Method for remediating ion-type rare-earth tailing area by virtue of tolerant economic plant ramie

Abstract

The invention discloses a method for remediating an ion-type rare-earth tailing area by virtue of tolerant economic plant ramie. The method comprises the following steps: carrying out matrix improvement on soil with a thickness of 0-10cm in the rare-earth tailing area through an improver at first; then transplanting the tolerant plant ramie into the improved tailing area; then ensuring the survival rate of the ramie through watering, weeding and other measures; and harvesting the overground parts of the ramie and reserving the underground parts of the ramie in November. The underground parts continue to survive and carry out vegetative propagation, so that remediation can be continuously carried out. Hide fibres are collected from the harvested overground parts. The invention provides a new remediation mode and a plant material for governance and ecological remediation for a rare-earth ore tailing land, and environment, economic and social benefits can also be brought to the local area while a rare-earth tailing area target is remediated. Moreover, ramie has the characteristics of being high in survival ability, perennial, short in growth cycle, high in propagation ability, without the need of special management and the like, and can be applied to governance for the barren rare-earth tailing land to achieve the purpose of remediating a mine.

Description

technical field [0001] The invention belongs to the technical field of repairing rare earth tailing sand areas. More specifically, it relates to a method for repairing the ionic rare earth tailings area by using the tolerant economical plant ramie. Background technique [0002] Rare earths are regarded by various countries as one of the most important strategic resources related to national security and development, and are widely used in aerospace industry, military industry, petrochemical industry and other industries. my country is a country with a large amount of rare earth resources, and its reserves and mining volume are both in the first place in the world. However, for a long time, the ion-type rare earth mines in southern Jiangxi have been exploited out of order, the rare earth industry has been operated extensively, the phenomenon of random digging and excessive mining is serious, and the production technology is backward, which not only caused vegetation damage, ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defects and deficiencies of the existing rare earth tailings area restoration technology, aiming to solve the problems of poor soil physical and chemical properties, low nutrient element content, and difficult growth of plants in the rare earth tailings area at the present stage; at the same time, popularize and Applied Phytoremediation Technology

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