生物炭协同耐盐作物提高滨海滩涂盐土有效磷含量

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关键词：滨海滩涂盐土；生物炭施用；耐盐作物；碱性磷酸酶;微生物多样性；有效磷

中图分类号：S156.4；X144 文献标志码：A 文章编号：1672-2043（2025）12-3190-10 doi：10.11654/jaes.2024-1112

Biochar synergizes with salt tolerant crops to increase available phosphorus content in coastal mudflat saline soil

XIAXiaoxue，PANShan，YUChang，LIMingyan，DOUQixiang，LIUXin* （College of Ecologyand Environment，Nanjing Forestry University，Nanjing 21Oo37， China）

Abstract：Thepurpoeoftissudyastoexplorethesergisticgulationofbiocharandsalterantcropsoeavaablepospos content，soilpcaldcalpopetis，ndobluiyioasaldfatliildtoarifyf phosphoruactiationinaiesoil，ostoimprovetuilzationeficyofudflatsosSitramntgoupseretinte coastalmudflatareaofYnceng，JngsuProvince，inludigCKwithoutbiocarandmilksaltrops，BCwithiochar，salttoleatop （oats ZW1andsorghumZW2），ndthecombinedtreatmentofbiocharandsalttolerantcrops（oatsV1andsorghumV2）.Thougfield experiments，teyicalandcemicalproperties，icroialdivrsityalalinepospatase（AL）activityndilablespos contentofthesoilweredetermined.Redundancyanalysisandpartialleastsquaresstructuralequationmodeling（PLS-SEM）wereusedto analyzetheinteractionsbetweenvariousfctors.Theresultsshowedthathecombnedtreatmentofiocharandsalttolerantcrops（Vland V2）significantly reduced soil pH and EC，increased water content， porosity，and cation exchange capacity，and increased soil organic matter，total phosphorus，and available phosphorus content by 603.5% 447.5% ，and 491.0% ，respectively.In the microbial community，the abundanceofProteobacteriasgnificantlyicreasd，wichasositivelyoelaedwithalkalneosphtaseactivityincasedby

2025年12月

（204号 184% ）and wasa keymicrobial grouppromoting phosphorusactivation.ThePLS-SEM modelindicates thatsoil physicochemical propertiesjointlyregulatetheavailablephosphoruscontentthroughdirectpathways（pathcoeficientO.6931）andindirectpathways （microbialcommunityO.8677andalkalinephosphataseactivityOO829）.Thesynergisticefectofbiocharandsalttolerantplatscan significantlyimproetesicalandchemicalpropetisofsoil，ctivateicobialfunctionsdimproveosphousilability providing scientific basis and technical.

Keywords：coastalmudflatsalinesoil;biocharapplications;salttolerantrops；alkainephosphatase；microbialdiversity；avalable phosphorus

江苏盐城滨海滩涂面积占我国滩涂总面积的25%[1] ，其作为江苏省重要的后备耕地资源有着极大的开发利用潜力。（剩余17297字）