近年来我省冬季特别多雨,间断发生“烂冬”情况。“烂冬”的年份,雨多、田湿、土烂,严重影响冬作正常生育,导致产量下降。实践证明,在烂冬期间,群众采用开明沟、打暗洞、挖暗沟、埋瓦管等措施改善田间排水条件后,对冬作都有不同程度的增产效果。其中暗洞、暗沟不仅排水效果好、土地利用经济,特别是暗洞用机械操作又比较省工。为此阐明 In recent years, the winter in our province is particularly rainy, intermittent “rotten winter” situation. “Rotten winter” of the year, rainy, wet fields, rotten soil, seriously affecting the winter normal fertility, leading to declining production. Practice has proved that during the winter, the masses open the ditch, dark holes, dig ditches, buried pipe and other measures to improve the field drainage conditions, have different degrees of winter crop production. Among them, dark holes, undergrowth not only drainage effect, land use economy, especially the dark hole with mechanical operation is more labor-saving. To clarify this