黄土丘陵沟壑区丘陵起伏,沟谷纵横,地面切割破碎,水土严重流失;农业、生态、经济极度失调和落后.本文从恢复和维护生态平衡的观点出发,试述较有效地控制土壤侵蚀,开发、利用、改造和保护土地资源,通过种草养畜及其保持水土的相互协调和利用,使生产和生态系统形成良性循环.作者认为,从种草起步,大力发展畜牧业,合理利用丘陵沟壑区的土地资源,从而达到了保土、保肥、蓄水和涵养水源是综合治理的重要措施 The hills and valleys in the hilly and gully regions of the Loess Plateau fluctuated, the vertical and horizontal valleys of the Loess Plateau were crushed and the water and soil were seriously lost, and the agriculture, ecology and economy were extremely unbalanced and backward.In this paper, from the viewpoint of restoring and maintaining the ecological balance, Make use of, transform and protect the land resources, and make the production and ecosystem form a virtuous cycle through raising and supporting livestock and their mutual coordination and utilization of water and soil.The author thinks that starting from planting grass, developing livestock husbandry and making rational use of the hilly and gully areas Of the land resources, so as to achieve the soil, fertilizer, water and conservation of water is an important measure of comprehensive management