《植物病虫害绿色防控技术》课件-柑橘红黄蜘蛛（双语）

柑橘病虫害绿色防控柑橘红、黄蜘蛛GreenPreventionandControlofCitrusDiseasesandPestsCitrusRedandYellowMites柑橘红蜘蛛——1.为害状柑橘全爪螨（红蜘蛛）为害状Citrusredmite-1.HazardHazardofpanonychuscitrimcgregor(citrusredmite)成螨卵柑橘红蜘蛛——显微镜下的红蜘蛛Citrusredmite-redmiteundermicroscopeImagoesEgg柑橘红蜘蛛——2.发生规律繁殖力特强一年十多代世代重叠知识回顾：一年多代的害虫，在一定时间和空间前后世代往往相互重叠，同一时间出现不同世代的相同虫态，不同虫态相互并存，这样的现象叫做世代重叠。Citrusredmite-2.OccurrenceregularityExtremelyhighfertilityMorethantengenerationsayearGenerationoverlappingKnowledgereview:pestsofmorethanonegenerationinayear,aroundacertaintimeandspaceGenerationsoftenoverlapwitheachotherandthesamewormsofdifferentgenerationsappearatthesametimeThecoexistenceofdifferentinsectstagesiscalledgenerationoverlapping.柑橘红蜘蛛——2.发生规律越冬场所叶片背面枯枝落叶土壤表层Citrusredmite-2.OccurrenceregularityOverwinteringplace柑橘红蜘蛛——2.发生规律3月开始为害繁殖7-8月高温数量少9-10月秋梢期温度渐降虫口密度达高峰4-5月春梢期种群数量迅速增加达高峰Citrusredmite-2.OccurrenceregularityFromSeptembertoOctober,thetemperaturegraduallydropsintheautumnshootstage,andthepopulationdensityreachesthepeakLowamountfromJulytoAugustduetohightemperatureLowamountfromJulytoAugustduetohightemperatureFromApriltoMay,thepopulationrapidlyincreasestoapeakinthespringshootstage柑橘黄蜘蛛——1.为害状柑橘始叶螨（黄蜘蛛）为害状Citrusyellowmite-1.HazardHazardofEotetranychuskankitusEhara(yellowmite)柑橘黄蜘蛛——显微镜下的黄蜘蛛Citrusyellowmite-yellowmiteundermicroscope防治措施（1）农业防治加强柑桔园水肥管理

冬春季干旱时及时灌水、切忌偏施氮肥Strengthenwaterandfertilizermanagementincitrusorchards.Irrigateintimeincaseofdroughtinwinterandspring,andavoidexcessiveapplicationofnitrogenfertilizer冬季结合整枝修剪剪除过密枝条和被害枝条（2）生物防治

Biologiccontrol

保护和利用天敌，对害螨有显著的控制作用。4～5月和9～10月间，在平均每叶有害螨2头以上的柑橘树上，每株释放钝绥螨等捕食螨。

Protectandmakeuseofnaturalenemiestosignificantlycontrolmites.FromApriltoMayandSeptembertoOctober,onthecitrustreeswithanaverageofmorethantwoharmfulmitesperleaf,releasepredatorymitessuchasAmblyseiidaetoeachtree.（3）化学防治

Chemicalcontrol合理用药的关键是掌握防治指标、防治时期和药剂种类。

Thekeytorationaluseofpesticidesistomasterthecontrolindicators,controlperiod,andchemicaltypes.Citrusyellowmite-yellowmiteundermicroscopeAgriculturalcontrolPruneinwintertoremoveoverdensean