简化参考作物蒸发蒸腾量计算方法在都江堰灌区的应用  

Study on Applicability of Simplified Calculation Method of Reference Crop Evapotranspiration in Dujiangyan Irrigated Area

作　　者：王延珺 张海涛[3] 杜军凯[3] 黄晓荣[1,2] WANG Yan-jun;ZHANG Hai-tao;DU Jun-kai;HUANG Xiao-rong(State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan University,Chengdu 610065,China;College of Water Resource&-Hydropower,Sichuan University,Chengdu 610065,China;China Institute of Water Resources and Hydropower Research.Beijing 100038,China)

机构地区：[1]四川大学水力学与山区河流开发保护国家重点实验室,四川成都610065 [2]四川大学水利水电学院,四川成都610065 [3]中国水利水电科学研究院,北京100038

出　　处：《水电能源科学》2021年第11期166-169,47,共5页Water Resources and Power

基　　金：国家自然科学基金项目(51779160)。

摘　　要：为探究都江堰灌区在缺乏气象要素的情况下采用简化方法准确计算参考作物蒸发蒸腾量,选取郫都区作为典型区域,根据2015~2019年逐日气象资料数据,采用FAO-56 Penman-Monteith法、Hargreaves法、两种改进的Hargreaves法、Priestley-Taylor法及Irmark-Allen拟合法计算逐日E_(ET_(0)),以FA0-56 PenmanMonteith法计算出的E_(ET_(0OM))为标准,分别与其他5种简化方法计算出的F_(ET)_(0i))进行线性拟合和二次拟合得到修正参数,对5种简化方法进行修正得到F_(ET_(0i))^(*),并评价和分析了修正的精度。为了使修正后的简化方法在都江堰灌区的适用性更具说服力,选择都江堰温江灌区2020年气象数据进一步验证说明。结果表明,两种拟合方法修正的简化方法计算结果与标准E_(ET_(0PM))的误差较小,可有效提高计算精度。因此简化方法经修正后可作为都江堰灌区在气象资料短缺条件下的E_(ET_(0))计算方法。In order to explore how to accurately calculate the reference evapospiration of plants in the situation of lack of meteorological elements in Dujiangyan irrigation district,in this paper,Pidu district was selected as a typical region.According to the daily meteorological data of 2015-2019,FAO-56 Penman-Monteith method,Hargreaves method,two improved Hargreaves method,Priestley-Taylor method and Irmark-Allen were used to calculate the daily E_(E_(T0)).Taking the E_(ET)_(0PM)calculated by FAO-56 Penman-Monteith method as the standard,linear fitting and quadratic fitting were carried out respectively with the E_(ET)_(0i)^(*)calculated by other five simplified methods to obtain the modified parameters.E_(ET)_(0i)^(*).was obtained by modifying the five simplified methods,and the modified accuracy was evaluated and analyzed.In order to make the applicability of the revised simplified method more convincing in the Dujiangyan Irrigation Area,meteorological data of Wenjiang Irrigation Area in Duiiangyan in 2020 were selected for further verification.The results show that the calculation result of the simplified method modified by the two fitting methods has a small error with the standard E_(ET)_(0PM),which can effectively improve the calculation accuracy.Therefore,the modified simplified method can be used as the EET0 calculation method for Dujiangyan irrigation area under the condition of shortage of meteorological data.

关 键 词：参考作物蒸发蒸腾量 FA0-56 Penman-Monteith法 简化E_(E_(T0))计算方法 精度分析 

分 类 号：S274.4[农业科学—农业水土工程]