我团的耕地多年来一直是用大马力拖拉机牵引铧式犁耕翻，最大耕深为３８０ｍｍ，长期使用铧式犁耕翻土地，耕层以下逐步形成板结坚硬层，土地的通气和透水性总也得不到改善，给作物的生长环境带来不利影响，特别是对中低产田的改良尤为困难。为改变这一状况，我团先后引进... For many years, the arable land in our regiment has been plowed and plowed by a large horsepower tractor. The maximum tillage depth is 380 mm. Plow-tillage land has been used for a long time. Hard crusts formed below the tillage layer. The total aeration and water permeability of the land It will not be improved, which will adversely affect the growth environment of crops. In particular, it is especially difficult to improve middle and low yield fields. In order to change this situation, our group has introduced ...