干旱区生态环境知识资源中心(Arid): Enhanced efficiency nitrogen fertilizers were not effective in reducing N2O emissions from a drip-irrigated cotton field in arid region of Northwestern China

Arid

DOI	10.1016/j.scitotenv.2020.141543
	Enhanced efficiency nitrogen fertilizers were not effective in reducing N2O emissions from a drip-irrigated cotton field in arid region of Northwestern China
	Li, Yanyan; Gao, Xiaopeng; Tenuta, Mario; Gui, Dongwei; Li, Xiangyi; Xue, Wei; Zeng, Fanjiang
通讯作者	Gao, XP
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2020
卷号	748
英文摘要	Drip irrigation is an effectivewater-saving strategy for crop production in arid regions. However, limited information is available on how fertilizer nitrogen (N) management affects soil nitrous oxide (N2O) emission under drip irrigation. A two-year (2017-2018) field experiment was conducted in arid northwestern China to test management options of fertilizer N to reduce N2O emission and improve NUE of cotton (Gossypium hirsutum L.) under drip irrigation. Treatment included a factorial design of rate (120, 240 kg N ha(-1)) and source of N fertilizer (Urea, polymer-coated urea-ESN, stabilized urea with nitrification and urease inhibitors-SuperU), and an unfertilized Control. Ureawas split-applied with irrigation water (fertigation) whereas ESN and SuperU were all sidebanded at pre-plant. Crop yield and N uptake, soil mineral N concentrations, soil temperature andmoisture, and N2O fluxes were determined. Across the two growing seasons, a single pre-plant application with ESN or SuperU significantly increased growing season cumulative N2O emissions (Sigma N2O) by 29-47% and applied N-scaled emission factor (EF) by 57-83% compared to urea fertigation, irrespectively of application rate. In contrast, cotton yield, agronomic NUE, apparent N recovery (ANR), and yield-based N2O emission intensity (EI) were not affected by N source. Reducing N rate from240 to 120 kg N ha(-1) significantly decreased Sigma N2O by 35% in 2017 and 36% in 2018 while simultaneously reduced cotton yield in both years. The increased N2O emissions with ESN and SuperU were attributed to greater availability of inorganic N resulted from one-time application at pre-plant and higher soil temperature. We concluded that fertigationwith urea at the recommended rate is the best option to ensure agronomic productively and agronomic NUE with minimal risk of N2O emissions. In contrast, the benefit of enhanced efficiency N fertilizer is limited and recommendation on using of these products is challenging for arid croplands under drip irrigation. (c) 2020 Elsevier B.V. All rights reserved.
英文关键词	Drip irrigation Emission factor Enhanced efficiency fertilizers Fertigation N2O emission
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000581049800105
WOS关键词	POLYMER-COATED UREA ; GREENHOUSE-GAS EMISSIONS ; OXIDE EMISSIONS ; CROPPING SYSTEMS ; NO EMISSIONS ; NITRIFICATION INHIBITORS ; FERTIGATED COTTON ; WINTER-WHEAT ; SOIL ; MANAGEMENT
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327022
作者单位	[Li, Yanyan; Gao, Xiaopeng; Gui, Dongwei; Li, Xiangyi; Xue, Wei; Zeng, Fanjiang] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China; [Li, Yanyan; Gui, Dongwei; Li, Xiangyi; Xue, Wei; Zeng, Fanjiang] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang Key Lab Desert Plant Roots Ecol & Vegeta, Cele 848300, Peoples R China; [Li, Yanyan; Gui, Dongwei; Li, Xiangyi; Xue, Wei; Zeng, Fanjiang] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Gao, Xiaopeng] Univ Manitoba, Dept Soil Sci, Winnipeg, MB R3T 2N2, Canada; [Li, Yanyan; Gui, Dongwei; Li, Xiangyi; Xue, Wei; Zeng, Fanjiang] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Cele Natl Stn Observat & Res Desert Grassland Eco, Cele 848300, Peoples R China
推荐引用方式 GB/T 7714	Li, Yanyan,Gao, Xiaopeng,Tenuta, Mario,et al. Enhanced efficiency nitrogen fertilizers were not effective in reducing N2O emissions from a drip-irrigated cotton field in arid region of Northwestern China[J]. 中国科学院新疆生态与地理研究所,2020,748.
APA	Li, Yanyan.,Gao, Xiaopeng.,Tenuta, Mario.,Gui, Dongwei.,Li, Xiangyi.,...&Zeng, Fanjiang.(2020).Enhanced efficiency nitrogen fertilizers were not effective in reducing N2O emissions from a drip-irrigated cotton field in arid region of Northwestern China.SCIENCE OF THE TOTAL ENVIRONMENT,748.
MLA	Li, Yanyan,et al."Enhanced efficiency nitrogen fertilizers were not effective in reducing N2O emissions from a drip-irrigated cotton field in arid region of Northwestern China".SCIENCE OF THE TOTAL ENVIRONMENT 748(2020).