陝北黄土丘陵沟壑区,由于长期不合理的垦植利用,加剧了水土流失,严重地影响了农业生产。解放后,在党和政府的領导下开展羣众性的水土保持工作;并由有关部门相继在本区設立水土保持試驗站八处,总結羣众經驗,探索有效的保水、固土和控制土壤侵蝕的方法,对該区水土保持工作的开展起了重大作用。尽管如此,但是仍不能滿足形势的需要,特別对于草原輪牧,草地更新等工作必須深入研究。我們在志丹、神 In loess hilly and gully regions of northern Shaanxi, soil erosion has been exacerbated due to long-term unreasonable cultivation and utilization, which has seriously affected agricultural production. After the liberation, under the leadership of the party and the government to carry out mass water and soil conservation work; and by the relevant departments have successively set up eight soil and water conservation pilot station in this area, summed up the masses experience to explore effective water retention, soil and The method of controlling soil erosion played a significant role in the work of soil and water conservation in this area. However, it still can not meet the needs of the situation. In particular, we must conduct an in-depth study on the grazing rotation and pasture regeneration. We are in Zhidan, God