[目的]通过TDM模型研究田间斜纹夜蛾成虫当代饲毒后,对子代种群的毒力.[方法]在田间以3种浓度斜纹夜蛾核型多角体病毒感染斜纹夜蛾成虫,分析病毒对斜纹夜蛾幼虫致死的浓度效应和时间效应.[结果]结果表明,子1代斜纹夜蛾从孵化开始,第5天日死亡率最高,且随着病毒浓度的升高,LT50值减小,在稀释浓度为200倍时,LT50值为8.992 8,在稀释浓度为50倍时,LT50值为6.425 6.[结论]病毒虫瘟1号对斜纹夜蛾成虫当代饲毒后,对子代也有明显的控制效果.%[Objective]This research aimed to study the virulence of virus on progeny using time-dosage-mortality model after Spotoptera litura Fabricius adults were fed with virus.[Method]Adults S. litura Fabricius were infected with 3 concentrations virus in the field. And the mortal concentration effects and time effects for S. litura Fabricius larva of virus were analyzed.[Result]The results showed that, F1 progeny of S. litura Fabricius had highest mortality in the fifth day after hatched. When the virus concentration increased, the value of LT_(50) decreased.While the virus was diluted 200 times, the value of LT_(50) was 8.992 8, while the virus was diluted 50 times, the value of LT_(50) was 6.425 6.[Conclusion]Virus Chongwen No.1 had obvious control effects on the progeny of S. litura Fabricius after the adults were fed with this kind of virus.
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