Gasification slag-based lawn composite pellet substrate and preparation method thereof
By preparing the gasified slag-based lawn composite pellet matrix, probiotics are used to stimulate the nutrients in the gasified slag, and the bonding-water-retaining compound is used to wrap the grass seeds, forming 8mm-12mm pellets, solving the problems of grass seed loss and bird damage, promoting grass seed growth, expanding the utilization field of gasified slag, and achieving efficient utilization of lawn planting.
Patent Information
- Application Number
- CN202411098965.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-08-08
AI Technical Summary
Grass seeds are light in weight and are prone to float when sowing; grass seeds need to be manually stepped on and trapped in the substrate after sowing; after grass seeds, birds eat grass seeds due to not being timely stepped on and become fat; the Si, CaO, Al, and Fe elements in the gasified slag are not easily stimulated.
The gasified slag-based lawn composite pellet matrix is used to form an 8mm-12mm gasified slag-based lawn composite pellet matrix by mixing grass seeds, probiotics, bonding-water-retaining composite agent, organic biomass and water. The probiotics are used to stimulate the Si, CaO, Al, and Fe elements in the gasified slag, and the bonding-water-retaining composite agent wraps the grass seeds, forming a chole ball and shell, providing a water environment to promote the growth of grass seeds.
It solves the problem of the loss of grass seeds when sowing and needs to be artificially stepped on after sowing, reduces bird damage, stimulates the nutrient elements in the gasification slag, promotes the early growth of grass seeds, expands the utilization field of gasification slag, and meets the industrial development requirements of energy conservation, environmental protection and circular economy.
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Abstract
Description
Technical Field
[0001] The invention belongs to the field of agricultural substrates, and in particular relates to a gasified slag-based lawn composite pellet substrate and a preparation method thereof, which are used for lawn planting. Background Art
[0002] Coal gasification technology involves converting coal into gas in a reactor under controlled temperature and pressure conditions using specific methods and techniques, resulting in crude water gas. This water gas is then processed through specific processes to produce primary products such as natural gas, or secondary chemical products such as ethylene. my country's coal gasification technology has been designated a major national project. The coal gasification process produces a large amount of solid waste—gasification slag—rich in SiO₂, Al₂O₃, CaO, Fe₂O₃, and some residual carbon. Prolonged storage of gasification slag can consume significant land resources and pollute land and water resources. Therefore, the large-scale and efficient utilization of gasification slag, particularly its nutrients, to reduce environmental impact and increase business efficiency, is a pressing issue.
[0003] Therefore, the use of gasification slag-based lawn composite pellet matrix for lawn construction can open up new areas of utilization of gasification slag and add value, which is in line with the current industrial development requirements of energy conservation, environmental protection and circular economy. Summary of the Invention
[0004] The present invention utilizes a fumed slag-based lawn composite pellet matrix for lawn establishment to address the following issues: light grass seeds are easily lost during sowing; grass seeds need to be compacted manually after sowing and sink into the substrate; grass seeds are not compacted in time after sowing, leading to birds eating them; and Si, CaO, Al, and Fe elements in fumed slag are not easily excited.
[0005] In order to solve the above technical problems, the present invention is implemented through the following technical solutions.
[0006] The present invention provides a gasified slag-based lawn composite pellet matrix, wherein the lawn composite pellet matrix comprises the following raw materials in percentage by mass:
[0007]
[0008] The grass seeds are perennial ryegrass seeds.
[0009] The probiotic is one of Bacillus subtilis, Bacillus licheniformis and Bacillus mucilaginosus.
[0010] The bonding-water-retaining composite agent is a mixture of a bonding agent and a water-retaining agent, wherein the mass ratio of the bonding agent to the water-retaining agent is 10:1 to 10:3. The bonding agent is 350-450 mesh bentonite micropowder, and the water-retaining agent is 100-200 mesh polyacrylic acid sodium salt water-retaining agent.
[0011] The organic biomass is a mixture of Pleurotus geesteranus residue and Lentinus edodes residue, and the mass ratio of Pleurotus geesteranus residue to Lentinus edodes residue is 3:1 to 1:3.
