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杜家石沟位于无定河中游,是陕西省米脂县的一个普通小山庄。属于黄土丘陵沟壑区,地形错纵复杂,支离破碎,深二百公尺以上的沟壑,每平方公里以内就有5——6条,大小不等的丘陵山岇,每平方公里内有30—40个。被复稀少,土质疏松,春冬两季狂风干早,夏秋之间暴雨频繁,每一平方公里内,每年水土流失量达到七千五百多公方,沟头沟沿的扩展每年约1—5公尺,水土流失非常严重。旧日农民过
Dujiaogou is located in the middle reaches of Wuding River and is an ordinary small town in Mizhi County, Shaanxi Province. Loess hilly and gully area, the terrain is wrongly complex, fragmented, more than 200 meters deep gully, there are 5 - 6 within each square kilometer, ranging from the hilly mountains, 30-40 per square kilometer A Is sparsely populated, loose soil, dry in the spring and early winter dry season, heavy rains between summer and autumn, within each square kilometer, annual soil erosion amount to more than 7,500 square meters, ditch extension of the ditch along about 1-5 Meters, soil erosion is very serious. Old peasant past