CN111248028A - Soil restructuring substance and preparation method and application thereof - Google Patents
Soil restructuring substance and preparation method and application thereof Download PDFInfo
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- CN111248028A CN111248028A CN202010200941.5A CN202010200941A CN111248028A CN 111248028 A CN111248028 A CN 111248028A CN 202010200941 A CN202010200941 A CN 202010200941A CN 111248028 A CN111248028 A CN 111248028A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G20/00—Cultivation of turf, lawn or the like; Apparatus or methods therefor
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
- A01G24/17—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material containing slag
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/30—Growth substrates; Culture media; Apparatus or methods therefor based on or containing synthetic organic compounds
- A01G24/35—Growth substrates; Culture media; Apparatus or methods therefor based on or containing synthetic organic compounds containing water-absorbing polymers
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Cultivation Of Plants (AREA)
Abstract
The invention discloses a soil restructure, which comprises the following components in percentage by weight: 30-70% of rock-soil stripping material added with biochar, 30-70% of coal gangue and optionally less than or equal to 40% of fly ash. The soil restructuring substance adopts rock soil stripping substances, coal gangue and/or coal ash as surface soil substitute materials, and simultaneously adds biochar and/or water retention agent, so that the fertility and water holding capacity of soil are improved, in addition, the growth and development of crop root systems can be stimulated. Therefore, the invention develops a whole set of methods suitable for preparing and improving reconstructed soil in the inner Mongolia grassland mining area and screening vegetation.
Description
Technical Field
The invention relates to the technical field of soil reconstruction, in particular to a soil reconstruction material and a preparation method and application thereof.
Background
The soil in the inner Mongolia stannum Haote grassland area is mainly sandy loam, and the surface soil layer is thin and barren, so that the soil is an important factor for restricting the productivity of the grassland. The local annual average rainfall is 294.74mm, the annual evaporation capacity is 1759mm, the rainfall is mainly concentrated in 6-8 months, accounts for 70% of the annual rainfall, the water and soil loss is serious, the water and soil flow zero-gravity point prevention and protection area in the inner Mongolia autonomous region is provided, and the grassland ecological environment is fragile. The exploitation of strip mines seriously damages the originally fragile grassland ecosystem, and land reclamation is an important means for solving the damage. The soil fertility of the eastern grassland area is poor, the types of plants suitable for growth are relatively few, and the types of vegetation for ecological restoration need to be screened. In the vegetation growing period from late May to late September, the ground temperature of the eastern grassland area is higher, and because the precipitation is less and the evaporation is large, the plant monomer of the vegetation is smaller and the phenomenon of yellowing is easy to occur.
The main obstacles for vegetation restoration and ecological reconstruction in mine wastelands are soil factors and vegetation type factors, i.e., the specific, undesirable physicochemical properties of the wasteland and the types of vegetation suitable for growth. The mine soil reconstruction is the core of the reclamation of the abandoned mine land, and the screening of the greening vegetation is the key of ecological greening. In the case of the area with scarcity of surface soil, the surface area of the ground surface is increased due to the mining of the open pit coal mine, and the stripped surface soil before mining is not enough to cover the soil to the previous thickness, so that the scarcity of surface soil becomes an important factor for limiting the land reclamation of the area with scarcity of surface soil. In addition, after reclamation, due to the difference of physicochemical properties of different types of reconstructed surface soil, the types of vegetation suitable for growing in the different types of reconstructed surface soil also have difference, so that the selection of the greening vegetation also becomes an important factor for the reclamation and ecological restoration of the mining area land. The use of alternative materials for soil construction has become a poor alternative to this limiting factor. However, the use of large amounts of topsoil replacement materials results in poor soil fertility. And simultaneously, the use of large-particle solid wastes causes the reduction of the water holding capacity of the soil.
