【摘要】 从农业供水资源对作物种植结构的影响 ,作物种植结构对农业用水量、农业水资源供需平衡的影响以及作物种植结构对农业节水灌溉方式的要求和对灌溉效益的影响等几方面 ,研究探讨了农业节水与作物种植结构这种既相互制约 ,又相互促进的关系 ,并就北京市作物种植结构调整和今后农业节水灌溉工程建设提出几点建议更多还原

【Abstract】 The relationship between water saving and cropping pattern, which is inter_constraint and inter_promotion, is probed through analyses of the impacts of agricultural water supply on cropping pattern, the impacts of cropping pattern on agricultural water use, agricultural water resources balance of supply and requirement, the requirement of agricultural water saving irrigation methods and irrigation benefits. A few suggestions for the adjustment of cropping pattern and agricultural water_saving irrigation engineering construction in Beijing in the future are also proposed in this paper.更多还原