重金属污染土壤植物根系分泌物研究进展

发布时间：2018-03-18 19:13

本文选题：土壤学　切入点：植物修复　出处：《浙江农林大学学报》2017年06期 　论文类型：期刊论文

【摘要】：根系分泌物不仅是植物与根际进行物质交换的载体,还参与植物修复污染土壤的各个环节。通过查阅1992-2016年国内外关于根系分泌物的研究成果,对根系分泌物分类的依据、常用收集鉴定方法的适用性,及其在土壤修复中的作用方面等进行了综述。通过植物根系分泌物的提取鉴定方法以及对污染土壤修复机理影响等方面的系统梳理,揭示了目前中国在植物根系分泌物研究的研究体系以及在今后的研究中所需要突破的方向。植物修复作为典型的绿色、环保的修复技术近年来应用广泛,但修复效率低、耗时长等一系列现实问题,一直是困扰该技术大面积应用的重要瓶颈,而加强根系分泌物在植物修复中作用的研究是解决这一问题的关键。通过对以往该领域的研究文献的分析,系统阐明了根系分泌物在土壤中的物理、化学、生物作用,为重金属污染土壤的植物修复工程的研究提供理论支撑和技术指导。
[Abstract]:Root exudates are not only carriers of material exchange between plants and rhizosphere, but also participate in various links of phytoremediation of contaminated soil. The classification of root exudates is based on the research results of root exudates at home and abroad from 1992 to 2016. The applicability of common collection and identification methods and their roles in soil remediation were reviewed. The methods of extraction and identification of plant root exudates and their effects on remediation mechanism of contaminated soil were systematically combed. This paper reveals the research system of plant root exudates in China and the direction of breakthrough in future research. Phytoremediation as a typical green and environmentally friendly restoration technology has been widely used in recent years, but its efficiency is low. A series of practical problems, such as time-consuming and so on, have been an important bottleneck in the large-scale application of the technology. The key to solve this problem is to strengthen the role of root exudates in phytoremediation. The physical, chemical and biological effects of root exudates in soil were systematically clarified by analyzing the previous literatures in this field. It provides theoretical support and technical guidance for the research of phytoremediation of heavy metal contaminated soil.
【作者单位】：浙江农林大学省部共建亚热带森林培育国家重点实验室;浙江农林大学环境与资源学院浙江省土壤污染生物修复重点实验室;浙江诚邦园林规划设计院有限公司;浙江省温岭市环境保护局;
【基金】：国家自然科学基金面上基金资助项目(31670617) 浙江省科学技术重点研发项目(2015C03020-2)
【分类号】：X173;X53

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