几种杀菌剂对辣椒疫病的抑菌活性研究  

Study on Antibacterial Activity of Several Fungicides on Phytophthora capsici Leon

作　　者：吴石平[1] 袁洁[1] 杨学辉[1] 陈小均[1] 何海永[1] 

机构地区：[1]贵州省农业科学院植物保护研究所,贵州贵阳550006

出　　处：《安徽农业科学》2009年第1期211-212,共2页Journal of Anhui Agricultural Sciences

基　　金：贵州省"十一五"科技攻关项目(黔科合NZ字(2005)3010)子课题;贵州省农业科学院重点项目(黔科合农字(2003)02)

摘　　要：[目的]筛选出对辣椒疫病防效较好的新型杀菌剂。[方法]采用室内抑菌效果测定和网室生测,对50%氟吗啉锰锌等12种杀菌剂的抑菌效果进行测定。[结果]68%精甲霜灵.代森锰锌水分散粒剂6、5%代森锰锌.二氰蒽醌可湿性粉剂、50%氟吗啉锰锌可湿性粉剂和687.5g/L氟吡菌胺.霜霉威盐酸盐悬浮剂等药剂对辣椒疫霉有较好的抑制作用,EC50分别为4.822 04、.814 00、.475 9和2.502 6 mg/L,250 g/L嘧菌酯悬浮剂和250 g/L吡唑醚菌酯乳油能使菌落变稀。在网室生测试验中,50%氟吗啉锰锌对辣椒疫霉的防效最好,2.0、2.4和2.8 g/L的防效分别为85.14%、89.39%和92.45%。[结论]50%氟吗啉锰锌对辣椒疫病有良好的防效,可用于辣椒疫病的防治。[Objective] The aim of the study was to seek some new fungicides.[Method] Antibacterial effect of 50% wettable powder of flumorph mancozeb etc.fungicides were determined using indoor antibacterial effect and net room bioassay. [Result ] The study showed that 68% water dispersible granule of metalaxy-M mancozeb,65% wettable powder of mancozeb dithianon,50% wettable powder of flumorph mancozeb and 687.5 g/L suspension concentration of fluopicolide propamocarb hydrochloride could control Phytophthora capsici Leonian effectively with EC50 of 4.822 0,4.814 0,0.475 9 and 2.502 6 mg/L respectively,250 g/L suspension concentration of azoxystrobin and 250 g/L emulsifiable concentrate of ovraclostrobin could attenuate colony and make hypha malformed.Antibacterial effect of 50% wettable powder of flumorph mancozeb on Phytophthora capsici Leonian was the best, antibacterial effect of 2.0,2.4 and 2.8 g/L were 85.14%,89.39% and 92.45% respectively.[Conclusion] 50% wettable powder of flumorph mancozeb might be applied to control Phytophthora capsici Leonian.

关 键 词：辣椒疫霉 杀菌剂 生物测定 

分 类 号：S436.418.19[农业科学—农业昆虫与害虫防治]