几种新烟碱类杀虫剂对梨木虱的毒力及田间防效
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S436.612.2+9

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山西省重点研发计划重点项目(201903D211001-2);山西省农业科学院特色攻关项目(YGG17049)


Toxicity and Field Efficacy of Different Neonicotinoid Insecticides against Pear Psylla
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    摘要:

    为明确几种新烟碱类药剂对梨木虱的杀虫活性及防治效果,用浸渍法测定7种新烟碱类杀虫剂对梨木虱若虫的毒力,采用喷雾法对其田间防治效果进行验证。结果表明:啶虫脒、烯啶虫胺毒力较高,LC50分别为16.4064 mg/L、17.0297mg/L。呋虫胺、吡虫啉、噻虫胺和噻虫嗪的毒力依次降低,噻虫啉毒力最低,其LC50为215.4731 mg/L;噻虫嗪、烯啶虫胺和啶虫脒可有效控制梨木虱,且速效性好、持效期长,其中噻虫嗪防效最好,调查期防效均在95%以上,噻虫胺和吡虫啉防效一般,呋虫胺和噻虫啉防效相对较差。在梨木虱综合治理中,根据梨木虱发生动态,可优先选择并轮换使用噻虫嗪、烯啶虫胺和啶虫脒,以提高防效并延缓抗药性的产生。

    Abstract:

    In order to make clear the toxicity and control effects of different neonicotinoid insecticides on Pear psylla, the toxicities of seven insecticides on nymphs of Pear psylla were determined by dipping method in laboratory, field control effects were determined using spray method in pear orchards. The results of laboratory toxicity experiments showed that the toxicity of Acetamiprid and Nitenpyram was higher with LC50 of 16.4064 mg/L and 17.0297 mg/L, respectively. Thiacloprid had the lowest toxicity, and its LC50 was 215.4731 mg/L, the others were ranked from larger to smaller as Dinotefuran, Imidacloprid, Clothianidin and Thiamethoxam. The field experiment results showed that the control effects of Thiamethoxam, Nitenpyram and Acetamiprid could effectively control the harm of Pear psylla, and they were performed rapid effect in killing Pear psylla and had a lasting validity period.Thiamethoxam had the best control effect, which was above 95% in the investigation period, Clothianidin and Imidacloprid had the medium control effects against Pear psylla. However, control effects of Dinotefuran and Thiacloprid were relatively poor. In the Integrated Management of Pear psylla, Thiamethoxam, Nitenpyram and Acetamiprid should be preference and used alternately to improve the control effect and delay the development of resistance according to the occurrence dynamic of Pear psyllid.

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魏明峰,张战备.几种新烟碱类杀虫剂对梨木虱的毒力及田间防效[J].东北农业科学,2022,47(6):76-79.

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  • 收稿日期:2020-04-17
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  • 在线发布日期: 2024-11-09
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