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采用候、旬的降水距平百分率，选取全省17个代表站，对多年历史资料进行统计和分析，界定了旬干旱和侯洪涝指标。并对历史上发生的轻度干旱和洪涝年进行检验。结果表明，该界定指标符合实际。
Adopting the percentage of precipitation anomaly in the last and last ten days, 17 representative stations in the province were selected to conduct statistics and analysis on many years of historical data and define the indicators of drought and floods in the past ten years. And to test the history of mild drought and flood years. The results show that the definition of indicators in line with reality.