我国是世界上水资源严重短缺的国家之一 ,水的短缺已严重制约了农业生产的发展。近年来 ,在工程节水和设施节水方面虽然有很大进展 ,却没有从根本上解决节水与高产的矛盾。现行麦田灌溉制度仍存在严重的弊端 ,造成水资源的大量浪费 ,我国农业灌溉用水有效利用率只有 30 %～ 40 China is one of the countries with a serious shortage of water resources in the world. The shortage of water has severely restricted the development of agricultural production. In recent years, there has been no fundamental solution to the contradiction between water saving and high yield despite great progress in saving water and saving water in facilities. The current irrigation system of wheat fields still has serious drawbacks, resulting in a lot of waste of water resources, the effective utilization of agricultural irrigation water in China is only 30% ~ 40