enkinson D S. The determination of microbial biomass carbon and nitro gen jn soils[A]. In: J.R. wilson(ed) Advances in nitrogen cycling in agricultural ecosystems[C] C.A.B. International, Wallingford. 1988. 368-386.
[4]
Aslam T, Choukhary M A, Saggar S. Tillage impacts on soil microbial biomass C, N and P, earthworms and agronomy after two years of crop ping following permanent pasture in New Zealand[J]. Soil and Tillage Research,1999,51(1-2):103-111.
[5]
Robertson F A, Myers R J K, Saffigna P G. Carbon and nitrogen miner alization in cultivated and grassland soils in subtropical Queensland[J]. Australian Journal of Soil Research, 1993,31(5):611-619.
[6]
Chan K Y, Bowman A M, Friend J J. Restoration of soil fertility of degraded vertisols using a pasture including a native grass[J].Tropical Grassland,1997, 31(2):145-155.
[7]
Gi jisman A J, Oberson A, Friesen D K, Sanz J I. Nutrient cycling through microbial biomass under rice-pasture rotations replacing native savanna[J]. Soil Biology and Biochemistry, 1997, 29(9-10):1433-1441.
