棉花生长后期,如遇不良气候,便会出现烂桃烂铃,造成减产,棉农对此十分重视。但如果做好以下几点,便可减少霉烂。 一是适时打顶。棉花结桃过程是自下而上,由主茎向四方发展的,所以靠近主茎愈近和下部的果枝成桃率高,如在肥力中等的田块每667m~2棉株有3000～4000株左右,到大署和立秋时株高1米左右,果枝12～16个,下部座桃牢,中部露苞叶,上部 In the later stage of cotton growth, in case of bad weather, rotten peach bell will occur, resulting in reduced production, cotton farmers attach great importance to this. But if you do the following, you can reduce mildew. First, timely topping. Cotton peach process is bottom-up, from the main stem to the Quartet development, so close to the main stem and the lower part of the fruiting branches into the peach rate, as in fertile field plots per 667m ~ 2 cotton have 3000 ~ 4000 Strain left and right, to the Department and the beginning of autumn plant height of about 1 meter, fruiting branches of 12 to 16, the lower seat peach prison, the middle of the leaves of the bracts, the upper part