5种杀菌剂对蚕豆赤斑病菌的室内毒力测定及田间防效  

In Vivo Activity and Field Control Effects of Five Fungicides against Botrytis fabae on Vicia faba

作　　者：张建荣[1] 杨富位 马生彪 吕昭龙 杨晓明[4] 刘小娟 李继平[2,3] 郑果 王立[2] 惠娜娜 ZHANG Jianrong;YANG Fuwei;MA Shengbiao;L Zhaolong;YANG Xiaoming;LIU Xiaojuan;LI Jiping;ZHENG Guo;WANG Li;HUI Nana(Jingning County Agricultural Technology Extension Center,Jingning Gansu 743400,China;Institute of Plant Protection,Gansu Academy of Agricultural Sciences,Lanzhou 730070,China;College of Plant Protection,Gansu Agricultural University,Lanzhou 730070,China;Crop Research Institute,Gansu Academy of Agricultural Sciences,Lanzhou 730070,China;Plant Protection and Inspection Station of Dingxi City,Dingxi Gansu 743000,China)

机构地区：[1]静宁县农业技术推广中心,甘肃静宁743400 [2]甘肃省农业科学院植物保护研究所,兰州730070 [3]甘肃农业大学植物保护学院,兰州730070 [4]甘肃省农业科学院作物研究所,兰州730070 [5]定西市植保植检站,甘肃定西743000

出　　处：《西北农业学报》2023年第6期935-941,共7页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：甘肃省科技计划(20CX9NL200);现代农业食用豆产业技术体系(CARS-08-G14);定西市科技计划(DX2021BZ09)。

摘　　要：为了筛选防治蚕豆赤斑病的高效药剂,选用25%吡唑醚菌酯悬浮剂、225 g/L异菌脲悬浮剂、40%嘧菌环胺悬浮剂、400 g/L嘧霉胺悬浮剂、43%腐霉利悬浮剂等5种杀菌剂,对蚕豆赤斑病病原菌进行室内毒力测定和田间药效试验。结果表明:5种药剂对蚕豆赤斑病菌均有较好的抑制作用,其中225 g/L异菌脲悬浮剂的抑菌作用最强,EC_(50)为0.1721μg/mL;其次为25%吡唑醚菌酯悬浮剂,EC_(50)为2.5340μg/mL。田间药效试验结果表明,在推荐剂量下,5种杀菌剂对蚕豆赤斑病均有良好的防治效果,其中25%吡唑醚菌酯悬浮剂2000倍液防治效果最佳,为79.03%,显著高于其他药剂。产量分析显示,25%吡唑醚菌酯悬浮剂2000倍液小区平均产量为15.8 kg,百粒质量为179.0 g,增产率为5.60%,显著高于其他杀菌剂。综合分析,25%吡唑醚菌酯悬浮剂对蚕豆赤斑病的防效最高,并有显著的保产效果,可作为防治蚕豆赤斑病的首选药剂。In order to identify high-efficiency fungicides against Botrytis fabae on Vicia faba,laboratory virulence test and field efficacy test were conducted using 25%pyraclostrobin SC,225 g/L isobacteriuria SC,40%cyprodinil SC,400 g/L pyrimethamine SC,and 43%procymidone SC.Results from the laboratory tests showed that all the five fungicides effectively exhibited B.fabae,with the strongest inhibitory effect observed from 225 g/L isomylurea SC(EC_(50) of 0.1721μg/mL),followed by 25%pyridoxylate SC(EC_(50) of 2.5340μg/mL).The field efficacy test showed that all the five fungicides demonstrated good control effect on Botrytis fabae on Vicia faba at recommended doses.The 25%pyraclostrobin SC 2000 times liquid had the highest control effect(79.03%),significantly higher than other fungicides.The yield analysis showed that the plot average yield of the 25%pyraclostrobin SC 2000 times liquid was 15.8 kg,with a 100 grain weight of 179.0 g,and the yield increase rate of 5.60%,significantly higher than that of other fungicides.After comprehensive analysis,25%pyraclostrobin SC was recommend as the first choice for controlling broad bean red spot disease due to its high control effect and significant yield protection.

关 键 词：蚕豆 蚕豆赤斑病 室内毒力 防治效果 

分 类 号：S436.43[农业科学—农业昆虫与害虫防治]