镇安县地处秦岭南麓中段,是一个“九山半水半分田”的土石山区。山高谷深,坡陡地薄,水土流失年甚一年,粮食产量低而不稳。70年代初全县粮食总产量只有4031万公斤,亩产只有109公斤,人均占有粮仅为171公斤,农民人均纯收入仅42.05元,最多时每年要吃返销粮600万公斤。贫困始终困绕着这里的人们。 Zhen’an County is located in the middle of the southern foot of Qinling Mountains, is a “nine hills semi-sub-fields” of rock and mountain. High mountains and valleys, steep slopes and thin, soil erosion year even year, low and unstable grain output. In the early 1970s, the county’s total grain output was only 40.31 million kilograms. Only 109 kilograms per mu was produced. The per capita grain consumption was only 171 kilograms. The per capita net income of peasants was only 42.05 yuan. At most, 6 million kilograms of returned grain should be consumed each year. Poverty has always been around the people here.