应用叶片保护率与校正死亡率评价阿维菌素与氟虫腈
对小菜蛾3龄幼虫的毒力

›› 2009, Vol. 11 ›› Issue (2): 98-105.

应用叶片保护率与校正死亡率评价阿维菌素与氟虫腈
对小菜蛾3龄幼虫的毒力

顾晓军,田素芬,刘文静

（福建农林大学应用生态研究所, 福州 350002）

收稿日期:2008-08-14 修回日期:2008-11-26 出版日期:2009-04-15 发布日期:2009-07-29
作者简介:顾晓军,副教授,博士,从事农药毒理学研究。E-mail:guxiaojun1@163.com
基金资助:
福建农林大学青年教师基金（B0403）;福建省自然科学基金（B0410015）;福建省青年科技人才创新项

目（2004J010）;福建省教育厅项目（2007F5021）;福建省高等学校新世纪优秀人才支持计划资助。

Indoor Toxicity Assessment of Avermectin and Fipronil on 3rd Instar
Larvae of Diamondback Moth by Means of Leaf Protection
Rates and Corrected Mortality Rate

GU Xiao-jun, TIAN Su-fen, LIU Wen-jing

(Institute of Applied Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002,China)

Received:2008-08-14 Revised:2008-11-26 Online:2009-04-15 Published:2009-07-29

摘要/Abstract

摘要：

研究了阿维菌素、氟虫腈两种药剂对小菜蛾\[Plutella xylostella (Linnaeus)\]3龄幼虫的毒力及对

其取食的影响。Potter喷雾法处理后,两种农药处理中的试虫校正死亡率均随着时间的推移而逐渐升高

,但叶片保护率却有降低趋势,且在阿维菌素低浓度处理中更明显。浸叶法处理后,试虫校正死亡率与叶

片保护率均随时间的推移而升高,在阿维菌素的72 h处理中,除了10.00 mg/L、0.31 mg/L两个浓度处理

中试虫校正死亡率与叶片保护率相近外,其余均为叶片保护率显著高于校正死亡率。而氟虫腈的处理中

,则除了12.50 mg/L浓度处理中的叶片保护率与试虫校正死亡率相近外,其余均为试虫校正死亡率与叶

片保护率相近。最后讨论了叶片保护率在农药毒力评价中的意义。

关键词: 小菜蛾\[Plutella xylostella (Linnaeus)\]；氟虫腈；阿维菌素；叶片保护率；校正死亡率

Abstract:

The indoor toxicities of avermectin and fipronil on the 3rd instar larvae of diamondback

moth \[Plutella xylostella (Linnaeus)\] and their effects on feeding of the tested

insects were studied. After Potter spraying treatment, the corrected mortality rate

caused by the 2 insecticides in all treatments increased as time flew away. But the leaf

protection rate decreased especially in the treatments with avermectin at lower

concentrations. After leaf-dipping treatment, both corrected mortality rate and leaf

protection rate in all treatments increased as time went along. In 72 h treatment with

avermectin, the corrected mortality rate was significantly lower than leaf protection

rate, except in those treatments with the concentration of 10.00 mg/L or 0.31 mg/L, the

two rates were similar. However, in the treatments with fipronil, the former was

significantly higher than the later in all treatments, except those with the

concentration of 12.50 mg/L, the two rates were also similar. The significance of leaf

protection rate in toxicity assessment of insecticides was discussed.

Key words: diamondback moth \[Plutella xylostella (Linnaeus)\], fipronil, avermectin, leaf protection rate, corrected mortality rate

中图分类号:

S481+.1

顾晓军,田素芬,刘文静. 应用叶片保护率与校正死亡率评价阿维菌素与氟虫腈
对小菜蛾3龄幼虫的毒力[J]. , 2009, 11(2): 98-105.

GU Xiao-jun, TIAN Su-fen, LIU Wen-jing. Indoor Toxicity Assessment of Avermectin and Fipronil on 3rd Instar
Larvae of Diamondback Moth by Means of Leaf Protection
Rates and Corrected Mortality Rate[J]. , 2009, 11(2): 98-105.