CN 109097064A discloses an acid soil conditioner, which is prepared from the following raw materials in parts by weight: 50-75 parts of dealuminized red mud powder, 15-30 parts of phosphogypsum, 5-10 parts of plant ash, 5-10 parts of calcium magnesium phosphate fertilizer, 0.5-1 part of compound microbial agent and 10-25 parts of cementing material; the soil conditioner improves the acid soil specifically. CN109957404A discloses a sand blown soil improver, which is prepared by stirring and mixing activated chitosan liquid, modified montmorillonite, an emulsifier, a modified additive, glycerol, a modified sodium alginate liquid, modified sepiolite, phospholipid, an organic acid and starch.
However, the regions of China are vast, the types of soil are numerous, the performances of soil conditioners on different soil types are different, and the vegetation suitable for growing in different soil types is also different. I.e. different areas, which differ in the soil amendment they are applied to and the vegetation which they are adapted to grow on.
Disclosure of Invention
The invention aims to provide a soil restructuring substance, a preparation method and application thereof, starts from solving the problem of an area, researches and develops restructuring soil preparation, improver screening and vegetation screening methods suitable for the area by taking an inner Mongolia stannum Haote grassland mining area as a research area, and plays an important role in guaranteeing the ecological safety of the area.
In order to achieve the above purpose, the invention adopts the following technical scheme: a soil reconstmction comprises the following components in percentage by weight: 30-70% of rock-soil stripping material added with biochar and 30-70% of coal gangue; the pyrolysis temperature of the biochar is 400-600 ℃, preferably 500 ℃, and the use ratio of the biochar to the rock-soil stripping substance is 10: 1-20: 1.
when the pyrolysis temperature of the biochar is increased from 150 ℃ to 500 ℃, the specific surface area of the biochar is 12m2The/g is increased to 307m2The amount of macropores is greatly increased, the macropores have great influence on the ventilation property and the water retention property of the reconstructed soil, and can provide habitats and breeding places for microorganisms, reduce the anaerobic degree and inhibit denitrification; the alkalinity of the biochar is increased along with the increase of the cracking temperature, the aromatizing degree is larger and larger, the stability is stronger and stronger, and the capability of adjusting the pH value of the reconstructed soil is enhanced. The application of biochar can increase the fertility of soil, and the biochar promotes the yield increase of crops mainly through changing the physical, chemical and microbiological properties of soil. The porosity and high specific surface area of the biochar are characterized by the reduction of soil volume weight, the improvement of porosity and water holding capacity, and can become a good habitat for soil microorganisms.
The coal gangue raw materials are all from mining solid wastes in a mining area, and the rock-soil strippers are from strippers containing gravels stripped in the mining process. Wherein, the rock soil stripping substance can increase the porosity of soil and is beneficial to the respiration of vegetation. Meanwhile, the soil substitute is used as a substitute, so that the consumption of foreign soil is saved. The coal gangue can provide organic matters and has the effect of water retention. The biochar is prepared by thermally cracking biomass at a high temperature of 500 ℃, can reduce the volume weight of soil, improve the saturated water content of the soil, fix the soil moisture and improve the soil fertility, and can be prepared from leguminous plant raw materials such as corn straws, cotton stalks and/or rice husks.
In a preferred embodiment, the soil reconstituent further comprises ≤ 40% fly ash. The fly ash can provide some trace elements such as Mg, Ca and the like and has the function of water retention.
The soil restructuring substance according to the present invention, in a preferred embodiment, comprises the following components in percentage by weight: 40% of rock-soil stripping material added with biochar and 60% of coal gangue; preferably, the soil reconstituent also comprises the following components in percentage by weight: 30 percent of rock-soil stripping material added with biochar, 40 percent of coal gangue and 30 percent of fly ash.
According to the soil reconstituent of the invention, in a preferred embodiment, the coal gangue and rock-soil strippers have a particle size of 5cm or less, preferably 1cm or less. When the particle size of the coal gangue is too large, the particle size of the coal gangue is larger than 5cm, the reconstructed soil is not beneficial to keeping moisture, the particle size of the coal gangue is smaller than 5cm, the volume weight of the reconstructed soil is reduced, the water holding capacity of the reconstructed soil can be improved due to tiny pores, and vegetation roots can attach to the reconstructed soil and utilize nutrients more easily.
