
Abstract(2533) PDF(1328)
Abstract:
Features of dynamic responses of root growth and distribution to soil water conditions,especially to water stress conditions and irrigation regimes as well as the relationship of root with shoot growth,grain yield and water use efficiency are reviewed with methods and ideas in root regulation for high yield and water-saving presented in this paper.
Strengthen water and soil conservation for harnessing water flood
He Nai-wei, Yin Xiao-qing
1999, 7(3): 6-10.
Abstract(912) PDF(815)
Abstract:
A comparative research on features of the two catastrophic floods along the Changjiang River valley in 1954 and in 1998 was introduced.Among the analyses,the situation of water stage exceeding historical records during the floods is specially focused.The basic reasons for resulting in the record--breaking water stage of the floods are that the forestry resources along the Changjiang River valley have heen destroyed and the ecological environment of the upper reaches of the Changjiang River valley has steadily deteriorated.And some suggestions are put forward that the only construction of flood-control projects could not prove effective for flood-control;it is strengthened that an integration of the key projects for flood-control and the projects for water and soil conservation of the upper reaches along the Changjiang River valley could fulfil the task of flood-control and maintain sustainable development.
Progresses in efficiently utilization of potassium in soil by plant
Zou Chun-qin, Li Zhen-sheng, Li Ji-yun
1999, 7(3): 10-14.
Abstract(1162) PDF(1050)
Abstract:
The status of K sources,new ways to improve K efficiency and physiological and genetics studies of differences in K nutrient characteristics of plants are discussed for the pourposes of providing theoretical basis for breeding new varieties which can efficiently utilize K-fertilizer and tolerate K-deficiency.
Supply and demand of water resources and analysis of crop water use efficiency in the North China Plain
Wang Hui-xiao, Liu Chang-ming
1999, 7(3): 11-15.
Abstract(1461) PDF(814)
Abstract:
The shortage of water and the falling of ground water level are important factors limiting sustainable agricultural development in the North China Plain(NCP).Researches include supply and deman of water resources in the NCP,the connotation of water resources utilization based on sustainable agriculture,indicators and their quantification of field crop water use efficiency while the regulating indicators have been analyzed.It provides scientific basis for efficient water use and sustainable management of water resources in the NCP.
Agricultural structure patterns for water and soil conservation in mountain region_A case study from the upper reaches of Ba River in Luotian County in Dabie Mountain Region
Tan Chuan-feng, Li Jia-cheng
1999, 7(3): 15-20.
Abstract(1150) PDF(952)
Abstract:
Based on the studies of the natural environmental structures in the upper reaches of the Ba River in Luotian County,the different harnessing zones were divided and the harnessing patterns for optimization of the structures of agriculture and forestry were set up,and their benefits were demonstrated with emphasis on soil and water conservation.
Physical and chemical indicators of soil health diagnostics and its application
Hu Chun-sheng
1999, 7(3): 16-18.
Abstract(984) PDF(1009)
Abstract:
A set of physical and chemical indicators of soil health diagnostics and their assessment procedure and method established by Commonwealth Science and Industry Research Organization(CSIRO) has been introduced.Based on the method,physical and chemical characteristics of soil quality(health) diagnostics in Taihang Mountain piedmont have been analyzed.And quota systems of experience,morphology,physics and chemistry target to evaluate soil quality in the region are put forward.
Preliminary study on magnetic susceptibility of saline soil
Mao Ren-zhao, Fitzpatrick R.W.
1999, 7(3): 19-21.
