我乡有2万亩涝洼地,粮食单产只有200斤左右。近几年来,为了改造涝洼地,我们在“修、深、增、客、种”五方面下功夫,粮食产量逐年提高,1982年单产达850斤,是治理前的3.6倍。去年,经治理的涝洼地主要做两杂制种田,每亩产种350～400斤。我乡改土治涝的“五字诀”是: 1.修:修建配套排水工程。根据涝洼地的地形等情况,修建排水干渠、支渠、毛渠,设立排水站,形成四通八达的方田化排水网。同时,在涝洼地的外缘挖封闭壕,防止外水侵入。为了有效地降低地下水位,利于 I Township, 2 million mu of flood depression, grain yield of only about 200 pounds. In recent years, in order to rebuild waterlogged depressions, we have worked hard in the five areas of “cultivation, deepening, increasing, passenger and species cultivation.” Grain output has been increasing year by year. In 1982, the yield was 850 kg, 3.6 times of that before the flood control. Last year, the floodwaters under control mainly made two miscellaneous farming systems, producing 350 to 400 kilograms per mu. My rural soil and waterlogging to change the “five tactic” is: 1. Repair: construction supporting drainage project. According to the topography and other conditions of waterlogged depression, the construction of drainage trunk canal, branch canal, furrow, the establishment of drainage stations, formed in all directions Fang Tianhua drainage network. At the same time, excavation of closed ditches in the outer edge of waterlogged depression, to prevent water intrusion. In order to effectively reduce the groundwater level, benefit