生草栽培对烟田土壤理化性质及真菌群落的影响

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中图分类号：S572；S153；S154.3 文献标识码：A文章编号：1007-5119（2026）01-0039-11

Abstract： Inordertoexploretheefectsof grass cultivationonsoilphyicochemicalpropertiesandfungalcommunitiesintobacco fields，Astragalussinicus，TrifoliumrepensandTrifoliumpratense wereusedasmaterialstodeterminethechangesofsoil physicochemical propertiesintobaccofieldsaftergrascultivationHigh-throughputsequencing techologywasusedtodetectthe compositionanddiversityofsoilfungalcommunitiesintobaccofields，andtheagronomictraitsoftobaccowereinvestigatedatthe budding stageoftbacco.Theresultsshowed thatthemainagronomictraitsoftbaccotreatedwithgrasscutivation werebettr than thoseof naturalgrasscultivation.Compared withartificial weeding，grasscultivation had nosignificant eectonthegrowthof tobacco，whileitireasedilHanicmatercotetinetobaccofelddeancdtesupplyofsilogen，o and potassium.Ascomycota，BasidiomycotaadMortierellomycotawerethemainspeciesofsoilfungalcommunitystructureThe results of Alphadiversityanalysisshowedthat grassspecies wasanimportantfactorafectingAphadiversity.Themaineffectof grassdensitywasnotsignificant，buttheinteraction efectbetween grass speciesand densitywassignificant.The Chaolindex， Shannon index and Simpson index of soil fungal community were significantly reduced by 112.5 and 75kg/ha treatments compared withartificial wedingtreatment.TheresultsofEfSeanalysisandNMDSanalysisshowedthat tere weresignificantdiferences in fungalcommunityompositionbetweengrasscultivatioandartifiial weding.Thegrasscultivatiotreatmet increasedtherelative abundanceofHumicolaandreducedtherelativeabundanceofharmfulfungisuchasFusariumandAspergillusintesoil.Coelation analysissowedthatthsoilorganicmattrcontentwassignificantlyegativelyoelatedwiththeelativeabundanceofAspergilus， andthetotalpotassiumcontent wassignificantly negativelycorelated withFusarium. Itcanbe seenthattobacco fieldgras cultivationcanimprovethesoil physicochemicalpropertiesandreducetherelativeabundanceofsomeharmful fungi，which isof great significance to the health of tobacco planting soil.

Keywords： tobacco; grass cultivation; soil physical and chemical properties; fungal community

生草栽培是当前田间杂草的有效防控途径之一。（剩余17015字）