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暗管排水是一项有效的农田排水技术措施。在国外已被一些工业比较发达的国家。广泛用于治理渍害、改造盐碱、沼泽地,并有暗排取代明排的趋势。我国除部分省市已在生产上推广应用外。大多数省市仍处于试验推广阶段。据有关资料到1983年前后暗管排水面积较多的是山西雁北30万亩、江苏7万亩(不包括鼠道及暗墒145万亩)。辽宁、广东及上海各约2万亩。其余各地多为小于万亩。甚至不足千亩的试区。但是,各地及有关部门对暗管排
Hidden duct drainage is an effective field drainage technical measures. In some foreign countries have been more developed industrial countries. Widely used in the treatment of waterlogging, salinization, marshes, and dark row to replace the trend of clear row. In addition to some provinces and cities in China have been promoting the production of applications. Most provinces and cities are still in the experimental stage of promotion. According to the information to the drainage pipe before and after 1983, more drainage area is 300000 acres of Shanxi Yanbei, Jiangsu 70000 mus (excluding rat and moisture 1.45 million mu). Liaoning, Guangdong and Shanghai about 2 acres. The rest are mostly less than mu. Even less than acres of trial area. However, all localities and departments on the hidden row