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4%嘧菌酯?噻呋酰胺展膜油剂对辽宁地区水稻纹枯病的防治效果

2021-03-18曲继林陈昶陈睿马超纪明山徐军

安徽农业科学 2021年4期

曲继林 陈昶 陈睿 马超 纪明山 徐军

摘要 为验证4%嘧菌酯·噻呋酰胺展膜油剂对水稻纹枯病的田间防治效果,分别在辽宁省盘锦市胡家镇、辽阳市佟二堡镇、营口市石佛镇、东港市黄土坎镇各选取2块地进行田间药效试验,比较不同施药时期和次数、剂量、剂型和成分处理间的防治效果。结果表明,当4%嘧菌酯·噻呋酰胺展膜油剂有效用药量为125 g/hm2,用药次数为1次时,对水稻纹枯病的防效高于25%噻呋酰胺·嘧菌酯悬浮剂,相較井冈霉素、噻呋酰胺单剂和嘧菌酯单剂防效分别高16.8%~20.0%、12.2%~17.7%、14.2%~17.3%,且展膜油剂处理产量高出其他处理3.6%~19.0%。嘧菌酯和噻呋酰胺复配具有协同增效作用,4%嘧菌酯·噻呋酰胺展膜油剂相比其他剂型或单剂具有防效好、持效期长、节工省时、治防兼备等优点。

关键词 噻呋酰胺;嘧菌酯;展膜油剂;防效;水稻纹枯病

中图分类号 S435.111  文献标识码 A

文章编号 0517-6611(2021)04-0136-05

doi:10.3969/j.issn.0517-6611.2021.04.038

Efficacy of Azoxystrobin-Thifluzamide 4% SO against Rice Sheath Blight in Liaoning Area

QU Ji-lin1,2,CHEN Chang1,3,CHEN Rui1 et al (1.Hebei Zhongbao Green Agricultural Crop Technology Co.,Ltd.,Beijing 100193;2.College of Plant Protection,Shenyang Agricultural University,Shenyang,Liaoning 110866;3.Institute of Plant Protection,CAAS,Beijing 100193)

Abstract To verify the field control effect of azoxystrobin-thifluzamide 4% SO on rice sheath blight,field efficacy tests were conducted in two plots of Hujia Town (Panjin City),Tongerbao Town (Liaoyang City),Shifo Town (Yingkou City) and Huangtukan Town (Donggang City) respectively,to compare the control effects of different application periods,times,doses and formulations.When the dose of azoxystrobin-thifluzamide 4% SO was 125 g/hm2 and was used once during the growing season against rice,the control effect of rice sheath blight was higher than that of thifluzamide-azoxystrobin 25% SC.Compared with jinggangmycin,thifluzamide and azoxystrobin single formulations,azoxystrobin-thifluzamide 4% SO showed 16.8%-20.0%,12.2%-17.7% and 14.2%-17.3% increase in the control effect,respectively,and the yield in the treatment group was 3.6%-19.0% higher than that of other treatments.Compared with other formulations or single agents,azoxystrobin-thifluzamide 4% SO had the advantages of good prevention effect,long effective period ,labor saving and time saving.The product had preventive and therapeutic effects.

Key words Thifluzamide;Azoxystrobin;Spreading oil;Control effect;Rice sheath blight

基金项目 国家重点研发计划项目(2016YFD0200507)。

作者简介 曲继林(1983—),男,辽宁沈阳人,硕士,从事农药应用研究。通信作者:纪明山,教授,博士,从事生物农药及农药毒理学研究;徐军,助理研究员,从事农药制剂研究。

收稿日期 2020-07-06

展膜油剂是指在普通油剂中加入水面扩散剂形成的新型农药剂型,以洒滴方式施用,无需加水或拌土,不用任何植保器械,直接把药液滴到水田中[1]。施于水面形成薄膜,能迅速均匀扩散全田,形成药膜层,并沿水稻茎基部向上爬升到病虫害灶处[2],达到高效防治病虫害的目的[3]。该剂型具有省工节本、高效、长效、使用便捷等特点[4]。……

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