东南园艺2025，Vol.13Issue(1)：70-75,6.DOI:10.20023/j.cnki.2095-5774.2025.01.009
哈茨木霉与三唑类药剂防控山药炭疽病及增产效果研究
Study on the control of yam anthracnose by Trichoderma harzianum Rifai and triazole pesticides and their effects on yam yield
摘要
Abstract
[Objective]To determine the field control effect of Trichoderma harzianum Rifai against yam anthracnose in the early stage of yam growth,and to explore the feasibility of using triazole pesticides to simultaneously treat anthracnose and yam overgrowth in the middle and late stages of yam growth,providing references for high-yield management of yam.[Method]Selecting'Minghuai 7'yam as the experimental material,the disease index,aboveground biomass,and underground yield of yam were determined by single factor treatment with different concentrations of Trichoderma harzianum Rifai and application of different types of triazole pesticides.[Result]In the concentration screening experiment of Trichoderma harzianum Rifai,when spraying concentration was 500 mg/L,the disease index of yam anthracnose was 6.68,and the control efficiency reached 75.42%.The yield of yam per 667 m2 was 1988.78 kg,which was significantly different from the control.Five types of triazole pesticides all have control efficacy on anthracnose in yam.The most suitable pesticide was 40%difenoconazole,with control efficacy of 53.70%.The ratio of aboveground to underground parts(T/R value)of yam was 0.30 and the yield of yam reaches 2154.24 kg per 667 m2,an increase of 19.53%compared to the control group.It could effectively prevent excessive growth of yam in the middle and later stages of growth.[Conclusion]Applying Trichoderma harzianum Rifai in the early stage of yam can effectively prevent and control yam anthracnose,and spraying 40%difenoconazole in the middle stage of yam growth can prevent yam overgrowth.Both measures are beneficial for increasing yam yield.关键词
山药/炭疽病/绿色防控/哈茨木霉/苯醚甲环唑/'明淮7号'Key words
yam/anthracnose/green prevention and control/Trichoderma harzianum Rifai/difenoconazole/'minghuai 7'分类
园艺学与植物营养学引用本文复制引用
黄哲鸿,陈仕朋,李清,詹梦琳,陈姝樽,邓才生,叶榕弟,华树妹..哈茨木霉与三唑类药剂防控山药炭疽病及增产效果研究[J].东南园艺,2025,13(1):70-75,6.基金项目
福建省星火项目(2022S0021) （2022S0021）
