基于波文比-能量平衡法的半湿润地区葡萄园蒸发蒸腾量估算  

Estimation of grape evapotranspiration in semi-humid region based on Bowen ratio energy balance method

作　　者：余昭君 胡笑涛[1] 冉辉 王雪梦 王文娥[1] 何雪霞 YU Zhaojun;HU Xiaotao;RAN Hui;WANG Xuemeng;WANG Wene;HE Xuexia(Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas,Ministry of Education, Northwest A & F University, Yangling, Shaanxi 712100)

机构地区：[1]西北农林科技大学旱区农业水土工程教育部重点实验室,陕西杨凌712100

出　　处：《干旱地区农业研究》2020年第4期175-183,共9页Agricultural Research in the Arid Areas

基　　金：国家重点研发计划课题(2017YFD0201508);陕西省科技统筹创新工程项目(2016KTZDNY-01-05)。

摘　　要：为准确估算半湿润地区葡萄园蒸发蒸腾量,在测定气象数据的基础上,以水量平衡法的实测蒸发蒸腾量(ET)为参考,分析判断波文比-能量平衡法估算半湿润地区葡萄园蒸发蒸腾量的适用性以及整个生育期内葡萄ET的变化规律,分别采用单作物系数法(Kc)、双作物系数法(Kcb)估算半干旱半湿润地区葡萄ET。结果表明:全生育期内波文比-能量平衡法与水量平衡法之间的均方根误差(RMSE)与纳什系数(NSE)分别为0.54与0.64,决定系数为0.82,说明波文比-能量平衡法可以较好地应用于半湿润地区葡萄园蒸发蒸腾估算,双作物系数法比单作物系数法估算结果更为精确,计算出的双作物系数0.85、1.07、0.71可以作为本地区值。In order to accurately estimate the evapotranspiration(ET)of vineyards in the sub-humid region based on the determination of meteorological data,this study analyzed and evaluated the applicability of Bowen ratio-energy balance method in estimating grape evapotranspiration in semi-humid areas and the variation rule of grape ET during the whole growth period by taking the measured ET of water balance method as a reference.Then,single crop coefficient method(Kc)and double crop coefficient method(Kcb)were used to estimate grape ET in semi-arid areas.Results showed that the root mean square error(RMSE)and coefficient of Nash(NSE)between Bowen ratio-energy balance method of the total growth period and the method of water balance were 0.54 and 0.64,respectively,and the determination coefficient was 0.82.Bowen ratio-energy balance method can be better applied to semi-humid region vineyard evapotranspiration estimation,in contrast,the method of double crop coefficient estimate result was more accurate than the single crop coefficient method.The calculated dual crop coefficients of 0.85,1.07,and 0.71 can be used as values in this region to provide theoretical basis for semi-humid region vineyard moisture management.

关 键 词：葡萄园 蒸发蒸腾量 波文比-能量平衡法 单作物系数法 双作物系数法 半湿润地区 

分 类 号：S161.4[农业科学—农业气象学] S663.1[农业科学—农业基础科学]