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一、合理布局,采取正确的病虫害防治策略为延缓害虫抗性种群的产生,延长抗虫棉在生产上的使用时间,应尽量避免大面积的单一集中连片种植,不引进和推广转Bt基因玉米。针对山东省棉区的农业生态特点,为合理利用抗虫棉,经济有效地控制棉花病虫害,应采取以下防治策略:以品种抗病性控制棉花枯萎病和黄萎病;注意拌种防苗病;以苗蚜、棉叶螨和“伏蚜”为防治
I. Reasonable layout and proper pest control strategies In order to delay the emergence of pest resistant populations and prolong the use time of insect-resistant cotton in production, a large area of single contiguous planting should be avoided as far as possible, and the introduction and promotion of transgenic Bt gene corn. In view of the characteristics of agroecology in cotton area of Shandong Province, in order to rationally utilize insect-resistant cotton and control cotton pests and diseases economically and effectively, the following control strategies should be taken: cotton blight and verticillium wilt are controlled by disease resistance; To seedling aphids, cotton spider mites and “Aphid ” for the prevention and treatment