Abstract(1178) PDF(832)
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A magnetic property of soils in saline region,lower Haihe Plain,was determined by means of a Bartington Meter(Model MS2).The results show that there is an obvious difference of soil magnetic susceptibility(MS) in spatial distribution.The low MS(＜34×10-8m3/kg) occurs in saline and waterlogging section,and relatively higher one(＞50×10-8m3/kg) in the gradual desaline section.And the MS of bottom soil with coarse texture is lowest in same profiles.For clay-deposit later formed by alluvial and lain in the middle or bottom of profile(M4),both the MS and the coefficient of frequency dependency(CFD) are greater than those of layers among all soil profiles.The higher CFD indicates the existence of superparamagnetic,ferrimagnetic phase with grains of the order of ＜0.01μm in size.The measure of MS is suitable for the soils in alluvial plain besides the southern weathering earth zone.Susceptibility data is useful to examine trends in mass magnetic susceptibility,down a soil profile or between different soil.Thus it can be used for one of indicators of soil and ecoenvironment evolution.
The eco-environment of irrigation in the Northwest and countermeasures
Xing Da-wei
1999, 7(3): 21-24.
Abstract(926) PDF(878)
Abstract:
Drought,shortage of water and the weak eco-environment are problems existing in Northwest China.Water source is the main domination factor to the eco-environment in this region.lrrigation had not only positive but also negative effects on eco-environment.Then eco-environmental problems of the whole drainage area should be taken into account when making programmes for utilization of water resources in order to reach the aims of sustainable and coordinated development of environment and economy.
Ways for increasing water use efficiency in farmland of Taihang piedmont
Zhang Xi-ying, Pei Dong, You Mao-zheng
1999, 7(3): 22-26.
Abstract(1018) PDF(996)
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For sustainable agricultural development in Taihang piedmont,measures must be applied to reduce irrigation water use.Based on field experimental results for many years,ways for increasing farmland water use efficiency are discussed and the measures include reducing soil evaporation,coupling water and fertilizer,fully utilization of soil water,high efficient irrigation schedule and managing root system for efficient water use.Straw mulching can reduce farmland evaporation about 40mm annually,and one or two irrigations can be omitted by optimal irrigation schedule to winter wheat.
A study on eco-agricultural models in the main dry wheat areas of South Shanxi
Guo Ping-yi, Miao Guo-yuan, Yin Jun, Gao Zhi-qiang
1999, 7(3): 25-29.
Abstract(1234) PDF(878)
Abstract:
The agroecological problems in the rain fed areas of the Loess Plateau of South Shanxi were studied.Based on analysis of the structures, functions and environmental conditions of the agroecosystems,high efficient dry land agroecosystems for different land resources and production conditions were set up. Then the general principles to establish the system were reviewed.
Overshoot mechanism of summer maize water stress and its application
Yang Xiao-guang, Yu Hu-ning
1999, 7(3): 27-31.
Abstract(1042) PDF(860)
Abstract:
Through fixed-plot experiments,effects of water stress in different growth periods on summer maize physiological and ecological process have been studied.The results show that the susceptibility factors for water stress in different periods to yield and its components are different.Soil water stress firstly acts on crop leaves and makes their water potential decrease,then leaves growth,photosynthesis and the transpiration of photosynthetic matters also decrease together.In the suitable situation of water stress,crop growth has a overshoot mechanism and stalk-mulching can relax water stress,at the same time have promoting influence on this overshoot mechanism.This mechanism should be applied to rain-fed agriculture or water-saving agriculture.
Statistic classification of winter wheat growth conditions by using NOAA satellite information
Zhang Ai-min, Ma Xiao-qun
1999, 7(3): 30-34.
Abstract(836) PDF(892)
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The situations of crop growth is a very important reference in guiding agricultural production and forcasting crop yield.ln this study,value of green degree from meteorological sattellite is used for analysing the growth conditions of winter wheat in Huaibei.Firstly,based on the investigations to the growth situations of winter wheat and their distributions in Haibei from 1986 to 1994,four hypothesises were set up.Secondly based on the analysis of the historical green degree information,green degree indexes were presented for classification of three kinds of growth conditions.Thus the green degree information from meteorological sattellite can be used for monitoring the growth of winter wheat.
