5Evans H J,Burris R H. Highlights in biological nitrogen fixation during the last 50 years[C]. In: Stacey G, Burris R H, Evans H J, eds. Biological Nitrogen Fixation [A]. New York, London: Chapman & Hall, Inc,1992.1
6Lu J X. Research on the chemical modeling of biological nitrogem fixation n the new china-an overview of research carried out at the Fujian Institute during the 1970s and the early 1980s[C]. in: Hong G F, ed. The Nitrogen Fixation and Its Research in Chin
7Chen W, Wang E, Wang S, et al. Characteristics of Rhizobium tianshanese sp. nov. a moderately and slowly growing root nodule bacterium isolated from an arid saline environment in Xinjiang, people's Republic of Chinn[J]. Int. J. Syst. Bacteriol., 1995, 45(
8Wang E T, P van Berkum, Chen W X, et al. Rhizobium huautlense sp.nov.,a symbiont of Scsbania berbacae which has a close phylogenetic relationship with Rhizobium galegae[J]. Int. J. Syst. Bacteriol., 1998, 48:687-699
9Wang E T, P van Berkum, Chen W X, et al. Diversity of rhizobia associated with Amorphae fruticosa isolated from Chinese soil and discription of Mesorhizobium amorphae sp.nov. [J]. Int. J. Syst Bacteriol., 1999, 49:51-65
10Carnahan J E, Mortenson L E, Mower H F. et al. Nitrogen fixation in cell-free extracts of Clostridium pasteuranium [J]. Biochim Biophys Acta,1960, 38:188