[0012] The water is tap water.
[0013] The chemical composition weight percentages of the gasified slag micropowder are: SiO2 (34.83%), CaO (18.57%), Al2O3 (17.66%), Fe2O3 (14.13%), SO3 (7.41%), Na2O (1.85%), K2O (1.63%), MgO (1.40%), ZnO (0.85%), TiO2 (0.73%), and others (0.94%); the fineness of the gasified slag micropowder is 400 mesh to 500 mesh, and the pH value is 8.52 to 8.68.
[0014] The present invention also provides a method for preparing the above-mentioned gasified slag-based lawn composite pellet matrix, which specifically comprises the following steps:
[0015] The grass seeds and the adhesive-water-retaining composite agent are mixed by using a vacuum mixer at a stirring speed of 40 r / min to 60 r / min, a stirring time of 45 min to 60 min, and a vacuum degree of 0.03 MPa to 0.05 MPa to obtain a mixture A.
[0016] The probiotics, organic biomass and gasification slag powder are mixed by a mixer at a stirring speed of 40 r / min to 60 r / min and a stirring time of 90 min to 120 min to obtain a mixture B.
[0017] Mixture A is mixed with 1 / 5 water using a disc pelletizer at a speed of 20 r / min to 25 r / min and an inclination angle of 40° to 60° to form mother balls. Mixture B is mixed with 4 / 5 water using a mixer at a stirring speed of 150 r / min to 200 r / min and a stirring time of 30 min to 45 min. After forming a slurry, it is sprayed into the disc pelletizer and mixed with the mother balls, causing the mother balls to gradually grow and become dense, thereby obtaining a gasified slag-based turfgrass composite pellet matrix with a particle size of 8 mm to 12 mm.
[0018] The innovation of the present invention:
[0019] (1) Organic biomass is bacterial residue, which has good physical and chemical properties after being decomposed by probiotics. It increases the looseness and air permeability of the gasified slag powder and can also be used to prepare and supplement nutrients. Probiotics can stimulate the Si, CaO, Al, and Fe elements in the gasified slag, while improving the substrate, promoting nutrient absorption of the lawn and enhancing the disease resistance of the plant.
[0020] (2) In the bonding-water-retaining composite agent, on the one hand, the bentonite micropowder has a porous structure and can adsorb grass seeds under negative pressure; on the other hand, the sodium polyacrylate water-retaining agent agglomerates with water and can quickly form a "mother ball" with the grass seeds and bentonite micropowder. At the same time, it has good water retention and can provide a water environment for organic biomass and probiotics to stimulate gasification slag.
[0021] (3) The grass seeds and the adhesive-water-retaining compound form a "mother ball," on the outside of which is a shell composed of organic biomass, probiotics, and gasified slag. Both the mother ball and the shell have a certain water environment, which can promote and maintain the early growth of the grass seeds.
[0022] (4) The 8mm-12mm gasified slag-based lawn composite pellet matrix allows the grass seeds to be wrapped and weighted, making it easier to sow the seeds. This eliminates the need for manual treading and embedding of the grass seeds into the matrix after sowing, reducing bird damage to the grass seeds.
[0023] Compared with the prior art, the present invention has the following beneficial effects:
[0024] 1. The present invention solves the problems that grass seeds are light in weight and easily lost during sowing; the grass seeds need to be manually compacted after sowing and sink into the substrate; the grass seeds are not compacted in time after sowing, resulting in birds eating the grass seeds; and the Si, CaO, Al, and Fe elements in the gasification slag are not easily excited.
[0025] 2. The present invention utilizes the gasified slag-based lawn composite pellet matrix for lawn planting, which can open up new areas of utilization of gasified slag and add value, and is in line with the current industrial development requirements of energy conservation, environmental protection, and circular economy. DETAILED DESCRIPTION
[0026] The present invention is described in detail below with reference to specific embodiments, but the present invention is not limited to the following embodiments.
[0027] Example 1
[0028] Taking the preparation of 100 g of the gasified slag-based lawn composite pellet matrix of the present invention as an example, the components and their mass ratios are as follows:
[0029]
[0030] The grass seeds are perennial ryegrass seeds.
