低等植物固氮在草原氮素循环中的作用  

The Role of Nitrogen Fixation of Lower Plants in Nitrogen Cycle on the Grassland.

作　　者：徐兴良[1] 关秀清[1] 

机构地区：[1]中国科学院植物研究所

出　　处：《中国草地》1999年第2期68-72,共5页Grassland of China

基　　金：中国科学院内蒙古草原生态系统定位站基金

摘　　要：以内蒙古草原为主，阐述了几种主要低等固氮植物的生态分布和固氮特性及在草原氮素循环中的作用，讨论了目前还需深入研究的一些问题。Up to date, biological nitrogen fixation is the main source of soil nitrogen. Especially on the arid and semi-arid grasslands, biological nitrogen fixation is more important. This paper, mainly based on the grassland in Inner Mongolia, summarizes ecological distribution and charateristics of nitrogen fixation of some main nitrogen-fixing lower plants and the role in the nitrogen cycle on the grassland. It also discusses some problems on which research should be deeply done. At the same time, the application prospective is estimated.

关 键 词：低等植物 固氮 氮素循环 草原 生物固氮 

分 类 号：S812[农业科学—草业科学] Q945.13[农业科学—畜牧学]