浙江农业科学 ›› 2026, Vol. 67 ›› Issue (5): 1290-1296.DOI: 10.16178/j.issn.0528-9017.20250512

• 植保技术 • 上一篇    下一篇

生物农药对鲜食玉米草地贪夜蛾的防治效果

蒋凯()   

  1. 东阳市良种推广中心,浙江 东阳 322100
  • 收稿日期:2025-07-16 出版日期:2026-05-11 发布日期:2026-05-12
  • 作者简介:蒋凯,主要从事农业技术推广工作。E-mail:jk03@163.com

Control effects of biological pesticides on Spodoptera frugiperda in fresh maize

JIANG Kai()   

  1. Dongyang Municipal Improved Variety Promotion Center,Dongyang 322100,Zhejiang
  • Received:2025-07-16 Online:2026-05-11 Published:2026-05-12

摘要:

为研究生物农药对浙江省秋季鲜食玉米上草地贪夜蛾的防治效果,以浙糯玉18和红甜糯18为研究对象,选用苏云金芽孢杆菌G033A、甘蓝夜蛾核型多角体病毒、金龟子绿僵菌CQMa421、球孢白僵菌4种市售生物农药,以及绿僵菌-芽孢杆菌1种在研生物农药,开展生物农药单独施用、生物农药联合施用和生物农药与化学农药联合施用对草地贪夜蛾防治效果的田间试验。结果表明,生物农药单独施用后7 d,防治效果最优的是甘蓝夜蛾核型多角体病毒(防治效果72.51%~81.90%),而苏云金芽孢杆菌G033A、金龟子绿僵菌CQMa421、球孢白僵菌和绿僵菌-芽孢杆菌的防治效果较差。在生物农药半量联合施用时,苏云金芽孢杆菌G033A对甘蓝夜蛾核型多角体病毒有增效作用。5种生物农药分别与溴虫氟苯双酰胺半量联合施用时均有较好的防治效果,联合施用可减少50%的化学农药用量。本研究为应用生物农药和减量化学农药防治鲜食玉米草地贪夜蛾提供了技术支持。

关键词: 鲜食玉米, 草地贪夜蛾, 生物农药, 化学农药, 联合施用

Abstract:

To study the control effect of biological pesticides on Spodoptera frugiperda on fresh maize in autumn in Zhejiang Province,using Zhenuoyu 18 and Hongtiannuo 18 as test materials,field experiments were carried out using four commercially available biological pesticides,namely Bt G033A,Mamestra brassicae nucleo polyhedrosis virus(MbNPV),Metarhizium anisopliae CQMa421,Beauveria bassiana,and one biological pesticide under development,Metarhizium anisopliae-Bacillus. The experiments included the application of biological pesticides alone,the combined application of biological pesticides,and the combined application of biological pesticides and chemical pesticides. The results showed that among the biological pesticides applied alone,MbNPV had the best control effect on 7 days after application(72.51%-81.90%),while the control effects of Bt G033A,Metarhizium anisopliae CQMa421,Beauveria bassiana,and Metarhizium anisopliae-Bacillus were relatively poor. When two biological pesticides were combined at half dose,Bt G033A showed a synergistic effect on MbNPV. When each of the five biological pesticides was combined with a half dose of broflanilide,all demonstrated good control efficacy,and the combined application reduced the amount of chemical pesticide by 50%. This study provides technical support for the control of Spodoptera frugiperda on fresh maize using biological pesticides and reduced chemical pesticide application.

Key words: fresh maize, Spodoptera frugiperda, biological pesticide, chemical pesticide, combined application

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