灌溉排水学报2011，Vol.30Issue(3)：82-85,4.
Hargreaves公式的改进及其在高寒地区的应用
Modified Hargreaves Equations and Their Application in High-cold Area
摘要
Abstract
To improve the application of Hargreaves equation, Free Search was employed to get the parameters of modifying Hargreaves equations based on daily meteorological data of Jiansanjiang and Harbin in Heilongjiang province, and the evaluation of the modified Hargreaves equations were verified by three time steps of daily, ten-day and monthly. The results show that the modified Hargreaves equations can solve the problem of the negative ET0, and its accuracy is identical with the verified Hargreaves equations recommended by FAO, when ET0 values calculated from Penman-Monteith equation is taken as standard. And what's more, a simple method for developing Hargreaves equation was developed.关键词
参考作物蒸发蒸腾量；Penman-Monteith公式/改进Hargreaves公式；自由搜索Key words
reference crop evapotranspiration/ Penman-Monteith equation/ modified Hargreaves equation/ Free Search分类
农业科技引用本文复制引用
王斌,付强,张金,王敏,宋族鑫..Hargreaves公式的改进及其在高寒地区的应用[J].灌溉排水学报,2011,30(3):82-85,4.基金项目
国家自然科学基金项目(51009026)；黑龙江省博士后资助经费；东北农业大学博士科研启动基金项目 （51009026）
