玉米是我国主要粮食作物之一,约占粮食播种面积的25%。目前已由播种环节的机械化向全过程机械化发展,玉米机械化收获将成为农机化发展的一个新增长点。一、玉米联合收获机发展的必然性1、发展玉米机械化收获,是建设新农村的迫切要求。玉米收获作为农业生产的重要环节,劳动强度大,占用劳动力多,费工、费时和费力。随着农民收入的增加,农 Corn is one of the main grain crops in China, accounting for about 25% of the sown area of ​​grain. The mechanization of sowing has now been mechanized to the whole process of development, mechanization of maize harvest will become a new growth point of agricultural mechanization. First, the inevitability of the development of corn combine harvester 1, the development of mechanized corn harvest is an urgent requirement for building a new countryside. Corn harvest as an important part of agricultural production, labor-intensive, labor-intensive, labor-intensive, time-consuming and laborious. With the increase of peasants’ income, farmers