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Method of ecological restoration of ion type rare earth mine

A technology of ecological restoration and ionization, which is applied in the fields of soil preparation methods, botany equipment and methods, gardening, etc., can solve the problem of damage to soil texture and its physical and chemical structure, low natural water content and water holding capacity, and difficulty in maintaining and stabilizing artificial vegetation, etc. problems, achieve the effect of restoring ecological landscape, increasing bacterial diversity and bacterial content, and promoting benign interaction

Inactive Publication Date: 2017-10-13
ZHONGKAI UNIV OF AGRI & ENG
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  • Claims
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Problems solved by technology

The original surface vegetation was completely destroyed due to the mining process; at the same time, the mining process seriously damaged the soil texture and its physical and chemical structure, the soil bacteria content was extremely low, and the lack of fertilizer and water made it difficult for plants to grow; The surface soil and its fertility have been blown and wiped by the wind for a long time, the organic matter content is extremely low, the soil texture is mainly coarse sandy soil, or only sand is left, and the natural water content and water holding capacity are very low, making it difficult for artificial vegetation to be sustainable and stable

Method used

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  • Method of ecological restoration of ion type rare earth mine
  • Method of ecological restoration of ion type rare earth mine
  • Method of ecological restoration of ion type rare earth mine

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Embodiment 1

[0026] This embodiment provides a method for ecologically restoring an ionic rare earth mine. The rare earth mine to be repaired is the rare earth mine in Huangshe Village, Renju Town, Pingyuan County, Guangdong Province. details as follows:

[0027] 1. Methods and steps

[0028] a. Land consolidation and fertilization: Level the rare earth mine to be repaired to a gentle ground or slope according to the site conditions, dig holes or ditch on the gentle ground or slope to bury dry straw 500g / m 2 , with a landfill depth of 0.2 m; then spread 500g / m of dry pig manure on flat or sloped ground 2 .

[0029] b. Vegetation planting: After the spring rain, plant cuttings of Paspalum conjugatum on the land treated in step a, with a specification of 0.5×0.6m (that is, the spacing between plants is 0.5m and row spacing is 0.6m, about 2000 cuttings. After 20 days of rain, plant masson pine (Pinusmas soniana) saplings with a size of 1.0×1.5m (that is, the distance between plants is 1.0m...

Embodiment 2

[0044] This embodiment provides a method for ecological restoration of ion-type rare earth mines. The rare earth mines to be repaired are 815 rare earth mines in Xiache Town, Heping County, Guangdong Province. details as follows:

[0045] 1. Methods and steps

[0046]a. Land consolidation and fertilization: Level the rare earth mine to be repaired to a gentle ground or slope according to the site conditions, dig holes or ditch on the gentle ground or slope to bury dry straw 500g / m 2 , with a landfill depth of 0.2 m; then spread 500 g / m of dry chicken manure on flat or sloped ground 2 .

[0047] b. Vegetation planting: After the spring rain, cuttings of Digitarias anguinalis cutting seedlings are cut on the land treated in step a, the size is 0.5×0.6m (that is, the spacing between plants is 0.5m, and the spacing between rows is 0.6m, about 2000 cuttings / Mu), 25 days after the rain, plant the same amount of tung tree seedlings (Vernicia fordii) and neem seedlings (Melia azed...

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Abstract

The invention relates to a method of ecological restoration of ion type rare earth mine. The method comprises the steps of fertilization, when the leveled rare earth mine to be restored is filled with hay, and then organic fertilizer is applied; planting, wherein cutting seedlings of herbaceous plants are planted in the rare earth mine processed according to the first step, and trees are planted in 20 to 30 days; the herbaceous plants are at least one of knotgrass and digitaria sanguinalis, and the trees comprise at least one of Chinese red pine, tung tree and chinaberry; management after planting, the plants are allowed to grow naturally to form vegetation after being planted; replanting for replacement of dead seedlings is conducted in good time in the planting year, the seedlings are watered for the first time after transplantation in replanting. After the restoration, bacterial diversity and amount of bacteria in the rare earth mine soil are greatly improved, soil fertility is improved substantially, the ecological environment of soil is significantly improved and recovered, and benign interaction among soil improvement, plant growth and microbial multiplication is promoted.

Description

technical field [0001] The invention relates to the field of ecological restoration, in particular to a method for ecological restoration of ionic rare earth mines. Background technique [0002] my country is rich in rare earth mine resources, ranking first in the world in terms of rare earth resource reserves, production, sales and usage, and is the world's largest rare earth resource country. Ionic rare earth minerals belong to clay minerals, and rare earth elements are adsorbed on clay particles in the form of ions. The mining process is simple and the cost is low, and the pool leaching method and pouring method are commonly used for mining. During the mining process, a large amount of ammonium chloride and ammonium sulfate are used as extractants, and oxalic acid is used as a precipitant at the same time, causing serious damage to the ecological environment, often causing serious consequences such as mountain barrenness, soil erosion, water pollution, and damage to down...

Claims

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Application Information

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IPC IPC(8): A01B79/02A01G17/00A01G1/00
CPCA01B79/02A01G17/005
Inventor 梁红刘胜洪
Owner ZHONGKAI UNIV OF AGRI & ENG
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