西北黄土高原,丘陵起伏,沟壑纵横,树木稀少,干旱少雨,土质疏松,水土流失严重,给黄河中下游地区农业生产和人民生命财产造成极大危害。干旱,风沙、水土流失是黄土高原的突出问题。各地经验证明,要彻底改变黄土高原的自然面貌,战胜干旱威胁,改善农业生产条件,根治黄河灾害,必须大面积的植树追林,保持水土,涵养水源,防风固沙,保护农田。要大面积植树造林,就要按照自然规律和经济规律办事,治山,治水,治土,治沟,治林,山、水、田、林、路综合治理。 Northwest Loess Plateau, hills and downs, gully aspect, sparsely populated, dry, rainy, loose soil, soil erosion, causing serious damage to agricultural production and people’s lives and property in the middle and lower Yellow River. Droughts, sandstorms and soil erosion are prominent problems in the Loess Plateau. Experience from all parts of the country has proved that to completely change the natural landscape of the Loess Plateau, overcome the threat of drought, improve the conditions for agricultural production and cure the Yellow River disaster, we must extensively planted trees and reforest forests so as to maintain soil and water sources, conserve water sources, prevent wind and sand and protect farmland. To large-scale afforestation, we must act in accordance with the laws of nature and economic activities, cure mountains, flood control, soil erosion, trench management, forest management, mountains, water, fields, forests and roads comprehensive management.