小麦-玉米轮作对烟草连作田土壤微生物群落的影响

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关键词小麦；玉米；烟草；轮作；土壤微生物中图分类号S572文献标识码A文章编号 0517-6611（2026）02-0144-04doi：10.3969/j.issn.0517-6611.2026.02.025

AbstractToivestigatethfectsofeatandaizerotatioontesilicrobialcomunityintbacocoiuousoppingfldsadevaluatethenatualremediationcapacityofdiferetootatiosstms，tissudyfousdosoilfotbacultivatedfAferoe yearoftobaccoultivationtheeplotsreplantedwithtobaco，wheatandmaizeuderidentcalconditios.Mcrbialocsombidit bioinformaticsalysisreplodtoomparetheimpactsofeat/aotatioversustbacomoocopingonsoilmicobalcoositionandcommunitydamics.Teresultsevaledthathatandaeotatiossignificantlyaleredontiuouscopingsolmicobalo munities，withstictderesincobalopulatiocturesdepedingtatiopecfallheotatioup hibitedthehighestnumberofuniqufungal（58）andbacterial（2）operatioaltaxonomicunits（OTs）Atthgenuslvel，dominantc bialcommunitisosstraetssadilapositiosutteirelatiedancsridIbacooooinglsa dominated as the primary fungal genus （20.14%） ，whereas wheat and maize rotations shifted the dominant fungi to Humicola（ 18.22% ， 14.92% ），respectivelylpadersityaalysisindicatedtatmaerotatiosigficantlyicreasdfungalandbacterialchess，ileat rotationreducedfungalrhssbuteanedacterial.Bothoatiosstessigiicalecrasedungalandacterialoity diversity.Betadivesityaalysisfurtrdemostratedtateatadmaizerotatiosarkdlyestructuedfungalandacterialomityo positions.Overallotheatndaetatiosimprovdsilobalioentsbacofels，withieotatioigoe pronounced efficacy in reshaping microbial community structures.

Key wordsWheat; Maize;Tobacco;Crop rotation;Soil microorganisms

烟草作为一种重要的经济作物，在全球农业经济中占据举足轻重的地位。（剩余8476字）