中文摘要：

在水分含量为80％WHC条件下，培养实验研究吉林省公主岭市国家黑土肥力与肥料效益长期定位监测基地土壤氧化亚氮（N2O）的排放特征，以考查不同施肥制度下黑土氧化亚氮排放差异。培养6d的结果表明，土壤N2O排放量随有机肥施入量的增加而增加，MOCK（耕作但不施任何肥）、M1CK（耕作并施中量有机肥）和M2CK（耕作并施高量有机肥）处理N2O—N排放量分别为5．64、23．3和213μg·kg^-1。化肥配施降低N2O排放量，MON（耕作并施氮肥）、MONP（耕作并配施氮磷肥）和MONPK（耕作并配施氮磷钾肥）处理N2O-N排放量分别为85.0、9.71和7.29μg·kg^-1。氮肥与有机肥配施使N2O的排放量显著增加，M2N（耕作并配施高量有机肥和氮肥）的N2O—N排放量高达316μg·kg^-1。氮磷肥和氮磷钾肥配施对土壤N2O的排放影响因有机肥施用量的不同而异。氮磷钾肥与高量有机肥配施显著减少N2O-N排放，其排放量仅为117μg·kg^-1。培养结束后，土壤硝态氮含量明显减少，反硝化作用是土壤N2O产生的主要过程。

英文摘要：

A 6-day laboratory incubation with soil water content of 80% water holding capacity was conducted to study nitrous oxide （N20） emission from a different long-term fertilization experiment zone in Gongzhuling city, Jilin province. The results showed that N20 emission increased with the increase of the organic manure application, and cumulative NEO-N emission of cultivation with no fertilizer （MOCK）, cultivation with moderate amount of organic manure （M1CK） and cultivation with high amount of organic manure （M2CK） was 5.64, 23.3 and 213 μg·kg^-1, respectively. N20 emission decreased as the combined chemical fertilizer applied, and cumulative N20-N emission of cultivation with nitrogen fertilizer application （MON）, cultivation with combined nitrogen-phosphorus fertilizer application （MONP） and cultivation with combined nitrogen-phosphorus-potassium fertilizer application （MONPK） was 85.0, 9.71 and 7.29 μg·kg^-1, respectively. Combined N fertilizer and organic manure significandy increased N20 emission, and cumulative N20-N emission of cultivation with nitrogen and high amount of organic manure fertilization （M2N） was up to 316 μg·kg^-1. Effect of combined N-P and combined N-P-K on N20 emission was different from the application amount of organic manure. Combined N-P-K and high amount of organic manure fertilization （M2NPK） decreased N20-N emission significantly, and the cumulative N20-N emission was up to 117 μg·kg^-l. The amount of soil NO3- was significantly decreased after the 6-day incubation, denitrification was the main process of N20 production.