大青山油松虎榛子根系分泌物及根際土壤酶活性研究.pdf

1、內(nèi)蒙古農(nóng)業(yè)大學碩士學位論文大青山油松虎榛子根系分泌物及根際土壤酶活性研究姓名：寧心哲申請學位級別：碩士專業(yè)：林木遺傳育種指導教師：白淑蘭20080501TheStudyonRootExudatesandRhizosphereSoilEnzymeofPinustabulaeformisandOstryopsisdavidianaonDaQingshanMountains’AbstractThispapermainlyresearchest

2、herhizosphereofPinustabulaeformisandOstryopsisdavidiana，whicharethesurvivalplantsofDaQingshanMountaindegeneratedsystemThispapergetsasystemicinvestigationtorootexudatesandearthenzymeofthetwoplantsThefirststepconclusionsar

3、easfollows：(1)UsingGCMStoanalyzeandidentifytherootexudatesof只tabulaeformisOdavidianaanditsmixedforestHydrocarboninorganicacid，organicacid，esters，aldehyde，phenoliecompoundsandalcoholsarcthemainelement，butthedetailedelemen

4、tsandtherelativecontentaredifferenttodifferenttreesandforesttypes(2)Bycomparingtheexudatesofroots，exudatesofsoilsamplefromtheedgeoftheforestandexudatesofcontrolplantsinlab，wegetaconclusionthatthemaincontentsofrootexudate

5、saremainlyfromtheprocessofitsgrowth(3)Theenzymaticactivityorderlinessofrootacidicphosphataseandrootalkalinephosphataseindifferenttypesofwoodlandsdeveloplikethis：ThemixedforestofPtabulaeformisandOdavidianapurePtabulaeform

6、isforestpureOdavidianaforestTheenzymaticactivityisthehighestinJulyandthesecondhighinSeptemberbutthelowestinMayTheenzymaticactivityofrootsineitherseasonorwoodlandishigherthanitontheedgeoftheforest，andtheirdifferentialsare

7、obviousTheenzymaticactivityofforestedgehasnoobviousorderlinessTheactivitylinesofAcidicphosphataseindifferentseasonsaresameandactivitylinesofalkalinephosphataseisnotobvious(4)TheactivitylinesofPolyphenoloxidaseandUreasein

8、differenttypesofwoodlandsdeveloplikethis：ThepurePtabulaeformisforestpureOdavidianaforestmixedforestofPtabulaeformisandOdavidianaTheactivityabilityoftheUreasegrowswiththechangeofseasons，buttheactivitylineofPolyphenoloxida

9、seisnotobviousTheUreaseenzymaticactivityofrootsineitherseasonorwoodlandishigherthanitontheedgeoftheforestThedifferencesarenotobviousexceptthemixedforestinMayandpurePtabulaeformisforestinJulyandSeptember111eenzymaticactiv

10、ityofedgeforestsandrootsareoppositeTheenzymaticactivityofforestedgedoesnothaveobviousorderlinessThePolyphenoloxidaseenzymaticactivityofrootsineitherseasonorwoodlandislowerthanitontheedgeoftheforestThedifferencesarenotobv