干旱区生态环境知识资源中心(Arid): Enhancing crop production and carbon sequestration of wheat in arid areas by green manure with reduced nitrogen fertilizer

Arid

DOI	10.1016/j.jenvman.2024.121571
	Enhancing crop production and carbon sequestration of wheat in arid areas by green manure with reduced nitrogen fertilizer
	Zhang, Diankai; Yin, Wen; Chai, Qiang; Fan, Zhilong; Hu, Falong; Zhao, Lianhao; Fan, Hong; He, Wei; Cao, Weidong
通讯作者	Yin, W
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN	0301-4797
EISSN	1095-8630
出版年	2024
卷号	365
英文摘要	Green manure with appropriate amount of chemical nitrogen fertilizer can increase crop yield, but also aggravate soil carbon emissions. However, it is unclear whether incorporation of green manure into the cropping pattern with reduced nitrogen amount can alleviate this situation and enhance carbon sequestration potential. So, a field experiment with split-plot design was set up in 2018 of northwest China, and studied the effects of nitrogen reduction on crop productivity, carbon emissions, and carbon sequestration potential in 2021-2023. The main plots were two cropping patterns, including multiple cropped green manure after wheat harvest (W-G) and fallow after wheat harvest (W). Three nitrogen application levels formed the split-plots, including local conventional nitrogen amount (N3, 180 kg ha-1), nitrogen amount reduced by 15% (N2, 153 kg ha-1) and 30% (N3, 126 kg ha-1). The results showed that W-G increased grain yield of wheat and energy yield of wheat multiple cropped green manure pattern. The multiple cropped green manure after wheat harvest with local conventional nitrogen amount reduced by 15% (W-GN2) had the significant increasing-effect, and increased grain yield of wheat by 9.6% and increased total energy yields by 39.3% compared to fallow after wheat harvest with local conventional nitrogen amount (W-N3). Relative to W-N3, W-GN2 did not significantly increase carbon emissions of wheat season, and increased total carbon emissions of cropping pattern by 11.1%. Compared to multiple cropped green manure after wheat harvest with local conventional nitrogen amount (W-GN3), W-GN2 decreased carbon emissions by 5.8% in wheat season and decreased by 3.9% in the whole cropping pattern. Therefore, WGN2 gained high carbon emission efficiency based on grain yield, and were 9.9% and 11.2% higher than W-N3 and W-GN3, respectively. In addition, W-GN2 enhanced soil total nitrogen, carbon, and organic carbon contents, compared with W-N3, thus increasing soil carbon sequestration potential index (net primary productivity/carbon emissions). We conclude that multiple cropped leguminous green manure after wheat harvest with local conventional nitrogen amount reduced by 15% can enhance crop productivity and carbon sequestration potential of farmland in arid areas.
英文关键词	Wheat production Multiple cropped green manure Nitrogen amount reduction Soil respiration Carbon sequestration
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001259537300001
WOS关键词	SOIL CO2 EMISSIONS ; ORGANIC-CARBON ; MANAGEMENT ; MAIZE ; YIELD ; RESPIRATION ; TILLAGE ; GRAIN ; PEA ; AVAILABILITY
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404480
推荐引用方式 GB/T 7714	Zhang, Diankai,Yin, Wen,Chai, Qiang,et al. Enhancing crop production and carbon sequestration of wheat in arid areas by green manure with reduced nitrogen fertilizer[J],2024,365.
APA	Zhang, Diankai.,Yin, Wen.,Chai, Qiang.,Fan, Zhilong.,Hu, Falong.,...&Cao, Weidong.(2024).Enhancing crop production and carbon sequestration of wheat in arid areas by green manure with reduced nitrogen fertilizer.JOURNAL OF ENVIRONMENTAL MANAGEMENT,365.
MLA	Zhang, Diankai,et al."Enhancing crop production and carbon sequestration of wheat in arid areas by green manure with reduced nitrogen fertilizer".JOURNAL OF ENVIRONMENTAL MANAGEMENT 365(2024).