高风险除草剂对不同质地烟田土壤中细菌群落结构的影响
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中图分类号：S435.72；S482.4 文献标识码：A文章编号：1007-5119（2025）05-0061-08
Effects of High-risk Herbicides on Bacterial Community Structure in Tobacco Field Soils with Different Textures
LIU Furong1，PENG Liangrui1，LI Caibin²， CHEN Jianguo²， SUN Xiwen²， XIAO Yansong，LI Hongguang'， GAO Ruikang1， ZHAO Tingchun1， SHU Qinglong1， ZHANG Jiguang1*， GAO Junyi2* （1.InstituteofTobacoResearchofChineseAcademyofAgriculturalSciences，Qingdao66101，China;2.BiieBranchofGuizhou Tobacco Company，Bijie 5517oo，GuizhouChina;3.ChenzhouBranchofHunanobaccoCompany，Chenzhou423，Hua， China）
Abstract： Afield experiment wasconductedon two typesof tobacco plantingsoils （sandyloamandclayloam）inBijie，Guizhou， aiming toexploretheeffectsofthreehigh-riskherbicides inprecedingcrops （atrazie，quincloracandnicosulfuron）onthestucture ofsoilbacterialmicrobialcommunities，therebyprovidingscientificbasisforherbicidesaplicationandsoilmicroenvironment conservationintobaccograinrotationfields.Teresultsshowedthataftertheapplicationofthreeherbicidesatconventioaldoses， thebacterialountsinbothtypesofsoilswasibitedandtebacterialcommuitiesinsoilswithdiferenttexturesspoded diferentlytoerbicidersdues.Amongthem，themostevidentibiionouedineatrazinetreatmentofsandyoamndthe nicosulfurontreatmentoflayoamespectively.Inbothtypesofsoiltextures，Actinobacteriawastheominantphylm，but diferentherbicideshadvaryingefectsontherelativeabundanceofbacteriaatthephylumlevel.Athegenuslevelquincoracand atrazinetreatments hadthe greatestefectsontherelativeabundanceofeach genusinsandyandlaysoils，respectively.Meanwhile， herbicidetreatmtdsteactioitlureicatlyuecdlctelmitittle hasasignificant influenceonlyontheChaolindex.Amongthem，insandyloamthenicosulfurontreatment exhibitedthehighest Chaolindex，whilethequincloractreatment exhibitedthe lowest.Inclayloam，onlythenicosulfuron treatmentresulted ina significantlylowerChaolindexcomparedtoother treatments.Inclayloam，thenicosulfurontreatment waslowerthanthatoftheothertreatments.Forthesuitableselectionandapplicatiooferbicidesintobacograinntegratedareasitisadvisabletotaketo consideration the differences of soil texture and their effects on soil micro-ecological responses.
Keywords： tobacco; soil; herbicides; microbial community
我国农田草害面积约占种植面积的 30% ，其中严重草害占 10% 左右。（剩余15216字）
