据1986年底统计,我国城市数己达353个。由于用水集中,超采严重,280个城市日均缺水总量达1200万t,其中14个沿海开放城市日缺水190万t,以致北方地区出现地下水下降漏斗区40个,总面积超过1.5万km~2。笔者认为,城市缺水可利用蓄雨来缓解,具体思路为一个原则,一条界限,十项措 According to the statistics at the end of 1986, the number of cities in our country has reached 353. Due to the concentration of water and over-exploitation, the daily water deficit of 280 cities totaled 12 million tons, of which 1.9 million tons of water were missing daily in 14 open coastal cities, resulting in 40 sinking funnels in the northern region with a total area exceeding 1.5 Wan km ~ 2. The author believes that the city water shortage can be used to ease the rain, the specific ideas for a principle, a boundary, ten measures