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中国农学通报

中国农学通报 ›› 2023, Vol. 39 ›› Issue (7): 111-115.doi: 10.11924/j.issn.1000-6850.casb2022-0160

• 植物保护·农药 • 上一篇    下一篇

四唑虫酰胺对草地贪夜蛾的毒力评价及田间防效

池艳艳(), 林少源, 陈炳旭, 徐淑()   

  1. 广东省农业科学院植物保护研究所/农业农村部华南果蔬绿色防控重点实验室/广东省植物保护新技术重点实验室，广州 510640
  • 收稿日期:2022-03-09 修回日期:2022-07-14 出版日期:2023-03-05 发布日期:2023-03-15
  • 通讯作者: 徐淑，女，1984年出生，江苏南通人，副研究员，硕士，研究方向：植物保护。通信地址：510640 广东省广州市天河区五山街道金颖路7号 广东农科院植物保护研究所，Tel：020-87590733，E-mail：xushugcz@163.com。
  • 作者简介:

    池艳艳，女，1989年出生，山东聊城人，助理研究员，硕士，研究方向：农药学。通信地址：510640 广东省广州市天河区五山街道金颖路7号 广东农科院植物保护研究所，Tel：020-87590733，E-mail：。

  • 基金资助:
    广东省农业农村厅项目“绿色发展共性关键技术创新团队建设项目”(2021KJ112)

Toxicity and Field Efficacy of Tetraniliprole Against Spodoptera frugiperda

CHI Yanyan(), LIN Shaoyuan, CHEN Bingxu, XU Shu()   

  1. Institute of Plant Protection, Guangdong Academy of Agricultural Sciences/ Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China, Ministry of Agriculture and Rural Affairs/ Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Guangzhou 510640
  • Received:2022-03-09 Revised:2022-07-14 Online:2023-03-05 Published:2023-03-15

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摘要：

为明确四唑虫酰胺防治草地贪夜蛾(Spodoptera frugiperda)的可行性和合适剂量，分别采用浸卵法和浸叶法测定200 g/L四唑虫酰胺悬浮剂对草地贪夜蛾卵和2龄幼虫的室内毒力，并开展田间防效试验。室内毒力结果显示，200 g/L四唑虫酰胺悬浮剂对草地贪夜蛾卵、2龄幼虫的LC50分别为187.423、0.023 mg/L，表明其对草地贪夜蛾卵的毒力较差，但对2龄幼虫的毒力较高，远高于200 g/L氯虫苯甲酰胺悬浮剂。2年田间试验中，200 g/L四唑虫酰胺悬浮剂有效成分用量15~45 g/hm2处理在药后1天的防效为43.26%~59.37%，药后7天的防效高达80.28%~91.94%，45 g/hm2处理药后10天的防效仍维持在80%以上。200 g/L四唑虫酰胺悬浮剂对草地贪夜蛾2龄幼虫具有较好的室内毒力，且其田间防效与200 g/L氯虫苯甲酰胺悬浮剂和5%甲氨基阿维菌素苯甲酸盐微乳剂相当，可作为防治草地贪夜蛾的潜在药剂。

关键词: 四唑虫酰胺, 草地贪夜蛾, 卵, 幼虫, 毒力, 田间防效

Abstract:

To determine the feasibility and appropriate dosage of tetraniliprole for the control of Spodoptera frugiperda, egg immersion and leaf dipping methods were performed to explore the toxicity of 200 g/L tetraniliprole SC to eggs and 2nd instar larvae of S. frugiperda, and the control efficacy test was carried out in field. The laboratory toxicity showed that the LC50 of 200 g/L tetraniliprole SC to the eggs and the 2nd instar larvae was 187.423 and 0.023 mg/L, respectively, indicating its poor toxicity to the eggs and much higher toxicity to the 2nd instar larvae than that of 200 g/L chlorantraniliprole SC. In the two-year field experiment, the control efficacy of 200 g/L tetraniliprole SC was 43.26%-59.37% with ingredient dosage of 15-45 g/hm2 at 1 day after treatment (DAT), and the control efficacy increased to 80.28%-91.94% after 7 DAT. Moreover, the control efficacy of 45 g/hm2 treatment was still above 80% at 10 DAT. The 200 g/L tetraniliprole SC had good indoor toxicity to the 2nd instar larvae of S. frugiperda, its field control efficacy was similar to that of 200 g/L chlorantraniliprole SC and 5% emamectin enzoate ME, and it could be used as a potential agent for the control of S. frugiperda.

Key words: tetraniliprole, Spodoptera frugiperda, egg, larvae, toxicity, field efficacy