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时间:2020-03-25
《猪场废水灌溉对潮土交换性盐基离子含量的影响.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、农业环境科学学报2010,29(3):510—514JournalofAgro—EnvironmentScience猪场废水灌溉对潮土交换性盐基离子含量的影响白丽静,王风,张克强,黄治平(农业部环境保护科研监测所,天津300191)摘要:通过田间小区试验,研究了猪场废水处理工艺中3个阶段出水(原水、厌氧水和仿生态塘水)与地下水1:5混水和厌氧水不同灌溉量灌溉对土壤中交换性盐基离子含量的影响。结果表明,厌氧水不同灌溉量对土壤中交换性钾含量影响显著,与对照相比,厌氧水高量灌溉、中量灌溉、低量灌溉分别使0~20cm和20~40cln土层中交换性钾含量提高了291.76%、152.70%、83
2、.11%和116.10%、74.29%、49.85%;对交换性钠、钙、镁含量有一定影响,但处理间未达到显著水平。不同阶段出水混水灌溉对交换性钾、钠、钙、镁的含量处理间未达到显著水平,但土壤中交换性钾和钠含量在0~20cln和20~40cln和处理间呈现了相反的变化趋势,验证了竞争吸附点位理论。关键词:猪场废水;灌溉;潮土;交换性盐基离子中图分类号:X53文献标志码:A文章编号:1672—2043(2010)03—0510—05EffectsofSwineWastewaterIrrigationonContentsofExchangeableCationsinAquaticSoilBAI
3、Li-jing,WANGFeng,ZHANGKe—qiang,HUANGZhi—ping(InstituteofAgro—EnvironmentalProtection,MinistryofAgricultureofChina,Tianjin300191,China)Abstract:Swinewastewaterisoneofthemainwastewaterresourcesofirrigation,butusingthiswaterforirrigationdirectlymaybeharmfultoplantsandbfngpotentialrisktoenvironment.
4、Topromotethereasonableirrigationstrategyofswinewastewater,fieldexperimentswerecon—ductedtoinvestigatetheeffectsofdifferentquotaofanaerobicwastewateranddifferenttreatmentstagesofswinewastewaterirrigationoncon—tentsofexchangeablekalium,sodium,calcium,magnesium.Theresultsshowedthat:(1)thequotaofana
5、erobicwastewaterhassignificantel--feetonthecontentofexchangeablekalium,contrastingwithcontrol,thecontentofexchangeablekaliumunderhigh-quotairrigation,medi-um—quotairrigation,low—quotairrigationtreatmentswereenhancedby291.76%,152.70%,83.11%and116.10%,74.29%,49.85%in0-20cmand20-40emsoillayers,resp
6、ectively;whilethecontentsofexchangeablesodium,calciumandmagnesiumwerenotsuchsignificant;(2)theswinewastewaterofdifferenttreatmentstageshaslittleeffectoncontentsofexchangeablekalium,sodium,calcium,magnesium;(3)thecontentsofexchangeablekaliumandsodiumin0-20cmand20-40emsoillayersshowoppositetendenc
7、y,whichverifythetheoryofcom-petifiveadsorptionofpoints.Keywords:swinewastewater;irrigation;aquaticsoil;exchangeablecation我国北方地区水资源十分匮乏,农业灌溉缺水日趋严重,废水成为农业灌溉水源的重要组成。废水灌溉一方面可为植物生长提供重要的养分,促进作物的生长和产量的提高‘11;另一方面也可能引起一系列的收稿日期:2009—0
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