干旱区生态环境知识资源中心(Arid): Driving soil N2O emissions under nitrogen application by soil environmental factor changes in garlic-maize rotation systems

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DOI	10.1016/j.eja.2024.127167
	Driving soil N2O emissions under nitrogen application by soil environmental factor changes in garlic-maize rotation systems
	Liu, Dan; Ma, Chi; Liu, Yang; Mo, Qin; Lin, Wei; Li, Wenjing; Li, Hui; Yang, Baoping; Ding, Ruixia; Shayakhmetoya, Altyn; Zhang, Xudong; Han, Qingfang
通讯作者	Zhang, XD ; Han, QF
来源期刊	EUROPEAN JOURNAL OF AGRONOMY
ISSN	1161-0301
EISSN	1873-7331
出版年	2024
卷号	156
英文摘要	In multiple cropping systems, optimizing nitrogen (N) input can mitigate N2O emissions and sustain agricultural productivity in frequently disturbed environments. Nonetheless, there remains a notable gap in understanding the role of soil environment in the N application process. Hence, a three-annual field experiment spanning six growth seasons from 2019 to 2022 was conducted to assess the impacts of surface water filled-pore space (WFPS), NO3-- N, and meteorological factors under combined N applications during garlic (G: 300 and 240 kg N ha -1) and maize seasons (M: 220, 175, and 130 kg N ha -1) on soil N2O emissions and crop yields. The findings showed that reducing the annual N application rate by 45-150 kg ha -1 led to a significant decrease in N2O emission flux by 27.7%-69.4% and 30.7%-53.6% in maize and garlic season respectively, compared to conventional N application (G300M220). However, decreasing N application notably reduced garlic yield by 4.5-22.8%. Furthermore, reducing annual N application decreased net environmental and diminished net environmental and economic benefits (NEEB) by 3.7%-28.9%. Multiple regression analysis demonstrated that the residual NO3-- N in the soil before nitrogen application significantly influenced short-term N2O emissions post-application, while WFPS exerting a more pronounced effect during the maize season. Precipitation and temperature exhibited contrasting impacts on N2O emissions in the two crop seasons. Principal component analysis revealed that supplemental irrigation enhances crop yield in the maize growing season but also exacerbated N2O emissions due to the alternation of dry and wet conditions. Precipitation in the garlic growing season emerged as a crucial meteorological factor affecting crop yield and N2O emissions. The NEEB analysis suggested that reducing 45 kg N ha -1 in the maize season (G300M175) represents a more balanced N application approach to mitigate productivity and environmental risks in rotation systems. Therefore, accounting for the stimulating effect of soil environmental factors during the short-term N application process, adjusting irrigation practices based on seasonal precipitation and temperature variations can enhance productivity and reduce gaseous nitrogen losses in multiple cropping systems within semi-arid regions.
英文关键词	Crop yield Garlic-maize rotation system Net environmental and economic benefits Nitrate nitrogen N2O emission
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001223690900001
WOS关键词	GREENHOUSE-GAS EMISSIONS ; CROPPING SYSTEM ; NITRIFICATION INHIBITOR ; OXIDE EMISSIONS ; CHINA ; YIELD
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/2XILL650/403691
推荐引用方式 GB/T 7714	Liu, Dan,Ma, Chi,Liu, Yang,et al. Driving soil N2O emissions under nitrogen application by soil environmental factor changes in garlic-maize rotation systems[J],2024,156.
APA	Liu, Dan.,Ma, Chi.,Liu, Yang.,Mo, Qin.,Lin, Wei.,...&Han, Qingfang.(2024).Driving soil N2O emissions under nitrogen application by soil environmental factor changes in garlic-maize rotation systems.EUROPEAN JOURNAL OF AGRONOMY,156.
MLA	Liu, Dan,et al."Driving soil N2O emissions under nitrogen application by soil environmental factor changes in garlic-maize rotation systems".EUROPEAN JOURNAL OF AGRONOMY 156(2024).