15种杀菌剂对黑龙江省水稻褐变穗病菌的室内毒力测定  

Determination of Inhibition Effect of 15 Kinds of Fungicides on Alternaria alternate

作　　者：常浩[1] 韩雨桐 牟明[1] 李云鹏[1] 张俊华[1] 

机构地区：[1]东北农业大学农学院,黑龙江哈尔滨150030

出　　处：《黑龙江农业科学》2016年第10期61-64,共4页Heilongjiang Agricultural Sciences

基　　金：哈尔滨市应用技术研究与开发资助项目(2014AB6BN036);高等学校创新能力提升计划("2011计划")资助项目;中央引导地方科技发展专项(建立"两减一空"精简化栽培操作流程)资助项目

摘　　要：为筛选出低毒高效的杀菌剂来防治水稻褐变穗,采用菌丝生长速率法测定了15种杀菌剂对黑龙江省水稻褐变穗病原菌的抑制作用。筛选出了5种杀菌剂对水稻褐变穗病菌具有明显的抑制作用。结果表明:吡唑醚菌酯、肟菌·戊唑醇、咪鲜胺主要抑制病菌菌丝的生长,其EC50分别为0.047 5、0.145 3、0.884 1μg·mL-1;吡唑醚菌酯、乙蒜素、多抗霉素对病原菌分生孢子萌发具有较高的抑制作用,其EC50分别为0.000 2、0.000 5、0.041 2μg·mL-1。吡唑醚菌酯既能抑制水稻褐变穗病菌菌丝的生长,又能抑制分生孢子的萌发。In order to screen out the fungicide with low toxicity and high efficient to prevent rice brown panicle disease, taking 15 fungicides as materials,and their inhibition to A. alternata were deverminated by mycelium growth rate method. Five fungicides which have the inhibitory effect on A. alternata were selected. Pyraclostrobin,oxime-tebuconazole and prochloraz had the obviously inhibitory effect on the mycelial growth of A. alternata,their EC50 were 0. 047 5,0. 145 3 and 0. 884 1μg·mL-1 , respectively. Pyraclostrobin, ethylicin and Polyoxin had the higher inhibitory effect on the spore germination of A. alternata effectively, their EC50 were 0. 000 2,0. 000 5,0.04I 2 μg·mL-1, respectively. Pyraclostrobin had inhibitory effect on the myeelial growth and spore germination of A. alternata.

关 键 词：水稻褐变穗 杀菌剂 生长速率法 室内毒力测定 

分 类 号：S435.111.4[农业科学—农业昆虫与害虫防治]