摘要
采用菌丝生长速率法测定眯鲜胺等8种杀菌剂对苹果斑点落叶病病原菌的抑菌效果。室内测定结果表明:45%眯鲜胺微乳剂、25%眯鲜胺乳油和12.5%斑退可湿性粉剂3种药剂的抑菌效果较好,抑制率均达90%以上,显著优于50%退菌特可湿性粉剂等其他5种药剂,50%多菌灵可湿性粉剂的抑菌效果最低,为58.5%。毒力测定结果表明:抑制率较高的3种药剂毒力也较强,25%眯鲜胺乳油、12.5%斑退可湿性粉剂和45%眯鲜胺微乳剂的EC50值分别为1.640 6,1.809 8 mg/L和1.908 8 mg/L,3种药剂中,供试病原菌对25%眯鲜胺乳油和45%眯鲜胺微乳剂的敏感性相对较高,毒力曲线斜率分别为18.059 2和14.104 9,建议昆明地区防治苹果斑点落叶病时首选眯鲜胺为有效成分的农药制剂。
Inhibition effect of Prochloraz EC and other seven fungicides against the pathogenic fungus, Alternaria mali, which is known to be the pathogen of apple alternaria leaf spots, were assessed by mycelial growth rate method. The indoor measurement results showed that the inhibition rate of three fungicides was all over 90% , including 45% Prochloraz EC, 25% Prochloraz EC and 12% Bantui WP, which was specifically higher than that of 50% tuzet wettable powder and other four fungicides. The inhibition effect of carbendazol wettable powder was 58.5% , which was the lowest among the eight fungicides experimented.
出处
《西南林学院学报》
2009年第5期51-53,58,共4页
Journal of Southwest Forestry College
基金
云南省高校森林灾害预警与控制重点实验室建设项目资助(500902)
云南省省级重点学科森林保护学建设项目(500971)资助
