植物根系氮吸收过程的研究进展  

Research progress on nitrogen uptake by plant roots

作　　者：王宇通[1] 邵新庆[1] 黄欣颖[1] 王堃[1] 

机构地区：[1]中国农业大学动物科技学院,北京100193

出　　处：《草业科学》2010年第7期105-111,共7页Pratacultural Science

基　　金：国家科技支撑计划项目(2007BAD52B06-2);京承路都市型现代农业走廊工程科技示范项目(D08060500460803)

摘　　要：氮对植物的生长发育有着重要的作用,氮素也是植物根系从土壤中吸收最多的元素之一。因此,了解根系吸收氮素的机理和过程对检测生态系统的结构与功能有着重要的意义。土壤中的氮大体上可分为无机态和有机态两大类,植物能够吸收的有机态氮主要是氨基酸,而植物能够吸收利用的无机态氮主要是NO3-和NH4+。本研究较全面地总结了植物根系对氮的吸收和调控的机理,并在此基础上对该方面的研究进行了展望。Soil nitrogen is one of the mineral elements which can be absorbed by plant roots and is important for plant development.Therefore,the study of plant root N uptake becomes an important issue in predicting the structure and function of ecosystem.There are two types of N in the soil： inorganic N and organic N;the inorganic N which could be utilized was nitrate and ammonium,while the organic N mainly refers to amino acid.Present research summarized the mechanism of N absorbing and regulating by plant root,and future prospects on this research were put forward.

关 键 词：根系 硝态氮 铵态氮 氨基酸 

分 类 号：S184[农业科学—农业基础科学]