棉花烂铃是其生长中后期的重要病害之一。一般年份烂铃率在10%左右,严重年份可达20%。该病对棉花产量、纤维品质均有较大影响。低温多雨是棉花烂铃发生的主要因素,一般入夏以后,我省各棉产区普遍多雨,很容易造成棉花烂铃的严重发生。如不采取及时有效的措施防治,将给棉花生产造成严重损失。 Cotton boll is one of the most important diseases in the late growth period. In general, the annual rate of rotten boll is about 10% and in severe years up to 20%. The disease has a greater impact on cotton yield, fiber quality. Low temperature and rainy weather is the main factor of cotton boll. Generally, after entering the summer, all the cotton producing areas in our province are generally rainy. It is easy to cause the serious occurrence of cotton boll. If we do not take timely and effective measures to prevent and control, it will cause serious losses to cotton production.