大力兴修水利促进昌平发展○昌平县常务副县长董瑞龙昌平县位于北京市西北部、属于海河流域，北倚军都山，是太行山脉与燕山山脉的交汇处，南俯缓缓倾斜的北京小平原，地处温榆河冲积扇顶部，总面积达１３５２ｋｍ２。解放前，全县没有一处可供利用的水利工程，农业只能靠... Vigorously build water conservancy to promote the development of Changping ○ Changping County, deputy county governor Dong Ruilong Changping County is located in the northwest of Beijing, belongs to the Haihe River Basin, and relies on Jundu Mountain in the north. It is the junction of the Taihang Mountains and the Yanshan Mountains, and the southern tip of the small slope of Beijing The plain, located at the top of the alluvial fan at Wenyu River, has a total area of ​​1352km2. Before the liberation, there was no water conservancy project available in the whole county. Agriculture can only rely on...