[0031] The probiotic is Bacillus subtilis.
[0032] The bonding-water-retaining compound is a mixture of a bonding agent and a water-retaining agent, wherein the mass ratio of the bonding agent to the water-retaining agent is 10:3. The bonding agent is 350 mesh bentonite powder and the water-retaining agent is 100 mesh polyacrylic acid sodium salt water-retaining agent.
[0033] The organic biomass is a mixture of Pleurotus geesteranus residue and Lentinus edodes residue, and the mass ratio of Pleurotus geesteranus residue to Lentinus edodes residue is 1:1.
[0034] The water is tap water.
[0035] The chemical composition of the gasified slag micropowder is SiO2 (34.83%), CaO (18.57%), Al2O3 (17.66%), Fe2O3 (14.13%), SO3 (7.41%), Na2O (1.85%), K2O (1.63%), MgO (1.40%), ZnO (0.85%), TiO2 (0.73%), and others (0.94%); the fineness of the gasified slag micropowder is 400 mesh and the pH value is 8.68.
[0036] The grass seeds and the adhesive-water-retaining composite agent were mixed by using a vacuum mixer at a stirring speed of 60 r / min, a stirring time of 45 min, and a vacuum degree of 0.03 MPa to obtain a mixture A.
[0037] The probiotics, organic biomass and gasification slag powder were mixed by a mixer at a stirring speed of 60 r / min and a stirring time of 90 min to obtain a mixture B.
[0038] Mixture A was mixed with 1 / 5 water using a disc pelletizer at a speed of 20 r / min and an inclination angle of 40° to form mother balls. Mixture B was mixed with 4 / 5 water using a blender at a stirring speed of 200 r / min for 45 minutes. After forming a slurry, it was sprayed into the disc pelletizer and mixed with the mother balls, causing the mother balls to gradually grow and become dense, resulting in a gasified slag-based turfgrass composite pellet matrix with a particle size of 10 mm.
[0039] Example 2
[0040] Taking the preparation of 100 g of the gasified slag-based lawn composite pellet matrix of the present invention as an example, the components and their mass ratios are as follows:
[0041]
[0042]
[0043] The grass seeds are perennial ryegrass seeds.
[0044] The probiotic is Bacillus subtilis.
[0045] The bonding-water-retaining compound is a mixture of a bonding agent and a water-retaining agent, wherein the mass ratio of the bonding agent to the water-retaining agent is 10:1. The bonding agent is 400 mesh bentonite powder and the water-retaining agent is 150 mesh polyacrylic acid sodium salt water-retaining agent.
[0046] The organic biomass is a mixture of Pleurotus geesteranus residue and Lentinus edodes residue, and the mass ratio of Pleurotus geesteranus residue to Lentinus edodes residue is 3:1.
[0047] The water is tap water.
[0048] The chemical composition of the gasified slag micropowder is SiO2 (34.83%), CaO (18.57%), Al2O3 (17.66%), Fe2O3 (14.13%), SO3 (7.41%), Na2O (1.85%), K2O (1.63%), MgO (1.40%), ZnO (0.85%), TiO2 (0.73%), and others (0.94%); the fineness of the gasified slag micropowder is 500 mesh and the pH value is 8.64.
[0049] The grass seeds and the adhesive-water-retaining composite agent were mixed by using a vacuum mixer at a stirring speed of 50 r / min, a stirring time of 60 min, and a vacuum degree of 0.04 MPa to obtain a mixture A.
[0050] The probiotics, organic biomass and gasification slag powder were mixed by a mixer at a stirring speed of 50 r / min and a stirring time of 110 min to obtain a mixture B.
[0051] Mixture A was mixed with 1 / 5 water using a disc pelletizer at a speed of 25 r / min and an inclination angle of 50° to form mother balls. Mixture B was mixed with 4 / 5 water using a blender at a stirring speed of 160 r / min for 40 minutes. After forming a slurry, it was sprayed into the disc pelletizer and mixed with the mother balls, causing the mother balls to gradually grow and become dense, resulting in a gasified slag-based turfgrass composite pellet matrix with a particle size of 12 mm.
