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本文应用模糊数学原理对皖南烟区烤烟氮素的施用量进行综合评判。结果表明：各处理在亩施相同的磷钾肥的条件下，以亩施３～６ｋｇ纯氮的处理，烤烟内外观综合指标达较好水平。
In this paper, fuzzy mathematics is applied to evaluate the amount of nitrogen applied in flue-cured tobacco in southern Anhui. The results showed that under the condition of the same phosphorus and potassium fertilizers, the comprehensive index of internal and external flue-cured tobacco reached the better level with 3 ~ 6kg pure nitrogen.