渭北高原主产小麦、玉米等粮食作物,小麦占耕地的一半。年降水量600毫米左右,蒸发量小,土壤持水性好,和我省其他早地相比,旱灾的频率和强度均较小,具备建设高产农业区和商品粮基地的有利条件。但因土地瘠薄,肥料缺乏,粮食产量低而不稳。据在当地调查, Weibei Plateau produced mainly wheat, corn and other food crops, wheat accounted for half of cultivated land. Annual precipitation is about 600 millimeters, evaporation is small, and soil water holding capacity is good. Compared with other early growing areas in our province, the frequency and intensity of drought are small, which has the favorable conditions for building high-yield agricultural areas and commodity grain bases. However, due to barren land, lack of fertilizers and low and unstable grain output. According to a local survey,