浙江农业科学 ›› 2024, Vol. 65 ›› Issue (5): 1203-1207.DOI: 10.16178/j.issn.0528-9017.20230750

• 植保技术 • 上一篇    下一篇

水稻恶苗病防治药剂筛选试验

沈足金1(), 沈跃军2, 姚张良3, 徐伟东3, 陆强3,*()   

  1. 1.嘉兴市农业科学研究院 桐乡农业科学研究所,浙江 桐乡 314500
    2.嘉兴市绿农农资有限公司,浙江 嘉兴 314006
    3.嘉兴市农业科学研究院,浙江 嘉兴 314016
  • 收稿日期:2023-05-23 出版日期:2024-05-11 发布日期:2024-05-23
  • 通讯作者: 陆强,高级农艺师,从事农作物病虫草害防治技术研究与推广工作,E-mail:jxluqiang@163.com
  • 作者简介:沈足金,农艺师,主要从事粮油工作,E-mail:shen_zj@163.com
  • 基金资助:
    桐乡市重点科技计划(202201068)

Screening test of pesticides for the prevention and control of rice bakanae disease

SHEN Zujin1(), SHEN Yuejun2, YAO Zhangliang3, XU Weidong3, LU Qiang3,*()   

  1. 1. Tongxiang Institute of Agricultural Science, Jiaxing Academy of Agricultural Science, Tongxiang 314500, Zhejiang
    2. Jiaxing Lvnong Agricultural Materials Co., Ltd., Jiaxing 314006, Zhejiang
    3. Jiaxing Academy of Agricultural Sciences, Jiaxing 314016, Zhejiang
  • Received:2023-05-23 Online:2024-05-11 Published:2024-05-23

摘要:

水稻恶苗病是重要的水稻病害。选择6种药剂进行了药剂筛选试验,并进行了新型药剂200 g·L-1氟唑菌酰羟胺悬浮剂的浸种试验,通过室内发芽率测定等试验评价25%咪鲜胺水乳剂和25%氰烯菌酯悬浮剂桶混的安全性。结果表明,25%咪鲜胺水乳剂和25%氰烯菌酯悬浮剂桶混浸种48 h对杂交稻芽和根的生长有抑制作用,但对出芽率无显著影响。药剂筛选试验发现,各处理2 a防治效果不稳定,但当前25%氰烯菌酯悬浮剂防治效果不佳,0.3%四霉素水剂的防治效果相对较好。200 g·L-1氟唑菌酰羟胺悬浮剂500~8 000倍均有较好的防治效果,显著优于对照药剂25%氰烯菌酯悬浮剂。200 g·L-1氟唑菌酰羟胺悬浮剂500和1 000倍各小区均未查到恶苗病病株。0.3%四霉素水剂和200 g·L-1氟唑菌酰羟胺悬浮剂可以用于防治水稻恶苗病。

关键词: 水稻恶苗病, 药剂筛选, 安全性评价

Abstract:

Rice bakanae disease is an important rice disease. Six agents were selected for the screening test, and the soaking test of 200 g·L-1 fluazole hydroxylamine suspension, the safety of 25% prochloraz aqueous emulsion and 25% cyanostrobin suspension was evaluated by indoor germination rate measurement and other tests. The results showed that the mixed soaking of 25% prochloraz aqueous emulsion and 25% cyanostrobin suspension in barrels for 48 h had an inhibitory effect on the growth of hybrid rice shoots and roots, but had no significant effect on the germination rate. The results of the screening test showed that the control effect of each treatment was unstable for 2 years, but the control effect of 25% cyanostrobin suspension was not good, and the control effect of 0.3% tetramycin aqueous solution was relatively good. 200 g·L-1 fluazole hydroxylamine suspension 500-8 000 times had a good control effect, which was significantly better than the control agent 25% cyanostrobin suspension. No disease was found in any of the plots after 500 and 1 000 times of 200 g·L-1 fluazole hydroxylamine suspension treatment. 0.3% tetramycin aqueous solution and 200 g·L-1 fluazole hydroxylamine suspension can be used for the prevention and control of rice bakanae disease.

Key words: rice bakanae disease, pesticide screening, safety evaluation

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