农田生态系统水分循环与作物水分关系研究

A study on water cycle in agro-ecosystem and relationship between crops and water

通过对我国不同类型农田生态系统水分循环与作物生产力关系的网络研究,探讨了我国主要类型地区小麦、玉米、大豆等几种主要作物的蒸散耗水和需水规律、水分利用效率和作物水分生产函数,获得这些地区主要作物耗水需水特征及小麦水分生产函数。结果表明,在不同生态系统优化结构模式中作物与水分关系均得到极大改善,节约了作物用水,提高了作物产量和水分利用效率。

Based on the network researches of the relationship between water cycle and crop productivity of agro-ecosystem in different ecological type regions in China,the water requirement and consumption characteristics of some crops (wheat,corn,soybean,etc. ),crop water use efficiency(WUE) and the crop-water productivity function were investigated. The results showed that there were great improvements in relationship between water and crops in different optimized agro-ecosystem models. The water used by crops was saved,yield and water use efficiency of crops were increased.