中国生态农业学报(中英文)

1994, 2(3): 1-5.

Abstract(852) PDF(1068)

Abstract:

1994, 2(3): 6-15.

Abstract(1095) PDF(1166)

Abstract:

Modelling the Biomass Dynamics of Alpine Meadow

PUBU Chi-ren, LIU Nai-zhuang

1994, 2(3): 16-26.

Abstract(1240) PDF(1058)

Abstract:
On the basis of the theory of crop growth simulation,the characters of a natural multi-population alpine meadow community were thoroughly studied in this paper,and a model was established,which can reflect the comprehensive influence of meteorological variables and biological factors on population biomass dynamics of the alpine meadow community.The main model set includes the layer by layer by layer quantitative simulation of the fundamental physiological processes such as photosynthesis,respiration,distribution and transfer of the assimilative products between aboveground and belowground,the simulation of dynamic development of LAI and community composition.The main model includes 6 submodels. All those models could well describe the dynamic changes of aboveground and belowground biomass of the alpine meadow community with season by testing.

Effects of System Factors on Productivity of Key Agricultural Elements

WANG Pei-zhi

1994, 2(3): 27-33.

Abstract(1158) PDF(940)

Abstract:
System factors play an important role in affecting the productivity of agricultural key factors during the process of agricultural development.The form of its expression is through industrial environment and technological efficiency to effect the change of agricultural output value.It was estimated by mathematical model that the share of system factors on the productivity of key agricultural factors was 40.97% during 1952 to 1992.Then based on this assumption it was suggested that improving system factors be the base for sustainable agricultural development in China.

Development and Prospect of Land Resource Economics in China

LOU Hui-xin

1994, 2(3): 34-39.

Abstract(1034) PDF(942)

Abstract:
Though the existence of land resource economics is not very long in China,it has been rapidly developed and gradually be perfacted.A review of the development of this discipline in China was presented in this paper,and the concept of land resource economics,its relation with other branches as well as its focal research points were all discussed.

Energy Flow in the Agroecosystem of Farming-Livestock-Fruit

LU Fu-bao

1994, 2(3): 40-46.

Abstract(1121) PDF(783)

Abstract:
In this paper based on the experimental results from operating and revolving the compound agroecosystem of farming-livestock-fruit in Luancheng Experimental Station,energy flow in this system was calculated,ecological features were evaluated and ways for improving its functions and increasing its energy efficiency were presented.

Comprehensive Evaluation of the Agroecological Environment in the Hilly Loess Region of Shanxi Province

GUO Chang-lian, NIE Hong-sheng, XING Li-ping, WANG Xue-meng

1994, 2(3): 47-54.

Abstract(1027) PDF(901)

Abstract:
Multi-dimension grey system modle was used to overall evaluation of the agroecological environment of 27 counties in the hilly loess region of Shanxi Province. The results showed that the evaluation can be fitted in with real local conditions,so it provides bases for ecoagricultral planning decision.

The Optimizing Design of the Agro-economic System for Mengu Town of Fang County in Qingba Mountain District

XU Qiao-li, CHEN Gui-hua

1994, 2(3): 55-61.

Abstract(1178) PDF(958)

Abstract:
Based on analysis of theagricultural natural resources in Mengu town,Fang county,Qingba Mountain District and the main problems in the agro-economic system,a study on optimizing design of the agro-economic system for the town was conducted. Ways for exerting the potential productivity of the superior agricultural natural resources,optimizing the land utilization and the agro-economic structure,and improving the output-input ratio were presented.

Effects of Soil Conditions on Root Growth of Winter Wheat

ZHANG Xi-ying, YUAN Xiao-liang, HAN Ren-e, WANG Hui-xiao

1994, 2(3): 62-68.

Abstract(1347) PDF(955)

Abstract:
Results from two years field and pot experiments showed that soil conditions such as soil fertility, moisture and cultivation gretly affected the developent and destribution of winter wheat root system in soil.Based on the expermental data,models for root growth and distribution in soil were developed.

Developing Stable Nullisomic Wheat by Blue Grain Monosomic Wheat

MU Su-mei, ZHONG Guan-chang, LI Zhen-sheng, LI Bin

1994, 2(3): 69-72.

Abstract(1190) PDF(1101)

Abstract:
Seven kinds of stable and self-fertilized nullisomic wheat have been developed by a great population screen and a consecutive selection in various genetic backgrounds.This provides the foundation for developing a set of self-fertilized nullisomic series of wheat.

A Study on Forming Anti-drought and Anti-flood System in Haihe Plain

ZHANG Li

1994, 2(3): 73-77.

Abstract(1221) PDF(966)

Abstract:
Water shortage is the main limiting factor to agricultrual development in Hai-he Plain,But because the uneven distribution of annual precitpitation,water logging of ten occurrs.For solving this problem,a transregional anti-drought and flood adjustment system was set up based on the climatic characters and the patterns of crop water consumption.Then the capacity for anti-drought and anti-flood in this region was greatly increased.

1994 Vol. 2, No. 3