如何开发贫困山区,这是一个十分重要的大课题。近年来,以山区小流域为单元的水土保持综合治理成效显著,成为贫困山区发展和振兴的良方,并给予巨大启示。因此,本文谈几点以小流域为单元系统开发的优越性。这里所讲的小流域,是指集水面积在5～10平方公里,有山、有沟、有坡、有田、有 How to develop impoverished mountainous areas is a very important issue. In recent years, the comprehensive management of soil and water conservation using the mountainous watershed as a unit has made remarkable achievements and has become a recipe for the development and rejuvenation of impoverished mountainous areas, and gives great inspiration. Therefore, this article talk about a few small watershed as a unit system development superiority. Small watershed here, refers to the catchment area of ​​5 to 10 square kilometers, with mountains, ditches, slopes, there are fields, there