《植物病虫害绿色防控技术》课件-柑橘溃疡病双语

柑橘病虫害绿色防控柑橘溃疡病GreenPreventionandControlofCitrusDiseasesandPestsCitrusCanker柑橘溃疡病Citruscanker细菌性病害Bacterialdiseases国内外植物检疫对象Domesticandforeignplantquarantineobjects感染后终生带病Lifelongdiseaseafterinfection叶片受害Leafhazard症状特点：叶片受害Symptomcharacteristics:leafhazard侵染初期Earlystageofinfection症状特点：叶片受害Symptomcharacteristics:leafhazard症状特点：果实、枝梢受害Symptomcharacteristics:harmtofruitsandshoots严重影响商品性Seriousimpactoncommodity柑橘溃疡病病发病规律Pathogenesisofcitruscanker病菌在病组织内越冬Pathogensoverwinterindiseasedtissues细菌从病斑中溢出Bacteriaoverflowfromspots第二年温度适宜湿度高短距离传播：风雨、昆虫、枝叶交互接触Short-distancetransmission:windandrain,insects,interactivecontactofbranchesandleaves寄主幼嫩组织Hostyoungtissue气孔水孔皮孔伤口侵入PoreWaterholeLenticelWoundintrusion寄主发病Hostonset远距离传播：带菌苗木、接穗、果实Long-distancetransmission:seedlingswithbacteria,scionsandfruits潜育期3-10天Incubationperiodof3-10daysSecondyearAppropriatetemperatureHighhumidity柑橘溃疡病病发病规律Pathogenesisofcitruscanker4

56789104月上旬-10月下旬均可发生ItcanoccurfromearlyApriltolateOctober5月中旬春梢发病高峰MidMayPeakincidenceofspringshoots6-8月夏梢发病高峰FromJunetoAugustPeakincidenceofsummershoots9、10月秋梢发病高峰FromSeptembertoOctoberPeakincidenceofautumnshoots6-7月上旬果实发病高峰FromJunetoearlyJulyPeakincidenceoffruits柑橘溃疡病防控难度大Highcontroldifficultyofcitruscanker1.柑橘溃疡病菌喜欢侵染幼嫩组织。Leptosphaeriacitruscankerlikestoinfectyoungtissues.2.柑橘种植区气候利于病原菌繁殖，且病原菌存活能力强。Theclimateinthecitrusplantingareaisconducivetothereproductionofpathogens,andthepathogenshavestrongviability.3.一旦感染溃疡病，柑橘树会终生带菌。Onceinfectedwithcanker,citrustreescarrybacteriaforlife.4.柑橘潜叶蛾的危害，会诱发该病。Theharmofcitrusleafminerwillinducethedisease.综合防治Integratedcontrol1.植物检疫Plantquarantine由于柑橘溃疡病属于国内外的植物检疫对象，因此必须严格做好相关检疫工作。Sincecitruscankerisaplantquarantineobjectathomeandabroad,relevantquarantineworkmustbestrictlycarriedout.综合防治Integratedcontrol2.农业防治Agriculturalcontrol

培育无病苗木

Cultivationofdisease-freeseedlings

冬季清园

Orchardclearinginwinter

加强修剪

Strengthenpruning

减少果实和叶片损伤

Reducefruitandleafharm

及时防治潜叶蛾等害虫

Timelycontrolleafminersandotherpests剪除发病枝叶和果实，并集中烧毁。Theaffectedbranches,leaves,andfruitsshouldberemovedandburntinacentralizedway.综合防治Integratedcontrol3.化学防治

Chemicalcontrol

选择内吸传导性药剂

Selectsystemicconductiveagents

枝梢展叶到老熟前、幼果谢花后20天直到有抗病力前都必须喷药保护，且喷药间隔不宜超过12天。

Thechemicalsmustbesprayedforshootsduringtheperiodfromtheleafexpansionstagetotheripeningstage