嘧菌环胺和缬霉威复配对5种作物病原菌的室内联合毒力  

Laboratory Co-toxicity of Cyprodinil and Carbamic Acid Complex against Pathogenic Fungi on Five Kinds of Crops

作　　者：刘润强[1] 曹前辉 王清峻 陈锡岭[1] 

机构地区：[1]河南科技学院资源与环境学院,河南新乡453003 [2]河南省辉县农业局,河南辉县453600 [3]河南淇林园林科技有限公司,河南郑州450045

出　　处：《河南农业科学》2016年第10期93-97,共5页Journal of Henan Agricultural Sciences

基　　金：河南科技学院高层次人才引进启动项目(103010615001);河南省博士后基金项目(159831)

摘　　要：采用室内菌丝生长速率法,以草莓枯萎病菌、西瓜炭疽病菌、烟草猝倒病菌、葡萄霜霉病菌和月季灰霉病菌为作用目标,研究嘧菌环胺和缬霉威混配对5种病菌的联合毒力,为嘧菌环胺和缬霉威混配使用提供科学依据。结果显示,嘧菌环胺对5种病菌的有效中质量浓度（EC50）为0.19-1.92 mg/L,缬霉威对5种病菌的EC50为0.23-1.02 mg/L;当嘧菌环胺和缬霉威的混配比例为15∶1时,对草莓枯萎病菌的共毒系数最大,为217.70;混配比例为8∶1时,对西瓜炭疽病菌的共毒系数最大,为203.59;混配比例为3∶1时,对烟草猝倒病菌的共毒系数最大,为196.29;混配比例为1∶6时,对葡萄霜霉病菌的共毒系数最大,为201.98;混配比例为9∶1时,对月季灰霉病菌的共毒系数最大,为202.56。表明嘧菌环胺和缬霉威按适当比例混配对5种病原菌具有明显的增效作用。The synergistic activity of cyprodinil and carbamic acid complex against Fusarium oxysporum f. sp. Fragariae,Colletotrichum orbiculare（ Berk. Ment.） Arx,Plasmopara viticola（ Berk. et Curtis）Berl. et de Toni,Pythium aphanidermatum（ Edson） Fitzpatrick and Botrytis cinerea Pers,the pathogenic fungi on 5 kinds of crops,strawberry,watermelon,grape,tobacco,and rose,respectively,was studied based on the mycelial growth method in the laboratory. The bioassay results showed that the EC50 values of cyprodinil against 5 fungi ranged from 0. 19 mg / L to 1. 92 mg / L,and the EC50 values of carbamic acid against 5 fungi ranged from 0. 23 mg / L to 1. 02 mg / L. When the ratio of cyprodinil and carbamic acid was 15∶ 1,the co-toxicity cofficient（ CTC） against mycelial growth of Fusarium oxysporum f. sp. Fragariae was maximum（ 217. 70）; When the ratio of the mixture was 8 ∶ 1,the CTC against mycelial growth of Colletotrichum orbiculare（ Berk. Ment.） Arx was maximum（ 203. 59）; When the ratio of the mixture was 3∶ 1,the CTC against mycelial growth of Pythium aphanidermatum（ Edson） Fitzpatrick was maximum（ 196. 29）; When the ratio of the mixture was 1∶ 6,the CTC against mycelial growth of Plasmopara viticola（ Berk. et Curtis） Berl. et de Toni was maximum（ 201. 98）; When the ratio of the mixture was 9∶ 1,the CTC against mycelial growth of Botrytis cinerea Pers was maximum（ 202. 56）. The results suggested that cyprodinil and carbamic acid had significant synergistic activity against 5 different fungi when combined by appropriate ratio.

关 键 词：嘧菌环胺 缬霉威 草莓枯萎病菌 西瓜炭疽病菌 烟草猝倒病菌 葡萄霜霉病菌 月季灰霉病菌 增效作用 

分 类 号：S481.3[农业科学—农药学]