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根据对照分析广西历年干旱面积及作物需水要求 ,确定采用连续数日持续少雨或无雨作为干旱的监测指标。各季节的干旱雨量标准为 :旱作春旱 :连续≥ 2 0 d平均日雨量≤ 1 mm且每日雨量 1 5mm;水稻春旱、连续 30 d总雨量≤ 1 30 mm且每日雨量 50 mm;夏旱 :连续≥ 2 0 d平均日雨?
According to the comparative analysis of drought area and crop water requirement of Guangxi over the past years, it is determined that the monitoring indicators of continuous drought or no rainfall as drought indicators for several consecutive days. The standard of arid rainfall in each season is dry drought in spring: the average daily rainfall of ≥ 1 mm for continuous ≥ 20 days and the daily rainfall of 1 5 mm; the total rainfall of 130 mm for spring drought, 30 days of continuous rainfall and the daily rainfall of 50 mm ; Summer drought: continuous ≥ 20d average daily rainfall?