茶叶学报2025，Vol.66Issue(5)：13-20,8.DOI:10.20045/j.cnki.issn.2096-0220.2025.05.002
9种杀菌剂及其混配剂对茶饼病菌的抑制效果
Determination of the Inhibitory Activity of Fungicides against Exobasidium Vexans
摘要
Abstract
[Objective]Efficacies of fungicides in preventing and controlling the disease on tree plants caused by Exobasidium vexans were determined.[Method]In vitro antifungal activity of 4 chemical pesticides,5 biopesticides,and mixtures of them against E.vexans mycelial growth were tested.Treatments included the applications of 45 agents by pairing 5 of the pesticides in the mass ratios of 1:4,1:1,2:3,3:2,and 4:1 in 9 categories to evaluate the synergistic fungicidal effect.[Result]The application of 70％thiophanate-methyl wettable powder or 1％shenqinmycin suspension concentrate showed the lowest EC50 of 0.007 6 mg·L-1 and 0.294 1 mg·L-1,respectively,of the individual pesticides in inhibiting E.vexans growth.Of the 45 paired compounds,31 exhibited synergisms.The 1:4 combination of the mixture of 10 parts of water-soluble pine needle powder to one part of the microemulsion of 0.2％Psoralea corylifolia L.seed extract had the strongest synergistic interaction index of 427.673 0.There were 12 pairings exerted varying additive effects and two antagonistic on each other.[Conclusion]The most effective fungicides used singly for controlling E.vexans were 70％thiophanate-methyl wettable powder and 1％shenqinmycin suspension concentrate.The greatest synergism between the paired pesticides was found in a 1:4 ratio of the 10:1 water-soluble pine needle powder and the microemulsion of 0.2％Psoralea corylifolia L.seeds extract.关键词
茶饼病菌/杀菌剂/混配剂/增效作用Key words
Exobasidium vexans/fungicide/compound agent/synergistic action分类
农业科技引用本文复制引用
连娜娜,黄丽蕴,陈耀进,吴健华,邱瑞瑾,滕翠琴,王雨鑫,甘爽,易锦媚..9种杀菌剂及其混配剂对茶饼病菌的抑制效果[J].茶叶学报,2025,66(5):13-20,8.基金项目
梧州市科技计划项目(202202070) （202202070）
国家现代农业(茶叶)产业技术体系——广西茶叶创新团队梧州综合试验站(nycytxgxcxtd-2024-18-10). （茶叶）
