引用本文:邵立威,孙宏勇,陈素英,张喜英. 根土系统中的根系水力提升研究综述[J]. 中国生态农业学报(中英文), 2011, 19(5): 1080-1085
SHAO Li-Wei,SUN Hong-Yong,CHEN Su-Ying,ZHANG Xi-Ying. An overview of root hydraulic lift in root-soil systems[J]. Chinese Journal of Eco-Agriculture, 2011, 19(5): 1080-1085
DOI:10.3724/SP.J.1011.2011.01080
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  下载PDF阅读器   关闭   
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 4416次   下载 2956 本文二维码信息
码上扫一扫!
分享到: 微信 更多
根土系统中的根系水力提升研究综述
邵立威, 孙宏勇, 陈素英, 张喜英
中国科学院遗传与发育生物学研究所农业资源研究中心 石家庄 050022
摘要:  根土系统可看作是土壤-植物-大气连续体(SPAC)系统的子系统, 根土间存在着内在优化协调的动态机制以更大限度地为SPAC 过程提供水分和养分。植物根系的水力提升现象是根土系统对水分分异的根土环境中土壤水资源优化利用的过程, 是植物根系所具有的一种普遍现象。植物根系的水力提升作用利于植物对土壤水分利用最大化, 同时也促进了对土壤养分的吸收利用及对土壤环境的改善。可以从系统优化的观点对这一现象的存在进行理论解释, 其发生受一定的条件制约, 是必然中的偶然。根系水力提升量不容忽视, 在一些环境的植物中, 水力提升提供了很大比例的蒸腾水分, 不仅对植物蒸腾耗水有利, 更存在广泛的生理生态意义。研究根系提水的应用对干旱区农业发展和生态修复有着潜在的价值, 具有广泛的研究前景。
关键词:  SPAC  根土系统  水力提升  植物根系  土壤水
中图分类号:
基金项目:中国科学院知识创新工程方向性项目(KZCX2-EW-415, KSCX2-EW-J-5)资助
An overview of root hydraulic lift in root-soil systems
SHAO Li-Wei, SUN Hong-Yong, CHEN Su-Ying, ZHANG Xi-Ying
Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050022, China
Abstract:  Root-soil system may be considered as a subsystem of the soil-plant-atmosphere continuum (SPAC). Synchronously, dynamic mechanisms in root-soil systems improve water and nutrient supply in the brother SPAC system. Plant root hydraulic lift is a process of root-soil systems that optimizes the homogeneous distribution and use of soil water. This phenomenon is a normal in plant root systems. Plant hydraulic lift processes make it easy to the most use of soil water and to facilitate soil nutrient utilization. Systemic optimization explains the mechanism of root hydraulic lift, which occurrence is restricted by environmental conditions and other inevitable factors. Root hydraulic lift water volume is a non-negligible element of plant growth, which provides a larger portion of water needed for transpiration. Hydraulic lift is not only a transpiration factor, but also a physiological and ecological element of plants. Applied root hydraulic lift research has the potential to improve agricultural development and ecological restoration in draught regions.
Keyword:  Soil-plant-atmosphere continuum (SPAC)  Root-soil system  Hydraulic lift  Plant root  Soil water
您是第 6095061 位访问者  冀ICP备05003362号-2
版权所有 ©《中国生态农业学报(中英文)》编辑部
地址:河北省石家庄市裕华区槐中路286号 050022 电话:0311-85818007 E-mail:editor@sjziam.ac.cn
技术支持:北京勤云科技发展有限公司