共生固氮在农牧业上的作用及影响因素研究进展  

Review on studies on the important role of symbiotic nitrogen fixation in agriculture and livestock production and the factors affecting its efficiency

作　　者：曾昭海[1] 胡跃高[1] 陈文新[2] 隋新华[2] 赵晓萌[3] 

机构地区：[1]中国农业大学农学与生物技术学院草业工程研究中心,北京100094 [2]中国农业大学生物学院农业部农业微生物资源及其应用重点实验室,北京100094 [3]北京农学院生物技术系,北京102206

出　　处：《中国生态农业学报》2006年第4期21-24,共4页Chinese Journal of Eco-Agriculture

基　　金：国家跨越计划项目(2000-22);国家重点基础研究(973)发展规划项目(2001CB108905)资助

摘　　要：共生固N是生物固N的主体部分,具有固N效率高、应用范围广等特点。叙述了主要豆科作物年固N量及固N量占豆科作物本身所吸收N的比例,阐述了豆科作物在与非豆科作物间套轮作中固定N素的转移及对非豆科作物的影响,并介绍了影响豆科作物-根瘤菌共生体共生固N效率的主要因素。开展豆科作物-根瘤菌共生体系方面的研究对农业可持续发展具有重要意义。Symbiotic nitrogen fixation is the main part of BNF （biological nitrogen fixation） characterized by high efficiency and adopted in a wide range, and is of significant practicality as well. The amount of N2 fixed by different legume crops from the atmosphere, the proportion of plant N derived from the N2 fixation are introduced in this paper. And the N transferring from the legume to non-legume crops when they are intercropped, rotated or mixed with legume are discussed. At the same time, the main factors affecting the efficiency of symbiont between legume and Rhizobium are presented. The challenges that China is faced with are the increase of population, the decrease of land, resource decline and environmental deteriorate. To meet these challenges it is an effective way for sustainable agriculture to expand the research of symbiont between legume and Rhizobium.

关 键 词：生物固N 共生固N 豆科作物 间套轮作 

分 类 号：S154.381[农业科学—土壤学]