Arid
DOI10.1016/j.agwat.2009.04.015
Water use of spring wheat to raise water productivity
Lopez-Urrea, R.1; Montoro, A.1; Gonzalez-Piqueras, J.2; Lopez-Fuster, P.1; Fereres, E.3
通讯作者Lopez-Urrea, R.
来源期刊AGRICULTURAL WATER MANAGEMENT
ISSN0378-3774
EISSN1873-2283
出版年2009
卷号96期号:9页码:1305-1310
英文摘要

In semi-arid environments with a shortage of water resources and a risk of overexplotation of water supplies, spring wheat (Triticum aestivum L.) is a crop that can reduce water use and increase water productivity, because it takes advantage of spring rainfall and is harvested before the evaporative demands of summer. We carried out an experiment in 2003 at "Las Tiesas" farm, located between Barrax and Albacete (Central Spain), to improve accuracy in the estimation of wheat evapotranspiration (ETc) by using a weighing lysimeter. The measured seasonal ETc averages (5.63 mm day(-1)) measured in the lysimeter was 417 mm compared to the calculated ETc values (5.31 mm day(-1)) calculated with the standard FAD methodology of 393 mm. The evapotranspiration crop coefficient (Kc) derived from lysimetric measurements was Kc-mid: 1.20 and Kc-end: 0.15. The daily lysimeter Kc values were fit to the evolution linearly related to the green cover fraction (fc), which follows the crop development pattern. Seasonal soil evaporation was estimated as 135 mm and the basal crop coefficient approach was calculated in this study, Kcb which separates crop transpiration from soil evaporation (evaporation coefficient, Ke) was calculated and related to the green cover fraction (fc) and the Normalized Difference Vegetation Index (NDVI) obtained by field radiometry in case of wheat. The results obtained by this research will permit the reduction of water use and improvement of water productivity for wheat, which is of vital importance in areas of limited water resources. (C) 2009 Elsevier B.V. All rights reserved.


英文关键词Wheat Crop evapotranspiration Lysimeter Single and dual crop coefficients Green cover fraction Normalized Difference Vegetation Index
类型Article
语种英语
国家Spain
收录类别SCI-E
WOS记录号WOS:000267412200004
WOS关键词CROP COEFFICIENTS ; EVAPOTRANSPIRATION EQUATIONS ; VEGETATION INDEXES ; WINTER-WHEAT ; CORN ; IRRIGATION ; CLIMATE ; BARLEY ; COVER ; NDVI
WOS类目Agronomy ; Water Resources
WOS研究方向Agriculture ; Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/159605
作者单位1.ITAP, Alicante 02080, Spain;
2.Univ Castilla La Mancha, Inst Reg Dev, Remote Sensing & GIS Grp, E-02071 Albacete, Spain;
3.Univ Cordoba, CSIC, IAS, E-14080 Cordoba, Spain
推荐引用方式
GB/T 7714
Lopez-Urrea, R.,Montoro, A.,Gonzalez-Piqueras, J.,et al. Water use of spring wheat to raise water productivity[J],2009,96(9):1305-1310.
APA Lopez-Urrea, R.,Montoro, A.,Gonzalez-Piqueras, J.,Lopez-Fuster, P.,&Fereres, E..(2009).Water use of spring wheat to raise water productivity.AGRICULTURAL WATER MANAGEMENT,96(9),1305-1310.
MLA Lopez-Urrea, R.,et al."Water use of spring wheat to raise water productivity".AGRICULTURAL WATER MANAGEMENT 96.9(2009):1305-1310.
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