干旱区生态环境知识资源中心(Arid): Enhancing resource use efficiency of alfalfa with appropriate irrigation and fertilization strategy mitigate greenhouse gases emissions in the arid region of Northwest China

Arid

DOI	10.1016/j.fcr.2022.108715
	Enhancing resource use efficiency of alfalfa with appropriate irrigation and fertilization strategy mitigate greenhouse gases emissions in the arid region of Northwest China
	Kamran, Muhammad; Yan, Zhengang; Chang, Shenghua; Chen, Xianjiang; Ahmad, Irshad; Jia, Qianmin; Ghani, Muhammad Usman; Nouman, Muhammad; Hou, Fujiang
通讯作者	Hou, FJ
来源期刊	FIELD CROPS RESEARCH
ISSN	0378-4290
EISSN	1872-6852
出版年	2022
卷号	289
英文摘要	Context: With the increasing global warming concerns, appropriate agronomic practices for improving crop yields while reducing greenhouse gases (GHGs) emissions are essential for sustainable agricultural production. However, little information is available if these benefits can be achieved simultaneously in arid pastoral agriculture systems with irrigation and nitrogen (N) management. Research question: We assumed that the local practiced irrigation (600 mm) and N (300 kg ha(-1)) applications for spring wheat in the arid regions of Northwest China are excessive, and optimizing irrigation-N rates would improve the resource use efficiency of alfalfa and reduce GHGs emissions. Methods: A two-year field study (2015-2016) was conducted to investigate the effects of irrigation regimes (IL, 300 mm; IM, 450 mm; and I-H, 600 mm) and N application rates (F-0, 0; F-L, 150; F-M, 225; and F-H, 300 kg ha(-1)) on forage yield, resource use efficiency, and GHGs emissions from alfalfa fields. The GHGs emissions during alfalfa growing seasons were assessed by analyzing gas samples using the static chamber-gas chromatography method. Results: High irrigation and N application (IHFH) was associated with elevated GHGs emissions, global warming potential, and greenhouse gas intensity, but lower irrigation water productivity (IWP) and partial factor productivity of N (PFPN). Reducing the irrigation and N rates decreased the GHGs emissions but differently affected alfalfa yield and resource use efficiencies. Among all the treatments, IMFL and IHFL resulted in the highest alfalfa yields, IWP, and PFPN. However, IMFL showed a good trade-off between yield benefits and environmental performance manifested by lower GHGs emissions, GWP, and GHGI. The IMFL reduced the cumulative emissions of nitrous oxide by 67.83% and 67.16%, carbon dioxide by 31.05% and 34.60%, GWP by 61.72% and 70.40%, and GHGI by 74.37% and 79.78%, while increased alfalfa yield by 49.24% and 46.45%, IWP by 99.05% and 94.97%, and PFPN by 198.44% and 192.90% compared to IHFH. Regardless of all the treatments, the alfalfa field acted as a CH4 sink during both crop-growing seasons. Conclusions: Our results suggest that the application of 450 mm irrigation and 150 kg N ha(-1) could be used as an appropriate management strategy for enhancing resource use efficiencies and mitigating GHGs emissions, GHGI, and GWP from alfalfa fields. Significance: The findings can provide an opportunity for greenhouse gas mitigation without alfalfa forage yield reduction following the proper irrigation and fertilization regimes in the arid region of northwest China and areas with similar agro-climatic conditions.
英文关键词	Greenhouse gases emissions Yield-scaled emissions Nitrogen use efficiency Nitrogen cycling Supplemental irrigation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000891396400006
WOS关键词	NITROGEN USE EFFICIENCY ; WINTER-WHEAT FIELD ; SOIL CO2 EMISSIONS ; CH4 OXIDATION ; N2O EMISSIONS ; METHANE OXIDATION ; OXIDE EMISSIONS ; CROPPING SYSTEM ; YIELD ; MANAGEMENT
WOS类目	Agronomy
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392589
推荐引用方式 GB/T 7714	Kamran, Muhammad,Yan, Zhengang,Chang, Shenghua,et al. Enhancing resource use efficiency of alfalfa with appropriate irrigation and fertilization strategy mitigate greenhouse gases emissions in the arid region of Northwest China[J],2022,289.
APA	Kamran, Muhammad.,Yan, Zhengang.,Chang, Shenghua.,Chen, Xianjiang.,Ahmad, Irshad.,...&Hou, Fujiang.(2022).Enhancing resource use efficiency of alfalfa with appropriate irrigation and fertilization strategy mitigate greenhouse gases emissions in the arid region of Northwest China.FIELD CROPS RESEARCH,289.
MLA	Kamran, Muhammad,et al."Enhancing resource use efficiency of alfalfa with appropriate irrigation and fertilization strategy mitigate greenhouse gases emissions in the arid region of Northwest China".FIELD CROPS RESEARCH 289(2022).