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《防治棉铃疫病的9种化学杀菌剂筛选与评价-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、河北农业科学,2014,18(3):39—42JournalofHebeiAgTiculturalSciences编辑齐俊贤防治棉铃疫病的9种化学杀菌剂筛选与评价鹿秀云,周洪妹,李社增,郭庆港,李宝庆,马平(河北省农林科学院植物保护研究所,河北省农业有害生物综合防治工程技术研究中心,农业部华北北部作物有害生物综合治理重点实验室,河北保定071000)摘要:为筛选出防治由苎麻疲茵引起的棉铃疫病的有效化学药剂,采用菌丝生长速率法测定了9种杀菌剂(40%五氯硝基苯粉卉I】、50%福美双可湿性粉剂、8O%三乙膦酸铝可湿性粉剂、80%代森
2、锰锌可湿性粉剂、7O%甲基托布津可湿性粉剂、722g/L霜霉威盐酸盐水剂、250g/L嘧菌酯悬浮液、52.5%嗯酮·霜脲氰水分散粒剂、46.1%氢氧化铜水分散粒剂)对棉铃疫病病原茵的室内毒力,并通过田间药效试验评价了不同杀茵剂对棉铃疫病的防治效果。田间药效试验结果表明:46.1%氢氧化铜水分散粒剂和80%三乙膦酸铝可湿性粉剂防治效果较好,3次施药后对棉铃疫病的防治效果分别为67.74%、44.68%、36.54%和45.16%、44.68%、32.69%,防效相对稳定,可优选用于棉铃疫病的防治。关键词:棉铃疫病;苎麻疫茵;室内毒
3、力试验;田间药效试验;防治效果中图分类号:S435.62文献标识码:A文章编号:1008-1631(2014)03-0039-04ScreeningandEvaluationof9kindsofChemicalFungicidestoControlCottonBollBlightLUXiu—yun,ZHOUHong—mei,LIShe-zeng,GUOQing—gang,LIBao—qing,MAPing(InstituteofPlantProtection,HcbeiAcademyofAgricultureandForestr
4、ySciences,IPMCenterofHebeiProvince,KeyLaboratoryofIntegratedPestManagementonCropsinNorthernRegionofNorthChina,MinistryofAgriculture,Baoding071000,China)Abstract:InordertoscreeningeffectivechemicalfungicidestocontrolcottonbollblightcausedbyPhytophthoraboehmeriaeSawada
5、,thevirulencesofthe9testedfungicides(40%quintozenepowder,50%thiramwettablepowder,80%fosetylaluminumwettablepowder,80%mancozebwettablepowder,70%thiophanatemethylwettablepowder,722g/Lpropamocarbhydrochlorideaqueoussolution,250g/Lazoxystrobinsuspendingagent,52.5%evilket
6、onecymoxanilwaterdispersiblegranuleand46.1%cuprichydroxidewaterdispersiblegranule)againstthepathogenPhytophthoraboehmeriaeweredeterminedbythemycelialgrowthratetest,whilethecontroleficacywasevaluatedbyfieldtrials.Theresultsshowedthatafter3timesapplication.46.1%copperh
7、ydroxideWGand80%fosetyl—aluminiumWPexhibitedasignificantcontroleficacy(67.74%,44.68%,36.54%and45.16%,44.68%,32.69%)againstcottonbollblight,andthecontroleficacywasrelativelystable.Thesetwokindsoffungicidescouldbeusedtocontrolcottonbollblightinagriculturepractice.Keywo
8、rds:Cottonbollblight;Phytophthoraboehmeriae;Indoorvirulencestest;Fieldeficacytrials;Controlefficacy烂铃是棉花生产上的一大病害,每年在我国主要降,棉农损失惨重¨,。
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