Nitrous oxide emissions from Chinese maize-wheat rotation systems: A 3-year field measurement

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地表生过程与生态调控重点实验室

	Nitrous oxide emissions from Chinese maize-wheat rotation systems: A 3-year field measurement
	Cai, Yanjiang1,3 ; Ding, Weixin 1; Luo, Jiafa 2
刊名	ATMOSPHERIC ENVIRONMENT
	2013-02-01
卷号	65 页码:112-122
关键词	Emission factor Fertilizer type Interannual variation Irrigation Long-term experiment N2O
ISSN号	1352-2310
通讯作者	Ding, WX
英文摘要	Nitrous oxide (N2O) fluxes were measured over a 3-year period (2004-2007) in a long-term experimental field. The objectives of the study were to evaluate the interannual variation of N2O emissions from a maize-wheat rotation, under different fertilizer regimes and to determine the key controlling factors. The study involved four treatments: compost (OM), half compost N plus half inorganic fertilizer-N (HOM), inorganic fertilizer-N (NPK), and control (CK) where no N application. The mean annual N2O emission over a 3-year period was 030 +/- 0.11 kg N2O-N ha(-1) in the CK treatment, but increased to 1.61 +/- 0.10 kg N2O-N ha(-1) in the HOM treatment, 2.13 +/- 0.15 kg N2O-N ha(-1) in the OM treatment, and 2.76 +/- 0.19 kg N2O-N ha(-1) in the NPK treatment. Differences were significant among treatments. The N2O emission factors of the applied OM, NPK and HUM were 0.61 +/- 0.02, 0.82 +/- 0.10 and 0.44 +/- 0.04%, respectively, at a rate of 300 kg N ha(-1) year(-1), indicating that the combined application of compost with inorganic fertilizer significantly reduced N2O emission. Over a maize-wheat rotation year, more than 65% of the annual N2O emission occurred during the maize growing season. There was a large interannual variation in N2O emission in all treatments, albeit not significant either during the maize growing season or at an inter-year scale. This interannual variation was mainly attributable to differences in soil moisture after basal fertilizer application, and irrigation and/or heavy rainfall events immediately following basal fertilization could induce more N2O production than pre-irrigation before plowing. The HOM treatment had higher N fertilizer use efficiency and lowest yield-scaled N2O emissions compared with the OM and NPK treatments. We therefore argue that the combined application of half compost N plus half fertilizer-N will mitigate N2O emissions from soils in the North China plain. (C) 2012 Elsevier Ltd. All rights reserved.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]	Environmental Sciences ; Meteorology & Atmospheric Sciences
研究领域[WOS]	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
关键词[WOS]	DISSOLVED ORGANIC-CARBON ; INDO-GANGETIC PLAINS ; NITRIFICATION INHIBITORS ; UPLAND FIELD ; N2O FLUXES ; SOILS ; FERTILIZER ; MANURE ; NO ; MITIGATION
收录类别	SCI
语种	英语
WOS记录号	WOS:000313840500012
公开日期	2013-06-24
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/5458]
专题	成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
作者单位	1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Jiangsu, Peoples R China 2.AgResearch, Land & Environm, Hamilton 3240, New Zealand 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Environm Evolvement & Regulat, Chengdu 610041, Peoples R China
推荐引用方式 GB/T 7714	Cai, Yanjiang,Ding, Weixin,Luo, Jiafa. Nitrous oxide emissions from Chinese maize-wheat rotation systems: A 3-year field measurement[J]. ATMOSPHERIC ENVIRONMENT,2013,65:112-122.
APA	Cai, Yanjiang,Ding, Weixin,&Luo, Jiafa.(2013).Nitrous oxide emissions from Chinese maize-wheat rotation systems: A 3-year field measurement.ATMOSPHERIC ENVIRONMENT,65,112-122.
MLA	Cai, Yanjiang,et al."Nitrous oxide emissions from Chinese maize-wheat rotation systems: A 3-year field measurement".ATMOSPHERIC ENVIRONMENT 65(2013):112-122.