In a preferred embodiment, the soil restructuring material further comprises a water-retaining agent, and the ratio of the water-retaining agent to the rock-soil release material is 25: 1-30: 1, preferably 28: 1, the water retention agent is selected from one or more of macromolecule water-absorbing resin, preferably macromolecule water-absorbing resin SAP with 30-80 meshes. The water-retaining agent can inhibit water evaporation, improve the saturated water content of soil, reduce the saturated hydraulic conductivity of the soil, slow down the water release speed of the soil and reduce the water permeation and loss of the soil.
Another aspect of the present invention is to provide a method for preparing the soil restructure, comprising the steps of:
mixing the rock-soil stripping material and the coal gangue and/or the fly ash according to the weight percentage, adding the biochar after mixing, and uniformly stirring to obtain the soil reconstruction material.
Preferably, mixing the rock-soil stripping material and the coal gangue according to the ratio of 4: 6; or mixing the rock-soil stripping material, the coal gangue and the fly ash according to the ratio of 3:4: 3. In the proportion of the reconstructed soil, the addition of the coal gangue can effectively improve the nutrient condition of the soil and reduce the pH value of the reconstructed soil; the coal gangue is added into the short board which can compensate nutrient elements such as nitrogen deficiency of the fly ash, and meanwhile, because the content of nutrient elements in the rock-soil strippant is low, on the premise of considering nutrient conditions required by vegetation growth, the content of the rock-soil strippant in the rock-soil strippant and coal gangue experimental group is controlled to be 40% or less, and the content of the fly ash and the rock-soil strippant in the rock-soil strippant, coal gangue and fly ash experimental group is controlled to be 30% or less.
In another aspect, the invention provides the application of the soil restructuring substance, and vegetation is planted on the surface of the soil restructuring substance.
In a preferred embodiment, the soil reconstituent is applied to an internal Mongolian grassland area, and the vegetation is preferably switchgrass, switch grass and artemisia frigida, more preferably switch grass and switch grass.
In a preferred embodiment, the soil reconsitution is covered with a fertilizer, preferably firesoil (cattle and sheep manure), and then planted with vegetation.
The invention has the following beneficial effects: the invention carries out research and development of the proportioning scheme and screening of the greening vegetation types and soil conditioners on the basis of relieving the influence of scarcity of surface soil of the east grassland mining area on the land reclamation quality and the influence of different greening vegetation selected areas on the subsequent ecological restoration effect and aiming at providing guarantee for the stability of a fragile grassland ecological system. The soil restructuring substance adopts the rock soil stripping substances, the coal gangue and/or the fly ash as surface soil substitute materials, and simultaneously adds the biochar and/or the water-retaining agent, so that the fertility and the water holding capacity of the soil are improved, in addition, the growth and the development of crop root systems can be stimulated, vegetation such as switchgrass and the like are preferably planted on the surface of the soil restructuring substance, the survival rate of the vegetation is high, and the average plant height can be effectively increased. Therefore, the invention develops a whole set of methods suitable for preparing and improving reconstructed soil in the inner Mongolia grassland mining area and screening vegetation.
Detailed Description
The experimental procedures used in the following examples are all conventional procedures unless otherwise specified.
Materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
The present invention will be further described with reference to the following examples. It should be understood that the following examples are illustrative only and are not intended to limit the scope of the present invention.
Switchgrass, guinea grass, artemisia frigida, seeds were purchased from seed stores.
The raw material sources of the coal gangue, the rock-soil stripping material and the fly ash are mining solid wastes in a mining area.
The vegetation planting method adopts the conventional technology and is not described in detail.
