棉花落蕾落铃的主要原因,分外部损伤和内在生理两个方面,外部损伤所引起的蕾铃脱落,主要是虫害、田间管理的机械损伤(如中耕、治虫、灌溉、施肥及整枝等)和台风袭击所造成。这里讨论的是棉花蕾铃脱落的生理原因及其主要的防止措施。蕾铃脱落的生理原因,是一个复杂的问题。在这儿,首先谈内在的生理原因和外界环境因素的相互间的关系,这样有利于分析脱落的生理原因。通过外界环境因素引起植株体内生理变化,而环境因素导致植株体内生理变化而不利于蕾铃生长发育的方向,则遭致蕾铃的生理脱落。环境因素是 The main causes of falling cotton boll fall ring, external damage and internal physiology, the external damage caused by the fall of the bud, mainly pests, field management of mechanical damage (such as cultivation, pest control, irrigation, fertilization and pruning, etc.) Caused by the typhoon attack. Discussed here is the physiological causes of cotton buds fall off and its main preventive measures. The physiological reason for the falling buds is a complex issue. Here, first of all, to talk about the internal physiological causes and external environmental factors, the relationship between each other, which is conducive to the analysis of physiological causes of shedding. Environmental factors caused by external environmental physiological changes in plants, and environmental factors lead to physiological changes in plants is not conducive to the growth and development of the direction of the buds, the physiological loss caused by the buds. Environmental factors are