Main section of this paper as follows:First,Comparison of ET0 which were calculated by different net solar radiation,such as they are estimated from solar constant,solar radiation measured and the measuring net radiation data.

• 用由太阳常数、太阳短波辐射计算出的浑善达克沙地气象站所在地的净辐射值及实测的净辐射值计算了参考作物蒸散速率(ET0),分析比较了计算的结果。