“湄潭翠芽”适茶土壤肥力质量评价

An Evaluation of the Soil Fertility for the Growth of "Meitancuiya(Tea Sprout)"

为了对湄潭翠芽茶基地的土壤肥力进行科学评价,分别在茶基地五个产茶区采集有代表性土样,采用高温外热重铬酸钾氧化容量法、微量凯氏法、碳酸氢钠浸提钼蓝比色法、乙酸铵浸提—原子吸收分光光度法,分别对土壤有机质、全氮、有效磷和有效钾进行了测定,结果显示有机质、全氮、有效钾的含量平均值都达到Ⅰ级水平,有效磷最高只达到Ⅱ级水平,最低处于极缺水平。

Such methods as high temperature external heat potassium dichromate oxidation volumetric method,micro kjeldahl method,sodium bicarbonate extraction molybdenum blue method,and ammonium acetate extraction-atomic absorption spectrometry method are applied to make a scientific appraisal of the soil fertility of the base for tea sprout of Meitan（Meitancuiya） and to determine the contents of soil organic matter,total nitrogen,effective phosphorus and available K.The findings are as follows： the mean contents of soil organic matter,total nitrogen,and available K reach the first level,and the content of effective phosphorus reaches the second level and,sometimes is very exiguous.