Arid
DOI10.1016/j.fcr.2017.06.003
Crop water use under Swiss pedoclimatic conditions - Evaluation of lysimeter data covering a seven-year period
Oberholzer, Simon1; Prasuhn, Volker2; Hund, Andreas1
通讯作者Prasuhn, Volker
来源期刊FIELD CROPS RESEARCH
ISSN0378-4290
EISSN1872-6852
出版年2017
卷号211页码:48-65
英文摘要

Due to climate change, agricultural production in Europe will be challenged by higher temperatures and shifts in precipitation distribution that will give rise to frequent summer droughts. An adaptation of agricultural systems to these changes requires detailed knowledge of crop water use characteristics. This study aimed to evaluate the dynamics of evapotranspiration and water uptake in different crops under the typical edaphoclimatic conditions of Switzerland. Seven years (2009-2015) of high resolution lysimeter mass data including 70 lysimeter-by-year combinations were evaluated. The "adaptive window and adaptive threshold "-filter (AWAT) was used to determine evapotranspiration (ET), precipitation (P), crop coefficient (K-c) and water use efficiency (WUE). Additionally, FDR sensors installed in the lysimeter soil core allowed recording the temporal dynamic of soil water extraction. The evaluation comprised grain maize, silage maize, rapeseed, sugar beets, winter barley, winter wheat and temporary ley. The AWAT filter was successfully used to determine lysimeter P that was inserted in the lysimeter water balance equation to calculate daily ET. It could be shown that the peak of daily crop coefficient coincided with the time of flowering for all flowering arable crops. WUE’s lay in the range given by standard literature, but daily crop coefficients were clearly higher than proposed by the Food and Agriculture Organization of the United Nations (FAO) which is partially due to an oasis and border effect of the lysimeters. Years with limited water availability were characterized by a comparably low K-c. For example, rapeseed in 2011 and maize in 2015 showed substantially lower K-c values. In accordance with the reduced K-c readily available water was totally removed down to soil depth of at minimum 0.85 m. The limited water availability led to significantly lower yields only in case of silage maize in 2015. These results show overall current water supply to be sufficient under Swiss conditions; however, if drought events like in 2015 become more frequent and even more intense, yield potential of typical Swiss arable crops will be limited by water availability.


英文关键词Crop coefficient Evapotranspiration Lysimeter Phenology Water use efficiency
类型Article
语种英语
国家Switzerland
收录类别SCI-E
WOS记录号WOS:000406725100006
WOS关键词WINTER-WHEAT ; SOIL-WATER ; ROOT-GROWTH ; BALANCE COMPONENTS ; USE EFFICIENCY ; GRAIN MAIZE ; YIELD ; EVAPOTRANSPIRATION ; PRECIPITATION ; DROUGHT
WOS类目Agronomy
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/2XILL650/198926
作者单位1.Swiss Fed Inst Technol, Inst Agr Sci, CH-8092 Zurich, Switzerland;
2.Agroscope, Res Div, Agroecol & Environm, CH-8046 Zurich, Switzerland
推荐引用方式
GB/T 7714
Oberholzer, Simon,Prasuhn, Volker,Hund, Andreas. Crop water use under Swiss pedoclimatic conditions - Evaluation of lysimeter data covering a seven-year period[J],2017,211:48-65.
APA Oberholzer, Simon,Prasuhn, Volker,&Hund, Andreas.(2017).Crop water use under Swiss pedoclimatic conditions - Evaluation of lysimeter data covering a seven-year period.FIELD CROPS RESEARCH,211,48-65.
MLA Oberholzer, Simon,et al."Crop water use under Swiss pedoclimatic conditions - Evaluation of lysimeter data covering a seven-year period".FIELD CROPS RESEARCH 211(2017):48-65.
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