Soilless spray-seeding substrate for mine greening and preparation method of soilless spray-seeding substrate

Abstract

The invention discloses a soilless spray seeding substrate for mine greening and a preparation method thereof, and belongs to the technical field of plant cultivation. The soilless spray-seeding substrate for mine greening comprises a spray-seeding base material, an adhesive solution and a water-retaining agent solution. The spray-seeding basic material is prepared from 40 to 120 parts of vermiculite powder, 60 to 160 parts of perlite, 100 to 200 parts of northeast black charcoal soil and 600 to 1000 parts of plant fibers; the adhesive solution is prepared from 5 to 50 parts of urea, 1000 to 10000 parts of water, 100 to 400 parts of cottonseed meal and 5 to 50 parts of citric acid; the water-retaining agent solution is prepared from 30 to 200 parts of sodium alginate, 1500 to 10000 parts of water and 10 to 50 parts of multivalent metal ions. The plant culture medium disclosed by the invention has the advantages of good adhesive force, rain wash resistance, good water retention capacity and transpiration resistance, soft base material, difficulty in hardening and good air permeability.

Description

technical field

[0001] The invention relates to the field of mine restoration, in particular to a method for preparing a soilless substrate which is used for mine restoration, can be firmly attached to exposed rock walls, is resistant to rain erosion, and has good water absorption and water retention capabilities. Background technique

[0002] The mining and utilization of mineral resources has brought about some geological environmental problems. The mining process has destroyed topography and vegetation, resulting in damage to land resources. Due to the loss of vegetation for water and soil conservation, water conservation, and wind and sand fixation, the atmosphere, soil and sand have been damaged. Water pollution, soil erosion and a series of ecological environmental problems. To solve the ecological environment problems brought about by the mining of mineral resources, it is necessary to carry out ecological restoration of the abandoned mine land.

[0003] Mine regreen...

Examples

Embodiment 1

[0030] First, prepare the base material for spraying: add 40 parts of vermiculite powder, 60 parts of perlite, 105 parts of Northeast black charcoal soil and 615 parts of plant fiber into a horizontal mixer and stir for 30-300 minutes to obtain a well-mixed spraying base material. The fineness of the vermiculite powder is between 60-80 mesh. The diameter of the perlite particles is between 3-5 mm. The length of the plant fiber is between 1-10 mm, and the aspect ratio is between 4-20.

[0031] Then, prepare the binder solution: dissolving 6 parts of urea into 1000 parts of tap water, stirring and reacting at 10-100° C. for 10-50 minutes to promote the complete dissolution of urea. Then add 100 parts of cottonseed meal, and continue to stir and react for 10-240 minutes under the condition of 10-100°C. Then add 7 parts of citric acid, and continue to stir the reaction at 10-100° C. for 10-400 minutes.

[0032] After that, configure the water-retaining agent solution: take 35 ...

Embodiment 2

[0035] First, prepare the base material for spraying: add 60 parts of vermiculite powder, 80 parts of perlite, 120 parts of Northeast carbon soil and 700 parts of plant fiber into a horizontal mixer and stir for 30-300 minutes to obtain a well-mixed spraying base material. The fineness of the vermiculite powder is between 60-80 mesh. The diameter of the perlite particles is between 3-5 mm. The length of the plant fiber is between 1-10 mm, and the aspect ratio is between 4-20.

[0036] Then, prepare the binder solution: dissolving 13 parts of urea into 2000 parts of tap water, stirring and reacting at 10-100° C. for 10-50 minutes to promote the complete dissolution of urea. Then add 210 parts of cottonseed meal, and continue to stir and react for 30-200 minutes under the condition of 10-100°C. Then add 15 parts of citric acid, and continue to stir and react for 60-400 minutes under the condition of 10-100°C.

[0037] After that, configure the water-retaining agent solution:...

Embodiment 3

[0040] First, prepare the base material for spraying: add 85 parts of vermiculite powder, 125 parts of perlite, 150 parts of Northeast black charcoal soil and 820 parts of plant fiber into a horizontal mixer and stir for 30-300 minutes to obtain a well-mixed spraying base material. The fineness of the vermiculite powder is between 60-80 mesh. The diameter of the perlite particles is between 3-5 mm. The length of the plant fiber is between 1-10 mm, and the aspect ratio is between 4-20.

