联苯肼酯对智利小植绥螨的安全性及二者对二斑叶螨的联合控制作用
Toxicity of the acaricide bifenazate to the predatory mite Phytoseiulus persimilis (Acari: Phytoseiidae) and the feasibility of using bifenazate in conjunction with P. persimilis to control the two-spotted spider mite Tetranychus urticae (Acari: Tetranychidae)
宫亚军** 金桂华 崔宝秀 王泽华 朱 亮 康总江 魏书军***
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DOI：10.7679/j.issn.2095-1353.2015.177
作者单位：北京市农林科学院植物保护环境保护研究所，北京 100097
中文关键词：智利小植绥螨，联苯肼酯，二斑叶螨，生物防治，联合控制
英文关键词：Phytoseiulus persimilis, bifenazate, Tetranychus urticae, biological control, combined control
中文摘要：
【目的】 评价联苯肼酯对智利小植绥螨Phytoseiulus persimilis的安全性，以及该药剂与捕食性天敌智利小植绥螨联合使用的效果。【方法】 采用室内生物测定与田间试验的方法测定了联苯肼酯对智利小植绥螨成螨和若螨致死率与繁殖能力的影响，以及二者联合使用对茄子上二斑叶螨的控制效果。【结果】 结果表明143 mg/L联苯肼酯对智利小植绥螨成螨和若螨的存活和生殖能力均无显著影响，处理后96 h对若螨的最高致死率为2.30%，成螨为2.04%；处理组8 d的平均产卵量为15.08粒/雌，与对照平均产卵量15.45粒/雌无显著差异；处理组所产卵的平均孵化率为98.63%，与对照组平均孵化率98.13%无显著差异；联苯肼酯悬浮剂在143 mg/L浓度下对二斑叶螨的控制效果表现为速效性高于单独使用智利小植绥螨，但持效性低于智利小植绥螨，防效在第22天时开始下降。二者联合使用表现出较好的速效性与持效性，处理后第2天防效达97.35%，第18天时达100%。【结论】 联苯肼酯对智利小植绥螨具有极高的安全性，该药剂与智利小植绥螨联合使用对二斑叶螨具有良好的控制效果。
英文摘要：
[Objectives] To assess the toxicity of the acaricide
bifenazate on the predatory mite Phytoseiulus
persimilis (Acari: Phytoseiidae), and evaluate the feasibility of using
this acaricide in conjunction with P.
persimilis to control the two-spotted spider mite Tetranychus urticae (Acari: Tetranychidae). [Methods] The effect of
bifenazate on the fecundity and mortality of adults and nymphs of P. persimilis, and the efficacy of a combination of P. persimilis and bifenazate in controlling T. urticae were tested in the laboratory. [Results] At a concentration
of 143 mg/L, bifenazate had no effect on the mortality and fecundity of P. persimilis.
Adult and nymph mortality were 2.30% and 2.04% respectively after 96 h. The
treatment group had an average fecundity of 15.08 eggs per female, which was
not significantly different to that of the control group (15.45 eggs per
female). The average hatchability of the treatment group was 98.63%, which was
also not significantly different to that of the control group (98.13%). A
combination of bifenazate and P.
persimilis resulted in fast and persistent control of T. urticae, with a control efficacy of 97.35% after 2 d and 100% after
18 d. [Conclusion] Bifenazate does not affect P. persimilis but is effective against T. urticae. The combined use of
bifenazate and P. persimilis is
effective in controlling T. urticae.