贵州湄潭县茶园土壤和茶叶中的氟含量分析

Determination of Water-Soluble Fluorine in Tea Leaf and Soil in Tea Plantation of Meitan in Guizhou Province

通过测定贵州省湄潭县茶园土壤及茶叶中的水溶性氟含量,研究其与土壤理化性质的关系.结果表明,上、下层土壤中水溶性氟含量分别为2.76～10.12 mg/kg（均值5.05 mg/kg）和2.59～9.50 mg/kg（均值4.51 mg/kg）.湄潭茶叶水溶性氟含量为老叶187.03～627.44 mg/kg（均值333.69 mg/kg）、嫩叶22.91～104.24mg/kg（均值46.34 mg/kg）.湄潭茶园土壤水溶性氟与土壤有机质呈显著正相关,茶叶水溶性氟与土壤水溶性氟呈显著正相关.

The water-soluble fluorine in tea leaf and soil in tea plantation of Meitan in Guizhou province were determined. The relationship between them was studied. The results showed that the content of water soluble fluorine in top soil varied from 2.76 mg/kg to 10.12 mg/kg （average 5.05 mg/kg）. That in sub soil varied from 2.59 mg/kg to 9.50 mg/kg （average 4.51 mg/kg）. The contents of water-soluble fluorine in old and new leaf were from 187.03 mg/kg to 627.44 mg/kg （average 333.69 mg/kg）, and from 22.91 mg/kg to 104.24 mg/kg （average 46.34 mg/kg）, respectively. The correlation between water-soluble fluorine and organic matter in soils ,water-soluble fluorine in leaf and soils were significantly positive.