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1、2014-10,35(5)中国烟草科学ChineseTobaccoScience67重庆植烟土壤有效养分含量及其影响因素12111113江厚龙,张保全,李钠钾,杨超,许安定,王红锋,陈益银,石孝均(1.重庆烟草科学研究所,重庆400715;2.浙江中烟工业有限责任公司,杭州310009;3.西南大学资源环境科学学院,重庆400020)摘要:为了明确重庆烟区土壤速效养分含量的主要影响因子,采用典型相关分析的方法研究了海拔高度、耕层厚度、pH、有机质等对土壤有效养分含量的影响。结果显示,重庆部分烟区土壤酸化严重,速效氮、磷、钾含量丰富,除有效硼、钼和水溶性氯外其他中微量元素含量均为丰富或很丰富。
2、典型相关分析显示,土壤碱解氮、有效铜、有效锌、有效铁、有效硼含量随有机质的增加而增加;土壤速效钾和有效锌含量随海拔升高而增加;土壤pH的降低将导致有效磷、有效铁含量的降低,交换性钙含量的增加;土壤交换性镁等养分含量随耕层厚度的增加而增加。因此,生产上应着重解决土壤酸化、有机质低、耕层浅等问题,并合理布局植烟区域,以提供烟草产质量形成的适宜环境。关键词:重庆;烤烟;土壤;有效养分;典型相关中图分类号:S572.06文章编号:1007-5119(2014)05-0067-07DOI:10.13496/j.issn.1007-5119.2014.05.013SoilAvailableNutrien
3、tContentsandTheirInfluencingFactorsinTobaccoGrowingRegioninChongqing12111JIANGHoulong,ZHANGBaoquan,LINajia,YANGChao,XUAnding,113WANGHongfeng,CHENYiyin,SHIXiaojun(1.ChongqingTobaccoScienceResearchInstitute,Chongqing400715,China;2.ChinaTobaccoZhejiangIndustrialCo.,Ltd.,Hangzhou310009,China;3.Collegeo
4、fResourcesandEnvironment,SouthwestUniversity,Chongqing400020,China)Abstract:InordertoidentifythemaininfluencingfactorsonsoilavailablenutrientcontentsinChongqing,canonicalcorrelationanalysiswasconductedbyusingvariablealtitude,topsoilthickness,pH,organicmatter,andsoilavailablenutrientcontents.Descrip
5、tivestatisticresultsshowedthatthesoilacidificationwassevereinsomeregionsofChongqing.Soilavailablenitrogen,phosphorus,andpotassiumweresufficienttotobaccogrowth.Thetraceelements,exceptforavailableboron,molybdenumandchlorine,werehighorveryhigh.Thecanonicalcorrelationanalysisresultssuggestedthatthecont
6、entofavailablenitrogen,copper,zinc,iron,andBincreasedwithincreasingsoilorganicmatte.ThecontentsofavailablepotassiumandZndecreasedwiththealtitudedecreasing.WiththedecreasingofsoilpH,thecontentofavailablephosphorusandirondecreased,butsoilexchangeablecalciumcontentincreased.Soilexchangeablemagnesiumco
7、ntentincreasedwithincreasingsoiltopsoilthickness.Therefore,theproblemofsoilacidification,lowinorganicmatter,shallowtopsoillayerneedtobesolveinordertoprovidesuitableenvironmentforhigheryieldandqualityofflue-