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1、2016,35(5):999-1005农业环境科学学报2016年5月JournalofAgro-EnvironmentScience师倩云,李雪松,孟延,等.加入不同比例黄土对粪肥碳、氮养分保蓄的影响[J].农业环境科学学报,2016,35(5):999-1005.SHIQian-yun,LIXue-song,MENGYan,etal.Effectsofloessadditionsoncarbonandnitrogenretentioninmanures[J].JournalofAgro-EnvironmentScience,2016,35(5):
2、999-1005.加入不同比例黄土对粪肥碳、氮养分保蓄的影响1,21,21,21,21,2*师倩云,李雪松,孟延,蔡苗,周建斌(1.西北农林科技大学资源环境学院,陕西杨凌712100;2.农业部西北植物营养与农业环境重点实验室,陕西杨凌712100)摘要:采用室内培养方法研究了加入不同比例黄土对猪粪、牛粪两种粪肥培养过程中碳、氮养分保蓄及养分含量的影响。结果表明:加入黄土后猪粪CO2和NH3释放量显著降低,碳、氮保蓄率高于未加黄土处理;加入黄土后牛粪NH3释放量显著降低,氮素保蓄率提高,而碳素保蓄率无明显变化,这与牛粪碳氮比相对较高,水溶性物质含量
3、低,且较难分解的纤维素和半纤维素含量高,相对难以分解有关。随着黄土加入量的增加,土粪中各养分含量逐渐降低,这与加入黄土对粪肥养分的稀释作用有关。可见,加入适量黄土对减少粪肥分解过程中温室气体排放,保蓄粪肥碳、氮养分有重要作用。关键词:黄土;家畜粪肥;碳氮养分;养分损失中图分类号:S153.6文献标志码:A文章编号:1672-2043(2016)05-0999-07doi:10.11654/jaes.2016.05.026EffectsofloessadditionsoncarbonandnitrogenretentioninmanuresSHIQi
4、an-yun1,2,LIXue-song1,2,MENGYan1,2,CAIMiao1,2,ZHOUJian-bin1,2*(1.CollegeofNaturalResourcesandEnvironment,NorthwestAgricultureandForestryUniversity,Yangling712100,China;2.KeyLaboratoryofPlantNutritionandtheAgri-environmentinNorthwestChina,MinistryofAgriculture,Yangling712100,Ch
5、ina)Abstract:WithrapiddevelopmentofanimalproductioninChina,moreandmoremanureshavebeengenerated.Nutrientlossesfromthemanuresresultinsevereenvironmentalproblems.Therefore,howtoconservenutrientsinthemanuresdeservesfurtherstudy.Anincubationexperimentwascarriedouttoexaminetheinflue
6、nceofaddingdifferentratesofloessonCO2andNH3emissionsfromtwomanures(pigma-nure&cowmanure)andretentioncapacitiesofcarbonandnitrogeninthemanures.ResultsshowedthattheadditionofloesssignificantlyreducedtheemissionsofCO2andNH3gasesfrompigmanure,andincreasedCandNretentioninthepigmanu
7、re.Forcowmanure,addingloessreducedtheNH3emissionsduringtheincubation,whereasitdidnotaffectCO2emissions.SuchdifferenteffectsofloessonCO2emis-sionsbetweentwomanureswereduetothedifferencesinmanureproperties.Comparedwithpigmanure,cowmanurewashigherincellu-loseandsemi-celluloseandi
8、nC/Nratios,butlowerinsolublesubstances,thushavingveryslowdeco