三七产地土壤肥力状况和三七植株养分分布特征研究

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1、三七产地土壤肥力状况和三七植株养分分布特性研究ABSTRACTPanaxnotoginsengisoneofthespecificandpreciousherbalmedicinesinChina；itsproductionisofgreatsignificanceintheChineseherbalmedicineindustry．E．g．in2012，thegrossvalueofPanaxnotoginsengindustryhadexceededonehundredmillioninWenshan，YunnanProvince．Inthis

2、paper,46representativePnotoginsengplantingfieldswerechosenasthesamplingzonesintwoyears．Thegeographicinformationofeachplantingfield，soil—plantnutrientcontent，plantexternalagronomictraits，biomassandplantintemalqualityindexesweresystemataciallyinvestiCated，detectedandanalyzedbyas

3、sociatingthemethodsoffieldinvestiCationandlaboratoryanalysis．Furthermore，inordertoprovidebasicdataandscientificbasisfortheadvisablePnotoginsengproductionregionalizationandfertilization，andrealizesuperiorqualityandhighyield，thedistributionofgeographyandelevation,soil-plantnutri

4、entconditionandtheeffectsonPnotoginsengbiomassandsaponincontentindifferentplantingfieldswerecompared．Themainconclusionsareasfollows：(1)ItwasdeterminedthatthePnotoginsengplantingfieldshavebeenmovinginatrendtowardsnorthwestlocalitiesofhighaltitude，BanqiaotownofQujing(E104。03’、N2

5、5058’，2021m)whichistheoneintheworstcondition．ThisphenomenonrevealsthattheenvironmentadaptabilityofPnotoginsengisimproved．(2)Therearesignificantdifferencesinsoilnutrientcontentbetweenoldandnewareas，andbetweendifferentplantingfieldsofPnotoginseng．Thesituationisnotuniform，differe

6、ntfertilizationandnutrientmanagementshouldbeperformedaccordingtothespecificneeds．ExceptforthetotalKandavailableFe，Mn，Cu，Zn，theaveragecontentofotherindicatorsareallhigherinthenewfieldsthanintheoldones．ThecontentofN03。-NWasmuchhigherthanNI-14+．Ninsoil．Theinvestigationfoundthatth

7、enutrientenrichmentconditionindifferentplantingsoilsweresufficient，andacidandstrongacidsoilswereclarifiedtobethemajorsoiltypesinP．notoginsengplantingfields．Comparedthesoilofrootlayerwiththatofbackground，pHandexchangeableCaandMnweresimilar,butN03‘-N，totalKandavailableFeweredecl

8、ined，otherindexsweresignificantlyincrease，whichtogetherreveal