Ecoeconomic viewpoint on controlling weeds in the field of summer maize in the North China
Jiang De-feng, Song Ji-zuo, Wu Jun-bo, Ni Han-wen, Li Sun-rong
1999, 7(3): 32-34.
Abstract(978) PDF(836)
Abstract:
The ecoeconomic threshold for controlling weeds in the field of summer maize in Beijing and Yantai regions has been investigated.The mathematic relationship between the loss rate of maize yield and weed density is established.The results show that,with the increase of weed density,the competition between weeds and maize becomes intense,and maize yield decreases slowly.When weed density is 200 plants per square meter,the loss rate of maize yield is 53.07 percent.The results also show that the ecoeconomic threshold for weed-controlling in the field of summer maize in the North China is 4.21～6.91 plant/m2，namely,weeds could grow freely when they are under the threshold and the influence on maize yield is quite little.However,as to weeds which are over this threshold,timely and effective measures for controlling weeds should be necessary.
Effects of methane fermentation residues(MFR) on soil improvement
Zhang Wu-di, Zhou Chang-ping, Liu Shi-qing
1999, 7(3): 35-37.
Abstract(1245) PDF(1043)
Abstract:
It helps stalks to return to field when the residues from methane fermentation are used as fertilizers.The residues are not only high quality fertilizers,but also can improve soil.The functions of the residues in improving soil physi-chemical properties and granular structures,activating microelements and micro-organisms in soil can increase crop production by 10 to 30%.
Review on alfalfa-crop rotations
Wang Qing-suo, Zhang Yu-fa, Su Jia-kai, Zhang Yong-ting
1999, 7(3): 35-38.
Abstract(1767) PDF(1201)
Abstract:
The alfalfa-crop rotations can make the yield increase and the quality of crop raise. During the influence of alfalfa,there are several factors including crop kind and alfalfa varieties,continued years of planting alfalfa or crop,tillage methods of alfalfa field,alfalfa-N use efficiency of crop as well as fertilization.On the other hand,the rotations can improve the field ecological environment such as to increase nitrogen,organic matter and waterable aggregate structure in soil,to decline soil density.By obsorbing water amountly and biological desalination,alfalfa can decline the ground water level,improve salinized soil,reduce the runoff of water and soil,it also can decrease the pests and weeds.
A study on comprehensive ecoagricultural programming in the hilly loess region of West Shanxi
Wang Xue-meng, Xing Li-pin, Guo Chang-lian, Nie Hong-sheng
1999, 7(3): 38-42.
Abstract(927) PDF(984)
Abstract:
The eco-agricultural construction is a complex systems engineering with multi-factors,multi-layers and multi-targets.By adopting target programming model,combining economic,social and ecological benefits,comprehensive ecoagricultural programming was carried out in accordance with eco-economic theory and by taking the whole area of the hilly loess region of West Shanxi as a large system.This work provided scientific basis for policies formulating for the relevant government departments.
Cultivating A.Polytricha with forage and biogas residues and the effect of fungi residues on soil improvement
Weng Bo-qi, Ying Zhao-yang, Jiang Zhi-he, Luo Tao
1999, 7(3): 39-42.
Abstract(1226) PDF(994)
Abstract:
The results indicate that different proportions of forage and biogas residues substituted for wood pieces have various effects on yield and quality of A.polytricha.The better one is substituted 30% of grass power and 30% of biogas residues for wood pieces,and its biological efficiency is 107.5%,the yield is increased by 82.2%,crude protein,aminoacid,crude fat and soluble sugar increased by 3.7%,1.75%,0.13% and 0.37% respectively.The yield is increased by 55.1% and 61.0% respectively when 50% of grass power or biogas residues substitute for wood pieces.As compared with CK,the carbon in humic acid of red soil is increased by 22.9%,26.5%,16.5% respectively by all applying 5t/hm2 of biogas residues,fungi residues and fresh grass in orchard for three years.The granular structure is enhanced by 78.5%,79.9% and 69.3% respectively.
