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棉铃虫是棉花蕾铃期的大害虫,给棉花增产上带来很大障碍。近年来麦田面积扩大,增加第二代的虫源田;大面积的棉田连作和单作棉区,形成了棉铃虫的寄主专化;以及棉田连续地施用化学农药,引起了棉铃虫的抗性。因此在防治上,加大了投资,甚而增产不增收。所以,对棉铃虫的防治,必须按照“预防为主,综合防治”的植保工作方针,才会收到防治之效,达到控制为害。
Cotton bollworm is a large pest in cotton budding period, which brings great obstacles to cotton yield increase. In recent years, the area of wheat fields has been expanded to increase the second generation of insect-derived fields. Large-area continuous cotton fields and single cotton-growing areas have formed host specializations of cotton bollworm and continuous application of chemical pesticides in cotton fields, causing the resistance of cotton bollworm. Therefore, in prevention and control, increased investment, even increase production does not increase income. Therefore, the control of cotton bollworm, we must follow the “prevention first, comprehensive prevention and treatment,” the plant protection work guidelines, will receive the effect of prevention and control, to control the damage.