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1、農(nóng)業(yè)資源與環(huán)境學(xué)報(bào)JournalofAgriculturalResourcesandEnvironment2016年1月·第33卷·第1期:23-28January2016·Vol.33·No.1:23-28銨態(tài)氮源和碳源對土壤N2O、CO2釋放的影響112311*王琳,周曉麗,馬銀麗,巨曉棠,吉艷芝,張麗娟(1.河北農(nóng)業(yè)大學(xué)資源與環(huán)境科學(xué)學(xué)院,河北保定071000;2.河北香河環(huán)保產(chǎn)業(yè)園區(qū),河北廊坊065400;3.中國農(nóng)業(yè)大學(xué)資源與環(huán)境科學(xué)學(xué)院,北京100193)摘要:在田間持水量WFPS為70%、溫度為20℃的條件下,通過室內(nèi)靜態(tài)培養(yǎng)方
2、法研究銨態(tài)氮源與不同碳源結(jié)合,對華北平原典型小麥-玉米輪作體系土壤N2O、CO2釋放的影響。其中,碳源種類分別為葡萄糖、果膠、淀粉、纖維素、木質(zhì)素和秸稈。結(jié)果表明添加葡萄糖和果膠有效促進(jìn)了土壤N-1-1-12O的釋放,并在第1d達(dá)到最大值,分別為4039.85μgN2O-N·kg·d和2533.44μgN2O-N·kg·d-1;添加纖維素和只施秸稈處理降低了N2O釋放。施入碳源增加了CO2釋放,順序?yàn)槔w維素>淀粉>葡萄糖>果膠>秸稈>木質(zhì)素。培養(yǎng)結(jié)束后土壤中銨態(tài)氮幾乎消耗完全,除添加葡萄糖處理外,其他施碳土壤的硝態(tài)氮含量均有所增加。在培養(yǎng)前3
3、d,土壤NH+4和NO-3總含量與N2O釋放量顯著相關(guān)。關(guān)鍵詞:華北地區(qū);銨態(tài)氮源;碳源;N2O;CO2中圖分類號(hào):S153.6文獻(xiàn)標(biāo)志碼:A文章編號(hào):2095-6819(2016)01-0023-06doi:10.13254/j.jare.2015.0181引用格式:王琳,周曉麗,馬銀麗,等.銨態(tài)氮源和碳源對土壤N2O、CO2釋放的影響[J].農(nóng)業(yè)資源與環(huán)境學(xué)報(bào),2016,33(1):23-28.WANGLin,ZHOUXiao-li,MAYin-li,etal.EffectofAmmoniumNitrogenSourceandCarbon
4、SourceontheCO2andN2OEmissionsofSoil[J].JournalofAgriculturalResourcesandEnvironment,2016,33(1):23-28.EffectofAmmoniumNitrogenSourceandCarbonSourceontheCO2andN2OEmissionsofSoilWANGLin1,ZHOUXiao-li1,MAYin-li2,JUXiao-tang3,JIYan-zhi1,ZHANGLi-juan1*(1.CollegeofResourcesandEnvir
5、onmentalSciences,AgriculturalUniversityofHebei,Baoding071000,China;2.EnvironmentalIndustrialParkofXianghe,Langfang065400,China;3.CollegeofResourcesandEnvironmentalSciences,ChinaAgriculturalUniversity,Beijing100193,China)Abstract:Tostudytheeffectofammoniumnitrogensourcecombi
6、nedwithdifferentcarbonsources,whichincludedglucose,pectin,starch,cellulose,ligninandstraw,onN2OandCO2emissionsofsoilinthetypicalwheat-maizerotationsystemintypicalNorthChinaplain,theexperimentwascarriedoutthroughthestaticincubation-gaschromatographmethod,withtheWFPSof70%andt
7、hetemperatureof20℃.TheresultsshowedthattheadditionofglucoseandpectincouldeffectivelypromoteN2Oemissions,withthepeakvaluesof4039.85μgN2O-N·kg·d-1and2533.44μgNO-N·kg·d-1onthefirstday,respectively;whilethecelluloseandstrawreducedNOemissions.Thecarbon22sourceincreasedCO2emissio
8、ns,theorderwascellulose>starch>glucose>pectin>straw>lignin.Theammoniumnitrogeninso