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本文利用前人成果资料，结合地区旱涝历史资料，采用持续和间隔年法、百分数法及太阳黑子低值周期，得出土默特川旱涝基本规律，并用岱海涨落验证所得规律的正确性。
In this paper, based on the historical data of past droughts and floods, the basic laws of Dumengchuan drought and flood were obtained by using the continuous and interval year method, the percentage method and the low sunspot cycle. Sex.