浙江农业科学 ›› 2026, Vol. 67 ›› Issue (2): 455-462.DOI: 10.16178/j.issn.0528-9017.20250483

• 植保技术 • 上一篇    下一篇

防治柑橘褐斑病的杀菌剂筛选

练健俊1(), 徐胡彬2, 程瑛2, 张君媚1, 陈旭根3, 吴琦琦1, 邓良东1, 焦晨2, 李红叶2()   

  1. 1.庆元县农业农村局,浙江 丽水 323800
    2.浙江大学 生物技术研究所,浙江 杭州 310058
    3.庆元丰之蜜家庭农场,浙江 丽水 323800
  • 收稿日期:2025-07-07 出版日期:2026-02-28 发布日期:2026-03-07
  • 通讯作者: 李红叶
  • 作者简介:李红叶,E-mail:hyli@zju.edu.cn
    练健俊,研究方向为植物保护和水果生产。E-mail:385191076@qq.com
  • 基金资助:
    现代农业(柑橘)产业技术体系专项经费(CARS-26)

Screening of fungicides for control of citrus brown spot caused by Alternaria spp.

LIAN Jianjun1(), XU Hubin2, CHENG Ying2, ZHANG Junmei1, CHEN Xugen3, WU Qiqi1, DENG Liangdong1, JIAO Chen2, LI Hongye2()   

  1. 1.Qingyuan County Bureau of Agriculture and Rural Affairs,Lishui 323800,Zhejiang
    2.Institute of Biotechnology,Zhejiang University,Hangzhou 310058,Zhejiang
    3.Qingyuan Fengzhimi Family Farm,Lishui 323800,Zhejiang
  • Received:2025-07-07 Online:2026-02-28 Published:2026-03-07
  • Contact: LI Hongye

摘要:

柑橘链格孢褐斑病(Alternaria brown spot,ABS)简称柑橘褐斑病,是我国部分橘类和杂交柑橘上新发生的一种重要真菌病害,其病菌可侵染感病柑橘的所有幼嫩组织,果实全生育期均可发病,在利于发病年份,常导致敏感品种大量落叶、落果和枯梢甚至绝收。然而,迄今尚未有杀菌剂被登记用于该病害的防治。本研究评价了不同杀菌剂单剂、复配剂及杀菌剂组合对2种褐斑病菌菌丝生长的抑制活性、田间防治效果及清园处理效果。结果表明,咯菌腈单剂、氟唑胺·氯氟醚、氟唑菌酰羟胺·咯菌腈、氟酰羟·苯甲唑和嘧环·咯菌腈在有效成分1 μg·mL-1 时对菌丝生长的抑制率均超过90%;田间药效试验结果表明,氟酰羟·苯甲唑对褐斑病的防治效果较好,且氟唑菌酰羟胺与咯菌腈、代森锰锌混合处理下的防治效果均较好,能够有效降低病梢率和减少落叶数;此外,波尔多液和石硫合剂清园处理可以较好地控制褐斑病,大大降低病梢率。本试验结果为柑橘褐斑病的防治药剂选择提供了数据支持和理论指导。

关键词: 柑橘褐斑病, 杀菌剂, 离体抑菌效果, 果园防治效果

Abstract:

Alternaria brown spot (ABS),commonly referred to as citrus brown spot,is an emerging and important fungal disease affecting some mandarins and their hybrids in China. The pathogens can infect all young tissues of susceptible citrus varieties,and their fruit can be infected throughout the entire growth period. This disease often causes massive defoliation,fruit drop,shoot blight,and even causes fruitless on susceptible cultivars if the weather conditions are extremely favorable for the outbreak of this disease. However,to date,no fungicide has been registered for the control of this disease in China. In this study,we evaluated the inhibitory activity on the mycelial growth of two varieties of brown spot disease fungi,field control effect and orchard cleanup treatments effect of different single agents,compound agents of fungicides and fungicide combinations. The results showed that at an active ingredient concentration of 1 μg·mL-1,the inhibition rates of fludioxonil (single agent),fluxapyroxad-cyflufenamid,pydiflumetofen-fludioxonil,pydiflumetofen-difenoconazole,and azoxystrobin-fludioxonil on mycelial growth all exceeded 90%. Field efficacy trials indicated that pydiflumetofen-difenoconazole exhibited better control effect against ABS,and the control effects of the mixed treatment of pydiflumetofen and fludioxonil,pydiflumetofen and mancozeb were all good,which can effectively reduce the rate of diseased shoots and the number of fallen leaves. In addition,orchard cleanup treatments with Bordeaux mixture and lime sulfur could effectively control ABS and significantly reduce the incidence of diseased shoots. The findings of this study provide data support and theoretical guidance for the selection of fungicides for the management of citrus brown spot.

Key words: citrus brown spot, fungicide, in vitro antifungal effect, orchard control effect

中图分类号: