Nitrous oxide emissions from irrigated and fertilized spring maize in semi-arid northern China

doi:10.1016/j.agee.2011.03.002

	Nitrous oxide emissions from irrigated and fertilized spring maize in semi-arid northern China
	Liu, Y. T.1,2; Li, Y. E.1,2; Wan, Y. F.1,2; Chen, D. L.3; Gao, Q. Z.1,2; Li, Y.4; Qin, X. B.1,2
刊名	AGRICULTURE ECOSYSTEMS & ENVIRONMENT
	2011
卷号	141 期号:3-4 页码:287-295
关键词	Automated measurement Nitrous oxide emissions Nitrous oxide uptake Emission factor Fertilizer rate
ISSN号	0167-8809
DOI	10.1016/j.agee.2011.03.002
通讯作者	Liu, Y. T.
英文摘要	As maize requires a high input of fertilizer nitrogen, it is likely to be an important source of nitrous oxide (N2O). Detailed information on N2O emissions over long time periods, and management practices that aim to reduce N2O emissions from spring maize fields in China is lacking. Consequently we measured the emissions of N2O from a spring maize field continuously from 2007 to 2009 at Yuci, Shanxi Province, China using newly developed automated chambers and explored strategies to reduce N2O emissions. The results showed that the Optimal fertilizer treatment (120 kg N ha(-1) y(-1)) produced the same yield of grain as the Traditional fertilizer treatment (330 kg N ha(-1) y(-1)), and significantly reduced N2O emissions by 48%. Topdressing with urea was the main source of N2O, which on average accounted for 58% of the total N2O emissions each year. Uptake of N2O occurred during the late stage of maize growth when soil mineral N content was less than 46.4 mg N kg(-1) soil. The N2O emission factors were lower than the IPCC default value. Nitrous oxide emissions could also be reduced if farmers did not apply fertilizer N during periods of heavy rainfall and did not irrigate immediately after fertilization. (C) 2011 Elsevier B.V. All rights reserved.
学科主题	Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences ; AGRICULTURE, MULTIDISCIPLINARY ; ECOLOGY ; ENVIRONMENTAL SCIENCES
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000292534800004
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/19926]
专题	农业环境与可持续发展研究所
作者单位	1.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China 2.Minist Agr, Key Lab Agroenvironm & Climate Change, Beijing 100081, Peoples R China 3.Univ Melbourne, Melbourne Sch Land & Environm, Dept Resource Management & Geog, Melbourne, Vic 3010, Australia 4.Chinese Acad Sci, Key Lab Agroecol Proc Subtrop Reg, Inst Subtrop Agr, Hunan 410125, Peoples R China
推荐引用方式 GB/T 7714	Liu, Y. T.,Li, Y. E.,Wan, Y. F.,et al. Nitrous oxide emissions from irrigated and fertilized spring maize in semi-arid northern China[J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT,2011,141(3-4):287-295.
APA	Liu, Y. T..,Li, Y. E..,Wan, Y. F..,Chen, D. L..,Gao, Q. Z..,...&Qin, X. B..(2011).Nitrous oxide emissions from irrigated and fertilized spring maize in semi-arid northern China.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,141(3-4),287-295.
MLA	Liu, Y. T.,et al."Nitrous oxide emissions from irrigated and fertilized spring maize in semi-arid northern China".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 141.3-4(2011):287-295.