氮循环及植物对氮素吸收特点  

NITROGEN CYCLE AND ITS UPTAKE BY PLANT

作　　者：康清[1] 马晓林[1] 徐隆华[1] 王慧春[1] 

机构地区：[1]青海师范大学生命与地理科学学院,青海西宁810008

出　　处：《青海草业》2014年第2期23-25,22,共4页Qinghai Prataculture

基　　金：国家自然科学基金项目(31260127;31172247);青海省科技厅国际合作项目(2010-H-809);教育部春晖计划(Z2009-1-81010);教育部科学技术重点项目(209133);青海师范大学科技创新项目(019040910)资助

摘　　要：氮是植物需求量最大的矿质营养元素,是植物正常生长发育所必需的营养元素之一,同时,氮又是农业生产和生态系统生长发育最受限制的营养元素之一。植物对氮素的选择和吸收利用均受其种类本身、生长环境、氮素形态等多因素的影响。本文就生态系统中氮素循环及植物对氮素吸收利用特点进行了综述和讨论,并结合国内外在该领域的研究现状对其研究前景进行了展望。Nitrogen not only is one of the largest mineral nutrition elements,but also one of the essential nutrient elements for normal growth of plant,at the same time,the nitrogen is a main limiting factor in plant growth.The choice and uptake of nitrogen by plants in ecological system are controlled by their types,growth environment and nitrogen forms.This paper mainly summarized the nitrogen cycle in ecological system,and analyzed the characteristic of their nitrogen uptake and utilization.The prospect in this research field was discussed.

关 键 词：生态系统 氮吸收 氮循环 

分 类 号：S812.6[农业科学—草业科学]