干旱区生态环境知识资源中心(Arid): No tillage with previous plastic covering increases water harvesting and decreases soil CO2 emissions of wheat in dry regions

Arid

DOI	10.1016/j.still.2020.104883
	No tillage with previous plastic covering increases water harvesting and decreases soil CO2 emissions of wheat in dry regions
	Guo, Yao; Yin, Wen; Chai, Qiang; Fan, Zhilong; Hu, Falong; Fan, Hong; Zhao, Cai; Yu, Aizhong; Coulter, Jeffrey A.
通讯作者	Chai, Q (corresponding author), Gansu Prov Key Lab Aridland Crop Sci, Lanzhou 730070, Peoples R China.
来源期刊	SOIL & TILLAGE RESEARCH
ISSN	0167-1987
EISSN	1879-3444
出版年	2021
卷号	208
英文摘要	In arid and highly populated areas, water shortage and soil CO2 emission (CE) are seriously threatening the sustainability of agriculture. Optimization of tillage, irrigation, and nitrogen (N) application within cropping systems are keys to reducing CE. We hypothesized that an integrated system could increase crop yields and improve water harvesting, while reducing CE and enhancing C sequestration potential from crop production. In 2016-2018, this hypothesis was tested under spring wheat of maize-wheat rotation in field experiments in the arid inland irrigation of China. This research evaluated how no tillage, reduced the supply levels of irrigation and N affect crop yield, water harvesting, and CE, C sequestration potential of following spring wheat after plastic mulched maize. Across the three study years, tillage practice, irrigation level, and N level individually had a significant effect on grain yield, water harvesting, and CE characteristics of wheat in each year, but the interaction among the three factors was hardly significant. No tillage with previous residual plastic covering (NTP), reduced irrigation, and reduced N application increased grain yield, improved water harvesting of wheat, but decreased CE. On average, NTP practice combined with a reduction of 20 % in irrigation and N supply levels (i.e., the optimized system, NTPI2N2), increased grain yield, soil water storage between pre-sowing and post harvesting (wheat harvesting), and the ratio of transpiration to evaporation (T/E) by 13.6, 150.0, and 79.7 % (P < 0.05), respectively, compared to conventional tillage with local conventional high supply level in irrigation and N (i.e., the control, CTI2N3). The optimized system reduced CE and carbon emission intensity (CEI) by 31.3 % and 39.0 % (P < 0.05) compared to the control treatment, respectively. However, the optimized system had 7.5, 12.6, 7.5, and 57.4 % (P < 0.05) greater net primary production (NPP), net ecosystem production (NEP), carbon in harvested wheat (harvest-C), and the ratio of NPP/CE than the control. It indicates that the optimized system had greater potential for enhancing soil C sequestration. Therefore, no tillage with previous residual plastic covering from the previous maize combined with a 20 % reduction in both irrigation and N levels is a promising strategy to improve water harvesting, reduce CE, and enhance soil C sequestration potential of wheat production in dry regions.
英文关键词	No tillage with plastic covering Water harvesting C sequestration Yield performance Soil CO < sub > 2 < sub > emission
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000625890500009
WOS关键词	GREENHOUSE-GAS EMISSIONS ; SUSTAINABLE INTENSIFICATION ; USE EFFICIENCY ; NITROGEN ; RESPIRATION ; CARBON ; AGRICULTURE ; YIELD ; MITIGATION ; MANAGEMENT
WOS类目	Soil Science
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/2XILL650/368916
作者单位	[Guo, Yao; Yin, Wen; Chai, Qiang; Fan, Zhilong; Hu, Falong; Fan, Hong; Zhao, Cai; Yu, Aizhong] Gansu Prov Key Lab Aridland Crop Sci, Lanzhou 730070, Peoples R China; [Guo, Yao; Yin, Wen; Chai, Qiang; Fan, Zhilong; Hu, Falong; Yu, Aizhong] Gansu Agr Univ, Coll Agron, Lanzhou 730070, Peoples R China; [Coulter, Jeffrey A.] Univ Minnesota, Dept Agron & Plant Genet, St Paul, MN 55108 USA
推荐引用方式 GB/T 7714	Guo, Yao,Yin, Wen,Chai, Qiang,et al. No tillage with previous plastic covering increases water harvesting and decreases soil CO2 emissions of wheat in dry regions[J],2021,208.
APA	Guo, Yao.,Yin, Wen.,Chai, Qiang.,Fan, Zhilong.,Hu, Falong.,...&Coulter, Jeffrey A..(2021).No tillage with previous plastic covering increases water harvesting and decreases soil CO2 emissions of wheat in dry regions.SOIL & TILLAGE RESEARCH,208.
MLA	Guo, Yao,et al."No tillage with previous plastic covering increases water harvesting and decreases soil CO2 emissions of wheat in dry regions".SOIL & TILLAGE RESEARCH 208(2021).