Soil microbial biomass carbon in the tea plant root layer increased significantly with the age of tea plants.
茶树根层土壤微生物生物量碳随树龄增长而增加，但与茶树根层土壤可培养微生物总量无显著相关。
The ANOVA results indicate that the soil microbial biomass carbon concentration among treatments differs significantly.
方差分析表明，各处理土壤微生物量碳含量之间差异达显著水平。
Soil microbial biomass carbon, nitrogen and its C/N ratio are the important biological indicators characterizing soil quality.
土壤微生物生物量C和N及其C/ N比是反映土壤质量的重要生物学指标。
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