A study on sampling different state of soil water and their characters of chemical compositions
Geng Qing-guo, An Zhong-min, Yoshinori Aiba
1999, 7(3): 43-48.
Abstract(1346) PDF(845)
Abstract:
Sampling duration for soil water at different state was studied using centrifugation,with analytic determination of their chemical compositions.The results presented the time needed for extracting soil water at different PF segment and the contents of main ions and composition characters of the extracted soil solutions.This work is helpful to researches on crop growth and nutrient cycle in soil-crop ecosystem,soil fertilization and so on.
Effects of Arbuscular mycorrhizal fungi on growth,yield and quality of Phaseolus vulgaris L.in field
Li Min, Jiang De-feng, Meng Xiang-xia, Liu Run-jin, Li Xiao-lin
1999, 7(3): 43-46.
Abstract(1304) PDF(944)
Abstract:
ffects of Arbuscular mycorrhizal(AM) fungi:Glomus mosseae(Nicol & Gerd) Gerd & Trappe,Glomus versiforme Karsten Berch and Gigaspora rosea Nicolson & Schenck on growth,yield and quality of Phaseolus vulgaris L.in field have been investigated from 1996 to 1997.Results show that inoculating it against AM fungi will increase the contents of N,P,K,Ca,Mg,Cu in Phaseolus vulgaris and its leaf chlorophyll,to enhance its transpiration rate,stomatal conductance and photosynthetic rate,and those to improve its growth and yield.Comparing the control to treatments,the contents of Vc,raw protein and carbonhydrate in pod are also increased.It suggests that Glomus versiforme should be the most effective in colonization and its benefit to Phaseolus vulgaris growth in field.
Elemental study on the population dynamics of Lepidoptera phototactic insects in hill area of lower Taihang Mountain
Liu Zhi-jun, Ma Zhong-qiu, Yun Zheng-ming
1999, 7(3): 47-50.
Abstract(1121) PDF(1027)
Abstract:
By the black light lamp lure and investigation day after day,the population dynamics of Lepidoptera phototactic insects in hill area of lower Taihang Mountain is studied. Experimental results indicate that there are 206 kinds of phototactic insect species belonging to 16 families in this region.The dominant species include Ostrinia nubilalis(Hübner),Heliothis armigera(Hübner),Culcula panterinaria(Bremer et Grey),Maruca testulalis(Geyer).Three types of the population dynamics of phototactic insect species could be identified as sporadic appearance,successive appearance with small amount and successive appearance with great number.It reveals quantitative change of Lepidoptera insects and provides scientific basis for making correct policy of controlling the pests.
The water-savng effects of straw mulch in field
Zhou Ling-yun, Zhou Liu-zong, Xu Meng-xiong
1999, 7(3): 49-52.
Abstract(2035) PDF(1212)
Abstract:
Using straw to cover wheat field is an effective measure to reduce uneffective evaporation from interplant and increase the untilization efficiency of water resources.Results from three years′experiments showed that water consumption coefficient was reduced by 8.1 to 23.2% and evaporation from soil surface was reduced by 26.3% by straw mulch.The total water-saving amounted to 270m3/hm2.The mechanism of straw mulch in water-saving is that straw mulch can adjust soil temperature,conserve soil moisture,inhibit weed growth and improve the utilizaton efficiency of soil water.
Effects of phosphate on wheat growth in high-boron soil
Yin Jun, Zhu Jin-yun, Paull J.G., Rathjen A.J.
1999, 7(3): 51-54.
Abstract(1032) PDF(927)
Abstract:
In order to search out a way to reducing the boron toxicity,effects of phosphate on wheat growth in boron toxicity soil have been studied.It is found that P can reduce the boron toxic symptom of wheat,percentage of yellow leaf decreases from 9.95% to 7.60%,and promote the growth of wheat roots and shoots by 44.9% and 11.72% respectively, when boron concentration reaches to 50mg/kg. Furthermore,deep roots below 30cm soil are increased by 2.1% which promotes wheat to better use the water and nutrition in deep soil.
