《植物病蟲害綠色防控技術(shù)》課件-柑橘潰瘍病雙語

柑橘病蟲害綠色防控柑橘潰瘍病GreenPreventionandControlofCitrusDiseasesandPestsCitrusCanker柑橘潰瘍病Citruscanker細(xì)菌性病害Bacterialdiseases國內(nèi)外植物檢疫對象Domesticandforeignplantquarantineobjects感染后終生帶病Lifelongdiseaseafterinfection葉片受害Leafhazard癥狀特點：葉片受害Symptomcharacteristics:leafhazard侵染初期Earlystageofinfection癥狀特點：葉片受害Symptomcharacteristics:leafhazard癥狀特點：果實、枝梢受害Symptomcharacteristics:harmtofruitsandshoots嚴(yán)重影響商品性Seriousimpactoncommodity柑橘潰瘍病病發(fā)病規(guī)律Pathogenesisofcitruscanker病菌在病組織內(nèi)越冬Pathogensoverwinterindiseasedtissues細(xì)菌從病斑中溢出Bacteriaoverflowfromspots第二年溫度適宜濕度高短距離傳播：風(fēng)雨、昆蟲、枝葉交互接觸Short-distancetransmission:windandrain,insects,interactivecontactofbranchesandleaves寄主幼嫩組織Hostyoungtissue氣孔水孔皮孔傷口侵入PoreWaterholeLenticelWoundintrusion寄主發(fā)病Hostonset遠(yuǎn)距離傳播：帶菌苗木、接穗、果實Long-distancetransmission:seedlingswithbacteria,scionsandfruits潛育期3-10天Incubationperiodof3-10daysSecondyearAppropriatetemperatureHighhumidity柑橘潰瘍病病發(fā)病規(guī)律Pathogenesisofcitruscanker4

56789104月上旬-10月下旬均可發(fā)生ItcanoccurfromearlyApriltolateOctober5月中旬春梢發(fā)病高峰MidMayPeakincidenceofspringshoots6-8月夏梢發(fā)病高峰FromJunetoAugustPeakincidenceofsummershoots9、10月秋梢發(fā)病高峰FromSeptembertoOctoberPeakincidenceofautumnshoots6-7月上旬果實發(fā)病高峰FromJunetoearlyJulyPeakincidenceoffruits柑橘潰瘍病防控難度大Highcontroldifficultyofcitruscanker1.柑橘潰瘍病菌喜歡侵染幼嫩組織。Leptosphaeriacitruscankerlikestoinfectyoungtissues.2.柑橘種植區(qū)氣候利于病原菌繁殖，且病原菌存活能力強(qiáng)。Theclimateinthecitrusplantingareaisconducivetothereproductionofpathogens,andthepathogenshavestrongviability.3.一旦感染潰瘍病，柑橘樹會終生帶菌。Onceinfectedwithcanker,citrustreescarrybacteriaforlife.4.柑橘潛葉蛾的危害，會誘發(fā)該病。Theharmofcitrusleafminerwillinducethedisease.綜合防治Integratedcontrol1.植物檢疫Plantquarantine由于柑橘潰瘍病屬于國內(nèi)外的植物檢疫對象，因此必須嚴(yán)格做好相關(guān)檢疫工作。Sincecitruscankerisaplantquarantineobjectathomeandabroad,relevantquarantineworkmustbestrictlycarriedout.綜合防治Integratedcontrol2.農(nóng)業(yè)防治Agriculturalcontrol

培育無病苗木

Cultivationofdisease-freeseedlings

冬季清園

Orchardclearinginwinter

加強(qiáng)修剪

Strengthenpruning

減少果實和葉片損傷

Reducefruitandleafharm

及時防治潛葉蛾等害蟲

Timelycontrolleafminersandotherpests剪除發(fā)病枝葉和果實，并集中燒毀。Theaffectedbranches,leaves,andfruitsshouldberemovedandburntinacentralizedway.綜合防治Integratedcontrol3.化學(xué)防治

Chemicalcontrol

選擇內(nèi)吸傳導(dǎo)性藥劑

Selectsystemicconductiveagents

枝梢展葉到老熟前、幼果謝花后20天直到有抗病力前都必須噴藥保護(hù)，且噴藥間隔不宜超過12天。

Thechemicalsmustbesprayedforshootsduringtheperiodfromtheleafexpansionstagetotheripeningstage