晋西北是严重干旱地区,雨量少,水源缺乏,有长流水的沟壑也不多。仅沿北部的管涔山系、五台山系和西部的紫金山系有些长流水的沟。充分合理地利用小沟壑里的小股泉水,是干旱山区扩大灌溉面积的重要途径。根据我们在晋西的临县、离石、中阳和晋北的河曲、广 Northwest Shanxi is a severe arid area with less rainfall, lack of water and few gully waters with long flowing water. Only along the northern Guanziyama, Mount Wutai and the western part of the Purple Mountain some long-flowing ditch. It is an important way to expand the irrigated area in the arid mountainous area to make full and reasonable use of the small stock spring water in the small gully. According to our county in Shanxi Province, Lishi, Zhongyang and the Northern Hemisphere, wide