论文部分内容阅读
通过对江苏省5大农区5个点连续免耕两年后土壤容重收缩性能和破碎强度的测定，结果表明：免耕能改善土壤结构和土壤排水通气状况。体变率与土壤＜0．01mm的物理性粘粒和＜0．001粘粒含量相关密切；常耕与免耕破碎强度的差值也与粘粒含量有一定的相关。因此，对土壤粘粒含量较高的土壤更不能烂耕烂种和过多的水旋水耙。
The results showed that no-tillage could improve the soil structure and soil drainage and aeration conditions after two years of zero-tillage and no-tillage in five large-scale agricultural areas in Jiangsu Province. The rate of deformation is closely related to the physical clay <0.01mm and the clay content <0.001. The difference between crushing strength and no-tillage is also related to the clay content. Therefore, soil with higher clay content should not be rotten and rotted with too much water.