[0041] Then, prepare the binder solution: dissolving 30 parts of urea into 6000 parts of tap water, stirring and reacting at 10-100° C. for 10-50 minutes to promote the complete dissolution of urea. Then add 290 parts of cottonseed meal, and continue to stir and react for 30-200 minutes under the condition of 10-100°C. Then add 31 parts of citric acid, and continue to stir and react for 60-400 minutes at 10-100°C.

[0042] After that, configure the water-retaining agent solution: take 120 p...

technical field

[0001] The invention relates to the field of mine restoration, in particular to a method for preparing a soilless substrate which is used for mine restoration, can be firmly attached to exposed rock walls, is resistant to rain erosion, and has good water absorption and water retention capabilities. Background technique

[0002] The mining and utilization of mineral resources has brought about some geological environmental problems. The mining process has destroyed topography and vegetation, resulting in damage to land resources. Due to the loss of vegetation for water and soil conservation, water conservation, and wind and sand fixation, the atmosphere, soil and sand have been damaged. Water pollution, soil erosion and a series of ecological environmental problems. To solve the ecological environment problems brought about by the mining of mineral resources, it is necessary to carry out ecological restoration of the abandoned mine land.

[0003] Mine regreen...

Examples

Embodiment 1

[0030] First, prepare the base material for spraying: add 40 parts of vermiculite powder, 60 parts of perlite, 105 parts of Northeast black charcoal soil and 615 parts of plant fiber into a horizontal mixer and stir for 30-300 minutes to obtain a well-mixed spraying base material. The fineness of the vermiculite powder is between 60-80 mesh. The diameter of the perlite particles is between 3-5 mm. The length of the plant fiber is between 1-10 mm, and the aspect ratio is between 4-20.

[0031] Then, prepare the binder solution: dissolving 6 parts of urea into 1000 parts of tap water, stirring and reacting at 10-100° C. for 10-50 minutes to promote the complete dissolution of urea. Then add 100 parts of cottonseed meal, and continue to stir and react for 10-240 minutes under the condition of 10-100°C. Then add 7 parts of citric acid, and continue to stir the reaction at 10-100° C. for 10-400 minutes.

[0032] After that, configure the water-retaining agent solution: take 35 ...

Embodiment 2

[0035] First, prepare the base material for spraying: add 60 parts of vermiculite powder, 80 parts of perlite, 120 parts of Northeast carbon soil and 700 parts of plant fiber into a horizontal mixer and stir for 30-300 minutes to obtain a well-mixed spraying base material. The fineness of the vermiculite powder is between 60-80 mesh. The diameter of the perlite particles is between 3-5 mm. The length of the plant fiber is between 1-10 mm, and the aspect ratio is between 4-20.

[0036] Then, prepare the binder solution: dissolving 13 parts of urea into 2000 parts of tap water, stirring and reacting at 10-100° C. for 10-50 minutes to promote the complete dissolution of urea. Then add 210 parts of cottonseed meal, and continue to stir and react for 30-200 minutes under the condition of 10-100°C. Then add 15 parts of citric acid, and continue to stir and react for 60-400 minutes under the condition of 10-100°C.

[0037] After that, configure the water-retaining agent solution:...

Embodiment 3

[0040] First, prepare the base material for spraying: add 85 parts of vermiculite powder, 125 parts of perlite, 150 parts of Northeast black charcoal soil and 820 parts of plant fiber into a horizontal mixer and stir for 30-300 minutes to obtain a well-mixed spraying base material. The fineness of the vermiculite powder is between 60-80 mesh. The diameter of the perlite particles is between 3-5 mm. The length of the plant fiber is between 1-10 mm, and the aspect ratio is between 4-20.

[0041] Then, prepare the binder solution: dissolving 30 parts of urea into 6000 parts of tap water, stirring and reacting at 10-100° C. for 10-50 minutes to promote the complete dissolution of urea. Then add 290 parts of cottonseed meal, and continue to stir and react for 30-200 minutes under the condition of 10-100°C. Then add 31 parts of citric acid, and continue to stir and react for 60-400 minutes at 10-100°C.

[0042] After that, configure the water-retaining agent solution: take 120 p...

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