高温处理对烟草甲各虫态的致死作用研究

目的]为有效实施烟草储藏害虫综合治理、确保烟草及其制品品质提供新方法。方法]研究不同温度（25、35、45、55、60、65℃）下处理不同时间（60、75、90、105、120 s）对烟草甲成虫、蛹、幼虫和卵的致死作用。结果]结果表明，不同处理温度、不同处理时间对烟草甲各虫态的致死作用效果差异显著。在处理温度为25、35和45℃时，该试验各个处理时间对烟草甲各虫态均无致死作用，而在处理温度为55℃以上时对烟草甲各虫态均具有较强的致死作用。在处理温度为60℃时，对烟草甲成虫、蛹、幼虫和卵达到100%致死作用的最短处理时间分别为90、120、75和75 s。结论]高温处理可以作为一种有效的害虫防治方式运用到储烟害虫综合治理当中。

Lethal Effect of Different High Temperature Treat-ments on Different Devel-opment Stages of Lasiod-erma serricorne（Coleopt-era：Anobiidae）

O bjective The aim was to provide a new method for effectively im-plementing integrated pest management （IPM）in stored tobacco insect pest, and keeping the quality of stored tobacco and processed tobacco. Method]The lethal effect of the different high temperature treatments（25, 35, 45, 55, 60 and 65℃） by water bath heat treatment at different exposure times（60, 75, 90, 105 and 120 s）on the adults, pupae, larvae and eggs of Lasioderma serricorne was investigat-ed. Result]The results showed that the lethal effect of the different high temper-ature treatments at different exposure times on the adults, pupae, larvae and eggs of L. serricorne was significantly different. For the treatments at 25, 35 and 45℃, all of the tested exposure times could not negatively affect the de-velopment of the adults, pupae, larvae and eggs of L. serricorne. The tempera-tures over 55℃ had strong lethal effect on the adults, pupae, larvae and eggs of L. serricorne. For the treatment at 60℃, the shortest exposure times of the adults, pupae, larvae and eggs of L. ser-ricorne reaching 100%mortality were 90, 120, 75 and 75 s separately.Conclusion] Therefore, high temperature treatment could be used as an effective method in integrated pest management （IPM） in stored tobacco insect pest.