锦州地区1979年机械化大垄深松92万亩,增产效果十分明显.据多点调查,玉米增产幅度10～20%;高粱增产8～15%;大垄双行或双株大豆增产15～24%;大垄双行谷子增产7～10%.其增产原因是:1.大垄深松能改善通风透光条件,有利于作物生长.把小垄改成2.1～2.4尺大垄,玉米可以单株密植,高梁、大豆可搞一垵双株,谷子可 According to the survey, the yield of maize increased by 10-20%; the yield of sorghum increased by 8-15%; the yield of large double row double row or double row soybean increased by 15-24% %; Large ridge double row of millet increased yield 7 ~ 10% .The reason for the increase is: 1 large ridge deep pine can improve the ventilation and light conditions conducive to crop growth.The small ridge into 2.1 ~ 2.4 feet long ridge, corn can Plant close planting, sorghum, soybeans can engage in a double strain, millet can be