寡雄腐霉发酵液与化学农药联用对番茄晚疫病菌的防治作用  

Combined Effect of Fermentation Filtrate of Pythium oligandrum and Chemical Pesticide Against Tomato Phytophthora infestans

作　　者：赵建[1] 黄建国[1] 

机构地区：[1]西南大学资源环境学院,重庆400716

出　　处：《贵州农业科学》2011年第5期115-118,共4页Guizhou Agricultural Sciences

基　　金：化学杀菌剂对寡雄霉素药效的影响研究(2010051)

摘　　要：为筛选出高效安全的生物化学药剂,通过平板药效试验研究了9种常用化学农药与生防菌寡雄腐霉发酵液联合施用对番茄晚疫病的防治效果。结果表明,降低化学农药的常规施用浓度,并与寡雄腐霉发酵液联用能明显抑制番茄晚疫病菌,抑菌率可达70%;代森锰锌、百菌清和多菌灵农药与寡雄腐霉发酵液联用对寡雄腐霉菌的抑制作用较小,但能有效抑制番茄晚疫病菌,达到防治番茄晚疫病和降低农药残留的双重目的。The antibiosis of metabolites from Pythium oligandrum hyphenated with various chemical pesticides against Phytophthora infestans was studied by using inhibitory test on plate to provide theoretical basis for screening out safe biochemical reagent with high efficiency.The results showed that combined application of lower concentration of chemical pesticides and fermentation filtrate of Pythium oligandrum could evidently inhibit tomato Phytophthora infestans and the inhibition rate could be up to 70%.The inhibition effect of combined application of mancozeb,chlorothalonil or carbendazim with fermentation filtrate of Pythium oligandrum on Pythium oligandrum was very small,while effectively on tomato Phytophthora infestans,which reached double purpose of preventing and curing tomato Phytophthora infestans and reducing pesticide residues in the garden stuff.

关 键 词：番茄晚疫病菌 化学农药 寡雄腐霉 生化防治 

分 类 号：S436.412[农业科学—农业昆虫与害虫防治]