Mine bare land repairing material and repairing method and application thereof

A restoration material and restoration method technology, applied in the field of ecological restoration, can solve the problems of increasing the phytotoxicity of red fescue, increasing the absorption of Cu pollution, inhibiting plant growth, etc., and achieving the effects of increasing plant biomass, growing rapidly, and reducing toxic effects.

Pending Publication Date: 2022-03-22
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, studies have shown that the application of alkaline sludge can significantly increase the phytotoxicity of red fescue to Cu and increase the absorption of Cu pollution by plants.
At the same time, excessive application of biochar can also cause toxicity to plants and inhibit plant growth.

Method used

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  • Mine bare land repairing material and repairing method and application thereof
  • Mine bare land repairing material and repairing method and application thereof
  • Mine bare land repairing material and repairing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of repairing material of bare mine land in this embodiment includes kenaf hemp stalk biochar and ramie plants. The kenaf stems are collected from the Guangdong Shaoguan Experimental Base.

[0028] The kenaf stalk biochar of this example is prepared by the following method: after pulverizing the kenaf stalks, carbonize at a carbonization temperature of 500°C for 3 hours under anaerobic conditions, pass through a 20-mesh sieve after cooling and grinding.

[0029] The ramie plant of the present embodiment is cultivated by the following method: first use 1%H 2 o 2 The ramie seeds are soaked in the solution for 10 minutes, then soaked in pure water for 24 hours, and the soaked seeds are cultured in a seedling tray for 7 days to obtain the ramie plants.

[0030] A kind of restoration method of mine bare land of the present embodiment, comprises the following steps:

[0031] (1) Add the kenaf hemp stalk biochar to the soil of the mine bare land by 0.4% of the soil we...

Embodiment 2

[0034] The difference between this embodiment and Example 1 is that the addition amount of the kenaf hemp stalk biochar is different. In this embodiment, the kenaf hemp stalk biochar is added to the soil of the bare land of the mine by 1% of the soil weight.

Embodiment 3

[0036] The difference between this embodiment and Example 1 is that the added amount of kenaf hemp stalk biochar is different. In this embodiment, the kenaf hemp stalk biochar is added to the soil of the bare mine land by 3% of the soil weight.

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Abstract

The invention discloses a restoration material for a bare mine land and a restoration method and application thereof, and relates to the technical field of ecological restoration. The repairing material for the bare mine land comprises biochar and pioneer plants, the biochar is at least one of hibiscus cannabinus stem biochar, sludge biochar and chicken manure biochar; the pioneer plant is ramie. The biochar in the remediation material is combined with the ramie, so that the matrix of the bare land is improved, the toxic action of heavy metals on plants is reduced, and the plant biomass of the bare land of the mine, the TC content of the bare land soil and the microbial diversity of the plant root system of the bare land soil are remarkably improved; the economic crop ramie is selected as a pioneer plant in the remediation material, the ramie grows rapidly, the root system is developed, improvement of the physical and chemical properties of the soil is promoted, and meanwhile the cost of remediation of the bare mine land is reduced.

Description

technical field [0001] The invention relates to the technical field of ecological restoration, in particular to a restoration material for bare mine land, a restoration method and application thereof. Background technique [0002] my country's mines are widely distributed, and the output of non-ferrous metals ranks first in the world. While mine development brings huge economic benefits, it inevitably poses serious threats to the environment. The most significant impact of mine development is on vegetation. As the topsoil is dug or removed, coupled with the weight of mining equipment, the soil will generally become very compacted and firm, resulting in a serious loss of soil nutrients, water, and organic matter, which may lead to the mining process. The complete destruction and death of vegetation in the In addition, the accumulation of tailings sand may also cause changes in land morphology, eventually forming bare mine land. Studies have shown that during the mining pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/10
CPCB09C1/105
Inventor 王诗忠李梦瑶陈晓婷陈驰宇黄礼格晁元卿汤叶涛仇荣亮
Owner SUN YAT SEN UNIV
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