随着杀虫药剂的连年大量使用,害虫的抗性问题表现得越来越突出。因此,加强对害虫抗性的监测工作越发显得必要。在从事害虫抗性的监测中,必须明确的是,昆虫的抗性就是昆虫的一个品系发展了能忍受对正常种群大部分个体是致死剂量的毒剂的能力。抗性是种群的特性,而不是个体昆虫改变的结果。也就是说,只有当种群的大部分最初是敏感的,而当用一种杀虫药剂选择后,这 As insecticides are used year after year, pest resistance becomes more and more prominent. Therefore, it is increasingly necessary to strengthen the monitoring of pest resistance. In monitoring pest resistance, it must be clear that insect resistance is a strain of insects that develop the ability to tolerate toxins that are lethal to most individuals in normal populations. Resistance is a characteristic of the population, not the result of individual insect changes. That is, only when most of the population is initially sensitive and when selected with an insecticide, this