我国南方稻区镉植物有效性预测模型
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中图分类号：X53 文献标志码：A 文章编号：1672-2043（2025）06-1545-09 doi：10.11654/jaes.2024-0602
Prediction models for soil cadmium phytoavailability in paddy fields of southern China
SHE Zijian'， DAI Yuan2，3，4 ，LI Linfeng2，3，4，LI Qi2，3，4 ，LUO Weilin5，LI Yichun2，3，4* （1.ColegeofEnviroentaliencedEngeg，ZongkaiUnversityfgriculturalandEginingGuangouin; 2.InstituteofAgriculturalResourcesandEnviroent，GuangdongAcademyofgriculturalSiencesGuangzou060Cina;Key LaboratoryofPlantutritionandFertizerinSouthRegionMinistryofAgricultureandRuralAfairs，Guangzou51064China; 4.GuangdongKeyLaboratoryofNutrientCylingandFarmlandConservation，Guangzou5O640，China;5.AgriculturalandRural Service Centerin Huangbei Town， Xingning City， Guangdong Province，Huangbei ， China）
Abstract：TofurtherdeterminethequantitativerelationshipbetwensoilCdphytoavailabilityandFeoxidesunderfeldconditions，178 pairsfrownriceandrhzosperesoilsampleswerecolectdandanalyzedfromthetypicalCd-contaminatedpddyfeldsinGuagdong ProvinceofCnaetsoftraforatioofidsosilCdpoalabilityevestigatdndeprdictioelsfor soilCdphytoavlabilityintypicalpaddyfieldsofsoutheChinawereestablishedbasedonFeoxides.Theresultsshowedthaddysoil inthestudyareasuferedfrommoderatetosevereCdpollutionandimposdaghpotentialeologicaliskoagiculuralprouctio; Comparedwithdilutehydrochloricacid，DTPAandammoniumacetateextractionmethods，thesoilavailableCdcontentextractedby calciumchlorideextractionmethodCaCl-Cd）wasmostcloselyrelatedtothegrainCdcontent（Cdr）;theCaCl-Cdcontentexhibiteda significanandpositivecoelationithtetotalFeotet（es）anddidasigiicanandegaiecoelatonwitteatioffreon oxide（Fed）toFs，eCdrtentsosigificatandposivecoelaonihFesotnt，egaieorelaionioththe FedandFeccontets，positivecelationiththeatiofmopousiooxide（Fe）toFedndsignificantandegatiecoeaion withtheratioofFedtoFes;thepredictionmodelsfsolCdphytoavailabilityouldbeusedtoacuatelypredictesoilavalableCdand grainCdcontentsinpadyfieldsofthisstudyandthevaluesofrootmeansquareerorbetweetepredictedvaluesandtheasured values were 0.034 and O.14， respectively.
Keywords：paddy soil; cadmium（Cd）; phytoavailability; iron（Fe） oxides;predictionmodels
当前，我国南方稻区镉（Cd）污染问题受到广泛关注。（剩余19285字）
