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Method for recovering gangue vegetation using mycorrhiza technology

A technology of metal tailings and mycorrhizal application, applied in the fields of botanical equipment and methods, applications, horticultural methods, etc., can solve the problems of difficult plant growth, high heavy metal concentration, poor physical structure, etc., and achieve strong nutrient acquisition. capacity and drought resistance, improving adaptive capacity, and efficiently restoring the ecological balance of the mining area

Inactive Publication Date: 2005-07-06
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] The most prominent problems of tailings itself are excessively high concentration of heavy metals, lack of mineral nutrients necessary for plant growth, and extremely poor physical structure
These growth adversities can be overcome to some extent by applying appropriate amendments (such as bone carbon, sludge, etc.) and organic fertilizers, but it is still difficult for plants to grow well due to the limitation of their own adaptability

Method used

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  • Method for recovering gangue vegetation using mycorrhiza technology

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Embodiment

[0073] Mycorrhizal fungi (Glomus caledonium (Nicol & Gerd) Trappe & Gerdermann) multiply on maize as a host, and use rhizosphere soil containing host plant roots, mycorrhizal fungal spores and extra-root hyphae as inoculants. Leguminous plant Trifolium repens L., Compositae plant Coreopsis drummondii Torr. Et Gray and fern plant Centipede (Pterisvittata L.) were used as test plants. White clover and coreopsis seeds use 10% H before sowing 2 O 2 Surface disinfection and germination at room temperature. Centipede grass spores are pre-cultured to obtain seedlings for transplanting.

[0074] The copper tailing sand was mined from Tongling City, Anhui Province. Basic physical and chemical properties: pH (1∶2.5 water extraction), 8.68; organic matter content, 0.44%; total nitrogen, 0.031%; available phosphorus (Olsen-P), 1.56mg kg -1 ; Total copper content, 1375mg kg -1 ; Exchangeable copper content, 341mg kg -1 . The tailings sand is passed through a 2mm sieve and sterilized by irradia...

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Abstract

Disclosed is a process for comprehensive treatment of discarded metal tailings, wherein fungus root technology is employed to recover the metal tailing vegetation, the process comprises the steps of, (1) preparing the seeding agent, (2) preparing the basic plant material, (3) carrying out seeding bacteriorhiza treatment to plants by using the seeding agent obtained in (1), (4) conducting physical and chemical analysis to the metal tailing and related treatment, (5) sowing seeds or replanting young sprouts on the skin layer of the treated metal tailing, (6) curing the young sprouts.

Description

Technical field [0001] The invention belongs to the technical field of environmental protection, and relates to pollution ecological restoration technology, in particular to a method for comprehensive treatment of discarded metal tailings. Background technique [0002] Due to large-scale mining activities in my country, a large number of abandoned tailings have been produced. Tailings have accumulated for a long time to form various forms of tailing ponds. These tailings ponds not only occupy a large area of ​​agricultural or living land, but will also have a profound negative impact on the ecological environment of the mining area if it is not treated in time. First, the tailings pond destroys the harmonious natural landscape and puts tremendous pressure on the local ecological environment; secondly, the tailings sand may become a source of heavy metal pollution in the local water body, soil and atmosphere through the effects of wind and water, which in turn endangers agricultur...

Claims

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Application Information

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IPC IPC(8): A01G7/00A01H17/00C12N1/14
Inventor 朱永官陈保冬段婧
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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