延边烟草猝倒病病原菌鉴定及药剂防治  

Pathogen Identification and Medicament Control of Tobacco Damping-off in Yanbian

作　　者：高崇 赵伟 孙立娟 安承荣 李荣生 张大志 吴国贺 GAO Chong;ZHAO Wei;SUN Li-juan;AN Cheng-rong;LI Rong-sheng;ZHANG Da-zhi;WU Guo-he(Tobacco Institute,Yanbian Academy of Agricultural Sciences,Longjing 133400,China;Changchun Branch,Jilin Tobacco Corporation Company,Changchun 130000,China;Yanbian Branch,Jilin Tobacco Corporation Company,Yanji 136200,China)

机构地区：[1]延边州农业科学院烟草研究所,吉林龙井133400 [2]吉林省烟草公司长春市公司,吉林长春130000 [3]吉林省烟草公司延边州公司,吉林延吉136200

出　　处：《黑龙江农业科学》2022年第7期61-65,共5页Heilongjiang Agricultural Sciences

基　　金：中国烟草总公司吉林省公司项目“吉林省烟草有害生物调查研究”(〔2010〕83号)。

摘　　要：为明确延边地区烟草猝倒病病原菌种类并开展科学的药剂防控,依据培养性状及形态特征对病原菌进行鉴定,采用菌丝生长速率法测定15种杀菌剂对病原菌的毒力,并开展25%嘧菌酯SC防效试验。结果表明,引起延边烟草猝倒病的病原菌为瓜果腐霉菌(Pythium aphanidermatum);25%嘧菌酯SC毒力最高,EC_(50)≤0.01 mg·L^(-1),其1000倍液平均防效达84.00%,与对照药剂处理差异显著。因此,25%嘧菌酯SC可以作为烟草猝倒病的防治药剂或轮换药剂。In order to clarified the species of pathogens causing tobacco damping-off in Yanbian and carried out scientific pesticide prevention and control,identification of pathogens by cultivation properties and morphological characteristics identification was carried,and toxicity of 15 fungicides to pathogen were determined by mycelium growth rate method,with controlled effect experiment of 25%azoxystrobin SC.The results showed that pathogen causing tobacco damping-off disease in Yanbian was Pythium aphanidermatum,25%azoxystrobin SC had the highest toxicity,EC_(50)≤0.01 mg·L^(-1),the average control effect of its 1000-fold solution reached 84.00%,which was significantly different from that of the control treatment.Therefore,25%azoxystrobin SC can be used as a control agent or a rotation agent for tobacco damping-off.

关 键 词：延边 烟草猝倒病 瓜果腐霉菌 病原鉴定 

分 类 号：S43[农业科学—农业昆虫与害虫防治]