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我国农业水资源的利用效率较低,普遍存在水资源浪费现象,加上管理不善和人为水资源污染现象还没有得到有效遏制,进一步加剧了水资源供需之间的矛盾,因此发展节水农业势在必行。如何利用好有限的水资源,提高自然降水和灌溉用水的利用效率,减少水资源在农业生产中的浪费已成为一个国际性的研究目标。
The utilization efficiency of agricultural water resources in our country is relatively low, and there is a widespread waste of water resources. Coupled with the mismanagement and man-made pollution of water resources, the phenomenon of water pollution has not been effectively checked and the contradiction between supply and demand of water resources is further aggravated. Therefore, It is imperative. How to make good use of limited water resources, improve the utilization efficiency of natural precipitation and irrigation water, and reduce the waste of water resources in agricultural production has become an international research goal.