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农业用水通过灌溉系统流入田间供作物生长之需,其损失主要有两个方面,一方面是输送过程中的渗漏损失,另一方面是田间的渗漏、蒸发和废弃。文章针对农业用水损耗的这两个方面,提出了通过节水灌溉工程技术、农艺节水技术及节水管理技术来提高农业用水的利用率和生产率,介绍了各节水技术和相互关系及存在问题。
Agricultural water flows through the irrigation system into the field for crop growth. There are two main aspects of its loss. One is the seepage loss during transportation and the other is field leakage, evaporation and discarding. In this paper, according to the two aspects of agricultural water loss, this paper proposes to improve the utilization rate and productivity of agricultural water use through water-saving irrigation engineering, agronomic water-saving technologies and water-saving management techniques, and introduce water-saving technologies and their interrelationship and existence problem.