摘要
为明确小麦赤霉病菌对多菌灵抗性及对多种作用机制杀菌剂的敏感性,采用菌丝生长速率法测定了山东8个禾谷镰孢菌菌株对多菌灵的敏感性及21种杀菌剂对禾谷镰孢菌的毒力。结果表明:8个菌株对多菌灵尚未产生明显抗药性;戊唑醇、苯醚甲环唑、己唑醇、氟环唑、咪鲜胺锰盐、噻菌灵、多菌灵、吡唑醚菌酯、水杨菌胺、氰烯菌酯对禾谷镰孢菌有极高的室内生物活性,其EC_(50)及EC_(90)分别为0.031~0.855mg·L^(-1)、1.409~117.405mg·L^(-1);福美双、代森锰锌、代森联、三唑酮、甲基硫菌灵对禾谷镰孢菌有很高的室内生物活性,其EC_(50)及EC_(90)分别为5.232~13.063mg·L^(-1)、144.006~791.072mg·L^(-1);异菌脲、井冈霉素对禾谷镰孢菌有一定的室内生物活性,其EC_(50)分别为44.9和146.8mg·L^(-1);噁霉灵、醚菌酯、噻呋酰胺、吡噻菌胺对禾谷镰孢菌的室内生物活性极差,不宜用于对小麦赤霉病的防治。
In order to find out Fusarium graminearum＇s resistance to carbendazim and sensitivity to other fungicides,hyphal growth rate method was adopted to examine the eight strains of Fusarium graminearumstrains respond to carbendazim and the toxicity of 21 kinds of fungicides influence Fusarium graminearum.The results showed that eight strains no develop a significant resistance to carbendazim.tebuconazole,difenoconazole,hexaconazole,epoxiconazole,prochloraz manganese salt,thiabendazole,carbendazim,pyraclostrobin,trichlamide,phenamacril with the EC50 of 0.031-0.855mg·L^-1 and EC90 of 1.409-117.405mg·L^-1 had a remarkably high indoor bioactivity to Fusarium graminearum,while thiram,dithane,metiram,triadimefon,thiophanate-methyl with the EC50 of 5.232-13.063mg·L^-1 and the EC90 of 144.006-791.072mg·L^-1 have a very high indoor bioactivity to Fusarium graminearum.Iprodione,validamycinwith the EC50 of 44.878mg·L^-1 and 146.8mg·L^-1 have some indoor bioactivity to Fusarium graminearum,while hymexazol,kresoxim-methyl,thifluzamide,penthiopyrad had a negative indoor bioactivity to Fusarium graminearum,they shouldn＇t be used for the prevention and control of wheat scab.
出处
《黑龙江农业科学》
2017年第7期30-34,共5页
Heilongjiang Agricultural Sciences
基金
泰安市科技发展计划资助项目(20132046)