In the following examples 1-18, soil reconsitute was used as a substrate and plant seeds were planted thereon as follows:
the matrix of adopting cultivated in a pot is as experimental soil, and the flowerpot specification for the experiment is: height 13cm, diameter 15 cm. The soil preparation process comprises the following steps:
firstly sorting the coal gangue and rock-soil stripping materials, selecting the particle size to be below 5cm, and respectively adopting the following schemes to reconstruct soil:
the rock-soil group comprises three groups of nine basins of ① percent of pure rock-soil strippers, 100 percent of ② percent of pure rock-soil strippers and water retention agents, and three groups of nine basins of ③ percent of pure rock-soil strippers and biochar, wherein the average weight of each basin is 973.98 g;
a rock-soil group and a coal gangue group, wherein rock-soil strippers and coal gangue are mixed according to the weight percentage ratio of 4:6 (average 726.85g per basin), and the scheme is further provided with ① rock-soil strippers, 40% + coal gangue 60% three groups of nine basins, ② rock-soil strippers, 40% + coal gangue 60% + water retention agent three groups of nine basins (the using amount ratio of the water retention agent to the rock-soil strippers is 28: 1), ③ rock-soil strippers, 40% + coal gangue 60% + biochar three groups of nine basins (the weight using amount ratio of the biochar to the rock-soil strippers is 17: 1);
the rock-soil stripper, the coal gangue and the fly ash are mixed according to the weight percentage ratio of 3:4:3 (average 818.75g per basin), and the scheme is further provided with three groups of nine basins, namely ① rock-soil stripper 30% + coal gangue 40% + fly ash 30%, ② rock-soil stripper 30% + coal gangue 40% + fly ash 30% + water-retaining agent (the weight ratio of the water-retaining agent to the rock-soil stripper is 28: 1), ③ rock-soil stripper 30% + coal gangue 40% + fly ash 30% + biochar three groups of nine basins (the weight ratio of the biochar to the rock-soil stripper is 15: 1);
wherein, the biochar is generated by thermally cracking the corn straws at the high temperature of 500 ℃, the consumption of the biochar in each pot of the biochar adding group is 20g, and the biochar is uniformly mixed with the soil reconstruction materials in the pots;
the dosage of the water-retaining agent in each basin of the water-retaining addition group is 14g, and the use depth is 3-5 cm; the water-retaining agent is prepared from 30-80 meshes of' polymer water-absorbent resin SAP: the main chemical components are low cross-linked sodium polyacrylate 88% (containing sodium 24.5%), water 8% -10%, and cross-linking agent 0.5% -1%.
Adding the soil reconstruction substance while mixing the biochar with the soil reconstruction substance, adding the soil reconstruction substance until the distance between the biochar and the soil reconstruction substance is about 2cm, and repeatedly mixing until the biochar and the soil reconstruction substance are fully mixed.
113.96g of fireclay (cattle and sheep manure) was added to each pot as a base fertilizer.
The soil is watered thoroughly to the bottom of the basin with water, water flows out, 50 seeds are poured into each basin, and then 1cm of surface soil is covered on the seeds. The vegetation planting scheme is as follows:
(1) the rock-soil group comprises ① pure rock-soil strippant 100%, three groups of nine pots-three pots of switchgrass, Chinese wildrye and cold wormwood respectively, ② pure rock-soil strippant 100% + water retention agent three groups of nine pots-three pots of switchgrass, Chinese wildrye and cold wormwood respectively, ③ pure rock-soil strippant 100% + biochar three groups of nine pots-three pots of switchgrass, Chinese wildrye and cold wormwood respectively;
(2) the rock soil group and coal gangue group comprises ① rock soil stripping 40% + 60% of coal gangue three groups of nine pots-three pots of switchgrass, Chinese wildrye and cold wormwood respectively, ② rock soil stripping 40% + 60% of coal gangue + water retention agent three groups of nine pots-three pots of switchgrass, Chinese wildrye and cold wormwood respectively, ③ rock soil stripping 40% + 60% of coal gangue + three groups of charcoal three groups of nine pots-three pots of switchgrass, Chinese wildrye and cold wormwood respectively;
(3) the soil-soil strippant, coal gangue and coal ash group, switchgrass, Chinese wildrye and artemisia frigida are respectively three pots, namely ① soil-soil strippant 30% + coal gangue 40% + coal ash 30% three groups of nine pots, namely switchgrass, Chinese wildrye and artemisia frigida, ② soil-soil strippant 30% + coal gangue 40% + coal ash 30% + water retention agent three groups of nine pots, ③ soil-soil strippant 30% + coal gangue 40% + coal ash 30% + biochar, three groups of nine pots, namely switchgrass, artemisia frigida and artemisia frigida are respectively three pots.
