由于夏玉米一般生育期短,不适宜进行“蹲苗”来控制株高,加之此期又正值７、８月雨季,因而常常造成夏玉米后期营养生长过盛、株高秆细、倒伏空棵现象发生。为解决这一问题,近几年临城县土肥站通过试验示范,终于摸索出利用乙烯利降低夏玉米株高防止倒伏,确保实现高产稳产的有效? Summer corn as a result of the general growth period is short, not suitable for “squat seedlings” to control the plant height, combined with this period is positive in July and August rainy season, which often leads to summer maize vegetative overgrowth, tall stalks, lodging empty tree Phenomenon happened. In order to solve this problem, in recent years, Lincheng County Fertilizer Station through pilot demonstration, and finally found out the use of ethephon to reduce the summer corn plant height to prevent lodging, to ensure high and stable yield effective?