摘要
植物对K素的吸收和利用是一个复杂的过程。近年来,科学工作者在植物K素高效机理方面做了大量研究工作,有关K素效率及其评价的研究取得了长足的进展。本文简要综述了植物K素效率的概念、K素吸收效率的差异及其生理机制,讨论了土壤K库、根系特征、根系分泌物和根际微生物、K素在植株和细胞水平的分配和再分配、其他离子对K离子的替代作用、收获指数、研究当中常用的K素效率的评价方法及存在的一些问题,并介绍了分子生物学领域的最新相关研究成果。
The process of potassium uptake and utilization in plants is very complex. Recently, much work has been done on the research of mechanism of plant high K use efficiency and great positive results on plant K efficiency and its evaluation have obtained. This paper briefly summarized the concepts, differences and physiological mechanism of plant K use efficiency. The research reports on soil potassium sink, root characteristics, root exudates and microorganism, potassium translocation and relocation at both cellular and plant levels, substitution of other ions to K^＋, harvest index and some relative new results in the field of molecule biology has also been reviewed. Additionally some indices of K use efficiency and some related problems in using the indices are discussed as well.
出处
《土壤》
CAS
CSCD
北大核心
2010年第2期164-170,共7页
Soils
基金
中国科学院知识创新工程重要方向项目(KSCX2-YW-N-002)资助
关键词
钾素
土壤
吸收效率
利用效率
生理机制
Potassium, Soil, Uptake efficiency, Use efficiency, Physiologic mechanism
