湿害,是影响三麦高产的重要原因之一。及时降低农田的地下水位,就能有效地控制湿害,大幅度地提高三麦产量。由江苏省金坛县登冠公社新亭大队广大干群,经过几年反复实践搞成的金坛式麦田暗沟,就是降低农田地下水位的一种好形式。麦田暗沟是将麦田排水沟设置在土层里,表面不留沟形,称之谓麦田暗沟。它由上部沟 Wet damage is one of the important factors that affect the high yield of Sanmai. Timely reduce farmland water table, we can effectively control the wet damage, significantly improve the yield of three wheat. The vast majority of the cadres at the Xintai Brigade, Dengguan Commune, Jintan County, Jiangsu Province, after years of repeated practice, became a good form of reducing the groundwater table in farmland. Catchy trench is set in the wheat field gutter in the soil, the surface does not stay ditch-shaped, called the wheat field undergrowth. It consists of an upper ditch