杀菌剂对马铃薯黑痣病菌的室内毒力及田间防效  

Toxicity and field control efficacy of fungicides against potato black scurf

作　　者：吴志会[1] 陆晴[1] 甄志华 张尚卿[1] 彭学文[1] WU Zhihui;LU Qing;ZHEN Zhihua;ZHANG Shangqing;PENG Xuewen(Tangshan Academy of Agricultural Sciences,Tangshan 063000,Hebei,China;Crop Seed Station of Tangshan City,Tangshan 063000,Hebei,China)

机构地区：[1]唐山市农业科学研究院,河北唐山063000 [2]唐山市农作物种子站,河北唐山063000

出　　处：《中国瓜菜》2021年第6期68-72,共5页China Cucurbits And Vegetables

摘　　要：为解决生产中缺少防治马铃薯黑痣病的有效化学药剂问题,采用生长速率法测定了10种药剂对供试马铃薯黑痣病菌立枯丝核菌(Rhizoctonia solani Kühn)菌株的室内毒力,并选择活性较好的5种药剂进行田间防效试验。结果表明,50%咪鲜胺铜盐SC、20%吡噻菌胺SC、42.8%氟菌·肟菌脂SC、25 g·L^(-1)咯菌腈FS以及50%异菌脲WP毒力较强,EC50值分别为0.0762、0.6899、0.7221、0.9003和0.9251μg·mL^(-1);这5种药剂对马铃薯黑痣病也具有一定的防效,其中50%咪鲜胺铜盐SC和25 g·L^(-1)咯菌腈FS对马铃薯黑痣病的防效较好,对马铃薯植株和薯块黑痣病的防效均在78%以上。In order to solve the problem of lack of the effective fungicides to control the potato black scurf in production,that mycelial growth rate method was applied to determine the toxicity of the 10 kinds of fungicides on Rhizoctonia solani Kühn and 5 kinds of agents among them were selected for further field efficacy trials.The results indicated that the 50%prochloraz copper SC,20%Penthiopyrad SC,42.8%Fluopyram·Trifloxystrobin SC,25 g·L^(-1)Fludioxonil FS and 50%Iprodione WP showed higher toxicity on Rhizoctonia solani Kühn in laboratory,with the EC50 values of 0.0762,0.6899,0.7221,0.9003 and 0.9251μg·mL^(-1),respectively.The results of field trials showed that all of the 5 fungicides had certain control effect on the potato black scurf,among them 50%prochloraz copper SC,and 25 g·L^(-1)Fludioxonil FS had better control effect than the others,with a control efficacy on the black scurf of potato plants and potatos was above 78%.

关 键 词：马铃薯黑痣病 杀菌剂 毒力测定 田间防效 

分 类 号：S532[农业科学—作物学]