The optimumpolicy of conjunctive operation of canal and well can be widely used in irrigation engineering management of the Hetao irrigation district.
渠井联合运用的优化决策，可广泛应用于河套引黄灌区灌排工程配套及管理之中。
2
It puts forward an optimum decision model of non agricultural use of cultivated land and makes a simple exposition of policy enlightenment on protecting cultivated land.
It is undoubtedly an optimum to choose the anti-cycle policy when hearing the voice of foam in real estate of our country higher and higher in present.