马铃薯早疫病菌室内杀菌剂筛选及配比试验  

Laboratory screening and proportioning tests on fungicides against the potato early blight caused by Alternaria solani

作　　者：梁伟伶[1] 台莲梅[1] 靳学慧[1] 左豫虎[1] 王海鹏[2] 孙明洋[3] 

机构地区：[1]黑龙江八一农垦大学农学院,大庆163319 [2]黑龙江八一农垦大学生命科技学院,大庆163319 [3]吉林大学植物科学学院,长春130062

出　　处：《植物保护》2009年第4期168-171,共4页Plant Protection

基　　金：黑龙江省农垦总局科技项目(200G622)

摘　　要：采用生长速率法,对18种杀菌剂及药剂配比进行室内毒力测定,结果表明,杀菌剂苯醚甲环唑、嘧菌酯、腐霉利和异菌脲对马铃薯早疫病菌抑制效果好,有效中浓度(EC50)小于1μg/mL;代森锰锌与嘧菌酯混配,配比为4∶6、5∶5、6∶4、7∶3、8∶2、9∶1均有增效作用,其中配比9∶1增效作用最好,其次是配比6∶4。The mycelial linear growth rate method was used to determine the toxicity of 18 fungicides to Alternaria solani causing the potato early Blight and their proportions in the laboratory. The results showed that the median effective concentration （EC50） of difenoconazole, azoxystrobin, procymidone and iprodione were less than 1μg/mL, and the inhibitive effects of the above-mentioned fungicides were stronger than the other fungicides. Mixing azoxys- trobin and mancozeb at volume ratios of 4： 6, 5 ： 5, 6 ： 4, 7： 3, 8 ： 2 and 9 ： 1 obviously exhibited synergistic effects. The best proportioning was 9 ： 1, followed by 6 ：4.

关 键 词：马铃薯 早疫病菌 杀菌剂 生长速率法 混配 

分 类 号：S482.2[农业科学—农药学]