Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/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
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ISSN | 0378-3774 |
EISSN | 1873-2283 |
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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