引起棉花烂铃烂桃最主要的原因;一是氮肥施用量过大或过迟,常引起棉株生长过旺,荫蔽严重,抗病害能力大大减弱;二是棉花花铃期暴雨或秋露雨过多,田间湿度大,排水不畅,病菌的滋生和侵入;三是红腐病、炭疽病和铃疫病等,也是危害棉桃,引起烂铃烂桃 Causing cotton boll rotten peach the most important reason; First, nitrogen fertilizer is too large or too late, often lead to cotton plants over-growth, shade serious, greatly reduced resistance to disease; second flower cotton boll storm or autumn rain Too much, field humidity, poor drainage, bacteria breeding and invasion; Third, red rot, anthracnose and bell disease, but also endanger the bolls, causing rotten rotten peach