土壤有效铅与土壤微生物生物量碳及土壤脲酶呈显著负相关。
Correlation analysis indicated that there were significantly negative correlations between soil biomass carbon and urease activity with available lead content in the soil.
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。
Soil microbial biomass carbon in the tea plant root layer increased significantly with the age of tea plants.
各处理土壤微生物生物量碳、氮含量因培养时期不同而异。因此，生产中利用秸秆时应考虑不同施肥处理秸秆养分含量的差异。
Therefore, in agricultural practices, the differences in the nutrient contents of straw due to different fertilization should be considered when the straw was to be added into soil.
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