In examples 1-18, embodiments of reconstituted soils and plant planting and corresponding results are shown in table 1 below:
TABLE 1
Note: the scheme comprises a scheme A of pure rock-soil strippers, a scheme B of 40% of rock-soil strippers and 60% of coal gangue, and a scheme C of 30% of rock-soil strippers, 40% of coal gangue and 30% of fly ash; 1-adding a water-retaining agent, 2-adding biochar (the preparation temperature of the biochar is 500 ℃); planting switchgrass, planting Chinese wildrye and planting artemisia selengensis.
The biomass of the three experimental vegetation is less than that of switchgrass > aegyptia frigida, and the biomass of the frigida is smaller, so switchgrass and aegyptia is preferred as the final vegetation screening object.
As can be seen from Table 1, in combination with both the B2-a and C2-a protocols, switchgrass survived more than switch grass, with the biomass of individual plants of switch grass being greater than switch grass. The optimal vegetation is selected from switchgrass, and the optimal improved reconstructed soil comprises 40% of rock-soil strippant added with biochar (the pyrolysis temperature of biochar preparation is 500 ℃) + 60% of coal gangue, and 30% of rock-soil strippant added with biochar (the biochar preparation temperature is 500 ℃) + 40% of coal gangue + 30% of coal ash.
The survival rate of the switchgrass planted is improved by 4.70 percent compared with the survival rate of the switchgrass planted in the scheme A without the additive by the scheme B with the addition of the biochar, and the average plant height is increased by 0.8 cm; the survival rate of switchgrass is improved by 5.37 percent compared with the switchgrass planted by the A scheme with the added biochar, and the average plant height is increased by 1.9 cm.
The survival rate of the switchgrass planted is improved by 2.70 percent compared with the additive-free scheme A by the scheme C with the addition of the biochar, and the average plant height is increased by 3.5 cm; the survival rate of switchgrass is improved by 2.70 percent compared with the switchgrass planted by the A scheme with the added biochar, and the average plant height is increased by 3.5 cm.
Comparative example: only rock-soil strippers (973.98 g per pot on average) which were stripped during the mining process in the great grassland area of the cylinder and contained gravel were used, and 113.96g of fireclay (cattle and sheep manure) was also added per pot as a base fertilizer. The soil was watered thoroughly with water to the bottom of the pots, from which water flowed out, 50 seeds of switchgrass were added per pot, and then 1cm of topsoil was covered thereon. The comparative example vegetation planting results are: the comparative example was a pure geotechnical dissecting species of switchgrass, whose survival rate after 80 days of growth was only 27.30% and average plant height was only 19.8 cm.
The comparative example has inferior growth conditions to the examples (40% of rock-soil stripping, 60% of coal gangue, 32.00% of survival rate of switchgrass planted by charcoal, and 20.6cm of average plant height); the growth conditions of the comparative example are also inferior to those of the example (30% of rock-soil stripping object, 40% of coal gangue, 30% of fly ash, 30.00% of survival rate of switchgrass planted by charcoal, and average plant height of 23.3 cm).
It will be appreciated by those skilled in the art that modifications or adaptations to the invention may be made in light of the teachings of the present specification. Such modifications or adaptations are intended to be within the scope of the present invention as defined in the claims.
Claims (10)
1. A soil restructured mass, comprising: comprises the following components in percentage by weight: 30-70% of rock-soil stripping material added with biochar and 30-70% of coal gangue; the pyrolysis temperature of the biochar is 400-600 ℃, and the dosage ratio of the biochar to the rock-soil stripping substance is 10: 1-20: 1.
