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
李乾 1艾玉廷 2刘萌晓 1邢天赐 1贾立君 3张崇1
作者信息
- 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
- 折叠
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/hm2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/hm2.
Abstract
[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Key words
potato black scurf/cyazofamid·azoxystrobin 24％SC/bioactivity/control efficacy引用本文复制引用
基金项目
辽宁省科学研究经费项目(LSNQN202014)
出版年
2024
NETL
NSTL
万方数据