玉米倒伏在我县历年都有发生,只是面积大小,严重程度,发生地点不同而已。个别年份发生倒伏的面积占播种面积50％以上,严重的社队,倒伏率可达70％—80％。玉米倒伏以后穗粒数减少、千粒重下降,产量降低。因此,玉米倒伏是影响我县玉米高产、稳产的重要因素之一。玉米倒伏受气候、品种、栽培措施等因素影响。大风和冰雹是造成玉米倒伏的主要气象 Corn lodging in our county over the years have occurred, but the size of the area, the severity of the place of occurrence is different. In some years, the area of ​​lodging occupies more than 50% of the sown area. Serious communes and lodgings have a lodging rate of 70% -80%. After lodging of corn, the number of grains decreased, the grain weight decreased and the yield decreased. Therefore, the lodging of maize is one of the important factors affecting the high yield and stable yield of maize in our county. Corn lodging by the climate, variety, cultivation measures and other factors. Gale and hail are the main meteorological phenomena that cause lodging of corn