河北省中南部是我省夏玉米集中种植的地区。这一地区夏季灾害性天气频发,玉米倒伏现象时有发生,玉米倒伏对产量影响很大,轻度倒伏造成地块减产15%~25%;中度倒伏造成减产25%~50%;重度倒伏造成减产60%以上甚至绝收。倒伏成为玉米减产最重要原因之一。针对玉米倒伏的原因,进行了调查和分析,并提出了预防的措施和补救方法。玉米倒伏的主要原因.品种原因现在生产上推广的玉米品种多达几十个,虽然都经过了本区域的审定,但是抗倒性上有很大的区别,未必 Central and southern Hebei Province is the concentrated summer corn cultivation areas. In this area, frequent summer disastrous weather and lodging of maize occur from time to time. Maize lodging has a great impact on the yield, with a slight lodging causing a 15% to 25% reduction in mass production, a 25% to 50% reduction in moderate lodging, Lost yield more than 60% or even absolute. Lodging has become one of the most important reasons for the corn cut. In response to the reasons for the lodging of corn, the investigation and analysis were carried out and preventive measures and remedies were put forward. The main reason for the lodging of corn Variety reasons Now up to dozens of varieties of corn on the promotion of production, although they have been validated in the region, but there is a big difference in lodging resistance, not necessarily