南京林业大学学报(自然科学版) ›› 2011, Vol. 35 ›› Issue (05): 121-124.doi: 10.3969/j.jssn.1000-2006.2011.05.027

• 油茶高效栽培研究专栏 • 上一篇    下一篇

不同油茶林分联合固氮菌的分离及固氮效能分析

蔡苗1,彭方仁1*,陈隆升2,陈永忠2   

  1. 1.南京林业大学森林资源与环境学院,江苏南京210037;2.湖南省林业科学院,湖南长沙410004
  • 出版日期:2011-09-30 发布日期:2011-09-30
  • 基金资助:
    收稿日期:2010-05-13修回日期:2010-08-05基金项目:“十一五”国家科技支撑计划(2009BADB1B04)作者简介:蔡苗(1986—),硕士生。*彭方仁(通信作者),教授。Email: frpeng@nju.edu.cn。

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

摘要: 通过对湖南省6种有代表性的油茶林分联合固氮菌的调查,研究了不同林地根际联合固氮菌的分布规律,筛选出了优良的固氮菌株并对其固氮效能进行了测定分析。结果表明:不同油茶林分根际联合固氮菌的数量存在显著差异,野生林较人工林高,山地较圃地高,青壮林较幼龄林高;根据固氮效能分析可知,从油茶林分中可分离到高效固氮菌株,高效固氮菌株在野生青壮林根内部分布最多。

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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