小麦、玉米是我国两大粮食作物,是我国农业生产的主要对象和重点,也是农业机械化作业的主要对象和重点。到目前,作为我国粮食主产区的北方小麦生产机械化已基本实现,而玉米生产机械化却表现相对缓慢,主要原因之一在于小麦、玉米的耕作方式与机械化方面出现了一些矛盾,需 Wheat and corn are two major grain crops in our country. They are the main targets and focuses of agricultural production in our country. They are also the main targets and focuses of agricultural mechanization. At present, the mechanization of wheat production in the north of the country, which is the main grain-producing area in China, has basically been realized. However, the mechanization of corn production has been relatively slow. One of the main reasons is that there are some contradictions in the cultivation methods and mechanization of wheat and corn.