种庄稼不用深耕就可播种,而且收成不会减少。这种新型的耕作方式就是机械化保护性耕作。 保护性耕作是一种新型旱地耕作方法。它起源于20世纪30年代的美国,目前美国、加拿大、澳大利亚等国家已几乎全部采用以机械化为支撑的保护性耕作。 Crops can be sown without deep plowing, and harvests will not diminish. This new farming method is mechanized conservation tillage. Conservation tillage is a new dry farming method. It originated in the 1930s in the United States. At present, nearly all the countries such as the United States, Canada and Australia have adopted mechanized support for conservation tillage.