摘要： 测定表明,己唑醇、戊唑醇抑制小麦纹枯病菌菌丝生长的活性明显高于多菌灵、甲基硫菌灵、萎锈灵、嘧菌酯、咪鲜胺、啶菌恶唑、井冈霉素、甲基立枯磷、五氯硝基苯、恶霉灵、福美双、百菌清、丙森锌、代森锰锌;5%己唑醇微乳剂、12.5%戊唑醇水乳剂及25%阿米西达悬浮剂对麦苗上纹枯病菌的毒力高于50%多菌灵可湿粉、70%甲基硫菌灵可湿粉、5%井冈霉素可溶粉、40%达科宁悬浮剂、25%敌力脱乳油、40%氟硅唑乳油、10%世高水分散颗粒剂、20%甲基立枯磷乳剂、40%卫福悬浮种衣剂和50%福美双可湿粉;福美双与己唑醇混配抑制小麦纹枯病菌增效,1∶10为最佳配比,依此配成44%己唑醇.福美双可湿粉600~1 200倍稀释液喷雾土壤及浸种未抑制小麦生长及推迟小麦出苗。

关键词: 杀菌剂, 小麦纹枯病菌, 毒力, 增效作用, 安全性

Abstract: The test showed that the triazole fungicides hexaconazole and tebucolazole posessed much higher inhibitory activity against mycelial growth of Rhizoctonia cerealis than carbendazim,thiophanate-methyl,carboxin,azoxystrobin,prochloraz,SYP-Z048,validmycin,toclofos-methyl,quintozene,hymexazol,thiram,chlorothalonil,propineb,mancozeb; hexaconazole 5% ME,tebuconazole 12.5% ME,and Amistar 25% SC exhibited higher inhibitory activity againt R.cerealis infecting wheat seedings than carbendazim 50% WP,thiophate-methyl 70% WP,toclofos-methyl 20% EC,validmycin 5% SP,Vitavax 200FF,Daconil 40% SC,propiconazole 25% EC,flusilazole 40% EC,difenoconazole10% WP,and thiram 50% WP;Synergistic interaction exsited between thiram and hexaconazole,1∶10 is the optimal ratio of mixing.600-1 200-fold suspension of 44% hexaconazole-thiram WP prepared at the optimal ratio didn′t inhibit the growth of wheat and delay the emergence of wheat seedlings with wheat seeds soaked in suspension of 44% hexaconazole-thiram WP or with the surface of soil sprayed by suspension of 44% hexaconazole-thiram WP.

Key words: Fungicides, Rhizoctonia cerealis, Fungitoxicity, Synergistic interaction, Safety

中图分类号: 

• S435.12