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我省地处内陆,远离海洋,降雨机会少,水资源较为紧缺。从降水量来看:我省的土地面积有45万平方公里,占国土面积的4.7%,而多年平均降水量约1368亿立米,相当于全国年降水总量的2.3%,可以看出,单位面积降水量还不到全国的一半。据1950～1974年,二十五年的灾害性气候分析,我省发生旱灾17次,平均一年半一次,高于全国的二年半一次。
The province is located inland, away from the ocean, less rainfall opportunities, water resources are more scarce. From the precipitation point of view: the province’s land area of 450,000 square kilometers, accounting for 4.7% of land area, while the average annual precipitation is about 136.8 billion cubic meters, equivalent to 2.3% of the total annual precipitation, we can see that the unit The area of precipitation is less than half of the country. According to the analysis of disastrous climate from 1950 to 1974 and twenty-five years, drought hit 17 times in our province, averaging one and a half years, which is higher than the national average of two and a half years.