简介：Juglansmandshurica格言的绿皮的摘录是为学习它的杀虫的活动并且分析活跃部件的提取bycommon方法。白酒摘录和氯仿摘录分开的Resultsshowed(用氯仿fromalcohol摘录分开了)J的形式绿色皮。mandshurica对LymantriadisparL的幼虫在接触toxicityand胃毒性举办杀虫的活动...在摘录forfive天的申请以后，为两篇摘录的Lymantriadispar的幼虫的改正的死亡是在≥的集中的超过50%in接触毒性和胃毒性5g·L~(-1)。为白酒摘录和摘录的氯仿部分的insecticidalactivity是在在胃毒性的接触toxicitythan的更多的效果，但是在杀虫的活动的重要差别都不是摘录的foundbetween白酒摘录和氯仿部分。在从绿皮of/mandshurica的氯仿partof摘录的活跃部件被GCMS分析。分析结果证明在氯仿的活跃部件摘录分开的thatthe是：(1)juglone(5-hydroxy-l,4-naphthaoquinone)，相对内容27.11%，(2)1,5-Naphthalenediol，相对内容9.52%，(3)7-Methoxy-l-tetralone，相对内容6.81%，(4)Benzofuran，2,3-dihydro-，relativecontent6.76%，(5)4-Hydroxy-2-methoxycinnamaldehyde，相对内容3.99%，(6)2-Methoxy-4-vinylphenol，相对内容3.05%。

简介：Throughthemethodsofcorrelationanalysisandmainfactoranalysis,therelationshipbetweenthepoplarINAbacterialcankerandcircumstanceswasanalyzedand9mainfactorsforaffectingthediseasewereselected.Basedonthecomprehensiveanalysisofmainfactorsandinducedfactors,thestandardforriskgradesofthisdiseasewaspromotedandnortheastregionofChinawasdividedinto4districtswithdifferentriskgrades:seriouslyoccurringdistrict,commonlyoccurringdistrict,occasionallyoccurringdistrict,andun-occurringdistrict.NonlinearregressionanalysisforsixmodelcurvesshowedthattheRichardgrowthmodelwassuitablefordescribingthetemporaldynamicsofpoplarINAbacterialcanker.Bystepwisevariableselectionmethod,themulti-variablelinearregressionforecastingequationwassetuptopredictthenextyear'sdiseaseindex,andtheGM(1,1)modelwasalsosetupbygreymethodtosubmitmiddleorlongperiodforecast.

简介：Theisolation,cultureandtheactivedeterminationofpoplaricenucleationactive(INA)bacteriaandtheinoculationtestsinlaboratoryandfieldwereconducted,andthevarieties,distributionandnumberofpoplarINAbacteriaanditspathogenicityandfreezinginjurypropertyweredetermined.ThestudyresultsshowedthattheINAbacteriawidelyspreadonpoplarinNortheastChinaandcausedthefrozeninjuryforpoplarunderthefrostconditioninSpringorAutumn,whichwasthekeyfactortoinduceINAbacterialcanker.Throughevaluationandinvestigationofdifferentpoplarvarietiesandinoculationtests,finedisease-resistantvarietiesandstrainsofpoplarsuitableforNortheastChinawereselected.Furthertestsforstrongseedlingshowedthatburyingcuttingsinsandandcoveringwithplasticfilmcouldeffectivelyavoidthefrostbite,frozenanddroughtdamage,reduceINAbacteriainfection,andpromotepoplargrowth.INAbacterialcankerwasdetectedearlybyhighlyspecializedantiserumsofINAbacteriaandtheagglutinatedtestofring-shapedboundarysurface.Theinducerssuchasstreptomycin,phenylmercuricacetae,salicylicacidandheat-killedbacteriatoimmersecuttings,haveobviousinduceddisease-resistanteffect.Beforepoplarsproutedinearlyspring,throughsprayingthesolutionoffrostbiteagent,thecontroleffectalsowasobvious.

简介：Underartificially-simulatedcomplexsalt-alkalistress,thelevelsofactiveoxygenmetabolisminrootswerestudiedusingthree-year-oldcuttingseedlingsofSpiraea×bumalda'GoldMound'andSpiraea×bumalda'GoldFlame'.Thepresentstudyaimedatexploringtheantioxidantcapacityinrootsofspiraeasandrevealingtheiradaptabilitytosalt-alkalistress.Resultsindicatethattheoxygenfreeradicalscontents,electrolyteleakageratesandMDAcontentsinrootsofSpiraea×bumalda'GoldMound'andSpiraea×bumalda'GoldFlame'showanincreasingtendencywiththeincreasesofthesalinityandpHvalue,whereastheactivitiesofsuperoxidedismutase(SOD),peroxidase(POD)andcatalase(CAT)allincreasedfirstlyandthendecreased.Withtheincreaseinintensityofsalt-alkalistress,theCATactivityinrootsofSpiraea×bumalda'GoldFlame'ishigherandtheincreasingextentsintheoxygenfreeradicalscontents,electrolyteleakageratesaswellasMDAcontentsarelowercomparedwithSpiraea×bumalda'GoldMound',indicatingthatSpiraea×bumalda'GoldFlame'hasastrongerantioxidantcapacity.