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会宁县是我省的主要干旱县之一,年降水量仅300—400毫米,为蒸发量1780毫米的16.9—22.5％,且分布不匀,年际变异大,旱象常越季跨年。据记载,自清康熙年间至解放的200多年,每三、五年必有一次旱灾。又由于缺少水源,极少灌溉之利,因此,每逢大旱,农民常背井离乡,出外乞讨,冻馁而死者不乏其人。建国后的30余年中,不同程度的旱灾达22次,
Huining County is one of the major arid counties in our province. The annual precipitation is only 300-400 millimeters, accounting for 16.9-22.5% of the 1780 millimeters of evaporation, with uneven distribution and large interannual variation. According to records, since the Qing Emperor Kangxi years to liberation of 200 years, every three or five years there must be a drought. In addition, due to the lack of water resources, there is little need for irrigation. Therefore, whenever there is a drought, peasants often leave their homes and go abroad for begging. In the more than 30 years after the founding of the People’s Republic of China, 22 different degrees of drought were reached,