经验业已证明,在黄土高原水土流失严重地区的治理规划中,从小流域做起,是一条优化的道路。结合责任制,实行户包,事半功倍。但是,规划中亟需解决的一个问题是:林业、牧业、农业,也就是种树、种草、种田的合理比例如何确定。自然希望在投资最少,收益最大的目标下求得土地利用分配比例。我们在实际工作中采用了系统分析中的线性规划方法试求对这一问题的解决,深感值得探索,为抛砖引玉,介绍如下。 Experience has proved that in the management of loess plateau where soil and water loss are serious, starting from a small watershed, it is an optimized road. With the responsibility system, the implementation of household package, with less. However, one of the problems to be solved urgently in the planning is how to determine the reasonable proportion of forestry, animal husbandry and agriculture, that is, planting trees, planting grass and farming. Naturally, we hope to find the proportion of land-use distribution under the goal of minimizing investment and maximizing returns. In the actual work, we use the linear programming method in system analysis to try to solve this problem, which is deeply worth exploring, as a starting point, as follows.