青海浅山系指农业区河流两岸的低山丘陵,这个地区耕地面积占全省总耕地的一半以上。无灌溉条件,地下水位深,耕地一般高出河床200—300米。降水量少,年平均约430毫米,而且分布不均,夏秋多雨,冬 Qinghai shallow mountains refers to the lowland hills on both sides of the river in the agricultural area. The cultivated area in this area accounts for more than half of the total cultivated land in the province. No irrigation conditions, deep groundwater, arable land generally 200-300 meters above the riverbed. Precipitation less annual average of about 430 mm, and the uneven distribution of summer and rainy, winter