7种药剂对白菜黑斑病菌的毒力及增效配方筛选  

Toxicity Determination and Synergistic Mixtures Screening of Seven Fungicides on Alternaria brassicae

作　　者：王敏 宋雨萌 刘文杰 于雯雯 罗兰 WANG Min;SONG Yumeng;LIU Wenjie;YU Wenwen;LUO Lan(College of Plant Health and Medicine,Qingdao Agricultural University,Shandong Engineering Research Center for Environment-Friendly Agricultural Pest Management,Qingdao266109,China)

机构地区：[1]青岛农业大学植物医学学院,山东省植物病虫害绿色防控工程研究中心,青岛266109

出　　处：《现代农药》2023年第1期64-67,共4页MODERN AGROCHEMICALS

基　　金：国家重点研发计划(2018YFD0201206-06)。

摘　　要：为了有效防治白菜黑斑病,本研究采用生长速率法测定7种药剂及不同药剂的复配对白菜黑斑病菌的毒力及增效作用。试验结果表明,在7种供试药剂中95%氟环唑原药、98%吡唑醚菌酯原药和98%戊唑醇原药对白菜黑斑病菌的毒力较强,EC_(50)分别为0.37、0.60 mg/L和0.60 mg/L。95%氟环唑原药与98%戊唑醇原药以4∶1、1∶1和1∶4的质量浓度比复配时,EC_(50)分别为0.29、0.34 mg/L和0.35 mg/L,共毒系数分别为139.29、135.35和151.59,表现为增效作用,而95%氟环唑原药与98%吡唑醚菌酯原药以4∶1、1∶1和1∶4的质量浓度比复配时,EC_(50)分别为0.40、0.46 mg/L和0.53 mg/L,共毒系数分别为117.54、108.02和118.37,具有相加作用。该研究结果可为白菜黑斑病的化学防控提供科学用药指导。In order to effectively control Chinese cabbage black spot disease,the toxicity and synergism of seven fungicides and their mixtures to Chinese cabbage black spot caused by Alternaria brassicae were measured with mycelium growth rate method.The results showed that the toxicity of epoxiconazole 95%TC,pyraclostrobin 98%TC and tebuconazole 98%TC were higher,and the EC_(50)were 0.37,0.60 mg/L and 0.60 mg/L,respectively.The mixture of epoxiconazole 95%TC and tebuconazole 98%TC showed synergistic effect at the ratio of 4∶1,1∶1 and 1∶4,and the EC_(50)were 0.29,0.34 mg/L and 0.35 mg/L,and the co-toxicity coefficients were 139.29,135.35 and 151.59,respectively.The mixtures of epoxiconazole 95%TC and pyraclostrobin 98%TC had additive effect at the ratio of 4∶1,1∶1 and 1∶4,and the EC_(50)were 0.40,0.46 mg/L and 0.53 mg/L,the co-toxicity coefficients were 117.54,108.02 and 118.37,respectively.The results of this study could provide scientific guidance for the chemical control of A.brassicae.

关 键 词：白菜黑斑病菌 杀菌剂 毒力 复配 增效作用 

分 类 号：TQ450.2[化学工程—农药化工] TQ455