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1、湖南农业科学2008,(1):74～77HunanAgriculturalSciences柚类柑桔黑点病暴发原因与防治技术12345卢胜进,蒋仁军,李爱华,马新民,杨永华(1.江永县桃川洞名特优新产品开发区科技发展局,湖南江永425400;2.江永县高泽源林场,湖南江永425400;3.湖南农业大学,湖南长沙410128;4.湖南省潇湘食品有限公司,湖南江永425404;5.江永县林业局,湖南江永425400)摘要:通过系统调查、抽样调查、走访、试验、应用等方式对柚类Citrusgrandis(L.)Osbeck柑桔黑点病Dia
2、porthecitri(Fawcett)Wolf暴发原因进行分析。结果表明,该病的暴发主要由以下几个方面的因素造成:不良栽培管理使得病源长期大量累积,柚树抗逆性降低;黑蚱蝉等病虫造成大量伤口和枯枝;病害发生时未引起足够重视;柚园小气候适宜该病的发生。采取综合防治技术,突出抓好科学建园、标准化栽培、“资源式”联防联治黑蚱蝉、合理施药、套袋保果,可控制该病发生危害。关键词:柚类;柑桔黑点病;暴发原因;防治技术。中图分类号:S436.669文献标识码:B文章编号:1006-060X(2008)01-0074-04ReasonAnaly
3、sisonOutbreakandControlTechniqueofCitrusBlack-dotDiseaseofPomelo12345LUSheng-jin,JIANGRen-jun,LIAi-hua,MAXin-min,YANGYong-hua(1.ScienceandTechnologyDevelopmentBureauofTaochuanCavityExcellentandNewProductDevelopmentAreaofHunanProvince,Jiangyong425400,PRC;2.GaozeyuanFo
4、restryStationofHunanProvince,Jiangyong425400,PRC;3.HunanAgriculturalUniversity,Changsha410128,PRC;4.XiaoxiangFoodLimitedCompanyofHunan,Jiangyong425404,PRC;5.JiangyongCountyForestryBureauofHunanProvince,Jiangyong425400,PRC)Abstract:Theoutbreakreasonsofthepomelocitrusm
5、elarusewereanalysedbysysteminvertigation,samplinginvestigation,visiting,test,applicationandsoon.Theresultsshowedthatthemainreasonswerefollowed:(1)unsuitableplantingmanagementresultedinthatagreatdealofgerminachronicallyaccumulatedandtheresistanceofpomelotreesreduced;(
6、2)blackcicadaetc.causedalotofwoundsanddeadwood;(3)therewasnoenoughattentionwhenplantdiseasehappened;(4)therewassuitablemicroclimateforthepomelocitrusmelanoseinpomelopark.Integratedcontrolmanagementsincludingfocusingonscientificorchardconstruction,standardizedplanting
7、,blackcicadacontrolin“resarcepattern”,properapplicationofpesticide,andprotectingfruitswithcoverscouldeffectivelycontroldamagescausedbypomelocitrusinthemoderateoutbreakyear.Keywords:pomelo;citrusmelanose;outbreakreason;controltechnique柑桔黑点病Diaporthecitri(Fawcett)Wolf是
8、指发势,近年来,该病已成为我国广大柑桔区的主要病害[2]生在柑桔新梢、嫩叶和幼果(青果)上的柑桔树脂病,之一。据调查,江永县冰糠橙、脐橙、夏橙、香柚、目前在我国和日本柑桔上发生最普遍、危害比较严溪蜜柚、温州蜜柑等柑桔园,柑桔黑点病病株率达重。黑点病病果个小、果面
