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克山县古北公社东风大队,总共有7956亩地。其中耕地4874亩,96%是岗、坡地,水土流失严重,自然条件差。1964年调查,全大队水土流失面积达5836亩,占总土地面积的73.3%。形成大小水打沟191条,全长17.67里,沟壑密度每平方公里3.32公里,被沟壑吞蚀的土地有1056亩。严重的土地流失造成了耕地撂荒;从1960年到1964年达850多亩;黑土层由原来的3尺下降到1尺左右,有60%的地块已露出了黄土。由于水土流失严重,土地由肥变瘠薄,产量越来越低。亩产一值徘徊在70斤左右。群众说:“破皮黄,破皮黄。白使劲,不打粮,生活
Keshan County Gubei Dongfeng brigade, a total of 7956 acres of land. Among them, 4874 mu of arable land is cultivated, 96% of which are hills and slopes with serious soil erosion and poor natural conditions. Investigation in 1964, the entire brigade soil erosion area of 5836 mu, accounting for 73.3% of the total land area. The formation of the size of the water ditch 191, a total length of 17.67 miles, gully density of 3.32 kilometers per square kilometer, gully swallowed 1056 acres of land. Severe loss of land caused a shortage of cultivated land; it reached 850 mu from 1960 to 1964; the black soil layer decreased from 3 feet to about 1 foot, and 60% of the land had exposed loess. Due to the serious soil erosion, the land becomes barren by the change of fertility and the yield is getting lower and lower. A value of hovering around 70 pounds per mu. The masses said: "The skin is yellow and the skin is yellow