我国历史上是一个传统的以农业为主的国家,但由于所处的自然气候因素和生产低下的原因,水旱灾害一直频繁发生。据历史资料记载,在1949年解放前的2665年间,发生过较大的水灾1092次,较大的旱灾1056次,几乎平均每年有一次较大的水灾和旱灾。 自古以来,我们的祖先就有管理水利、治理江河、与水旱灾害作斗争的丰富经验,历代王朝也都把水利建设作为一项重要 Historically, our country is a traditional agriculture-based country. However, flood and drought disasters have been frequent due to the natural climate and the low production. According to historical records, during the 2665 years before the liberation in 1949, there were 1092 floods and 1056 major ones, with an average annual flood and drought occurring on average almost once every year. Since ancient times, our ancestors have extensive experiences in managing water conservancy, governing the rivers and fighting floods and droughts. The dynasties also regarded water conservancy as an important task