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近几年,棉红蜘蛛在我区发生为害面积逐年扩大,发生期提早,为害程度日趋严重。特别是旱作棉区,矛盾更为突出,严重发生的田块,往往造成棉株早落叶,形成光秆,对棉花的产量与品质影响很大,为摸清发生和为害规律,找出防治方法,我们于1975年对棉红蜘蛛进行了初步观察。现将结果整理如下:
In recent years, cotton spider mites in our area of pest damage has expanded each year, occurred earlier, more serious damage. Especially in dry cotton areas, the contradictions are more prominent. The serious land plots often cause cotton leaves to fall prematurely and form light stalks, which have a great impact on the yield and quality of cotton. In order to find out the occurrence and damage laws, Method, we conducted a preliminary observation of cotton spider mites in 1975. The results are now organized as follows: