农用不育剂防治烟青虫的研究

The control of Heliothis assulta Guenee in tobacco using agricultural sterilants

不育治虫也称遗传防治 ,是害虫综合防治的一项崭新内容。当前 ,国内外成功的实例不多。本研究选出了烟青虫雄性不育剂和雌性不育剂 ,将其与烟青虫性诱剂结合 ,制成小型不育引诱器 ,每亩烟田插置一个 ,即可诱使田间烟青虫成虫吮食不育剂 ,食后即成为不育蛾。不育蛾仍可与正常蛾交配 ,不但使交配对象成为不育 ,还可使已正常交配的成虫成为不育 ,从而降低田间的虫量 ,减少为害。田间试验结果表明 ,对烟青虫的防治效果达 90 %以上。使用不育剂可以减少田间农药用量和施药次数。本研究选出的不育剂对人畜无害 ,使用简便 ,价格较低 ,对环境无污染。

Agricultural sterilants had been used as a new agent in the control of Heliothis assulta Guenee. three effective sterilants were selected among 14 materials, 2 for male moth (Gossypol and Ledertepa),1 for female moth (Fluorouracil). A simple method for direct field application has been developed by hanging a small moth trap container filled with sterilant and sex allure on a pole inserted in the field (15 poles per hectare). The result of field test showed that the adults became sterile after sucking sterilant. The sterile adult could mate with normal adult and made it sterile. Furthermore, if the adult mate with a normally mated adult, it could also made it sterile. The population of Heliothis assulta Guenee was significantly decreased. The control effect was over 90%. This method could reduce the use of pesticides and the environmental pollution.