Microbial biomass nitrogen的意思|示意

The factors affecting soil microbial biomass nitrogen and the relationship between soil microbial biomass nitrogen and mineralizable nitrogen are reviewed.

在杨凌中等肥力红油土上进行大田试验 ，研究土壤生物体氮的变化及影响因子。

In low fertility soils, the effects of organic materials on soil microbial biomass nitrogen was rather apparent, about 4 times of high fertility soil.

土壤肥力不同，有机物料对微生物体的影响效果不同，在低肥力土壤上的效果突出，约为高肥力土壤的4倍。

The mechanism of Soil organic matter and wheat straw decomposition were discussed through the accumulated CO2, microbial biomass and inorganic nitrogen content.

测定秸秆和土壤有机质分解过程中CO_2释放量、土壤微生物量和土壤无机氮含量变化，探讨土壤有机质和秸秆分解的规律。

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。

Results showed:The soil organic carbon, nitrogen and microbial biomass C? N of different kinds of wetlands were obviously differences, and decreased with increasing depth at profiles.

结果表明：不同类型湿地土壤碳、氮和微生物C、N有明显差异，而且均随深度的增加而降低。

Applying more nitrogen would increase the content of soil microbial biomass nitrogen, but might result in large amount of nitrate residue in soil and suspected to leaching loss.

继续增加施氮量，土壤微生物量氮含量增加，但土壤中残留大量硝态氮，易淋溶损失。