由于能源和水资源的日趋紧张,改革古老的地面渠道输水灌溉技术,推广低压管道输水灌溉,逐步实现农田灌溉系统管道化,是当代国际上的一个总发展趋势。美国、苏联、日本等国家的管灌技术都在大面积推广应用。我国除少数经济力量较强的地区有一定发展外,多数处于试点阶段。本文通过 Due to the increasingly tense energy and water resources, the reform of the ancient ground water transport irrigation technology, the promotion of low-pressure pipelines, and the gradual realization of irrigation pipelines in farmland are an international trend. The United States, the Soviet Union, Japan and other countries in irrigation and drainage technology are widely applied. In addition to some development in our country with a few economically strong areas, most are in the pilot phase. This article is adopted