| 豫西北几种ET_0计算方法的比较及Hargeaves公式的修正 |
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| 引用本文： | 王声锋,汪顺生,段爱旺,刘战东,罗长青.豫西北几种ET_0计算方法的比较及Hargeaves公式的修正[J].灌溉排水学报,2010,29(6). |
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| 作者姓名： | 王声锋 汪顺生 段爱旺 刘战东 罗长青 |
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| 基金项目： | 农业部作物需水与调控重点开放实验室基金，重大水专项资助项目，华北水利水电学院高层次人才科研启动项目 |
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| 摘 要： | 根据豫西北地区30年的气象资料,选用辐射法中的Makkink公式和Priestley-Taylor公式以及温度法的Hargreaves公式和McCloud公式计算了ET0,并以Penman-Monteith公式为标准,分别对各公式年值和旬均值的绝对误差、相对误差和累计误差进行分析,结果显示Hargreaves公式的精度最高。为了进一步提高Hargreaves公式的应用精度,建立了线形回归方程,并对其进行了修正。
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| 关 键 词： | 参考作物腾发量 Penman-Monteith Makkink Priestley-Taylor Hargreaves McCloud |
Evaluation on Several Methods for Estimating ET0 and Modified Hargeaves Formulas |
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| WANG Sheng-feng,WANG Shun-sheng,DUAN Ai-wang,LIU Zhan-dong,LUO Chang-qing.Evaluation on Several Methods for Estimating ET0 and Modified Hargeaves Formulas[J].Journal of Irrigation and Drainage,2010,29(6). |
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| Authors: | WANG Sheng-feng WANG Shun-sheng DUAN Ai-wang LIU Zhan-dong LUO Chang-qing |
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| Abstract: | According to climat data of 30 years in Guangli Irrigation District of northwest of Henan Province,the crop reference requirement(ET0) was calculated by Makkink,Priestley-Taylor,Hargreaves,McCloud and Penman-Monteith formula respectively.Absolute error,relative error and accumulative error of annual value and ten days were analyzed with Penman-Monteith formula as a standard.The result showed that Hargreaves formula had the highest accuracy.In order to improve the accuracy of Hargreaves formula,the multiple linear regression equation was established. |
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| Keywords: | crop reference requirement Penman-Monteith Makkink Priestley-Taylor Hargreaves McCloud |
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