陕西省乾县乾陵公社位于乾县旱塬丘陵沟壑区南缘的斜坡旱腰带上,地势处在700—900米的向阳斜坡面上,干旱少雨,蒸发量大,年均降雨量540毫米左右,属半干旱区。年均气温11.6—12.5℃,≥0℃的积温4,450—4,590℃。土壤以黄土类和土类为主。农作物以夏粮为主,占粮食作物的87.6％,夏粮以小麦为主,占夏粮作物的88.8％,是主要的粮食作物。1982年全社小麦面积19,100亩,总产784万斤,亩产 Qianling County, Shaanxi Province Qianling commune is located in dry County, arid plateau hills and ravines ravine the southern edge of the belt, the terrain at 700-900 meters sunny slope, drought, rainfall, with an average annual rainfall of about 540 mm , Is a semi-arid area. Average annual temperature 11.6-12.5 ℃, ≥ 0 ℃ accumulated temperature 4,450-4,590 ℃. Loess soil and soil dominated. The main crops are summer grains, accounting for 87.6% of the total. The summer grains mainly consist of wheat, accounting for 88.8% of the summer grain crops, and are the major food crops. In 1982 the whole area of ​​19,100 acres of wheat, with a total yield of 784 kg, mu