有这样一组数据摆在我们面前:2002年,我国的小麦机播水平为72.99%,小麦机械收获水平为70%,小麦主要生产环节基本实现了机械化;水稻机械收获水平为20%,南方水稻主产区超过40%;玉米机播水平为46.64%.玉米机械收获水平仅为1.73%。由此可以看出,玉米机械收获已成为农业生产的薄弱环节和农机工业,农机推广、农机市场的热点、难点。为什么作为我国第二大粮食作物的玉米。其机械收获水平这么低呢?事实上,我国玉 There is such a set of data before us: in 2002, the level of China’s wheat broadcasting was 72.99%, the level of wheat harvest was 70%, the main production processes of wheat basically mechanized; rice harvesting level of 20%, the southern rice The main producing area is more than 40%, the corn sowing level is 46.64%, and the corn harvesting level is only 1.73%. It can be seen, corn harvesting has become the weak link in agricultural production and agricultural machinery industry, agricultural machinery promotion, agricultural machinery market hot and difficult. Why corn as the second largest food crop in China. Its level of mechanical harvest so low? In fact, my jade