我们从1969年开始试验麦田开暗沟,现有麦田基本上改用了暗沟,促进了三麦的高产。一、暗沟的优点: 1.排水情况好,有利于促根壮秆争大穗夺高产。暗沟排除地面水和降低地下水都很快,能有效地解决麦田的湿害。1973年2月5日下了2寸左右的雨,据五 Since 1969, we experimented with open-ditch furrows in the wheat fields. Basically, the existing wheat dams have been switched to underdrains, thus boosting the yield of the three-crop wheat. First, the advantages of undercut: 1. Drainage is good, is conducive to promoting strong stalks compete for big spike yield. Ditch excludes surface water and groundwater are very fast, can effectively solve the wet field wheat. February 2, 1973 under about 2 inches of rain, according to five