通过对五原县农用地估价的实证得出：（1）五原县农用地价格-级别曲线是一条斜向上的凹形曲线，价格随着级别的增大而上升。
Through evaluating to the county of Wuyuan , we obtain that : 1.The curve of agricultural land price in Wuyuan is up-inclined and scotia curve , the price upgrade as the level enlarge .
五原县