不同尺度下橡胶园土壤养分时空变异特性的分析

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1、variation；andthehydrolyzablenitrogen，availablepHospHor,totalpHospHor,availablepotassium，totalpotassium，organicandpHallpresentedmediumspatialcorrelation，whichmeanttheartificialfactorssuchasyearsofcultivation，fertilization，fieldmanagement，etc．hadreducedthestructuralfactors’influencedontheseco

2、ntents，andconsequentlyweakenedtheirspatialcorrelation．Hainansoil’Stime—spacedistributiongrapHandspace—timedifferencegrapHfurtherexplainedthechangingstatusoftotalnitrogen，availablepHospHor,totalpHospHor,availablepotassium，totalpotassium，organicandPHduringmorethan20years．Accordingtotheplentif

3、ul—lackindexesofrubbertrees’nutrients，wedividedthenutrientdistributionpattemof2008Hainanrubberplantations，hydrolyzablenitrogenwasdividedintotwomanagementsub—areas，totalnitrogen，totalpHospHor,availablepotassium，availablepotassium，andorganichadbeendividedintothreemanagementsub-areas；theninthe

4、futurerubberplantationmanagement，wecouldimplementscientificmanagementaccordingtothesesub—areasadjustingtothelocalconditions．2．Nutrients’SpatialVariationofLanyangTownRubberPlantationFromthedescriptivestatisticalresultsofsoilnutrientsdataitcouldbeseenthatthedataofLanyangTownrubberplantations’

5、hydrolyzablenitrogen．totalnitrogenandorganicconformedtonormaldistribution，andthedataofavailablepHospHor,totalpHospHor,availablepotassium，andtotalpotassiumconformedtolognormaldistribution；fromtheaspectofvariationcoefficients，theavailablepHospHor’Svariationcoe伍cientreachedthemaximum：231．9％．wh

6、iletllatofPHwastheminimum，5．97％；thevariationcoefficientslaybetween25．29％and74．16％，withtheorderoftotalpotassium>availablepc橱蚓Ⅶ绉哟吼pHospHor>hydrobTablerauo髓>totalI】i哟辱n>0呲TheCo／(C0+C)valuesofavailableandtotalpHospHorwerelessthan25％，andpresentedstrongspatialcorrelation；structuralvariationwasthe

7、maininfluentialfactorofspatialcorrelation，whichbasicallyconformedtothestudyareas’potassiumfertilizationcurrentstatusthathadbeenignoredforalongtime；andthecorrespondingpotassiumvariationwascloselyrelatedtothesoilparentmaterialsandpatterns．Thehydrolyzableni