The nutrients content, the number of microorganism and activity of edaphon in soil of Gutongling 4-year-old, 10-year-old and 16-year-old organic tea garden were measured.

• 摘要对湖南湘阴县兰岭茶厂古桐岭不同种植年限的4年生、10年生、16年生有机茶园，分别进行了土壤养分含量、微生物类群数量及活性测定。