Material and energy fluxes and benefit evaluation for greenhouse ecosystem
Li Wen-qing, Luo Hong-yi, Liu Jia-fen
1999, 7(3): 53-55.
Abstract(1188) PDF(1016)
Abstract:
Based on extensive investigations to the greenhouses in Shouguang and Changle Counties in Shandong Province,Material and energy fluxes and social,economic and ecological benefits of the greenhouse ecosystem were analysed and evaluated.
Study on plantingbreeding complex agro-ecosystem in the low hill land of red earth
He Yuan-qiu, Wang Ming-zhu
1999, 7(3): 55-58.
Abstract(921) PDF(836)
Abstract:
Based on the natural topography in the low hill land of red earth,the plantrng ecological pattern with vertical,intercropping and interplanting distribution and the breeding ecological pattern disposed optimally animal,stock and fish are put forward. Farm production,fish breeding and poultry make good cycle.The methods of controlling the subsystem of each pattern are summarized in the end.
A study on the characters of micro-hydrological cycle and water use efficiency of crops in the waterlogged lowland of Heilonggang Region
Yin Yan-feng, Chen Hong-en
1999, 7(3): 56-60.
Abstract(994) PDF(894)
Abstract:
The characters of miro-hydrological cycle in waterlogged lowland has systematicly explained in this paper.By using optimal identification method to solve the inverse problems of groundwater,the recharge quantity of soil water through capillary rising from groundwater was obtained.The application conditions and the advantages and disvantages of the soilwater flux method were reviewed.Then the quantity of irrigation and recharge quantity of soil water by precipitation was successfully obtained by using this method.Finally,the water use efficiency of crops in the waterlogged lowland was calculated.
Regional difference of cropping-animal husbandry system and its developmental trends at intensive farming region in the Changjiang River Delta
Zhang Wei-jian, Bian Xin-min, Li Chang-xin, Zhang Xi-gu, Wang Long-yu
1999, 7(3): 59-62.
Abstract(1212) PDF(909)
Abstract:
Through investigations,evaluating index system of the regional difference of cropping-animal husbandry system in intensive farming region of the Changjiang River Delta includes natural resources,planting-raising situation,social consume and rural economic feature,etc. Using dynamic clustering method and appointing farming region boundary,cropping-animal husbandry system in the Changjiang River Delta are classified into five areas. Their characters and developing trends are also analyzed.
Effects of straw mulch in wheat field and its effects on yield increase
Yuan Jia-fu
1999, 7(3): 61-65.
Abstract(2059) PDF(1477)
Abstract:
Results from field experiments showed that by rice straw mulch, contents of soil N,P,especially organic matter and available K are increased,and soil physical structure was improved with soil porosty inreased and soil volumetric weight reduced. Straw mulch has also the functions in reducing soil evaporation, regulating soil temperature and decreasing soil weed density. Thus the wheat yield was increased 13.5 to 46.1%,that is per Kg rice straw increasing wheat yield at 0.12 to 0.23 Kg.The optimal rice straw mulch quantity was 3000kg/hm2.
Analysis on environment of rural industrial system in Heilongjiang Province
Li Lin, Lu Shi-lei, Li Sen
1999, 7(3): 63-66.
Abstract(789) PDF(870)
Abstract:
The model using system environment identification can be used to analyze the environment of agricultural industrial system in Heilongjiang Province.Firstly,the system environment is classified into natural factors and social economic factors.Secondly,each factor is analyzed in five aspects,i.e.the importance,development benefit,potentiality,utilization situation and development problem of agricultural industrial system.Ten superiority factors such as farmland,production materials,science-technology,etc.,seven limited factors such as climate,animal husbandry,specialists of working in rural areas,etc.,and ten potential factors such as potential land resources,crop's variety,water resources,etc. are obtained.To develop the rural economy of Heilongjiang Province, using superiority factors,excavating potential factors and improving limited factors are suggested.
