Bardgett R D, leemans D K. The short-term effects of cessation of fertilizer application,liming and grazing on microbial biomass and activity in a reseeded upland grass land soil [J]. Biology and Fertility of Soils,1995,19:148-154
[5]
Bristow A W, Jarvis S C. Effects of grazing and nitrogen fertilizer on the soil microbial biomass under permanent pasture [J]. Journal of the Science of Food and Agriculture,1991,54(1):9-22
[6]
Lovell R D, Jarvis S C, Bardgett R D. Soil microbial biomass and activity in long-term grassland of management changes [J]. Soil Biology and Biochemistry,1995,27(7):969-975
Brookes P C, Andrea L, Pruden G, et al. Chloroform fumion and the release of soilnitrogen A rapid direct extraction method to measure microbial biomass nitrogen in soil [J]. Soil Biology and Biochemistry,1985,12(6):837-842
[24]
Vance E D, Brookes P C, Jenkinson D S. An extraction method for measuring soil microbial biomass C [J]. Soil Biology and Biochemistry,1987,19(6):703-707
[25]
Brookes P C, Powlson D S, Jenkinson D S. Measurement of microbial biomass phosphorus in soil [J]. Soil Biology and Biochemistry,1982,14(4):319-329
[26]
Brookes P C, Powlson D S, Jenkinson D S. Phosphorus in the soil microbial biomass [J]. Soil Biology Biochemistry,1984,16(2):169-175