“七五”国家重点科技攻关项目——低压管道输水灌溉技术日前在水利部通过鉴定。这项技术目前在4.7万亩的试区取得了成功,并在60万亩土地上进行了推广,取得了良好的经济效益和社会效益。在黄淮海平原,缺水已成了限制农业发展的重要因素,随着地下水的超量开采,不少地区已出现大面积的地下水漏斗区。而同时,现有井灌区土渠输水 “Seventh Five-Year” national key scientific and technological project - low-pressure pipeline irrigation technology recently passed the Ministry of Water Resources identification. The technology is currently 47,000 acres of the trial area has been successful, and in 600000 acres of land for promotion, achieved good economic and social benefits. In the Huang-Huai-Hai Plain, water shortage has become an important factor limiting the development of agriculture. With the excessive exploitation of groundwater, large areas of groundwater funnel areas have emerged in many areas. At the same time, the existing wells irrigated canal drainage