2. the soil amendment according to claim 1, wherein: the soil reconstruction material also comprises less than or equal to 40% of fly ash, and the dosage ratio of the biochar to the rock-soil stripping material is 15: 1-17: 1, the pyrolysis temperature of the biochar is 500 ℃.
3. The soil amendment according to claim 1, wherein: the soil reconstituent comprises the following components in percentage by weight: 40% of rock-soil stripping material added with biochar and 60% of coal gangue.
4. The soil amendment according to claim 2, wherein: the soil reconstituent can also comprise the following components in percentage by weight: 30 percent of rock-soil stripping material added with biochar, 40 percent of coal gangue and 30 percent of fly ash.
5. The soil amendment according to claim 1, wherein: the grain diameter of the coal gangue and the rock-soil stripping object is less than or equal to 5cm, preferably less than or equal to 1 cm.
6. The soil amendment according to claim 1, wherein: the soil restructuring substance also comprises a water-retaining agent, and the dosage ratio of the water-retaining agent to the rock-soil stripping substance is 25: 1-30: 1, the water retention agent is selected from one or more of macromolecule water-absorbing resin, preferably macromolecule water-absorbing resin SAP with 30-80 meshes.
7. The method of preparing a soil amendment according to any of claims 1 to 6, wherein: the method comprises the following steps:
mixing the rock-soil stripping material and the coal gangue and/or the fly ash, adding the biochar after mixing, and uniformly stirring to obtain the soil reconstruction material.
8. The method of preparing a soil amendment according to claim 7, wherein: mixing the rock-soil stripping material and the coal gangue according to the weight percentage ratio of 4: 6; or mixing the rock-soil stripping material, the coal gangue and the fly ash according to the ratio of 3:4: 3.
9. Use of a soil amendment according to any of claims 1 to 6, wherein: and carrying out vegetation planting on the surface of the soil reconstruction.
10. Use of a soil amendment according to claim 9, wherein: the soil reconstituent is applied to an inner Mongolia grassland mine area, and the vegetation is preferably switchgrass, ledebouriella vulgaris and artemisia frigida, more preferably switchgrass and ledebouriella vulgaris.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816655A (en) * | 2020-12-22 | 2021-05-18 | 山西大学 | Soil profile reconstruction method for ecological restoration |
| CN113880669A (en) * | 2021-10-11 | 2022-01-04 | 扎赉诺尔煤业有限责任公司 | Preparation method and application of open pit coal mine soil conditioner in alpine region |
| CN115443879A (en) * | 2022-10-13 | 2022-12-09 | 中国矿业大学 | Preparation method of matrix coal gangue and seedling raising matrix based on coal gangue |
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| CN109076919A (en) * | 2018-07-27 | 2018-12-25 | 中国地质大学（北京） | A kind of Soil Reconstruction object and its preparation method and application |
| CN110527516A (en) * | 2019-08-28 | 2019-12-03 | 神华北电胜利能源有限公司 | A kind of reconstruct soil and a kind of soil improvement method suitable for Inner Mongolian grassland mining area |
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2020
- 2020-03-20 CN CN202010200941.5A patent/CN111248028A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109076919A (en) * | 2018-07-27 | 2018-12-25 | 中国地质大学（北京） | A kind of Soil Reconstruction object and its preparation method and application |
| CN110527516A (en) * | 2019-08-28 | 2019-12-03 | 神华北电胜利能源有限公司 | A kind of reconstruct soil and a kind of soil improvement method suitable for Inner Mongolian grassland mining area |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816655A (en) * | 2020-12-22 | 2021-05-18 | 山西大学 | Soil profile reconstruction method for ecological restoration |
| CN113880669A (en) * | 2021-10-11 | 2022-01-04 | 扎赉诺尔煤业有限责任公司 | Preparation method and application of open pit coal mine soil conditioner in alpine region |
| CN115443879A (en) * | 2022-10-13 | 2022-12-09 | 中国矿业大学 | Preparation method of matrix coal gangue and seedling raising matrix based on coal gangue |
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