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1抗虫棉田害虫发生规律与特点发生了变化1.1抗虫棉对鳞翅目害虫表现出突出的抗性。抗虫棉对棉铃虫及玉米螟、造桥虫等鳞翅目害虫表现出高抗性,基本上不需要防治这些害虫。1.2棉蚜、棉盲蝽等刺吸式口器害虫发生危害严重。因为抗虫棉田基本不防棉铃虫,用药次数大大减少,以前得到
1 insect pest cotton pest occurrence of the rules and characteristics of 1.1 insect-resistant cotton lepidopterous pests showed outstanding resistance. Bt cotton showed high resistance to Helicoverpa armigera and Lepidoptera, such as corn borers, bugs, and so on. Basically, it is not necessary to control these pests. 1.2 cotton aphids, cotton lice and other piercing suction mouthparts pests serious harm. Because insect-resistant cotton fields are basically not against bollworm, medication greatly reduced the frequency of use, previously obtained