玉米是淮北地区的主要农作物,以夏播为主。由于夏玉米生育期短,自身调节能力差,生长环境恶劣,在生长过程中每年都有倒伏现象发生。倒伏有3种情况,即茎倒伏、根倒伏和茎倒折。倒伏在玉米拔节期、喇叭口期、抽雄吐丝期、灌浆期均有不同程度发生。每年发生倒伏的面积为7%~20%,给农业生产和农民增收造成严重损失。1玉米倒伏的原因1.1栽培措施不当采用“一条龙”浅旋起垄机进行条播出现倒伏较重,而采用贴茬免耕机进行条播和免耕点播的倒伏程度 Corn is the main crops in Huaibei area, mainly in summer sowing. As the summer maize growth period is short, poor self-regulation, poor growth environment, the phenomenon of lodging in the growth process every year. There are 3 situations for lodging, ie stem lodging, lodging of roots and stem folding. Lodging in corn jointing stage, trumpet period, tasseling silking stage, filling stage have varying degrees of occurrence. The annual lodging area is 7% ~ 20%, causing serious losses to agricultural production and farmers’ income. 1 reasons for the lodging of corn 1.1 improper cultivation practices using “one-stop ” light dunnage machine for barn appear heavy lodging, and the use of stubble tillage machine for sowing and no-till on-demand lodging degree