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中文摘要：
以生活垃圾填埋场渗滤液和粘壤土为实验材料,研究了不同的渗滤液灌溉量、灌溉后土壤中矿物氮含量和反硝化酶活性对粘壤土N2O释放的影响.结果表明：渗滤液灌溉可促进土壤中N2O的释放,投加渗滤液的土壤样品N2O的释放通量是投加（NH4）2SO4溶液的2-3倍.粘壤土含水率为25%并且保持氧含量的条件下,渗滤液灌溉土壤后,土壤中N2O主要在硝化过程中产生.相关性统计分析表明：N2O释放通量与NO2^-和渗滤液灌溉量呈显著正相关（分别为r=0.928,p〈0.001;r=0.425,p〈0.05）,而与土壤中NO3^-和反硝化酶活性无显著相关性.
英文摘要：
The factors affecting nitrous oxide emission from clay loam soil were analyzed by evaluating leachate irrigation, mineral nitrogen and denitrifiers activity. The results indicated that leachate addition could promote N2O emission from clay loam soil. Compared to the soil samples added with ammonium sulfate, the N2O emission of the samples added with leachate was 2-3 times higher. N2O was predominantly generated during nitrification with water content 25% and sufficient oxygen. The correlation analysis indicated that N2O emission was significant correlated with NO2^- concentration and the amount of leachate addition （ r =0. 928, p 〈0. 001 ; r = 0. 425, p 〈 0.05, respectively） . There was no significant relationship between the amounts of N2O emission and NO3^-concentration in the soil.
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