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- [8] Effects of Long-Term Combined Application of Organic and Mineral Fertilizers on Microbial Biomass,Soil Enzyme Activities and Soil Fertility[J]. LI Juan~1 ZHAO Bing-qiang~1 LI Xiu-ying~1 JIANG Rui-bo~1 So Hwat Bing~2 1 Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences(CAAS).Beijing 100081,P.R.China 2 School of Land and Food Sciences.The University of Queensland.Brisbane Qld 4072.Australia.Agricultural Sciences in China. 2008(03)