摘要
Nitrous oxide（N_2O）, nitric oxide（NO） and ammonia（NH_3） emissions from an agricultural field in the North China Plain were compared for three treatments during a whole maize growing period from 26 June to 11 October, 2012. Compared with the control treatment（without fertilization, designated as CK）, remarkable pulse emissions of N_2O, NO and NH_3 were observed from the normal fertilization treatment（designated as NP） just after fertilization, whereas only N_2O and NH_3 pulse emissions were evident from the nitrification inhibitor treatment（designated as ND）. The reduction proportions of N_2O and NO emissions from the ND treatment compared to those from the NP treatment during the whole maize growing period were 31% and 100%, respectively. A measurable increase of NH_3 emission from the ND treatment was found with a cumulative NH_3 emission of 3.8 ± 1.2 kg N/ha,which was 1.4 times greater than that from the NP treatment（2.7 ± 0.7 kg N/ha）.
Nitrous oxide（N_2O）, nitric oxide（NO） and ammonia（NH_3） emissions from an agricultural field in the North China Plain were compared for three treatments during a whole maize growing period from 26 June to 11 October, 2012. Compared with the control treatment（without fertilization, designated as CK）, remarkable pulse emissions of N_2O, NO and NH_3 were observed from the normal fertilization treatment（designated as NP） just after fertilization, whereas only N_2O and NH_3 pulse emissions were evident from the nitrification inhibitor treatment（designated as ND）. The reduction proportions of N_2O and NO emissions from the ND treatment compared to those from the NP treatment during the whole maize growing period were 31% and 100%, respectively. A measurable increase of NH_3 emission from the ND treatment was found with a cumulative NH_3 emission of 3.8 ± 1.2 kg N/ha,which was 1.4 times greater than that from the NP treatment（2.7 ± 0.7 kg N/ha）.
基金
supported by the National Key Technology R&D Program of China (No.2013BAD11B03-3)
the Strategic Priority Research Program of the Chinese Academy of Sciences (No.XDB05010100)
the National Natural Science Foundation of China (Nos.21477142 and 21177140)
