黄土高原在我国的甘肃、青海、陝北和山西、內蒙古部分地区,幅員辽闊,雨量稀少,属干旱和半干旱区。全区秃山光岭举目皆是,每当雨季,水土流失甚为严重。鉴于上述的自然条件,农业生产有如下特点: 1.人少地多,耕作粗放,产量不高。如甘肃武山县部分地区粮食亩产70—80斤,有些地区常遭风、砂、冰雹等自然災害的影响,产量更是不稳定。2.由于缺乏劳力,目前西北地区的土地利用率很 Loess Plateau in China’s Gansu, Qinghai, northern Shaanxi and Shanxi, parts of Inner Mongolia, a vast, scarce rainfall, is arid and semi-arid areas. Bald mountain Guangling lifts all eyes, whenever the rainy season, soil erosion is very serious. In view of the above natural conditions, agricultural production has the following characteristics: 1. People have more land, extensive farming, and less yield. For example, grain yield per mu in Wushan County, Gansu Province, is 70-80 kg per mu. In some areas, it is often affected by natural disasters such as wind, sand and hail and the output is even more unstable. Due to lack of labor, the land utilization in the northwest is very high