参考作物腾发量计算方法在玛纳斯河流域的应用比较  

Comparison of Reference Crop Evapotranspiration Computing Methods on Manasi Basin

作　　者：杨玫[1] 孙西欢[1] 

机构地区：[1]太原理工大学水利科学与工程学院,太原030024

出　　处：《灌溉排水学报》2011年第1期125-129,共5页Journal of Irrigation and Drainage

基　　金：中国科学院知识创新工程重要方向项目(KZXC2-YW-BR-12)

摘　　要：基于玛纳斯河流域4个气象站莫索湾、炮台、石河子、乌兰乌苏1961—2005年的日观测气象数据,采用SWAT2000模型里引入的Penman-Monteith、Hargreaves、Priestley-Taylor方法计算每日参考作物腾发量(ET0),比较计算结果之间的差异性。结果表明,莫索湾站与炮台站Hargreaves方法估算结果高于Penman-Monteith方法,Priestley-Taylor方法低于Penman-Monteith方法;石河子站与乌兰乌苏站Hargreaves方法低于Penman-Monteith方法,Priestley-Taylor方法与Penman-Monteith方法结果接近;t检验炮台站Hargreaves与Penman-Monteith无显著差异,可以用Hargreaves替代Penman-Monteith方法;莫索湾、石河子与乌兰乌苏站Priestley-Taylor与Penman-Monteith方法无显著差异,可以用Priestley-Taylor方法替代Penman-Monteith方法;3种方法计算的参考作物腾发量与实测的水面蒸发量之间具有显著相关性,相关系数达到0.95以上,利用拟合公式,可以用水面蒸发资料估算3种方法计算的ET0值。Based on the daily observation meteorological data on mosuowai、paotai、shihezi and wulanwusu weather station,daily reference crop evapotranspiration were calculated and compared by Penman-Monteith、Hargreaves,Priestley-Taylor methods from SWAT2000.Results showed that the result of Hargreaves is greater than Penman-Monteith and Priestley-Taylor is less than Penman-Monteith on mosuowai and paotai.Hargreaves is less than Penman-Monteith and Priestley-Taylor is close to Penman-Monteith on shihezi and wulanwusu.Hargreaves is no significant difference with Penman-Monteith by t-test on paotai,thus can substitute Hargreaves for Penman-Monteith;Priestley-Taylor is no significant difference with Penman-Monteith on mosuowai,shihezi and wulanwusu,can substitute Priestley-Taylor for Penman-Monteith.Three methods calculating reference crop evapotranspiration were remarkable relativity with evaporation,correlation coefficient were greater than 0.95 and can estimate ET0 by evaporation using regression formula.

关 键 词：参考作物腾发量 计算方法 比较 水面蒸发量 

分 类 号：S311[农业科学—作物栽培与耕作技术]