黄河中上游地区的水土流失防治工作,历来是我国水土保持工作的重点。河口镇至龙门区间十万平方公里的多沙粗沙区,是入黄泥沙的主要产源地,是重点的重点。国家把无定河、皇甫川、三川河流域和甘肃省定西县确定为重点治理示范区,标志着这一地区的水保建设进入一个新的里程碑。一、重点治理是水土保持建设的战略抉择 (一)重点治理区的由来和基本情况。黄河中游的重点治理包括三河一县是1982年8月全国第四次水土保持工作会议上确定的。经过5年治理,在1988年全国八片水土保持重点区第五次会议上,对以前的两三年理顺关系,打好基础,五年初见成 Prevention and control of soil and water loss in the middle and upper reaches of the Yellow River has always been the focus of soil and water conservation in our country. Hekou town to the Longmen area of ​​one hundred thousand square kilometers of coarse sandy area, is the main source of yellow sediment is the focus of attention. The state identified Wuding River, Huangfuchuan River, Sanchuan River Basin and Dingxi County of Gansu Province as the key governance demonstration zones, marking a new milestone in the water and soil conservation construction in this area. First, focus on governance is the strategic choice of soil and water conservation construction (A) the origin and basic conditions of key areas. The key management in the middle reaches of the Yellow River, including Sanhe County, was decided at the Fourth National Soil and Water Conservation Work Conference in August 1982. After five years of governance, at the fifth meeting of the eight key national areas for soil and water conservation in 1988, we laid the foundations for straightening out the relations in the past two to three years and met the standards in the early five years