浙江农业科学

浙江农业科学 ›› 2025, Vol. 66 ›› Issue (5): 1216-1220.DOI: 10.16178/j.issn.0528-9017.20250065

• 研究论文 • 上一篇    下一篇

不同药剂对小麦赤霉病的防治效果及减量用药前景

袁忠勤(), 顾国伟()   

  1. 余姚市农业技术推广服务总站,浙江 余姚 315400
  • 收稿日期:2025-02-07 出版日期:2025-05-11 发布日期:2025-05-20
  • 通讯作者: 顾国伟(1983—),男,浙江嘉兴人,高级农艺师,从事植保技术研究与推广工作,E-mail:ggw_1983@126.com。
  • 作者简介:袁忠勤(1986—),男,江西抚州人,农艺师,硕士,从事植物保护工作,E-mail:574914707@qq.com。

Control effect of different fungicides on wheat scab and prospect for reducing dosage

YUAN Zhongqin(), GU Guowei()   

  1. Yuyao Agricultural Technology Extension Service Station, Yuyao 315400, Zhejiang
  • Received:2025-02-07 Online:2025-05-11 Published:2025-05-20

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摘要： 近年来,小麦赤霉病菌对多菌灵、戊唑醇、丙硫菌唑等产生了抗药性,导致防治效果降低。因此,笔者开展了20%氟唑菌酰羟胺+25%丙环唑、40%丙硫·戊唑醇、30%肟菌·戊唑醇、48%苯甲·嘧菌酯、43%戊唑醇等6种不同药剂处理及用药次数对小麦赤霉病的田间药效对比试验,以期筛选适合防治小麦赤霉病的绿色高效对口药剂,并探究其减量用药的前景,为赤霉病防治用药提供指导。结果表明,20%氟唑菌酰羟胺900 mL·hm-2+25%丙环唑600 mL·hm-2、40%丙硫·戊唑醇900 mL·hm-2对小麦赤霉病均有较高的防治效果,且对小麦生长安全,药后15 d的病穗防治效果为81.2%~82.3%,病指防治效果为85.8%~86.4%,药后26 d的病穗防治效果为84.6%~85.5%,病指防治效果为86.1%~86.9%;均显著高于其他药剂处理,可在生产上大面积推广应用,相应地,20%氟唑菌酰羟胺+25%丙环唑方案下的用药次数可减少为1次,实现了减量用药的目的。

关键词: 小麦赤霉病, 杀菌剂, 防治效果, 减量用药

Abstract:

In recent years, due to the resistance of Fusarium graminearum to carbendazim, tebuconazole and prothionazole, the control effect has been reduced. Therefore, the author carried out a field efficacy comparison test on wheat scab with six different chemical treatments and spray times, including 20% pydiflumetofen+25% propiconazol, 40% prothioconazole tebuconazole, 30% trifloxystrobin tebuconazole, 48% difenoconazole azoxystrobin, 43% tebuconazole, to screen green and efficient fungicides for the control of wheat scab, and explore the prospect of reduced dosage, so as to provide guidance for the control of wheat scab. The results showed that 20% pydiflumetofen(900 mL ·hm-2)+25% propiconazol(600 mL·hm-2), 40% prothioconazole tebuconazole(900 mL ·hm-2) could better control the damage of wheat scab, and they were safe for wheat growth. The control effect of diseased ear and disease index after 15 days treatment was 84.6%-85.5% and 86.1%-86.9%respectively treatment the control effect of diseased ear and disease index after 26 days treatment was 81.2%-82.3% and 85.8%-86.4%respectively treatment, which were significantly higher than other treatments, and could be widely applied in production. Accordingly, the spray time under 20% pydiflumetofen+25% propiconazole can be reduced to once, and the purpose of dosage reduction is realized.

Key words: wheat scab, fungicides, control effect, reduced dosage

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