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我国受季风气候影响,旱涝灾害频繁,每年部有上亿亩土地受害,尤其是黄淮海平原,历史上平均不足两年就有一次旱灾或涝灾。建国20年来,鲁西北发生7次大旱,9次大涝。1952—1962年间,河北省平均每年涝灾面积1673万亩,旱灾面积6150万亩。解放后虽进行了大量的水利建设,对海河,淮河和黄河等流域的骨干河道进行了治理,但是田间工程不配套,土地不平整,
Affected by the monsoon climate in our country, droughts and floods are frequent, with hundreds of millions of mu of land harmed each year, especially the Huang-Huai-Hai Plain. On average, drought or floods have occurred in less than two years in history. In the 20 years since the founding of the People’s Republic, seven major drought and nine floods occurred in the northwest of Shandong Province. Between 1952 and 1962, the average annual flooding area in Hebei Province was 16.73 million mu and the droughty area was 61.5 million mu. After the liberation, although a great deal of water conservancy construction was carried out, the key rivers in the Haihe River, the Huaihe River and the Yellow River were controlled. However, the field works are not complete and the land is not flat,