| 参考作物腾发量计算方法的适用性研究 |
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| 引用本文： | 廖显琴,李毅.参考作物腾发量计算方法的适用性研究[J].灌溉排水学报,2009(6). |
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| 作者姓名： | 廖显琴 李毅 |
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| 作者单位： | 西北农林科技大学水利与建筑工程学院; |
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| 基金项目： | 西北农林科技大学2006“青年学术骨干支持计划”; 国家自然科学基金项目(50709028) |
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| 摘 要： | 选用5种方法,利用陕西6站的气象资料,计算了各站逐日ET0。并以FAO56 Penman-Monteith(P-M)法为标准,对其它方法进行评价。结果表明,在陕西6地区,5种方法计算的ET0变化趋势基本相同,但数值上有一定差异,所有的差异随ET0的增大而增大。Hargreaves法计算结果差异性较小,适用性较好;1948Penman和Priestley-Taylor二方法估值较FAO24 Penman法更接近P-M法的计算结果;缺气象资料时,Priestley-Taylor法可获得较好估值,且更适用于湿润地区;FAO24 Penman法也能获得较好结果,但其估值精度低于Priestley-Taylor法,一般不宜采用。同时分析了P-M法计算的ET0值和水面蒸发量之间的关系,为利用水面蒸发资料估算陕西6地区ET0值提供参考。
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| 关 键 词： | 参考作物腾发量 FAO56Penman-Monteith方法 适用性 水面蒸发量 |
Adaptability Research of Different Reference Crop Evapotranspiration Estimated Methods in Shaanxi |
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| LIAO Xian-qin,LI Yi.Adaptability Research of Different Reference Crop Evapotranspiration Estimated Methods in Shaanxi[J].Journal of Irrigation and Drainage,2009(6). |
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| Authors: | LIAO Xian-qin LI Yi |
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| Institution: | LIAO Xian-qin,LI Yi (College of Hydraulic and Architectural Engineering,Northwest Sci-Tech Agriculture and Forestry University,Yangling 712100,China) |
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| Abstract: | It is the foundation of crop water requirement and production management to make the accurate estimation of reference crop evapotranspiration(ET0) for every region,particularly,it is very important for agricultural water-saving irrigation planning.The daily ET0 was computed by five methods with the meteorological data from six weather stations of Shaanxi.As FAO56 Penman-Monteith(P-M) method is taken as the standard,the comparison is taken and the results are as follows.The variation trend of ET0 calculated ... |
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| Keywords: | reference crop evapotranspiration FAO56 Penman-Monteith method adaptability evaporation |
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