一、概况与效应所谓免耕法(No—tillage)系指前茬收获前后,除直接套播或移栽下茬作物,并把残茬切成小段,均匀覆盖在地面上外,不再进行任何土壤耕作措施。西方国家在五十、六十年代,就大力示范推广少耕、免耕法,以代替传统耕翻后播种的耕作法,取得了显著的妙果。我国早在秦、宋时代,就有“地久耕则 I. Overview and effect The so-called no-tillage method (No-tillage) refers to before and after harvesting before harvesting, in addition to direct intercropping or transplanted under the crop, and the stubble cut into small pieces, evenly covered in the ground, no longer Any soil cultivation measures. In the 1950s and 1960s, Western countries vigorously demonstrated the promotion of tillage and no-tillage in order to replace the traditional tillage method of plowing and tillage and achieved remarkable results. As early as the Qin and Song dynasties in our country, there was “a long time farming.”