从保护性耕作的三个方面(免耕、少耕和覆盖耕作)来看,无论是国外,还是国内,纯免耕应用得很少,因为其存在的弊端较多,且实行起来较难。国外主要是搞少耕和覆盖耕作;国内覆盖耕作搞的也不多,主要是搞了一些不同形式的少耕,黑龙江垦区也大体是这样。黑龙江垦区借鉴国内外少耕法的 From the three aspects of conservation tillage (no-tillage, tillage and tillage), there is very little use of pure tillage, both abroad and in the country, because of its disadvantages and its difficult implementation. Foreign mainly engaged in less tillage and cover farming; domestic coverage of farming is not much, mainly engaged in some different forms of less tillage, Heilongjiang reclamation area is generally the case. Heilongjiang reclamation area at home and abroad learn less tillage method