阐述了1991年降雨和洪水的特征，分析了产生洪涝灾害的原因，并对今后的治理措施进行了探讨。

The characteristics of rainfall and flood are illustrated. The reasons of disaster are analyzed and the measures of flood and water logging control are also discussed.

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他们无法生产出足以满足家人需求的庄稼，其部分原因是有可能更加恶化的干旱和洪涝灾害。

They are unable to produce enough crops to coverhousehold needs in part because of drought and floods, which couldworsen.

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本文对青海省洪涝灾害的严重情况作了分析，针对产生洪涝灾害的主要原因，提出各项防治对策。

The paper analyzes the serious conditions of flood calamity in Qinghai Province. To counter to the main season of flood calamity, it puts forward the various prevention countermeasure.

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