title: [Dynamics of microbial biomass C in a black soil under long-term fertilization and related affecting factors].
abstract: The effect of long-term fertilization on the dynamics of microbial biomass C in a typical black soil of Northeastern China was studied in a field trail treated by different fertilizations. The results showed that the amount of soil microbial biomass C under different fertilizations varied significantly with growth stages. It was the highest in farmyard manure (M2 and M4) treatments, with a less seasonal fluctuation, second in NPK treatment, the peak at sowing period, and the lowest in CK, the peak at wax maturity stage. No significant correlation was found between the dynamic changes of soil microbial biomass C and soil biological, physical and chemical properties in all treatments, but the correlation of soil microbial biomass C with the contents of N, P and K in plants and that of crude protein in grain was significantly positive.
authors.affiliation: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang. lidp1964@sohu.com
authors.forename: Dongpo
authors.initials: D
authors.lastname: Li
authors.forename: Zhijie
authors.initials: Z
authors.lastname: Wu
authors.forename: Lijun
authors.initials: L
authors.lastname: Chen
authors.forename: Ping
authors.initials: P
authors.lastname: Zhu
authors.forename: Jun
authors.initials: J
authors.lastname: Ren
authors.forename: Chang
authors.initials: C
authors.lastname: Peng
authors.forename: Chenghua
authors.initials: C
authors.lastname: Liang
mesh_terms: D002244:Carbon / Q000032:analysis*; D015169:Colony Count, Microbial; D018556:Crops, Agricultural / Q000254:growth & development*; D005308:Fertilizers / Q000009:adverse effects; D012987:Soil / Q000032:analysis*; D012988:Soil Microbiology
chemical_list: D005308:Fertilizers; D012987:Soil; D002244:Carbon