Impact of dicyandiamide on emissions of nitrous oxide, nitric oxide and ammonia from agricultural field in the North China Plain

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• 作者：Yizhen Zhou¹ ; ² ; ^{zhouyizhen0519@163.com" class="auth_mail" title="E-mail the corresponding author} ; Yuanyuan Zhang¹ ; Di Tian¹ ; ² ; Yujing Mu¹ ; ^{yjmu@rcees.ac.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Dicyandiamide ; Nitrous oxide ; Nitric oxide ; Ammonia ; North China Plain
• 刊名：Journal of Environmental Sciences
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：40
• 期：Complete
• 页码：20-27
• 全文大小：585 K

文摘

Nitrous oxide (N₂O), nitric oxide (NO) and ammonia (NH₃) 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 N₂O, NO and NH₃ were observed from the normal fertilization treatment (designated as NP) just after fertilization, whereas only N₂O and NH₃ pulse emissions were evident from the nitrification inhibitor treatment (designated as ND). The reduction proportions of N₂O 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 NH₃ emission from the ND treatment was found with a cumulative NH₃ 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).