DOI: 10.1111/gcb.13918
Scopus记录号: 2-s2.0-85032818617
论文题名: Enhanced-efficiency fertilizers are not a panacea for resolving the nitrogen problem
作者: Li T. ; Zhang W. ; Yin J. ; Chadwick D. ; Norse D. ; Lu Y. ; Liu X. ; Chen X. ; Zhang F. ; Powlson D. ; Dou Z.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期: 2 起始页码: e511
结束页码: e521
语种: 英语
英文关键词: ammonia loss
; biophysical conditions
; enhanced efficiency fertilizers
; nitrate leaching
; nitrogen management
; nitrous oxide emission
Scopus关键词: ammonia
; climate change
; climate effect
; emission inventory
; fertilizer
; leaching
; maize
; management practice
; nitrate
; nitrification
; nitrogen
; nitrous oxide
; paddy field
; polymer
; wheat
; Triticum aestivum
; Zea mays
英文摘要: Improving nitrogen (N) management for greater agricultural output while minimizing unintended environmental consequences is critical in the endeavor of feeding the growing population sustainably amid climate change. Enhanced-efficiency fertilizers (EEFs) have been developed to better synchronize fertilizer N release with crop uptake, offering the potential for enhanced N use efficiency (NUE) and reduced losses. Can EEFs play a significant role in helping address the N management challenge? Here we present a comprehensive analysis of worldwide studies published in 1980–2016 evaluating four major types of EEFs (polymer-coated fertilizers PCF, nitrification inhibitors NI, urease inhibitors UI, and double inhibitors DI, i.e. urease and nitrification inhibitors combined) regarding their effectiveness in increasing yield and NUE and reducing N losses. Overall productivity and environmental efficacy depended on the combination of EEF type and cropping systems, further affected by biophysical conditions. Best scenarios include: (i) DI used in grassland (n = 133), averaging 11% yield increase, 33% NUE improvement, and 47% decrease in aggregated N loss (sum of NO3 -, NH3, and N2O, totaling 84 kg N/ha); (ii) UI in rice-paddy systems (n = 100), with 9% yield increase, 29% NUE improvement, and 41% N-loss reduction (16 kg N/ha). EEF efficacies in wheat and maize systems were more complicated and generally less effective. In-depth analysis indicated that the potential benefits of EEFs might be best achieved when a need is created, for example, by downward adjusting N application from conventional rate. We conclude that EEFs can play a significant role in sustainable agricultural production but their prudent use requires firstly eliminating any fertilizer mismanagement plus the implementation of knowledge-based N management practices. © 2017 John Wiley & Sons Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110546
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Key Laboratory of Plant-Soil Interactions, Ministry of Education, Center for Resources, Environment, and Food Security, Agricultural University, Beijing, China; School of Environment, Natural Resources and Geography, Bangor University, Bangor, Gwynedd, United Kingdom; Institute for Sustainable Resources, University College London, London, United Kingdom; School of International Development, University of East Anglia, Norwich, United Kingdom; Department of Sustainable Agriculture Sciences, Rothamsted Research, Harpenden, United Kingdom; Center for Animal Health and Productivity, School of Veterinary Medicine, University of Pennsylvania, Kennett Square, PA, United States
Recommended Citation:
Li T.,Zhang W.,Yin J.,et al. Enhanced-efficiency fertilizers are not a panacea for resolving the nitrogen problem[J]. Global Change Biology,2018-01-01,24(2)