基于双线性理论的参考作物蒸发蒸腾量估算  

The Reference Crop Evapotranspiration Estimation Based on Bilinear Theory

作　　者：战国隆 门旗 赵文举[2] 

机构地区：[1]甘肃大禹节水集团股份有限公司研发中心,甘肃酒泉735000 [2]兰州理工大学能源与动力工程学院,兰州730050

出　　处：《灌溉排水学报》2011年第6期89-92,共4页Journal of Irrigation and Drainage

基　　金：国家863计划课题(2006AA100213)

摘　　要：利用成都、乐山、内江和雅安在1951—2000年的气象资料和地理参数,用Penman-Monteith公式计算蒸发蒸腾量(ET0),将双线性理论用于ET0的计算,建立了多个计算ET0的双线性模型,进一步利用双线性模型计算的ET0再建立双线性模型,在已建立的双线性模型基础上,又建立了简化双线性模型。各双线性模型与P-M计算的ET0对比研究表明,空气温度与太阳净辐射、空气湿度与太阳净辐射所建立的ET0双线性模型计算精度较高;简化后的双线性模型的计算精度较低。According to the meteorological data and geographical parameters in 1951--2000, calculating crop the evapotranspiration （ETo） for Penman-Monteith model. Calculated of the ETo in the bilinear theory, establishing the calculation of ETo calculated by bilinear model, and to further utilize step bilinear model establishment of ETo calculated by bilinear model, by analogy, establishing the simplified bilinear model. Through comparing the relative error of the absolute value of mean and the root-mean-square error with the different bilinear model, the bilinear model precision is high. Through mean absolute error and the average relative error are smaller in the simplified bilinear model. Therefore, in practice, we may use the simplified bilinear model for calculation of the ET0 calculated based the precise demand.

关 键 词：PENMAN-MONTEITH ETo 双线性模型 简化双线性模型 

分 类 号：S161.4[农业科学—农业气象学]