了解土壤无机磷含量对土壤微生物量磷及碳磷比的影响。
Interference of soil soluble inorganic P in measurement of soil microbial biomass P;
各群落土壤微生物量磷含量均高于土壤速效磷，其季节动态均为单峰曲线，峰值出现在八月。
The seasonal variation of MBP could be described as an unimodal curve, and it was in August that the content of MBP reached its peak value in all communities.
土壤微生物生物量磷是植物磷素营养极其重要的来源，对土壤磷素的供给和调节起着重要作用。
Soil microbial biomass P is a valuable resource to plant P nutrient, and also play an important role in the transformaion of soil phosphorus.
土壤微生物量碳、氮、磷与植被类型和植被恢复年限关系密切。
Soil Cmic, Nmic and Pmic are significantly related with vegetation type and rehabilitation age.
研究结果表明，在整个培养过程中，仅加莠去津的土壤中微生物生物量碳、氮、磷的含量均显著降低，与对照相比，分别平均降低了13.5%，10.1%，20.0%。
Results showed that soil microbial biomass C, N, P significantly decreased after addition of atrazine. As composed with control, microbial biomass C, N and P decreased averagely 13.5%, 10.1%, 20.0%.
土壤微生物量中的磷是土壤有机磷最为活跃的部分，由于其周转快、极易矿化为植物有效磷而成为土壤有效磷的活性库。
Soil microbial biomass phosphorus, the relatively active fraction of soil organic phosphorus, was often considered as a labile pool of soil available phosphorus because of its short turnover time.
目前，测定土壤微生物量中的磷的方法并不统一，而熏蒸提取法的应用最为广泛。
At present, the measurement of soil microbial biomass phosphorus was non-uniform, but the fumigation-extraction method was used relatively widely.
设施土壤速效养分增加对土壤微生物量碳、氮、磷有明显影响。
Compared with available nitrogen, increased available phosphorus just had the opposite effects to soil microbial biomass.
结果表明，在各个土层中，两种林分下的土壤含水量、pH值、有机碳的含量以及微生物生物量磷均无显著差异。
Results showed that there were no significant differences in soil total organic carbon, soil moisture content, pH and soil microbial biomass phosphorus in each soil layer between the two plantations.
结果表明，在各个土层中，两种林分下的土壤含水量、pH值、有机碳的含量以及微生物生物量磷均无显著差异。
Results showed that there were no significant differences in soil total organic carbon, soil moisture content, pH and soil microbial biomass phosphorus in each soil layer between the two plantations.
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