Ecological effects of ploughing and softening with aggregate dressing for wide-row close maize growing in the semi-humidity dryprone areas
Li Xue-min
1999, 7(3): 66-69.
Abstract(1017) PDF(1045)
Abstract:
Field experiments were carried out to study the effects of ploughing and softening with aggregate dressing for maize-growing and its field ecological effects. The results showed that along the maize row,deep ploughing before planting,combining side ploughing and softening can soften the tillage pan, increase the soil permeability and water storage in deep layer of soil during the growth period of maize.Furthly combining aggregate dressing, banded rich soil will be quickly formed which can improve the maize growth conditions. By wide-row close planting measures,the light and micro-climate conditions can also be improved.Those measures have significant effects on maize yield increase.
Agro-ecoeconomic division at Caoduhe River valley
Lu Lan, Cai Qiu, Lu Qian
1999, 7(3): 67-70.
Abstract(807) PDF(858)
Abstract:
Agro-ecoeconomy division is one of important projects to harnessing and exploiting valley for its sustainable development.Based on the main limit indexes such as altitude,temperature,illumination,Chaoduhe valley is divided into five agro-ecoeconomic regions by cluster analysis method.According to the natural and social elements in those regions,the developmental diractions and main contents are worked out.
Climatic ecological division and growth characters of wheat in Henan Provice
Zhang Shi-cheng, Ding Yun-hua, Guo Rong-xiu
1999, 7(3): 70-73.
Abstract(1391) PDF(1472)
Abstract:
12 factors that affect the wheat productive tiller number ratio,kernel number per spike,thousand-grain weight at eight typical sites in Henan Province were analysed and calculated by fuzzy clustering method.Henan Province is divided into four types of area at λ=0.857.which are south,north,middel-south and middel-north of Henan,respectively.The distribution principles of wheat varieties and characteristics of the growth and main measures for high yield in their climatic ecological regions were discussed.
Analysis and calculation of energy flow on agro-ecological engineering of Liuminying
BianYou-sheng
1999, 7(3): 71-72.
Abstract(943) PDF(893)
Abstract:
Taking Liuminying Village as an example,the energy flow of agro-ecological engineering is analyzed and calculated.Results show that analysis step of energy flow should include deciding system boundary,analyzing system structure,determining input and output of system energy and drewing energy flow scheme.Analyzing energy flow plays an important role on increasing productivity of system and improving the construction of agro-ecological engineering.
Developing nutrimental agriculture for the demand of nourishment from increasing population
Jiang Yu-ming, Sun Wan-peng, Huang Qing-he, Xie Yang, Yu Bao-ping
1999, 7(3): 73-76.
Abstract(1000) PDF(35)
Abstract:
Strategies for sustaining the increasing population are to enhance the nutrition output of a certain unit and to economize the consumption of grain source.By means of macro-and microcosmic researches and on the basis of former results on food and nutriology science,it is revealed that the balanced nutrition supply could save the consumption of grains and green mass outyields grains one to three times in protein,fats,carbohydrate,vitamin and minerals according to the plant growth curve.In China,developing nutrimental agriculture for balanced nutrition supply and maximum nutrition output would be a way to meet the increasing food needs of its 1.6 billion population in next century.
The technologies of manuring,irrigation,cultivation and growth features of rotary tillage and broadcast sowing for wheat planted after rice
Sun Quan-de, Bai You-shan, Han Jun-jie
1999, 7(3): 74-76.
