云南大理烤烟土壤微生物动态变化研究  

Research on dynamic change of tobacco soil microbes in Dali

作　　者：张锦韬[1,2] 郭汉华[1,2] 李丽[3] 段风云[4] 郭春秋[3] 周冀衡[1] 

机构地区：[1]湖南农业大学烟草工程研究中心,长沙410128 [2]湖南中烟工业有限责任公司原料部,长沙410007 [3]湖南文理学院生命科学学院,常德415000 [4]云南省烟草公司大理州公司生产部,大理654600

出　　处：《中国烟草学报》2010年第5期55-59,共5页Acta Tabacaria Sinica

基　　金：湖南中烟工业有限责任公司项目(2006-YC-0002)

摘　　要：为了明确大理烤烟土壤微生物在整个烟草生育期内的变化趋势,利用选择性培养法,对云南大理不同地区植烟土壤根际和非根际土壤细菌、真菌、放线菌进行了测定,并结合土壤养分进行了分析。结果表明:烟株的根际与非根际土壤中,细菌和真菌在团棵期的数量较少,成熟期或采烤后期,细菌数量达到最大值,而真菌则在旺长期或成熟期达到最大值,团棵期至旺长期根际与非根际土壤中真菌数量基本上保持上升趋势;放线菌数量在团棵期较多,且根际土壤略大于非根际土壤;根际和非根际土壤中放线菌数量与土壤中的有机质、速效氮存在显著相关性,尤其是根际土壤中的有机质与放线菌的相关性达极显著水平;根际土壤细菌与速效氮、速效磷、速效钾存在显著的负相关关系,所以土壤中适当的营养对烟株防治细菌性病害有一定益处。Tobacco rhizosphere and non-rhizosphere microbes,s dynamic changes were studied using microbial culture plate at six different tobacco planting regions in Dali in order to identify change trends of soil microbes in flue-cured tobacco growing season.Soil nourishing ingredients were also analyzed.Results showed that little bacteria and fungi in rosette stage were observed in both rhizosphere and non-rhizosphere soil,but the number of bacteria reached peak at maturity or late-curing stage,while fungi reach peak at rapid-growth or maturity stage.The largest number of actinomycosis appeared in rosette-stage,and the number of rhizosphere soil actinomycosis was slightly greater than that of non-rhizosphere soil.The number of actinomycetes quantity was significantly correlated to organic matter and available nitrogen in rhizosphere and non-rhizosphere soil,especially correlation between organic matter and actinomycetes.There was significant negative correlation between rhizosphere soil bacteria and available nitrogen,available phosphorus and potassium.Therefore,it is beneficial to keep proper nutrition in soil for controling bacterial diseases.

关 键 词：根际微生物 非根际微生物 细菌 放线菌 真菌 

分 类 号：S572[农业科学—烟草工业] S154.3[农业科学—作物学]