烤烟-粮经作物间作对土壤微生物群落及烟叶品质的影响

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中图分类号：S572；S154.3 文献标识码：A文章编号：1007-5119（2026）01-0050-10

Abstract：Toinvestigate theeffectsof intercroppingflue-curedtobaccowithdiferent grainandeconomiccropsonsoil microecologyandtobaccoleafquality，afieldexperiment wasconductedinthetobaccogrowingareaofJunan CountyLinyiCity ShandongProvice.Withflue-curedtobaccomoocroppingas thecontrol（CK），treeitercroppngtreatmentswereestablsed flue curedtobacointercropped wihsweetpotato（T）peaut （2）andsobean（3）spectively.Changesoficrobialoity structure，chemicalproertieseatiitsandtrogencinggeneepreionosperesoil，aswellasafoe contentacrosstobacogrowthtages ereaaledAdditioalltheftsofdiferentintercoppingmodesontobacceafality includingappearancequalitysensoryqualityanditrisicchmicalcompositionwereexpored.Theresultssowedthatcopared withCK，T3sigicatlyiceasedthaoidexofzspresilacteraatteosetestagechdbeealacteal genera suchas Bacills，andexhbitedthe mostsignificantdierenceincommunitystructurefromCKinPCAanalysisacosal stages.Tlonlyhadacertainimpactat thevigorousgrowthstageandmaturestage，whiletheefectofT2wasrelativelyweak.Inthe T3 treatment， soil total nitrogen and available potassium at the rosette stage increased by 37.6% and 7.5% compared with CK， respectively， showing significant improvements; at the vigorous growth stage， total nitrogen increased by 89.8% and organic matter increased by 18.9% compared with CK. Theabundance ofamo A genes in AOA/AOB increased byup to 45.5% ，and soil enzyme activities atthevigrous growthstageand maturestage wereenhancedIntheT3 treatment，thecontents ofauxinand zeatinriboside in tobacco leaves at the vigorous growth stage increased by 38% and 27% ， respectively; the contents of nitrogen and magnesium in tobacco leaves increased by 12.4% and 9.6% ，respectively，and disease-resistant genes such as PR1 a/c were activated. The appearance qualityandsensoryqualityofupperandmidle tbacoleaves underdiferent itereroppng paters were allimproved， withtheT3treatmentbeingthebest;theT3treatmentsignificantlyincreasedthetotalnitrogenand nicotinecontentsinupperand middle leaves.Inconclusion，the flue-curedtobaco-soybeanintercroppngpaternsignificantlyimproves theyieldandqualityof tobacco leavesbystrengtheningsoil microecologyand nutrientcyclingandcanbepopularizedandapplied inthestudyarea and similar tobacco-growing regions.

Keywords： tobacco; economic crops; intercropping pattern; soil microorganisms; tobacco leaf quality

烟草长期连作会导致土传病害频发，严重影响烟草的产量与品质。（剩余14855字）