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Size of Microbial Biomass in Soils of ChinaEnglish Full Text

WANG YAN, SHEN QIRONG, YANG ZHENGNING and YU LING(Nanjing Agricultural Univertity, Nanjing 210095(China))

Abstract: he microbial biomass C, N and P of soils all over china were determined in this study to study theiraffecting factors. The results, about 100-417 mg C kg ̄(-1) soil, 18.51 mg N kg ̄(-1) soil and 4.4-27.3 mg Pkg ̄(-1) soil, showed the biomass C, N and P in linear relationship with the soil total organic C, toal N andsoil organic P. The ratios of C: N and C: P , ranging from 5.6 to 9. 6 and from 11.2 to 48.4 respectively, wereaffected by soil pH, texture, crop rotation, macrocliniatc. etc. The ratio of C:N in soil biomass increasesgradually from the north to the south in China.
  • Series:

    (D) Agriculture

  • Subject:

    Fundamental Science of Agriculture; Agronomy

  • Classification Code:

    S154.3

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