6种杀菌剂对马铃薯晚疫和辣椒枯萎病菌的室内毒力测定  

Indoor Toxicity Measurement of Six Fungicides on Phytophthora infestans from Potatoes and pepper Fusarium oxysporum

作　　者：尹娟[1] 胡德禹[1] 贺鸣[1] 施利[1] 杨霞[1] 

机构地区：[1]贵州大学精细化工研究开发中心,贵州贵阳550025

出　　处：《贵州大学学报（自然科学版）》2013年第5期16-18,共3页Journal of Guizhou University:Natural Sciences

基　　金：病毒及菌害调控的候选药物及分子靶标;国家973计划项目(2010CB126105)

摘　　要：为筛选出有效防治马铃薯晚疫病和辣椒枯萎病的药剂,采用菌丝生长速率法,测定了6种杀菌剂对马铃薯晚疫病菌和辣椒枯萎病菌的抑菌作用。6种杀菌剂中,25%咪鲜胺EC对2种病原菌的毒力最强,EC50值分别为0.032 mg/L和0.089 mg/L;氟环唑和己唑醇次之;12.5%腈菌唑EC和粉唑醇抑制效果较好;50%甲基硫菌灵WP的毒力最差。25%咪鲜胺EC,氟环唑和己唑醇均可有效抑制2种病原菌的生长,可进一步用于田间试验。In order to select fungicides that can effectively bacteriostasis of six fungicides on Phytophthora infestans control Potato Late Bright and Pepper Fusarium wilt , from Potatoes and Pepper Fusarium oxysporum was measured using mycelium growth rate method. The toxicity of prochloraz 25% EC was the most effective one to the pathogen with the EC50 of 0. 032 mg/L and 0. 089 mg/L respectively. Epoxiconazole and hexaconazole were lesser. Myclobutanil 12.5% EC and flutriafol also had well control effect to the pathogen . While thiophanate - methyl 50% WP was lower than others. Prochloraz 25% EC, epoxiconazole and hexaconazole could effectively inhibit the growth of Phytophthora infestans from Potatoes and Pepper Fusarium oxysporum and could be used in field trials.

关 键 词：杀菌剂 晚疫病 枯萎病 室内毒力测定 

分 类 号：S482.2[农业科学—农药学]