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Effect of Long-Term Application of Chemical Fertilizers on Microbial Biomass and Functional Diversity of a Black Soil[J]. KONG Wei-Dong1, ZHU Yong-Guan1, FU Bo-Jie1, HAN Xiao-Zeng2, ZHANG Lei3 and HE Ji-Zheng1,2 1Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085 (China). 2Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Harbin 150040 (China) 3Institute of Microbiology, Chinese Academy of Sciences, Beijing 100080 (Ch
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