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林业科学 ›› 2013, Vol. 49 ›› Issue (12): 171-174.doi: 10.11707/j.1001-7488.20131224

• 研究简报 • 上一篇    下一篇

Bt与灭幼脲混剂对美国白蛾第2,3代幼虫的联合毒力及防治效果

徐明1, 刘冬梅2, 徐福元1, 施建华3   

  1. 1. 江苏省林业科学研究院 南京 211153;
    2. 东海县林牧业局 东海 222300;
    3. 东海县森林病虫害检疫防治站 东海 222300
  • 收稿日期:2012-12-12 修回日期:2013-01-31 出版日期:2013-12-25 发布日期:2014-01-01

Joint-Toxicity and Control Effect of the Mixture of Bt and Chlorbenzuron to the Second and Third Generation Larva of Hyphantria cunea

Xu Ming1, Liu Dongmei2, Xu Fuyuan1, Shi Jianhua3   

  1. 1. Forestry Academy of Jiangsu Province Nanjing 211153;
    2. Forest & Stockbreeding Bureau of Donghai County Donghai 222300;
    3. Forest Pest Quarantine & Control Station of Donghai County Donghai 222300
  • Received:2012-12-12 Revised:2013-01-31 Online:2013-12-25 Published:2014-01-01

关键词: 美国白蛾, Bt与灭幼脲混剂, 毒力测定, 增效作用

Abstract:

The Hyphantria cunea's harm has a further exacerbating trend in Jiangsu and the surrounding region. In this study, we found that a mixture of Bt and chlorbenzuron has high toxicity to the second and third generation larva of H.cunea by screening, toxicity test and effect comparison. The toxicity test proved that the synergism was 0.76 and 0.83 times, and the synergized effect was notable. The field test and the aerial control experiment showed that the toxic effect and the lethal rate of the mixture were higher than eigther agent. It is concluded that the mixture of Bt and chlorbenzuron is an effective and safe treatment for controlling H.cunea.

Key words: Hyphantria cunea, mixture of Bt and chlorbenzuron, toxicity test, synergized action

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