JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2011, Vol. 35 ›› Issue (05): 121-124.doi: 10.3969/j.jssn.1000-2006.2011.05.027

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Isolation of associativenitrogenfixing bacterium from typical Camellia forests and analysis of nitrogen efficiency

CAI Miao1, PENG Fangren1*, CHEN Longsheng*   

  1. 1.College of Forest Resources and Enviroment, Nanjing Forestry University, Nanjing 210037, China; 2.Hunan Forestry Academy, Changsha 410004, China
  • Online:2011-09-30 Published:2011-09-30

Abstract: The associativenitrogenfixing bacterium was investigated in six typical Camellia forests with different managements, site conditions and ages in Hunan province. Screening nitrogen strains were carried out and their nitrogen ability was detected by nitrogen efficiency.The analysis of Azotobacter populations indicates that the wild>the planted forest, mountainous forest>flat(nursery), the adult forest>the young forest. The analysis of nitrogen efficiency indicated that the largest number of strains was distributed in the roots of wild adult forests. The results proved high nitrogen efficiency strains that can be separated from the Camellia, and it is the foundation to develop and apply bacterial fertilizer.

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