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由于害虫种群中的个体差异总是存在,因此使用杀虫剂的任何方法要想100%灭杀靶标虫种完全是不可能的。有些个体由于它们具有遗传能力,总会克服杀虫剂的压力最后能够有效地使杀虫剂解毒,或者只是受杀虫剂所刺激而生存下来。害虫抗药性的这种生物进化自然现象,虽然早在十九世纪末就有认识,但是,直到1914年才有人提出正式报告(Melan(?)der)。到目前为止,抗性虫种已发展到数百种之多,关于抗性问题的研究已普遍开始重视。害虫发生抗性愈来愈多的事例证明:有些虫种不仅仅克服了杀虫剂和熏蒸剂,而且还涉及到对不育剂、昆虫激素的抗性以及一些非化学药物的措施,例如对氧的耗费量、对二氧化碳和对伽玛射线的影响(钱普等1976)。
Since individual differences in the pest population are always present, it is completely impossible for any method of using the insecticide to kill 100% of the target species. Because of their genetic ability, some individuals will always overcome the insecticide’s stress and eventually can effectively detoxify the insecticide or survive only with the insecticide. This biologically evolutionary natural phenomenon of pest resistance, though known as early as the end of the nineteenth century, was not formally reported until 1914 (Melan (?) Der). So far, resistant insects have grown to hundreds of species, the study of resistance has generally begun to pay attention. More and more cases of pest resistance show that some species of insects not only overcome pesticides and fumigants, but also resistance to inoculants, insect hormones, and some non-chemical measures such as The amount of oxygen consumed, the effect on carbon dioxide and on gamma rays (Qianpu et al. 1976).