由于耕作制度的改变,秸秆还田面积的增加,麦农“七分种,三分管”的理念有所动摇,有的耕作粗放,片面加大播种量,既浪费地力,又过分浪费种质资源,致使小麦倒伏现象时有发生,严重影响产量。小麦倒伏从时间上可分为早倒和晚倒,从形式上分为根倒和茎倒。根倒多发生在晚期,受损失较小;茎倒则在甲期和晚期均可发生,受损失较大,是倒伏的主要形式。 Due to the change of farming system and the increase of the area of ​​returning straw to straw, the concept of Mai Nong’s “seven species and three branches” has been shaken. Some of them are extensively cultivated and one-sidedly increasing the planting volume, which is not only wasteful of soil fertility but also excessively wasteful Quality resources, resulting in the phenomenon of lodging of wheat occur from time to time, seriously affecting the yield. The lodging of wheat can be divided into early fall and late fall from the time, which is formally divided into roots and stems. More root inversions occur in late stage, less damage; stem down in the late stage and a can occur, suffered greater damage, is the main form of lodging.