节水灌溉技术的种类很多,下面将常用的一些节水灌溉工程技术介绍给大家。一、渠道防渗技术渠道是我国农田灌溉的主要输水方式。但传统的土渠输水的渗漏损失达50％,有的可多达70％以上,每年渗漏的水量就达1700多亿立方米,这是非常惊人的。因此,渠道不搞防渗是不行的,因为它浪费了大量的水资源。目前全国的渠道总长达300万公里,而进行防渗处理的渠道大约只有55万公里,占总渠道的18％。如果 Many types of water-saving irrigation technology, the following will be some commonly used water-saving irrigation technology introduced to you. First, the channel of anti-seepage technology is the main channel of irrigation water. However, the leakage loss of traditional soil and canal drainage is up to 50%, and some can reach as high as over 70%. The amount of water leaking annually reaches more than 170 billion cubic meters, which is very alarming. Therefore, the channel does not seepage prevention is not enough, because it wasted a lot of water resources. At present, the total number of channels in the country is as long as 3 million kilometers, while only about 550,000 kilometers are provided for anti-seepage treatment, accounting for 18% of the total channels. in case