0引言蕾铃脱落是棉花生产中普遍存在的问题。造成的原因是多方面的,了解蕾铃脱落的规律和原因,对提高棉花单位面积产量具有重要的作用。1棉花蕾铃脱落的原因1.1光照影响光是棉花进行光合作用的必要条件。在有些群体郁闭的棉田 0 Introduction Lace-shedding is a common problem in cotton production. The reason is caused by many aspects. It is important to know the regularity and reason of the buds falling off and to improve the yield per unit area of ​​cotton. 1 reasons for the fall of cotton buds 1.1 Light effects Light is the necessary conditions for photosynthesis of cotton. In some groups of closed cotton fields