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。
2.
The number of mold , bacteria , culturable microorganisms , aerobic nitrogen - fixing bacteria , anaerobic nitrogen - fixing bacteria , aerobic cellulose decomposition microbes , anaerobic cellulose decomposition microbes were the most in 16 - year - old organic tea garden , and the biomass carbon and nitrification of edaphon were also the strongest 霉菌、细菌、可培养微生物总量、好气性自生固氮菌、嫌气性自生固氮菌、好气性纤维分解菌、嫌气性纤维分解菌均以16年生茶园最多，土壤微生物生物量碳和硝化作用也以16年生茶园最强。