Abstract(1265) PDF(916)
Abstract:
Extensive researches have been carried out to study the growth features of wheat planted after rice by rotary tillage and broadcast sowing.The growth and development of the wheat can be generalizied into four obivious features as following:small nutritive organ,slowly development at earlier stages while quickly at later stages,abundant tillers with lower percentage of productive tillers,less number of grains but heavy grain weight. Cultivation indexes and high yield measures for heavy panicle weight and medium height wheat variety such as Hanfen 87-2 planted at high density are put forward. The yield increase effects of potassium and zinc are confirmed. The combining dressing of nitrogen,phosphorus,potassium and zinc can generate productive young tillers and secondary roots. Furthly the irrigation technicals are presented in related to the dynamics of soil water.
Ecoagiculture：The strategy choice for rural development in Honghu City
He Ben-shou, Cui Shi-bin
1999, 7(3): 77-81.
Abstract(880) PDF(37)
Abstract:
The environment in Honghu City,which is located in the north of the middel reach of the Yangtze River and in the south of Jianhan Plain with many lakes and rivers,had deteriorted because the over exploitation of the natural resources and unappropriately raising multiple crop index. As a result,agricultural production fluctuated, even shrunk for a long period of time.After painfully thinking about the failure in agriculture,ecological agriculture was emploied.Through years of exploitation-practice and re-expliotation-repractice,eight main ecozones and six matching projects have been set up.The features of ecoagriculture in lake and river abundant area came into being.The goals of economy,ecology and society harmoniously developing have been acheived.
The construction of eco-agriculture and the sustainable development on Loess Plateau
Lu Zeng-lan, Lu Zong-fan
1999, 7(3): 77-79.
Abstract(864) PDF(740)
Abstract:
On the basis of analyzed experiences of harnessing soil and water loss in North of Shaanxi Province,we should take “full retaining rainfall,infiltration on the spot,its utilization with high efficiency and turning disadvantageous factors into advantages”as a united policy and strategy for soil and water conservation,dryland farming and harnessing Huanghe River.To select planting techniques of water-saving and manure-saving and breeding techniques on grain-saving,building agriculture cultivated with rain,bringing key functions of peasant entrepreneurs into full play on aspects of buying uncultivated land,harnessing mountain and improving soil should be an inevitable selection for eco-agricultural construction and sustainable development on Loess Plateau.
Water and soil conservation and eco-agriculture construction
Yue Hong-guang, Qi Ji-zhong, Zhao Yong-chun
1999, 7(3): 80-81.
Abstract(1353) PDF(817)
Abstract:
Effects of water and soil loss on sustainable agricultural development are analyzed.The important action of water and soil conservation on developing agricultural production and improving eco-environment is expounded.It points out that the eco-agriculture is an inevitable road to develop agriculture in China.
Patterns and programming for ecoagricultural divisions in Jiansu Province
Li Hai-feng
1999, 7(3): 82-84.
Abstract(1101) PDF(962)
Abstract:
Based on the regional features of natural resources,development of production and social economic conditions, ecoagricultural divisions in Jiangsu Province were conducted in accordance with the principles of agricultural division. Suitable models for ecoagricultural construction for different regions were set up.
Turning to the road of intensive eco-agriculture
Li Qian-de
1999, 7(3): 82-83.
Abstract(871) PDF(857)
Abstract:
The basic intensions,requirements and management forms of intensive eco-agriculture are expounded.It is pointed out that contemporary agriculture must turn to sustainable agriculture which inevitable selection is intensive eco-agriculture in China.
, Zhu Zhiwu, Wang Jianming, Guo Zhihe, Hua Banan
1999, 7(3): 84-86.
Abstract(1496) PDF(961)
Abstract:
A review on eco-economic development for Hengshui Lake
Zhao Shan-qing
1999, 7(3): 85-87.
Abstract(1029) PDF(29)
Abstract:
The advantages of development of Hengshui Lake was analysed in this paper with emphasis on the importance of ecological construction of the lake on alleviating the serious water-shortage problems in part of North China and promoting the economic development of Hengshui Prefecture. Practical measures for development of the economy of Hengshui Lake were reviewed.

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