根际溶氧量在水稻氮素利用中的作用机制研究  

Effect of Rhizosphere Dissolved Oxygen on Nitrogen Utilization of Rice

作　　者：赵霞[1] 徐春梅[1] 王丹英[1] 陈松[1] 计成林[1] 陈丽萍[1] 章秀福[1] 

机构地区：[1]中国水稻研究所水稻生物学国家重点实验室,杭州310006

出　　处：《中国水稻科学》2013年第6期647-652,共6页Chinese Journal of Rice Science

基　　金：国家自然科学基金资助项目(31171502);国家科技支撑计划资助项目(2011BAD16B14)

摘　　要：稻田淹水使水稻根际溶氧量处于较低水平,导致土壤理化性状及微生物群落结构发生一系列的变化,直接影响氮素的硝化、反硝化和矿化作用。改变土壤各形态氮素的比例,不利于植株对氮素的吸收和利用。本文从水稻对不同氮素形态的吸收利用、根际溶氧量对水稻氮吸收代谢的作用、根际溶氧量对水稻氮素利用率的影响等三个方面综述了国内外相关研究进展,同时结合本课题近年来有关水稻氮氧互作机制的研究结果,对今后相关研究作了展望。Low rhizosphere dissolved oxygen in waterlogged paddy, leads to a series of changes in soil physical and chemical properties and soil microbial community structure, directly or indirectly affecting the nitrogen cycling and utilizing process, including nitrification, de-nitrification, mineralization, as well as the ratio of nitrogen forms in soil （NH4＋-N and NO3 -N） . This circumstance is unfavorable to N absorption and utilization. This review summarized the progresses in research at home and abroad from three aspects such as absorption and utilization of different forms of nitrogen, the effect of rhizosphere dissolved oxygen on nitrogen absorption and metabolism in rice. Also, by considering the results of research on rice nitrogen oxygen interaction mechanism of our team in recent years, the future research was discussed.

关 键 词：根际溶氧量 水稻 氮素利用 

分 类 号：S511[农业科学—作物学]