新型吡唑-3-甲酸酯类化合物HNNK-1对小麦全蚀病菌的毒力及防治效果  

Toxicity and control efficacy of a novel pyrazole-3-carboxylate compound HNNK-1 against Gaeumannomyces graminis var.tritici

作　　者：杨党伟[1] 郭梅燕 蒋水萍 马毅辉[1] YANG Dangwei;GUO Meiyan;JIANG Shuiping;MA Yihui(Institute of Plant Protection,Henan Academy of Agricultural Sciences,Henan Key Laboratory of Crop Pest Control,Key Laboratory of Integrated Pest Management on Crops in Southern Region of North China,Ministry of Agriculture and Rural Affairs,Zhengzhou 450002,China;Henan Xiangcheng Research Institute of Agricultural Sciences,Xiangcheng 466200,China)

机构地区：[1]河南省农业科学院植物保护研究所,河南省农作物病虫害防治重点实验室,农业农村部华北南部作物有害生物综合治理重点实验室,郑州450002 [2]河南省项城市农业科学研究所,项城466200

出　　处：《植物保护》2022年第4期358-362,共5页Plant Protection

基　　金：河南省农业科学院优秀青年科技基金(2016YQ16)。

摘　　要：为了研究新型吡唑-3-甲酸酯类化合物HNNK-1对小麦全蚀病的防治效果,采用菌丝生长速率法测定了其对小麦全蚀病菌的毒力;并通过拌种处理在温室和田间测定了其对小麦全蚀病的防治效果;同时观察了HNNK-1拌种对小麦生长的影响。菌丝生长速率法测定结果表明,HNNK-1对小麦全蚀病菌的EC_(50)为0.28 mg/L,低于硅噻菌胺的EC_(50)(0.58 mg/L);盆栽试验结果表明,用50 g/L HNNK-1 SC拌种(药种质量比1∶3000)后对小麦全蚀病的防效为60.10%;对小麦株高、根长等生长指标无显著影响。田间药效试验表明,用50 g/L HNNK-1 SC拌种(药种质量比1∶3000)对小麦全蚀病的防效为73.13%(开封)和71.15%(周口)。HNNK-1可以有效控制田间小麦全蚀病发生和危害。The aim of this study was to investigate the field control effect of a novel pyrazole-3-carboxylate compound HNNK-1 on take-all disease of wheat.The antifungal activity of HNNK-1 against Gaeumannomyces graminis var.tritici(Ggt)was examined in laboratory with mycelial growth rate method,and the control efficacy of HNNK-1 against wheat take-all disease and its safety to wheat seedling were also evaluated.The EC_(50) value of HNNK-1 in inhibiting the growth of Ggt was 0.28 mg/L,lower than that of silthiopham(0.58 mg/L).The control efficacy of seed dressing with HNNK-150 g/L SC(1∶3000)was 60.10%in pot experiment.Seed dressing with HNNK-150 g/L SC(1∶3000)had no obviously negative effect on the growth of wheat through measuring plant height and root length.The field efficacy of seed dressing with HNNK-150 g/L SC(1∶3000)was 73.13%in Kaifeng city and 71.15%in Zhoukou city,indicating HNNK-1 could provide effective control against wheat take-all disease.

关 键 词：吡唑-3-甲酸酯类化合物 HNNK-1 小麦全蚀病菌 毒力测定 防治效果 

分 类 号：S482.27[农业科学—农药学]