中国生态农业学报(中英文)

1998, 6(2): 1-5.

Abstract(827) PDF(862)

Abstract:

1998, 6(2): 6-7.

Abstract(774) PDF(9)

Abstract:

1998, 6(2): 8-9.

Abstract(1479) PDF(874)

Abstract:

Developing eco-agriculture for sustainable agriculture in China

Cao Shangbin

1998, 6(2): 10-14.

Abstract(1118) PDF(853)

Abstract:
The meaning of sustainable development and the concept of the Chinese eco-agriculture (CEA) are briefly introduced. The necessity and feasibility of developing CEA are discussed. It is pointed out that CEA is one important strategy and a model with the Ch

Agriculture-food-environment：the basic aspect for new agro-technology revolution

Tao Zhan

1998, 6(2): 15-19.

Abstract(976) PDF(976)

Abstract:
The objective and gain and loss of the previous agro-technology revolutions in the world are analyzed．The global extension of the third revolution and its basic themes are pointed out．The countermeastlres for China to face the new agro-technology revoluti

Value accounting methods of water resources for sustainable farmland utilization

Zhang Renwu, Ji Wenying, Cheng Weimin, Meng Zhong

1998, 6(2): 20-24.

Abstract(1085) PDF(947)

Abstract:
The methods of value accounting for water resources including surface water and groundwater are discussed．Many practical models for wheat and rice production are used to assess the eftect of different measures on water use eficiency and economic beneflts．

Evaluating index system of agricultural land use for sustainable development in China

Wang Keqiang, Han Tongkui, Liu Hongmei

1998, 6(2): 25-29.

Abstract(1505) PDF(1120)

Abstract:
Sustainable development of land use is a key aspect of sustainable development of the socio-economic system．A correct evaluating index system for sustainable development of land use can help to carry out sustainable development strategies．The evaluating index system shoule include two aspects,the dynamic equilibrium and the sustainable use of agricultural sand. The change in space and time and in requirement of sustainability will all result in a change in the index system.

Relationship between environmental stresses and proline in plant

Xing Shaochen, Cai Yuhong

1998, 6(2): 30-33.

Abstract(1418) PDF(828)

Abstract:
The changes of accumulated proline under different environmental stresses and their physiological functions in plants are summarized．The possibility of proline to be used as a physio-biochemical index is discussed．

Plant root exndates

Liu Suping, Yang Zhiwei

1998, 6(2): 34-36.

Abstract(1233) PDF(942)

Abstract:
Collection and analysis methods of plant root exudates as wel1 as the factors influencing the secretion of root exduates and the composition of exudates are summarized．The interaction between plant root exduates and rhizosphere microorganisms is discusse

Effects of allelochemicals on nitrogen absorption of wheat seedling

Yuan Guanglin, Ma Ruixia, Liu Xiufen, Sun Sien

1998, 6(2): 37-39.

Abstract(1354) PDF(957)

Abstract:
Effects of three allelochenmicals such as ferulic acid(FA)，benzoldehyde(BH)and 4-tert-bytylbanzoie acid(4-BA)on nitrogen absorption of wheat seedling are studied．The results show that N absorption from both N0^-₃ and NH⁺₄ decrease with the increase of concentrationsof allelochemicals．Nitrogen absorption from N0^-3 and NH⁺₄ by fifteen-day-old seedlings，which are grown in three culture liquids such as FA，BH and 4-BA(0．5g／L)，is 58% and 42%，50％and 19% ，53% and 33% of that in the controls respectively．Therefore，the negative effects of allelochemicals on nitrogen absorption of NH⁺₄are stronger than those of NO^-₃．Those negative effects tend to be smaller as seedling grows bigger．

Application of AVHRR data of NOAA satellite to investigating low-yield farmland in Huaibei Plain

Zhang Aimin

1998, 6(2): 40-43.

Abstract(861) PDF(792)

Abstract:
Based on AVHRR data of NOAA satellite in 1988～1992，crop growth vigours in summer and autumn are analysed．Combinating those information with the practical grain yield and underlaying surface conditions，the threshold diferentiated by remote sensing NOAA/AVHRR is defined. The low-yield farmland in Huaibei Plain is classified.

Evaluation of afforestation technology with strip clearing shrubs in slope land

Bao Weikai, Qiao Yongkang

1998, 6(2): 44-47.

Abstract(1060) PDF(877)

Abstract:
Experiments show that afforestation technology with strip clearing shrubs (ATSCS) is effective to develop forest．Aside from soil and water conservation，and protection of biodiversity，this technology can mix natural trees with artificial trees in the same system．The clearing of shrub belts improved light and temperature condition in the ecosystemt,and，there-fore，stimulated the decomposition rate of organic matter and accelerated the growth of young forest．It is good technology to form a tree-shrub-grass multi-layer system．

Interplanting in citrus plantation and its benefits

Wu Jianjun, Li Quansheng, Yan Lijiao

1998, 6(2): 48-50.

Abstract(1102) PDF(972)

Abstract:
Effectiveness of interplanting rye grass (Lolium perenne)and milk vetch (Astragalus sinicus L．)in citrus plantation in red earth hilly areas is studied．The results indicate that interplanting has good effectiveness of enhancing efficiency of energy conversion，redueingloss of water and soil，improving soilfertility，yield andfruit quality．However,interplanting would retard the increase of soil temperature in spring which slows down the growth of young trees in spring and summer．To popularize this technique，cultivation and management measures must be strengthened and the relationships between utilization of the forage，conservation of water and soil，fertilizing soil and citrus prodution should be well coordinated to enhance ecological and economic benefits．

Analysis on structure succession of farmland ecosystems and its function change in Luancheng County

Hu Chunsheng, Zeng Jianghai

1998, 6(2): 51-54.

