本文整理和分析了从1980年以来数次免耕试验所得到的有关土壤理化性状方面的资料,比较详细地讨论了由于免耕,尤其是加覆盖的免耕所引起的土壤理化性状的变化。指出免耕有利于创造具有良好结构的土壤,无覆盖的免耕在许多土壤理化性质上与传统耕作方法差异不大,而有覆盖的免耕在水分保持和钾素供应等方面都有其独特的优越性。 This paper collated and analyzed data on soil physical and chemical properties obtained from no-till experiments on several occasions since 1980 and discussed in more detail the changes of soil physical and chemical properties due to no-till, especially no-tillage with cover. Point out that no-till helps to create a well-structured soil. No-till no-till has little difference from the traditional farming methods in many physical and chemical properties of the soil, whereas the no-till with coverage has its own uniqueness in water retention and potassium supply The superiority.