苯醚菌酯与戊唑醇混剂对小麦赤霉病菌的联合毒力及田间防效  

Co-toxicity and Field Control Efficacy of Mixtures of Bemystrobin and Tebuconazole to Fusarium head blight Caused by Gibberella zeae(Schw.)Petch

作　　者：陈宏州[1] 王兵兵 张新建 杨红福[1] 徐超 缪康[1] 张建华[1] 朱凤 CHEN Hongzhou;WANG Bingbing;ZHANG Xinjian;YANG Hongfu;XU Chao;MIAO Kang;ZHANG Jianhua;ZHU Feng(Zhenjiang Institute of Agricultural Sciences in Hilly Area of Jiangsu Province,Jurong,Jiangsu 212400;Zhenjiang Runliang Grain Professional Cooperative,Dantu,Jiangsu 212100;Yangzhou Suling Pesticide Chemical Co.,Ltd,Yangzhou Jiangsu 225231;Plant Protection and Quarantine Station of Jiangsu Province,Nanjing 210036)

机构地区：[1]江苏丘陵地区镇江农业科学研究所,江苏句容212400 [2]镇江润良粮食专业合作社,江苏丹徒212100 [3]扬州市苏灵农药化工有限公司,江苏扬州225231 [4]江苏省植物保护植物检疫站,南京210036

出　　处：《中国农学通报》2023年第30期132-137,共6页Chinese Agricultural Science Bulletin

基　　金：镇江市“1+1+N”新型农业技术推广项目“小麦病虫草害减药增效防控技术集成与推广”(ZJNJ[2021]05);镇江市重点研发计划“小麦DON毒素控制关键技术研发与应用”(SH2020008)。

摘　　要：为探明苯醚菌酯与戊唑醇混剂对小麦赤霉病菌的联合毒力及对赤霉病、小麦籽粒DON毒素和白粉病的田间防效,开发防治赤霉病的新药剂,采用菌丝生长速率法分别检测了苯醚菌酯、戊唑醇及其11种配比混剂对赤霉病菌的毒力,并进行了最佳配比制剂的田间药效试验。结果表明,苯醚菌酯与戊唑醇配比为1:9时增效系数为2.0804,增效作用最显著。田间药效试验中,37%苯醚菌酯∙戊唑醇SC 450 g/hm^(2)对赤霉病病指防效和DON防效分别为92.86%和89.49%,2次药后21 d对白粉病病指防效为85.84%,均高于常规药剂多菌灵和戊唑醇,并且对小麦生长安全。37%苯醚菌酯∙戊唑醇SC对赤霉病和籽粒DON毒素防效优良,同时对白粉病兼治效果良好,可开发为赤霉病防治药剂。In order to exploit a new reagent for controlling fusarium head blight(FHB),the co-toxicity of mixtures of bemystrobin and tebuconazole to Gibberella zeae(Schw.)Petch and the field control efficacy of mixtures of bemystrobin and tebuconazole to FHB and DON in wheat grain and wheat powdery mildew(WPM)had been measured,respectively.The indoor toxicity of bemystrobin,tebuconazole and their eleven mixtures on G.zeae(Schw.)Petch had been detected by using mycelium growth rate method,and the field control tests of the optimum formulation had been conducted.The results of indoor toxicity tests showed that the mixture of bemystrobin and tebuconazole at the ratio of 1:9 with the synergistic coefficients of 2.0804 could provide most significant synergistic effect.The results of the field control efficacy showed that the FHB disease index(DI)and DON control efficacy of 37%bemystrobin·tebuconazole SC 450 g/hm^(2) were 92.86%and 89.49%,respectively,while the control efficacy against WPM DI on the 21th day after 2 times of spraying were 85.84%,both of which were higher than the control efficacy of the common fungicide carbendazim or tebuconazole,and it was safe for wheat growth.37%bemystrobin·tebuconazole SC provided excellent control efficacy on FHB and DON in wheat grain,and provided good simultaneous control efficacy on WPM,which can be developed as a FHB control agent.

关 键 词：小麦赤霉病 脱氧雪腐镰刀菌烯醇 苯醚菌酯 戊唑醇 联合毒力 防治效果 

分 类 号：S435.121[农业科学—农业昆虫与害虫防治]