棉花烂铃在我省各棉区均有发生。据调查,一般年份烂铃占结铃总数的5—20％,较重年份可达30％以上,严重地影响着棉花的产量和品质。一般烂铃可损失产量10—20％,衣分降低7.3％,纤维长度下降4.4—26.7％。如果解决了烂铃问题,即使在现有品种和栽培管理条件下,其增产作用相当于更换一次优良品种。 Bad cotton boll cotton in our province have occurred. According to the survey, the common year of rotten bolls accounted for 5-20% of the total number of bolls, and the heavier years could reach more than 30%, seriously affecting the yield and quality of cotton. General bad bell loss of production of 10-20%, 7.3% lower clothing, fiber length decreased by 4.4-26.7%. If the solution to the problem of rotten bell, even under the current varieties and cultivation management conditions, its production is equivalent to the replacement of a good variety.