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当前位置: 首页 > 文章 > 联苯肼酯与毒死蜱对二斑叶螨联合毒力 农药 2014 (7) 75-77
Position: Home > Articles > Co-toxicity of Bifenazate and Chlorpyrifos to the Two-spotted Spider Mite(Tetranychus urticae Koch) Agrochemicals 2014 (7) 75-77

联苯肼酯与毒死蜱对二斑叶螨联合毒力

作  者：
宫亚军;王泽华;朱亮;石宝才;康总江;魏书军
单  位：
北京市农林科学院植物保护环境保护研究所
关键词：
二斑叶螨;联苯肼酯;毒死蜱;混配;共毒系数
摘  要：
[目的]寻找控制二斑叶螨的药剂,延缓对联苯肼酯抗性的产生。[方法]采用玻片浸渍法研究了联苯肼酯与毒死蜱对二斑叶螨的联合毒力。[结果]联苯肼酯的毒力明显高于毒死蜱,24、48、72 h的LC50值分别为10.927 7、5.154 3、3.389 4 mg/L,毒死蜱LC50值分别为433.295 3、206.798 5、69.094 4 mg/L。两药剂混用时,在1∶1~1∶80混配范围内具有增效作用,以1∶1比例混配增效作用最明显;随着毒死蜱用药量的提高,共毒系数呈现下降趋势。[结论]联苯肼酯与毒死蜱混用对二斑叶螨具有明显的增效作用。
译  名：
Co-toxicity of Bifenazate and Chlorpyrifos to the Two-spotted Spider Mite(Tetranychus urticae Koch)
作  者：
GONG Ya-jun;WANG Ze-hua;ZHU Liang;SHI Bao-cai;KANG Zong-jiang;WEI Shu-jun;Institute of Plant and Environmental Protection, Beijing Academy of Agriculture and Forestry Sciences;
关键词：
Tetranychus urticae;;bifenazate;;chlorpyrifos;;mixed;;co-toxicity coeffi cient
摘  要：
[Aims] This study aims to find effective acaricides to the two-spotted spider mite Tetranychus urticae. [Methods] Co-toxicity of the bifenazate and chlorpyrifos was tested using slide-dip method. [Results] The results showed that the bifenazate had higher toxicity to two-spotted mite than chlorpyrifos. The LC50 values of the bifenazate at 24, 48 and 72 hours after treatment were 10.927 7, 5.154 3 and 3.389 4 mg/L, respectively, while those of chlorpyrifos were 433.295 3, 206.798 5 and 69.094 4 mg/L, respectively. When the bifenazate and chlorpyrifos were mixed, they showed an addition of toxicity with a mixing ratio of 1∶1 to 1∶80(bifenazate∶chlorpyrifos). The highest co-toxicity coefficient was present at the ratio of 1∶1, the co-toxicity coefficient decreased with the increasing of the propertion of chlorpyrifos. [Conclusions] There is synergism of toxicity between bifenazate and chlorpyrifos on the two-spotted spider mite.

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