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用氰戊菊酯、马拉硫磷及菊马昆剂分别汰选棉铃虫(Heliothis armigera)种群16代、每三代测定1次各种群对相应汰选药剂的敏感水平。结果表明,以上三个汰选种群对相应药剂的抗药性分别增长了68.02、7.76和3.48倍,氰戊菊酯单剂比菊马混剂抗性增长快19.6倍,混剂显示出对棉铃虫抗性显著的延缓作用。用计算机模拟预测混剂使用寿命,若3种药剂均连续使用30次则氰戊菊酯、马拉硫磷、菊马混剂的抗药性将分别提高817.5、14.2和5.2倍;若以抗性上升30倍及每年用药2-3次为标准,菊马混剂比单用氰戊菊酯可延长5倍的使用寿命,笔者认为把谱效混剂作为一项措拖组装到抗性治理方案(IRM)中去,科学合理地治理棉铃的抗药性是一个行之有效的措施。
Sixteen generations of Heliothis armigera population were selected by fenvalerate, malathion and chrysanthemum, and the susceptibility of each group to the corresponding elimination agent was determined every three generations. The results showed that the resistance of the three selected populations to the corresponding agents increased by 68.02, 7.76 and 3.48 times, respectively. The single herbicide fenvalerate showed a 19.6-fold increase in resistance to chrysanthemum mixture, Resistant significantly delayed effect. If the three kinds of agents were used continuously for 30 times, the drug resistance of fenvalerate, malathion and juju mixture would be increased by 817.5, 14.2 and 5.2 times respectively; if the resistance Up 30 times and 2-3 times per year as the standard medicine, juju mixture than fenvalerate alone can extend the service life of 5 times, I believe that the spectrum mixture as a drag and drag assembled to the resistance control program (IRM) go, scientific and rational management of cotton boll resistance is a proven measure.