编者按小麦、水稻、玉米是我国三大主要粮食作物。如今,小麦生产基本实现了全过程机械化作业,推广普及程度在一些地区达到90%以上;水稻生产机械化也已步入了快速发展的轨道;然而玉米从整地、种植到田间管理等工序虽然基本实现了机械作业,但在玉米生产中占1/2劳动量的收获作业, Editor’s note Wheat, rice, corn are three major food crops in our country. Nowadays, the wheat production has basically realized the whole process of mechanization operation, and the popularization degree has reached more than 90% in some areas. The mechanization of rice production has also entered a rapid development track. However, the process of corn from land preparation to plantation to field management has basically taken place Machinery operations, but in maize production accounted for 1/2 of the amount of harvest work,