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Method for ecologically regreening slag and application

A slag and ecological technology, applied in the field of slag ecological regreening, can solve the problems of large porosity, low moisture content, and high manpower and material resources, and achieve the effect of improving nutritional composition and low cost

Inactive Publication Date: 2021-08-13
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, slag has the characteristics of heavy metal compound pollution, low moisture content, large porosity, and good air and water permeability, and the slag matrix has poor water retention and is easy to harden, making it difficult for woody plants and other plants that require large amounts of water to colonize and grow.
[0003] At present, the commonly used treatment mode for abandoned slag piles is mainly through landfill removal, foreign soil and sowing grass seeds or planting shrubs for regreening and restoration, which requires a lot of manpower and material resources

Method used

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  • Method for ecologically regreening slag and application
  • Method for ecologically regreening slag and application

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Experimental program
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Embodiment 1

[0044] This embodiment provides a method for slag ecological regreening, comprising the following steps:

[0045] (1) Pretreatment of moss

[0046] The dominant bryophyte in pyrite collection, Pyrethus flavus, is reserved for use.

[0047]Ramet plant body: the moss collected from the field and brought back to the laboratory was transplanted into weakly acidic soil for indoor domestication. The soil pH = 5.7, and the soil total nitrogen, available phosphorus, and available potassium contents were 1.67g / kg and 34.8mg / kg, respectively. kg, 159mg / kg. After acclimatization and adapting to the environment, some samples of the moss moss were taken and rinsed under running water, and then the ramets were soaked in distilled water.

[0048] Broken gametophyte: Wash the collected moss moss and dry it in an oven at 45° C. to constant weight, and then crush it to a particle size of about 1 mm with a pulverizer to obtain broken gametophytes.

[0049] Dropped branch tips: use tweezers to...

Embodiment 2

[0057] This embodiment provides a method for slag ecological regreening, comprising the following steps:

[0058] (1) Pretreatment of moss

[0059] The dominant bryophyte in pyrite collection, Pyrethus flavus, is reserved for use.

[0060] Ramet plant body: the moss collected from the field and brought back to the laboratory was rinsed under running water, and then moved into liquid medium for indoor cultivation and maintenance. The ratio of this liquid medium is: KNO 3 100mg, CaCl 2 4H 2 O 10mg, MgSO 4 10mg, KH 2 PO 4 136mg, FeSO 4 0.4mg was dissolved in 1000mL distilled water, and the pH was adjusted to 6.5. Take part of the acclimatized moss sample, wash it under running water, and then soak the ramets in distilled water.

[0061] Broken gametophyte: Wash the collected moss moss and dry it in an oven at 50° C. to constant weight, and then crush it with a pulverizer until the particle size is about 2 mm to obtain broken gametophytes.

[0062] Dropped branch tips...

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Abstract

The invention discloses a method for ecologically regreening slag and application, and relates to the technical field of ecological restoration. According to the method for ecologically regreening the slag, moss plants are adopted for colonization regreening on the slag, and the form of the moss plants is selected from at least one of divided plant bodies, broken gametophytes and fallen branch tips. According to the invention, the moss plants are creatively utilized to carry out colonization regreening on the slag, it is found that the adopted divided plant bodies, gametophytes and branch tips can adapt to the environmental requirements of barren slag soil, and grow on the slag, natural ecological regreening of the slag is realized on the basis of no soil coverage, and the nutritional composition of the slag can be remarkably improved. In addition, according to the ecological regreening method, rich germplasm resources of moss can be utilized, and the method has the advantage of being low in cost.

Description

technical field [0001] The invention relates to the technical field of ecological restoration, in particular to a method and application for ecological restoration of slag. Background technique [0002] Southwestern Sichuan is rich in mineral resources. Due to long-term large-scale mining, a large number of leftover waste rocks and slag have been piled up. The slag has the characteristics of heavy metal compound pollution, low moisture content, large porosity, and good air and water permeability, and the slag matrix has poor water retention and is easy to harden, making it difficult for woody plants and other plants that require large amounts of water to colonize and grow. [0003] At present, the commonly used treatment mode for the abandoned slag pile is mainly to restore the greening by clearing and transporting landfill, foreign soil and sowing grass seeds or planting shrubs, which requires a lot of manpower and material resources. [0004] In view of this, the present ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G20/00A01G17/00A01G22/30
CPCA01G20/00A01G17/005A01G22/30
Inventor 徐恒张容梁珂唐灏王子儒魏名扬
Owner SICHUAN UNIV
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