Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/ab17eb |
Benchmarking irrigation water use in producer fields in the US central Great Plains | |
Gibson, Katherine E. B.1,3; Gibson, Justin P.2,3; Grassini, Patricio1 | |
2019-05-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2019 |
卷号 | 14期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Efficient use of freshwater resources is necessary to balance food production and long-term sustainability of irrigated agricultural systems. Here we developed a framework to benchmark irrigation water use relative to crop yield for individual fields based on site-specific weather and soil. Subsequently, we used the framework to diagnose on-farm irrigation management, in relation to crop production, in maize and soybean producer fields in Nebraska (USA). We found actual irrigation to be similar to estimated irrigation water requirement in about half of the fields (i.e. small water surplus). Remarkably, these fields attained yields similar to fields where actual irrigation exceeded water requirements (i.e. large water surplus). Underlying causes for water surplus included producer risk aversion in soils with low water storage capacity, use of coarse methods for scheduling irrigation, and tillage. Scenario assessment indicated that total irrigation volume could potentially be reduced up to 25%-40%, without hurting crop yields, by reducing current irrigation surplus in years with above- or near-average seasonal precipitation. About a third of the producer fields already achieved high yields with little water surplus, supporting the contention that achieving high productivity with less irrigation by better matching irrigation amounts in relation with crop water requirements are compatible goals. The proposed framework can be applied to other crops and regions provided there are well-validated models, local soil and weather datasets, and reliable field-level irrigation, yield, and management records. |
英文关键词 | irrigation crop system benchmarking crop yield |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000466900800002 |
WOS关键词 | YIELD GAPS ; MAIZE ; MANAGEMENT ; STRATEGIES ; EFFICIENT ; DEFICIT ; TOOL |
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/182825 |
专题 | 气候变化 |
作者单位 | 1.Univ Nebraska, Dept Agron & Hort, Lincoln, NE 68583 USA; 2.Univ Nebraska, Sch Nat Resources, Lincoln, NE 68583 USA; 3.Univ Nebraska, Robert B Daugherty Water Food Global Inst, Lincoln, NE 68583 USA |
推荐引用方式 GB/T 7714 | Gibson, Katherine E. B.,Gibson, Justin P.,Grassini, Patricio. Benchmarking irrigation water use in producer fields in the US central Great Plains[J]. ENVIRONMENTAL RESEARCH LETTERS,2019,14(5). |
APA | Gibson, Katherine E. B.,Gibson, Justin P.,&Grassini, Patricio.(2019).Benchmarking irrigation water use in producer fields in the US central Great Plains.ENVIRONMENTAL RESEARCH LETTERS,14(5). |
MLA | Gibson, Katherine E. B.,et al."Benchmarking irrigation water use in producer fields in the US central Great Plains".ENVIRONMENTAL RESEARCH LETTERS 14.5(2019). |
条目包含的文件 | 条目无相关文件。 |
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