砷污染土壤植物修复的主要影响因素及改良研究进展

影响砷污染土壤植物修复的因素很多,文章重点综述了超积累植物、砷污染物特性、土壤物理化学性质以及气候、农业耕作措施等外部环境因素对砷污染土壤植物修复影响的研究进展,认为超积累植物是植物修复技术的核心,其对植物修复效率的提升起到至关重要的作用。实际工作中,应重视超积累植物的研究和筛选,强化超积累植物收割后的安全处置和资源化利用。只有建立在以植物修复为主的基础上,辅之以化学、微生物及农业生态等措施,才能大大提高砷污染土壤的修复效率。

Factors affecting phytoremediation process in soils contaminated with arsenic and its amendment applications

There are many factors which affect the efficiency of phytoremediation in soils contaminated with arsenic（As）.These include plant species,arsenic availability for the hyperaccumulator plants,physical and chemical properties of soil,soil amendments,soil microorganisms,etc.This paper mainly reviews the effects of As-hyperaccumulator plants,char-acteristics of arsenic pollutants,physical and chemical properties of soil,climate and agricultural cultivation measures,etc.on phytoremediation in As contaminated soils.The hyperaccumulator plants are the basis of phytoremediation technology and plays crucial role in enhancing the efficiency of phytoremediation.In practice,the research and screen of phytoremediation should be pay more attention,and the safe treatment techniques and resource application for phytoremediation at post-harvest stage should be strengthened.The chemicals,microorganism and agro-ecological measures should be used to enhance the remediation efficiency of soil contaminated with As based on phytoremediation.