24%氰霜·嘧菌酯SC对马铃薯黑痣病的防效  

Control efficacy of cyazofamid·azoxystrobin 24%SC against potato black scurf

作　　者：李乾 艾玉廷 刘萌晓 邢天赐 贾立君 张崇[1] LI Qian;AI Yuting;LIU Mengxiao;XING Tianci;JIA Lijun;ZHANG Chong(College of Plant Protection,Shenyang Agricultural University,Shenyang 110866,China;Zhejiang Isk&Taurus Chemical Co.,Ltd.,Hangzhou 310020,China;Benxi Potato Research Institute,Benxi 117000,Liaoning,China)

机构地区：[1]沈阳农业大学植物保护学院,沈阳110866 [2]浙江石原金牛化工有限公司,杭州310020 [3]本溪市马铃薯研究所,辽宁本溪117000

出　　处：《农药》2024年第5期382-385,390,共5页Agrochemicals

基　　金：辽宁省科学研究经费项目(LSNQN202014)。

摘　　要：[目的]为丰富有效防治马铃薯黑痣病的化学药剂种类。[方法]菌丝生长速率法、温室盆栽和病圃试验以及大田试验研究了复配药剂24%氰霜·嘧菌酯SC对马铃薯黑痣病菌的室内生物活性和田间防效。[结果]24%氰霜·嘧菌酯SC的EC50值为0.33 mg/L,低于32.5%苯甲·嘧菌酯SC与24%噻呋酰胺SC。在3种不同药剂对病害防效试验中,相较对照药剂,制剂用量为150 mL/hm^(2)的24%氰霜·嘧菌酯SC对马铃薯茎基部和块茎黑痣病的防效均为最佳,大田防效为71.15%,与24%噻呋酰胺SC防效相当。[结论]24%氰霜·嘧菌酯SC沟施对马铃薯黑痣病有较好的防治效果,推荐使用剂量150~230 mL/hm^(2)。[Aims]The aim of this study is to find more fungicides for effective control of potato black scurf.[Methods]The laboratory activity and field efficacy of cyazofamid·azoxystrobin 24%SC was determined by mycelial growth rate method,pot test,disease nursery experiments and field trials.[Results]The EC50 value of cyazofamid·azoxystrobin 24%SC was 0.33 mg/L,which was lower than that of difenoconazole·azoxystrobin 32.5%SC and thifluzamide 24%SC.Among the trials of the three different fungicides,treatment of 150 mL/ha of cyazofamid·azoxystrobin 24%SC showed the best efficacy against potato stem base and tuber black scurf,with a field control effect rate reaching up to 71.15%.[Conclusions]Ditch application of cyazofamid·azoxystrobin 24%SC demonstrated excellent control against potato black scurf,with a recommended dosage ranging from 150 to 230 mL/ha.

关 键 词：马铃薯黑痣病 24%氰霜·嘧菌酯SC 生物活性 防效 

分 类 号：S482.2[农业科学—农药学]