Special Column:Celebration of the 70th Anniversary of IGSNRR, CAS

Evaluation of agropastoral model and necessary technical system

  • 1. Institute of Environmental Sciences, Beijing Normal University, Beijing 100875, China;
    2. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China

Received date: 2000-04-04

  Revised date: 2000-08-17

  Online published: 2001-04-25


This paper applies the research method of model evaluation and optimization and necessary technical system.Agropastoral structure is the main model for agricultural production in piedmont of Taihang Mountains.It can become an optimized model by evaluation and necessary technical system,and can facilitate high efficiency utilization of resources.Alfalfa shows remarkable effects of economy,water and fertility.Farmland subsystem of agropastoral model can save irrigation quota by 35% and possesses remar kable economic and energy efficiencies.Nitrogen and phosphate output/input of alfalfa is much higher than that of wheat maize system and cotton.Some 32.7% of nitrogen and 25.9% of phosphate of animal husbandry subsystem may be returned to the field and finish the definite nutrient cycle.Necessary techniques of optimized model of agropasture are the rational proportion between farming and pasturing,high efficiency management of field,adjustment of husbandry structure,straw fodder treatment,forage planting and agropastoral substance cycle.Among which the rational proportion and adjustment of husbandry structure are the key techniques.Applying rationally theses techniques,comprehensive utilization efficiency of agricultural resources can be added by 20%~30% based on the optimized agropastoral model.

Cite this article

WANG Zhi ping, LIU Ai min . Evaluation of agropastoral model and necessary technical system[J]. JOURNAL OF NATURAL RESOURCES, 2001 , 16(2) : 166 -171 . DOI: 10.11849/zrzyxb.2001.02.011