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TheekistenceformofachemicalelementinsoildependsnotonlyonthePropeniesoftheelement.butalsoonphysicalgeographiccondihons.eSPeCiallytheacandpropeltyofsoil.Theregional~renhallonsofphysicalgeographiccondihonsandofsoilacsaswellastheeffectSofthesechrenhallonsonsoilelementformsprovidetheorehcalPOssibilityforthegeoglaphicamrentiahonsofsoilelementfonns.ThecombinationanteofelementekistencefonnsinsoilrejeCtStheelement'smobilityortranSPOhabilityinsoilenvironmentandtheelement'ssuPPlyandavailabilitytopla… 相似文献
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