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DOI | 10.1088/1748-9326/aab908 |
Dynamic model-based N management reduces surplus nitrogen and improves the environmental performance of corn production | |
Sela, S.; Woodbury, P. B.; van Es, H. M. | |
2018-05-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS
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ISSN | 1748-9326 |
出版年 | 2018 |
卷号 | 13期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The US Midwest is the largest and most intensive corn (Zea mays, L.) production region in the world. However, N losses from corn systems cause serious environmental impacts including dead zones in coastal waters, groundwater pollution, particulate air pollution, and global warming. New approaches to reducing N losses are urgently needed. N surplus is gaining attention as such an approach for multiple cropping systems. We combined experimental data from 127 on-farm field trials conducted in seven US states during the 2011-2016 growing seasons with biochemical simulations using the PNM model to quantify the benefits of a dynamic location-adapted management approach to reduce N surplus. We found that this approach allowed large reductions in N rate (32%) and N surplus (36%) compared to existing static approaches, without reducing yield and substantially reducing yield-scaled N losses (11%). Across all sites, yield-scaled N losses increased linearly with N surplus values above similar to 48 kg ha(-1). Using the dynamic model-based N management approach enabled growers to get much closer to this target than using existing static methods, while maintaining yield. Therefore, this approach can substantially reduce N surplus and N pollution potential compared to static N management. |
英文关键词 | N surplus corn yield-scaled N losses crop simulation dynamic model-based N management |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000431146200003 |
WOS关键词 | VARIABLE CROPPING HISTORY ; YIELD-SCALED BASIS ; CLAY LOAM SOILS ; UNITED-STATES ; OXIDE EMISSIONS ; FERTILIZER RATE ; MAIZE ; LOSSES ; CALIBRATION ; TRANSPORT |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/31039 |
专题 | 气候变化 |
作者单位 | Cornell Univ, Sch Integrat Plant Sci, Soil & Crop Sci Sect, Ithaca, NY 14850 USA |
推荐引用方式 GB/T 7714 | Sela, S.,Woodbury, P. B.,van Es, H. M.. Dynamic model-based N management reduces surplus nitrogen and improves the environmental performance of corn production[J]. ENVIRONMENTAL RESEARCH LETTERS,2018,13(5). |
APA | Sela, S.,Woodbury, P. B.,&van Es, H. M..(2018).Dynamic model-based N management reduces surplus nitrogen and improves the environmental performance of corn production.ENVIRONMENTAL RESEARCH LETTERS,13(5). |
MLA | Sela, S.,et al."Dynamic model-based N management reduces surplus nitrogen and improves the environmental performance of corn production".ENVIRONMENTAL RESEARCH LETTERS 13.5(2018). |
条目包含的文件 | 条目无相关文件。 |
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