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时间:2018-09-15
《玉米灰斑病两种施药防治方法的研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、万方数据云南农业大学学报JournalofYunnanAgriculturalUniversity,201l,26(6):735-739,748hnp://xb.ynatLedILcnISSN1004—390X:CODENYNDXAXE·mail:xb@ynan.edu.cnDOI:10.3969/j.issn.1004—390X(n).2011.06.001玉米灰斑病两种施药防治方法的研究水李琪彬1,阎发祥1,陈映岚1,何月秋2一(1.云南省禄劝县农业技术推广总站,云南禄劝651500;2.云南农业大学农学与生物技术学院,云南昆明650201)摘要:玉米灰
2、斑病在云南冷凉山区严重发生。本研究在玉米大喇叭口期,每667m2取10kg砂土分别与200g的70%丙森锌WP,20g的43%戊唑醇sc,22g的25%苯醚甲环唑WP和100g的40%丙环唑ME混合均匀后,施入喇叭口中,在收获前7d的防治效果分别达49.21%,54.88%,44.88%,75.32%,挽回产量28.70%,23.08%,47.48%,76.71%。以各药剂同样剂量分别兑水50kg后叶面喷雾,且间隔10d再喷施1次,与药土法同期调查的防治效果分别达48.02%,50.75%。41.03%,72.55%,挽回产量16.26%.9.40%,16.
3、66%,35.5l%。药土法用药少,施药方便.效果好,可在山区推广应用。关键词:玉米;灰斑病;药土;防治中图分类号:S435.131文献标识码:A文章编号:1004—390X(2011)06—0735—05ControlofMaizeGrayLeafSpotbyTwoApplicationswithFungicidesLlQi—binl,YANFa-xian91,CHENYing—lanl,HEYue—qiu2(1.AgriculturalTechnologiesExtensionStationofLuquanCounty,YunnanProvince,ht
4、quan651500,China;2.CollegeofAgronomyandBiotechnology,YunnanAgriculturalUniversity,Kunming650201,China)Abstract:Maizegrayleafspot(MGLS)isverysevereinthemountainousareasofYunnanProvince.Atthepre-tassellingstage,when200gof70%propinebWP,20gof43%tebuconazoleSC,22gof25%difenoconazoleWPan
5、d200gof40%propiconazolMEmixedwith10kgofsandysoil.respec·tively.per667m2wereappliedintocentralleavesofmaize。thecontroleffectsofMGLSreached49.21%,54.88%,44.88%and75.32%atthe7daybeforeharvestandtheyieldsretrievedwere28.70%。23.08%,47.48%and76.71%,respectively.Whenthesameamountoffungici
6、desmixedwith50kgofwaterwassprayedontoleavesper667m2twiceevery10days,thecontroleffectswere48.02%.50.75%。41.03%and72.55%andtheyieldsretrievedwere16.26%,9.40%,16.66%and35.51%。respectively.Thefungicide·soilmixtureusedlessfungicide,Wagappliedmoreeasilyandhadbettercontroleffectthanfungic
7、idespray.andthusWasextendableinthemountainousarea.Keywords:maize;grayleafspot;fungicide—soilmixture;control玉米灰斑病自1925年在美国伊利诺依斯州‘11发生以来,随着免耕和秸秆还田的大面积推广,已在世界许多玉米种植区蔓延开来‘2。41。我国自1991年在辽宁省发生以来㈨,已逐渐在河北、山东、云南、四川、重庆、湖北和贵州等产区大量发生。特别是自2002年灰斑病进入收稿日期:2011一03一10修回日期:2011一04—27网络出版时间:2011一ll一1
8、417:36·基金项目:云南省支撑计划项目(2006
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