保护地草莓白粉病防治药剂筛选  

Screening of agents for prevention and control of Sphaerotheca macularis in greenhouse

作　　者：刘士峰 任争光[1] 寇弘儒 王合 张志勇[1] LIU Shifeng;REN Zhengguang;KOU Hongru;WANG He;ZHANG Zhiyong(Beijng Key Laboratoiy of New Technology in Agricultural Application,Plant Science and Technology College,Beijing University of Agriculture,Beijing 102206,China;Beijing Forestry Protection Station,Beijing 100029,China)

机构地区：[1]农业应用新技术北京市重点实验室,北京农学院植物科学技术学院,北京102206 [2]北京市林业保护站,北京100029

出　　处：《北京农学院学报》2019年第4期72-76,共5页Journal of Beijing University of Agriculture

基　　金：北京市林保站项目（农药减量技术研究）

摘　　要：【目的】为了筛选出对棚室栽培的草莓白粉病具有良好防治效果的药剂,【方法】选用4%四氟醚唑水乳剂、42.4%唑醚·氟酰胺悬浮剂、6%寡糖·链蛋白可湿性粉剂、25%乙嘧酚可湿性粉剂、70%甲基硫菌灵可湿性粉剂、80%多菌灵可湿性粉剂进行田间药剂筛选试验,按照推荐剂量使用农药,连续喷药2次,间隔期7d,在喷药后3、5和7d后分别对草莓叶片和果实进行了防效测定。【结果】通过对草莓白粉病病叶的防效调查,结果表明,四氟醚唑和唑醚·氟酰胺对草莓白粉病防效较好,在施药2次后第7天时防效分别为77.29%和82.78%;通过对草莓白粉病病果防效调查表明,四氟醚唑、唑醚·氟酰胺和阿泰灵防效好于乙嘧酚、甲基硫菌灵和多菌灵。【结论】四氟醚唑和唑醚·氟酰胺对草莓白粉病防效较好,可用于北京地区棚室栽培草莓白粉病的防治;乙嘧酚、甲基硫菌灵和多菌灵对草莓白粉病防效较差,不宜用于北京地区棚室栽培草莓白粉病的防治。【Objective】In order to screen out the agent with good control effect on strawberry powdery mildew in the greenhouse,【Methods】tetraconazole 4%water emulsion,fluxapyroxad-pyraclostrobin 42.4%suspension concentrate,atailing 6%wettable powder,ethirimol 25%wettable powder,thiophanate-methyl 70%wettable powder and carbendazim 80%wettable powder were used for screening test.The pesticides were sprayed twice at recommended doses with an interval of 7 d.The disease index of strawberry powdery mildew on leaves and fruits were investigated separated after 3,5 and 7 dafter spraying.【Results】Through the investigation of the control effect on diseased leaves,the results showed that tetraconazole and fluxapyroxad-pyraclostrobin had good control efficiency on strawberry powdery mildew,under the conditions of the 7 th day after the second spraying,the effects of tetraconazole and fluxapyroxad-pyraclostrobin on the control of strawberry powdery mildew were 77.29%and 82.78%,respectively.According to the investigation of disease control effect of diseased fruits,tetraconazole,fluxapyroxad-pyraclostrobin and atailing were better than ethirimol,thiophanate-methyl and carbendazim.【Conclusion】Tetraconazole and fluxapyroxad-pyraclostrobin had better control efficiency on strawberry powdery mildew,and can be used for the prevention and treatment of strawberry powdery mildew in the greenhouse in Beijing.Ethirimol,thiophanate-methyl and carbendazim had poor control efficiency on strawberry powdery mildew,and were not recommended for the control of strawberry powdery mildew in the greenhouse in Beijing.

关 键 词：草莓白粉病 防治效果 病情指数 

分 类 号：S436.63[农业科学—农业昆虫与害虫防治]