小麦倒伏是小麦减产的主要因素之一。主要是使小麦的穗实粒数减少,千粒重下降。小麦倒伏后,植株的受光条件恶化,一部分叶片逐渐枯死,另一部分叶片也会受光不足。从而造成小麦的光合作用面积减少,光合作用效率降低而严重影响小麦生长后期体内干物质的积累。小麦倒伏后,有的根系被拉断或外露,使小麦根系对水分与养分的吸收 Wheat lodging is one of the major factors in wheat yield reduction. Mainly to reduce the number of spikelets in wheat, grain weight decreased. After the lodging of the wheat, the light-receiving conditions of the plants are deteriorated, and part of the leaves gradually become dead and the other part of the leaves also receive insufficient light. As a result, the area of ​​photosynthesis of wheat decreased, and the photosynthesis efficiency decreased, which seriously affected the accumulation of dry matter in the late stage of wheat growth. After the lodging of wheat, some of the roots are pulled off or exposed, so that wheat root moisture and nutrient absorption