Abstract(1148) PDF(1006)

Abstract:
The structure succession of farmland ecosystems and its function change in the last 40 years in Luancheng County were anlysed．The results show that the structure succession along the main objective of yield can bring the tight and energy potential into full play,mean-while，lead the increase of stress on resources and environment，and decline the structure stability and nutrition bglance strncure．To improve the sustainability of farmland ecosystem，new ecological niche should be expanded to strengthen the multiple transformation of primary productive forces，and the structure should be adjusted to increase the overall effieiency of resoutees use.

Agro-forestry models and their economic benefits in the sandy region-Taking sandy region of Kaifeng City in Genan Province as an example

Wu Jicheng, Wang Shenghou, Ren Sukun, Li Xinduan, Wang yongqi

1998, 6(2): 55-57.

Abstract(734) PDF(785)

Abstract:
On the analyses of economic benefits of different agro-forestry management models,the role and potentiality of agro-forestry models for sustainable agricultural development are stated. It provides a theoretical basis for the establishment,development and optimum of agro-forestry-animal husbandry ecoeconomic system in the sandy region of Huanghe-Huaihe-Haihe Plain in the future.

Effect of fertilizer on wheat in saline soil improved by alfafa--I. Its effect on the growth and yield of wheat

Liu Mengyu, T.Tadano, Liu Huiling

1998, 6(2): 58-60.

Abstract(889) PDF(848)

Abstract:
Pot and field experiments were conducted in Nanpi Eeo-agricultural Experiment Station, CAS，from 1995 to 1996．The results show that in saline sol1 ireproved by alfafa，application of N can increase grain yield of wheat by 61．2％,relative leaf weight by 16．2%，grain number by 37．36%．grain weight by 10．3 in pot experiment．Under the conditions of P application，grain yield increased by 16．78%，grain weight by 8．39%，but there is no effect on the grain number．Application of N and P could increase grain yield by 74．76%．But K is almost no effect on the growth．biomass and yield of wheat．Application of N and NP could increase yield by 60% and 73．5％ respectively．Application of N and P is the key to iocrease crop yield in saline soil improved by alfafa，which is also the key to get high crop productivity in this region．

Effect of comprehensive water-saving techniques on winter wheat in Talhang Piedmont

Chen Suying, Wang Shaoren

1998, 6(2): 61-63.

Abstract(1389) PDF(837)

Abstract:
By carrying out comprehensive water-saving techniques such as engineering and agricultural measures in Nantongye experimental region in Luquan City of Hebei Province and irrigating twice during wheat growth period．7500kg／hm² yield and 18kg／hm²·mm water use eficiency(WUE)are achieved．With watel-saving wheat varieties and straw cover． WUE of wheat reachs 24．3kg／hm²·mm．

Behaviour of chlorion from ammonium chloride application in irrigated-desert soil in Hexi Corridor

Suo Dongrang

1998, 6(2): 64-67.

Abstract(972) PDF(842)

Abstract:
The result of six years application of ammonium chlorindicates that chlorion absorbed by crop is 15．88%～26．92% ，its leaching loss is 47．0%～59．4%，its residue in O～150cm soillayer is 24．7%～26．1%．As a result of crop absorption and leaching through irrigation，the remained chlodon accounted for 3．0%～6．6% in O～40cm layer，0．71%～2．4% in 0～20cm farming layer．There are no harmful effects on quality properties and growth vigour of crop，soil property．Correlation between the residue of chlorion and test period is negative．Correlation between the quantity of leaching,loss and test period is positive．Correlations between the quantity of fertilizer and the residue ratio and leaching loss are positive．Therefore，thechemicaI fertilizer which contains chloride are suited to be used in combination with no chloride fertilizer or intermittently．

Farmland eco-environmental situation in outskirts--A case study from Ltjiazhuang Village of Jinzhou City of Hebei Province

Liu Ye yue, Cao Jian

1998, 6(2): 68-71.

Abstract(1388) PDF(990)

Abstract:
Taking Lijiazhuang Village of Jinzhou City of Hebei Province as an example，and by means of sieve method of eco-pollution factors，the outskirts farmland environment quality including water，soil and atmosphere quality，the efects of industrial waste materials on crop are analysed．The results indicate that farmland eco-environmental situation near the industrial district is poor，and crop pollution is mainly harmed by fluoride pollution．

Compound eco-agricultural model and its benefit analysis in swale in Baodi County

Yang jiagong, Sun Wende, Wu Yongsbeng, Zhang Fuhua

1998, 6(2): 72-75.

Abstract(1211) PDF(889)

Abstract:
Work for the construction of eco-agricultural modei such as transformation of Saline and easily waterlogging low land in Baodi County, highly effective utilization and protection of resources，bringing the dominance of land and biotic resources into full play,increasing Output of the system，etc． are discussed．Through improving eco-nvironment in swale，the waste saline land has been built into a commodity basis of fish,animal，fruit and grain．The rural economy has been developed in Baodi County．

Eco-agricultural engineering construction for deep-processing of maize in Guoshuchang of jilin City

Sui Zhiheng, Wu Jun, Liu An

1998, 6(2): 76-79.

Abstract(1382) PDF(925)

Abstract:
The pattern of eco-agricultural engineering construction for deep-processing of maize，the systematic engineering technology and comprehensive benefits are analysed．Multiple utilization of agricultural waste material is an effective way to improve eeo-environment,tachive benign cycle among planting，livestock rising and processing and promote the development of agricultura1 industrialization．

1998 Vol. 6, No. 2