长期施用秸秆及有机肥对辽宁北部棕壤土壤有效养分的影响-论文.pdf

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1、沈阳农业大学学报，2013—12，44(6)：812-815JournalofShenyangAgricultural!tyQ二(鱼)；墨二蔓!长期施用秸秆及有机肥对辽宁北部棕壤土壤有效养分的影响闫洪奎，胡博，高立祯(沈阳农业大学农学院，沈阳110161)摘要：采用5年定位试验，研究秸秆还田、有机肥对辽宁北部棕壤土壤速效养分及有机质含量的影响。结果表明：与2005年相比，有机肥、秸秆还田处理增加了土壤有效氮和速效磷含量，速效钾含量有增有降，有机质含量持平或下降；增加有机肥数量可提高土壤有效氮、速效磷、速效钾含量，增加秸秆还田数量可提高土壤速效钾含量；施用有机

2、肥的土壤有效氮、速效磷、速效钾含量比秸秆还田处理分别增加了7．06％～13．77％、7．48％～7．99％和37．65％～45．35％；全量秸秆还田、全量有机肥处理的土壤有机质含量相近，半量秸秆还田和半量有机肥的土壤有机质含量高于全量处理，平均分别增加了24．45％和16．53％，半量秸秆还田和半量有机肥配合比单独施用平均增加33．87％。关键词：中低产田；棕壤；秸秆还田；有机肥；有效养分DOI：10．3969~．issn．1000-1700．2013．06．017中图分类号：S158．2；St41文献标识码：A文章编号：1000—1700(2013)06—

3、0812—04EfectsonAvailableNutrientsofBrownSoilinNorthernLiaoningunderLong-termUseofStrawandOrganicFertilizerYANHong-kui，HUBo，GAOLi-zhen(CollegeofAgronmy，ShenyangAculturalUniversity，Shenyang110161，China)Abstract：EfectsofstrawandorganicfertilizerappliedintothebrownsoilinnorthernLiaonin

4、gonsoilavailablenutrientandorganicmattercontentswereinvestigatedina5-yearlocatedexperiment．Theresultsshowedthathighersoilavailablenitrogenandphosphorouscontents，higherorlowersoilavailablepotassiumcontent，andinvariantorreducedorganicmattercontentswereabservedcomparedwiththevaluesin2

5、005．Withincreasingorganicfertilizer，thesoilavailablenitrogen，phosphorousandpotassiumcontentswereimproved．Thesoilavailablepotassiumcontentwasenhancedwithincreasingstrawamountapplied．Soilavailablenitrogen。phosphorousandpotassiumwiththeorganicfertilizerapplicationtreatmentwereincrease

6、dby7．06％-13．77％，7．48％一7．99％and37．65％~45．35％respectivelycomparedtothestrawapplicationtreatment．Soilorganicmattercontentwithfull—amountstrawapplicationequaledthatwithfull—amountorganicfertilizerapplication．Whilesoilorganicmattercontentwithhalf-amountstrawandorganicfertilizerapplicati

7、onwashigherthanthatwithfull-amountapplicationseparatelyby24．45％and16．53％ontheaverage．Withcombininghalf-amountstrawapplicationandhalf-amountorganicfertilizerapplicationthesoilorganicmatterwas33．89％higherthanthatwithsingletreatment．Keywords：mediumandlowyieldfield；brownsoil；strawretur

8、ning；farmyardmanure；availa