浙江农业科学

浙江农业科学 ›› 2025, Vol. 66 ›› Issue (11): 2708-2711.DOI: 10.16178/j.issn.0528-9017.20240405

• 植保技术 • 上一篇    下一篇

西瓜叶斑病的发生症状及其防控技术研究

江于良1(), 武军2, 王汉荣2,*()   

  1. 1 杭州良益农业开发有限公司, 浙江 杭州 310021
    2 浙江省农业科学院 植物保护与微生物研究所, 浙江 杭州 310021
  • 收稿日期:2024-05-20 出版日期:2025-11-11 发布日期:2025-12-01
  • 通讯作者: 王汉荣(1966—),男,浙江杭州人,研究员,主要从经济作物病害诊断及绿色防控技术研发,E-mail:ZJNKYJJBH@hotmail.com。
  • 作者简介:江于良,男,E-mail:hzly11@126.com。

Study on the occurrence symptoms and control techniques of watermelon leaf spot disease

JIANG Yuliang1(), WU Jun2, WANG Hanrong2,*()   

  1. 1 Hangzhou Liangyi Agricultural Development Co., Ltd., Hangzhou 310021, Zhejiang
    2 Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, Zhejiang
  • Received:2024-05-20 Online:2025-11-11 Published:2025-12-01

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摘要：

本研究对西瓜叶斑病的田间发生症状进行了调查,对其致病病原菌进行分离、鉴定,并通过田间药效试验进一步评价了10%苯醚甲环唑水分散粒剂、500 g·L-1异菌脲悬浮剂、250 g·L-1嘧菌酯悬浮剂、250 g·L-1吡唑醚菌酯乳油、25%咪鲜胺·多菌灵可湿性粉剂对西瓜叶斑病的田间防治效果。结果表明,西瓜叶斑病的致病病原菌为瓜类尾孢(Cercospora citrullina)。田间药效试验结果表明,500 g·L-1异菌脲悬浮剂、10%苯醚甲环唑水分散粒剂和25%咪鲜胺·多菌灵可湿性粉剂能够有效控制西瓜叶斑病,其防治效果分别为85.4%、82.0%和76.4%,且在使用过程中具有较高的安全性,为西瓜叶斑病的田间防治提供了一定的参考。

关键词: 西瓜, 叶斑病, 发生症状, 化学防控

Abstract:

This study investigated the field occurrence symptoms of watermelon leaf spot disease, isolated and identified its pathogenic fungus, and further evaluated the field control efficacy of 10% difenoconazole water dispersible granules, 500 g·L-1 iprodione suspension, 250 g·L-1 azoxystrobin suspension, 250 g·L-1 pyraclostrobin emulsifiable concentrate and 25% prochloraz·carbendazim wettable powder through field efficacy trials. The results showed that the pathogenic fungus of watermelon leaf spot disease was Cercospora citrullina. And the field efficacy trials result showed that 500 g·L-1 iprodione suspension, 10% difenoconazole water dispersible granules, and 25% prochloraz·carbendazim wettable powder could effectively controll watermelon leaf spot disease, with control efficacy of 85.4%, 82.0%, and 76.4%, respectively. These fungicides were also safe to watermelon, providing valuable reference for the field control of watermelon leaf spot disease.

Key words: watermelon, leaf spot disease, occurrence symptoms, chemical control

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