Abstract
In order to optimize the fuzzy comprehensive evaluation model, verify the soil pollution stage in tea Planting surface area of northeast Guizhou plateau mountain area. Using the principle of minimum relative information entropy and combined Pollutants exceed the standard ratio method and Double weight exceeds the standard weighting method to form the comprehensive weight for optimized the traditional fuzzy comprehensive evaluation model. Then this paper evaluated the soil pollution in the main planting areas of tea. The results showed that: The optimized fuzzy comprehensive evaluation model which integrated the soil heavy metal concentration and toxicity in the calculation of the weights of evaluation factor, the evaluation results is more scientific; the origin of tea soil cleaning rate up to 38.81%, still cleaning rate of 61.19%, so there is no soil polluted area, which proves that the soil environmental quality in the plant of tea is preference.
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