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红铃虫危害棉花后,不但造成落蕾、落花及大量的僵瓣出现,使产量显著减低;并且使纤维的色泽、拉力、长度、曲度以及种子的含油量,发芽率,都大大的受到影响。我省常年因红铃虫损失棉产在10—20%,品级降低1—2级,因此,消灭红铃虫是当前提高棉花产量及品质工作中急待解决的问题之一。红铃虫防治工作肯定应以“越冬防治为主,田间防治为辅”。在收花晒花期间,老熟
Red bollworm endanger the cotton, not only led to falling buds, falling flowers and a large number of stiff petals appear, so that significantly reduced production; and make the fiber color, pull, length, curvature and seed oil content, germination rate, are greatly affected influences. In our province perennial years because of pink bollworm loss of cotton in the 10-20%, grade level 1-2, therefore, the elimination of pink bollworm is to improve cotton yield and quality work one of the problems to be solved. Red bollworm prevention and control work must be “overwintering prevention and control, supplemented by field control ”. During the sunflowers, mature