生長調(diào)節(jié)劑對園林用銀杏斷根后根系恢復(fù)及生長的作用.pdf

1、河北農(nóng)業(yè)大學(xué)碩士學(xué)位論文生長調(diào)節(jié)劑對園林用銀杏斷根后根系恢復(fù)及生長的作用姓名：周秋利申請學(xué)位級別：碩士專業(yè)：森林培育指導(dǎo)教師：袁玉欣20050601TheeffectofgrowthregulatorsontherootregenerationandgrowthofGinkgoAuthor：ZhouQiuLiMajor：ForestryDirector：YhanYuxinAbstractBeingwiththedevelopmentof

2、cities，therearemanyissuesoftheenvironmentbecamemoreoutstanding，suchasairpollution，tackofgreenlandsystemandSOonTherefore，civilianrecognizedthattoplantbigtreeincitywouldimprovethelivingsurrouding，whichledtoitbecameacurrent

3、waytoaddgreenincityButduetovariousreasons，manybigtreewerefailtosurviveafterlongdistancetransportationDiggingbigtreefromforest，ontheotherhand，wouldalsodestroyotherforestenvironmentSo，toculturebigtreeinnurserywillheanewway

4、tobreakdeadlockmentionedaboveThethesisreportthemainresuitsofresearchonculturingbigGinkgotree，inwhichachieveseveralpurposes，thatis，notonlyincreasesurvivalrateinallseason，decreasethecost，butalsoreduceandevencancelpruningwi

5、thtransplantingBytreatinggrowthregulatorsonGinkgotreecuttedlateralroot，therelationsbetweenregulatorsandtreegrowth，itsphysiologicalreactionswerestudiedThesuggestionareshowedasbelow(1)ThegrowthrhythmofGinkgowithrootcutting

6、treatmentisthesameasnon—cuttingone，ofwhichheightgrowthhassinglepeakatmidmonthofJune，anddiametergrowthhastwopeakappearedatmidmonthofJuneandSeptemberrespectively(2)Withthetreatmentofgrowthregulators(IAA、NAA、ABT3)，therootof

7、Gingkothatwascuttedbeforeappearednewgrowingpoints，whichbroughtonagreatdealroots，especiallyinthesoillayerof20～40cmThelargeleafareaindex(LAI)ofGinkgo，ontheotherhand，wcrcdifferentwithdifferentregulators，ofwhichthetop267wast

8、hesecondlevelofABT3treatmentasabout153timeastheckTheLAIofsecondlevelofIAAtreatmentandthethirdlevelofNAAtreatmentwererespectivelyhigher4195％and2471％thanck，whichwerethesecondandthethirdtreatmentforstimulatingrootgrowth(3)T

9、hevariationalruleofPnofGingkowerethesamewithdifferenttreatmentsfrom06：00to18：00ofwhichhastwopeaksat10：00and16：00，andthetranspiration，howeveronlyonepeakat12：00inwholedayComparingwithck，theaverageoftotalNelementandKelement

10、inGinkgoleavesdecreasedslightlywhenwiththetreatmentofdifferentgrowthregulatorsButthePelementwerenotvarietyregularlyAlso，otherelement，suchasCa、Cu、Mg、Mn，wereregularlyvariationinsteadOnlythreetreatments，ontheotherhard，allel