羊粪和硅藻土对铅胁迫下不同基因型烟草生长发育的影响

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关键词羊粪；硅藻土；烟草；铅胁迫；生长发育中图分类号S572文献标识码A文章编号 0517-6611（2025）16-0160-04doi：10.3969/j.issn.0517-6611.2025.16.035

AbstractTakingthlow-leadagomerationtobacoarietyYunyan87andtelead-enrichedtobacovarityK326asthetestmaterals，using a potted plant method， five treatments were set up，namely CK，T1（lead 500mg/kg ），T2（lead 500mg/kg+ sheep dung 1.33g/kg ）， T3（lead 500mg/kg+ diatomite 30g/kg ），T4（lead 500mg/kg+ sheep dung 1.33g/kg+ diatom soil 30g/kg ）.By measuring agronomic traitsandbiomasidexssuchasplanthight，teticess，ndmaxileafifrtreaments，thtsofsga diatomiteontbaccogrowthanddevelopmentof dferentgenotypesunderadstresswerediscued.Teresultsshowdthat：leadstresan inhibithegrowthoftobacoplants.Aftertransplanting，3Odayslater，theplantheightstemthickness，maximumleafarea，andioassof Yunyan8CKwere1.41，1.48，.63and1.59timesthoseofT1，respectivelyorK326CK，thesevalueswere1.26，1.04，1.1d1.79 timesthoseofT，espectivelypmanureanddatoitecanpromotetegrowthddevelopntoftobaounderleadstrss，withte combinatinofspmaureanddatomitesowigtebsteectAerOdayspostrasplantig，theplntheight，temtckss，aimumleafareandbiomassofYuya87T4were1.07，03，08and1.22tiesthoseofT，espectively.FoK26T4，thsevause 1.02，1.2，1.07and1.19 times thoseof T1，respectively. Therefore，adding anappropriate amount of sheep dung + diatomite in the soil can improvetheresistanceof diferent genotypes of tobacco toleadstressandcontribute tothegrowthand developmentof tobacco. KevWordsSheen dino·Diatomite·Tohaccn·Lead stress·Growth and develonment

随着工矿业的快速发展，农药的过度使用、汽车尾气排放等不利因素，土壤重金属超标问题日益突出。（剩余8058字）