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农学学报 ›› 2021, Vol. 11 ›› Issue (8): 27-31.doi: 10.11923/j.issn.2095-4050.cjas2020-0166

• 植物保护 • 上一篇    下一篇

25 g/L多杀霉素悬浮剂和1%甲氨基阿维菌素微乳剂对甘蓝小菜蛾的防治效果试验

张绪萍()   

  1. 山东省莒南县农业技术推广中心,山东莒南 276600
  • 收稿日期:2020-08-11 修回日期:2020-11-16 出版日期:2021-08-20 发布日期:2021-08-26
  • 作者简介:张绪萍,女,1980年出生,山东莒南人,农艺师,硕士,从事植物保护及农技推广工作。通信地址:276600 山东省莒南县农业技术推广中心,E-mail: 21390611@qq.com

25 g/L Spinosad Suspension and 1% Emamectin Benzoate Microemulsion: Control Efficacy on Plutella xylostella in Cabbage

Zhang Xuping()   

  1. The Center of Agricultural Technology Extention of Junan County in Shandong Province, Junan 276600, Shandong, China
  • Received:2020-08-11 Revised:2020-11-16 Online:2021-08-20 Published:2021-08-26

摘要:

旨在明确不同剂量杀虫剂对甘蓝主要害虫小菜蛾的防治效果,从而选择最佳使用剂量。2019年在山东省莒南县以25 g/L多杀霉素悬浮剂和1%甲氨基阿维菌素微乳剂为试材,采用田间试验的方法测得防效数据。结果表明:25 g/L多杀霉素悬浮剂有效成分18.75~25 g/hm2、1%甲氨基阿维菌素微乳剂有效成分1.5~2.25 g/hm2,能够有效防治甘蓝小菜蛾,药后3天防效分别为87.74%、91.86%、76.87%、83.46%,药后7天防效分别为90.68%、95.40%、85.79%、90.58%。其中供试药剂二高剂量均显著高于低剂量。药后7天,25 g/L多杀霉素悬浮剂25 g/hm2防效最高,达95.40%,多杀霉素防效略高于甲氨基阿维菌素。供试药剂可作为防治甘蓝小菜蛾的安全高效理想药剂,药后7天防效均达85%以上,建议二者交替使用防止产生抗药性。

关键词: 杀虫剂, 剂量, 25 g/L多杀霉素悬浮剂, 1%甲氨基阿维菌素微乳剂, 甘蓝, 小菜蛾, 防治效果

Abstract:

The aim of the study is to identify the control efficacies of different dosages of pesticides on diamondback moth (Plutella xylostella) in cabbage and to select the optimum dosage. A field trial was conducted with 25 g/L spinosad suspension and 1% emamectin benzoate microemulsion in Junan County, Shandong Province in 2019. The results showed that the Plutella xylostella was controlled effectively by 25 g/L spinosad suspension with 18.75-25 g/hm2 and 1% emamectin benzoate microemulsion with 1.5-2.25 g/hm2. The control efficacy was 87.74%, 91.86%, 76.87% and 83.46% respectively after three days of application and was 90.68%, 95.40%, 85.79% and 90.58% respectively after seven days of application. For 1% emamectin benzoate microemulsion, the control efficacy of higher dosage was better than that of lower dosage. 25 g/L spinosad suspension with 25g/hm2 had the best control efficacy, which could be up to 95.40% after seven days of application. The control efficacy of 25 g/L spinosad suspension was slightly better than that of 1% emamectin benzoate microemulsion after seven days of application. In conclusion, the two pesticides can be used as safe, effective and ideal pesticides, and their control efficacies were both above 85%. It is suggested that the two pesticides are used alternately in order to avoid resistance.

Key words: Pesticide, Dosage, 25 g/L Spinosad Suspension, 1% Emamectin Benzoate Microemulsion, Cabbage, Plutella xylostella, Control Efficacy

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