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棉花进入结铃吐絮期易发生烂铃、烂桃现象,一般地块发生率10%左右,严重地块达30%以上,造成棉花减产和降低棉花品质,因此,采取一定措施防治烂铃是棉花增产、增收的有效途径。一、棉花烂铃的原因1、气候条件及农事操作原因。花铃期雨水过多,排水不畅,温度较高,田间湿度大,给各种病原菌滋生和侵染创造了有利条件,严重影响棉铃的正常开裂,病菌容易传播侵入,增加烂铃发生率。追施氮肥过量,导致棉田生长过旺,荫蔽严重,抗病力下降也造成烂铃。
Cotton into the boll bolting period prone to rotten bell, rotten peach phenomenon, the general block rate of about 10%, a serious block up to 30%, resulting in cotton yield and reduce cotton quality, therefore, to take some measures to prevent rotten bell cotton Increase production and increase revenue effective way. First, the reasons for cotton boll 1, climatic conditions and agricultural operation reasons. Flowering period of excessive rain, poor drainage, high temperature, field humidity, to a variety of pathogenic bacteria and infection has created favorable conditions, seriously affecting the normal cracking of cotton bolls, bacteria easily spread invasion, increase the incidence of rotten bell. Topdressing excessive nitrogen, leading to over-growth of cotton fields, shade a serious decline in disease resistance also caused by bad bell.