甘肃定西,一个以干旱少雨闻名的地方,年降水量仅300多毫米,年蒸发量高达1400多毫米,人均可利用水资源量仅130立方米,约为全国平均水平的6%,是全国最为严重的干旱地区之一。早在1958年,甘肃就启动了首次引洮工程,冀望把黄河水系重要支流洮 Gansu Dingxi, a well-known place for drought and drought, the annual rainfall is only 300 mm and the annual evaporation is as high as 1400 mm. The available water resources per capita is only 130 m3, about 6% of the national average, which is the most One of the most arid areas. As early as 1958, Gansu started the first project of inducing irrigation, hoping to transfer the important tributaries of the Yellow River