菌核净、代森锰锌及其混剂对烟草赤星病菌毒力测定  

Bioassay of Dimethachlon、Mancozeb and Their Mixtures to Alternaria alternate

作　　者：申荣艳[1] 刘学敏[2] 董长军 冯喜生 

机构地区：[1]中国科学院南京土壤研究所,江苏南京210008 [2]东北农业大学植物保护系,黑龙江哈尔滨150030 [3]哈尔滨烟叶公司,黑龙江哈尔滨150001

出　　处：《农药科学与管理》2004年第6期24-27,33,共5页Pesticide Science and Administration

摘　　要：运用Horsfall毒力试验设计方案和孢子萌发抑制法分别测定菌核净、代森锰锌及其混剂对烟草赤星病菌(Alternariaalteranta)的毒力,并分别用Wadley方法、Gowing方法、Abbott方法和孙云沛方法等多种评价方法评价所配混剂的增效作用,结果表明,当它们按EC50剂量7:3的比例混配时所得混剂表现明显的增效作用,4种增效作用评价方法所得结果一致,田间防治结果也证明该混剂可有效防治赤星病。Horsfall’s toxicity design and method of control spore germination were used for toxicity test of Dimethachlon、Mancozeb and their mixtures to Alternaria alternate.Four methods of Wadley、Gowing、Abbott and Sun Yunpei were used to estimate the synergistic interaction of fungicides in mixtures.The results showed that only the mixture(Dimethachlon’s EC50 and Mancozeb’s EC50)in 7∶3 had obvious synergistic interaction.Four estimating methods of synergistic interaction obtained consistent results.The field experiments also illustrated that the tobacco brown,leaf spot could be controlled effectively by application of the mixture.

关 键 词：烟草赤星病菌 菌核净 代森锰锌 毒力测定 

分 类 号：S481.9[农业科学—农药学]