水源短缺使工农业生产蒙受了巨大的损失,也给人民的生活带来了诸多不便,开辟新的淡水资源已成为当务之急。目前,跨流域引水、开挖地下水等人们常用的办法,存在着一些难以克服的问题,如:工程量大、浪费土地、环境发生变化等。为此,一种有效的开发利用大气水资源方法——人工降水应运而生。“人工降水”简单地说,就是人为地使大气降水。目前,人工降水是通过飞机或高射炮把盐粉或干冰、氯化铵、碘化银等催化剂撒播于云层之中,人为地提高云内的凝结核浓度,使大气中的水汽加速凝 The shortage of water resources has caused tremendous losses to industrial and agricultural production and brought inconvenience to people’s lives. It has become a top priority to open up new freshwater resources. At present, there are some insurmountable problems commonly encountered in water diversion and groundwater excavation, such as heavy construction, waste of land and environmental changes. To this end, an effective way to develop and use of atmospheric water resources - artificial precipitation came into being. In short, “artificial rainfall” is the artificial precipitation of the atmosphere. At present, the artificial precipitation is through the aircraft or anti-aircraft gun salt or dry ice, ammonium chloride, silver iodide and other catalysts sowing in the clouds, artificially increase the concentration of condensed nuclei in the cloud, the atmospheric water vapor accelerated