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柏树大队位于崇信县北的柏树源,地处黄土高原沟壑区的残原地带,地形十分破碎,全队六千二百亩耕地中就有一至四华里长的沟壕八条,原面坡度约3—5度。但由于侵蚀作用,农地内沟壕密布,有的深在三米以上,致使小地形波状起伏,变化复杂。当地群众形容是“三壕六洼,壕深洼大”。横向坡度达6—8度。水土流失的结果,不仅使耕地被割切的难于耕作,同时由于肥沃表土的流失,庄稼生长发育困难,产量低下,解放前亩产不过六、七十斤,大片耕地是广种薄收,有的逐渐荒废。
The cypress tree brigade located in northern Shixin County cypress source, is located in the loess plateau gully area of the remnants of the strip, the terrain is very fragmented, the team of 6200 acres of arable land there are one to four long trenches eight, the original slope of about 3-5 degrees. However, because of erosion, the ditches in the agricultural land are densely covered and some of them are more than three meters deep, resulting in small undulating waves and complicated changes. Described by the local people is “three moat six depression, deep moat depression.” Horizontal slope of 6-8 degrees. As a result of soil and water loss, not only the cultivated land is cut and harvested but also the crops are difficult to grow due to the loss of fertile topsoil and the yield is low. However, the yield per mu before the liberation is only six or seventy kilograms. .