堆肥过程中低CN对氮素变化影响的研究

20061212-176-·20061212-177-InfluenceofLowC/NontheNitrogenChangingintheCompostingLIQing-wei1,2,LVBing-nan1,LIHui-li1(1.CollegeofMunicipalEnvironmentEngineering,HarbinInstituteofTechnology,Harbin150090,China;2.DepartmentofEnvironmentalScienceandEngineering,JilinInstituteofChemicalTechnology,Jilin132022,ChinaAbstract:Co-compostinginlowC/Nof15,20and25usingpoultrymanure,municipalsolidwasteandcornstrawasrawcompostingmaterialwereconductedtovalidatethepossibilityofcompostinginlowC/N.Nitrogentransformationweredeterminedatdifferentcompostingstages.Duringthecomposting,thetotalnitrogenreducedgraduallywiththecompostingtime.ThelowertheC/Nratio,thehighertotalnitrogenconcentrationfindinthefinal.TheNH4+-Ndecreasedduringthehightemperatureperiod.TheNO3--Nincreasedafterhightemperatureperiod.Theconcentrationofusablenitrogenwasincreasedaftercomposting.ThelowerC/Nratio,thehigherusablenitrogenreceived.Keywords:environmentalengineering;composting;experimentalresearch;poultrylitter;C/Nratio·4·