3Schnitzer M. Soil organic matter- the next 75 years [ J ]. Soil Science, 1991, 151 (1): 45-47.
4Jshii K, Fukui M. Microbial succession during a composting process as evaluated by denaturing gradient gel electrophoresisanalysis [ J ]. Journal of Applied Microbiology, 2000, 89 : 768 - 777.