| 溴虫腈对甜菜夜蛾的毒力及应用研究简报 |
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| 引用本文： | 许小龙,顾中言,韩丽娟,杨阳.溴虫腈对甜菜夜蛾的毒力及应用研究简报[J].农药学学报,2003,5(3):85-88. |
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| 作者姓名： | 许小龙 顾中言 韩丽娟 杨阳 |
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| 作者单位： | 1.江苏省农业科学院 植物保护研究所,江苏 南京 210014 |
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| 摘 要： | 室内毒力测定结果表明,溴虫腈EC对甜菜夜蛾卵的孵化有一定的抑制作用,但作用较小,20 mg/L药液浸卵后,卵孵化抑制率为43.11%。溴虫腈EC对甜菜夜蛾1~2龄幼虫的毒力很高,3龄后随着虫龄的增大,甜菜夜蛾对溴虫腈的敏感性显著降低。室内钵栽试验表明,20 mg/L溴虫腈EC对甜菜夜蛾2龄幼虫的减退率在91.43%~100%之间,持效期15 d以上。田间试验表明,溴虫腈对甜菜夜蛾有优异的防治效果,每公顷施用5%溴虫腈EC 1 200 mL,防治效果在95％以上,持效期为20 d。
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| 关 键 词： | 溴虫腈 甜菜夜蛾 毒力 防效 |
| 文章编号： | 1008-7303(2003)03-0085-04 |
Study on the Toxicity and the Effectiveness of Chlorfenapyr to Spodoptera exigua |
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| XU Xiao-long,GU Zhong-yan,HAN Li-juan and YANG Yang.Study on the Toxicity and the Effectiveness of Chlorfenapyr to Spodoptera exigua[J].Chinese Journal of Pesticide Science,2003,5(3):85-88. |
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| Authors: | XU Xiao-long GU Zhong-yan HAN Li-juan and YANG Yang |
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| Institution: | 1.Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China2.Xinghua Agricultural Bureau, Jiangsu Province, Xinghua 225700, China |
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| Abstract: | The result of the test in laboratory showed that the control rate of hatching to Spodoptera exigua (Hübner) was 43.11% with 20 mg/L chlorfenapyr EC. The toxicity of chlorfenapyr to S.exigua deduced with the increase of instar. Larva in 1~2 instar was the most sensitive. In pot test,the mortality was 91.43%~100% and residual activity was over 15 days at concentration of 20 mg/L.The result of trial in field indicated that the control effects of 5% chlorfenapyr EC to S. exigua at 1 200 mL/hm2 was 95% and the high effectiveness was maintained for 20 days. |
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