[0052] Example 3
[0053] Taking the preparation of 100 g of the gasified slag-based lawn composite pellet matrix of the present invention as an example, the components and their mass ratios are as follows:
[0054]
[0055] The grass seeds are perennial ryegrass seeds.
[0056] The probiotic is Bacillus licheniformis.
[0057] The bonding-water-retaining compound is a mixture of a bonding agent and a water-retaining agent, wherein the mass ratio of the bonding agent to the water-retaining agent is 10:2. The bonding agent is 450 mesh bentonite powder and the water-retaining agent is 200 mesh polyacrylic acid sodium salt water-retaining agent.
[0058] The organic biomass is a mixture of Pleurotus geesteranus residue and Lentinus edodes residue, and the mass ratio of Pleurotus geesteranus residue to Lentinus edodes residue is 2:1.
[0059] The water is tap water.
[0060] The chemical composition of the gasified slag micropowder is SiO2 (34.83%), CaO (18.57%), Al2O3 (17.66%), Fe2O3 (14.13%), SO3 (7.41%), Na2O (1.85%), K2O (1.63%), MgO (1.40%), ZnO (0.85%), TiO2 (0.73%), and others (0.94%); the fineness of the gasified slag micropowder is 450 mesh and the pH value is 8.52.
[0061] The grass seeds and the adhesive-water-retaining composite agent were mixed by using a vacuum mixer at a stirring speed of 40 r / minn, a stirring time of 55 min, and a vacuum degree of 0.05 MPa to obtain a mixture A.
[0062] The probiotics, organic biomass and gasification slag powder were mixed by a mixer at a stirring speed of 40 r / min and a stirring time of 120 min to obtain a mixture B.
[0063] Mixture A was mixed with 1 / 5 water using a disc pelletizer at a speed of 23 r / min and an inclination angle of 60° to form mother balls. Mixture B was mixed with 4 / 5 water using a blender at a stirring speed of 180 r / min for 30 minutes. After forming a slurry, it was sprayed into the disc pelletizer and mixed with the mother balls, causing the mother balls to gradually grow and become dense, resulting in a gasified slag-based turfgrass composite pellet matrix with a particle size of 8 mm.
[0064] Example 4
[0065] Taking the preparation of 100 g of the gasified slag-based lawn composite pellet matrix of the present invention as an example, the components and their mass ratios are as follows:
[0066]
[0067] The grass seeds are perennial ryegrass seeds.
[0068] The probiotic is Bacillus licheniformis.
[0069] The bonding-water-retaining compound is a mixture of a bonding agent and a water-retaining agent, wherein the mass ratio of the bonding agent to the water-retaining agent is 10:1. The bonding agent is 450 mesh bentonite powder and the water-retaining agent is 100 mesh polyacrylic acid sodium salt water-retaining agent.
[0070] The organic biomass is a mixture of Pleurotus geesteranus residue and Lentinus edodes residue, and the mass ratio of Pleurotus geesteranus residue to Lentinus edodes residue is 1:3.
[0071] The water is tap water.
[0072] The chemical composition of the gasified slag micropowder is SiO2 (34.83%), CaO (18.57%), Al2O3 (17.66%), Fe2O3 (14.13%), SO3 (7.41%), Na2O (1.85%), K2O (1.63%), MgO (1.40%), ZnO (0.85%), TiO2 (0.73%), and others (0.94%); the fineness of the gasified slag micropowder is 500 mesh and the pH value is 8.56.
[0073] The grass seeds and the adhesive-water-retaining composite agent were mixed by using a vacuum mixer at a stirring speed of 50 r / min, a stirring time of 50 min, and a vacuum degree of 0.05 MPa to obtain a mixture A.
[0074] The probiotics, organic biomass and gasification slag powder were mixed by a mixer at a stirring speed of 60 r / min and a stirring time of 100 min to obtain a mixture B.
[0075] Mixture A was mixed with 1 / 5 water using a disc pelletizer at a speed of 22 r / min and an inclination angle of 40° to form mother balls. Mixture B was mixed with 4 / 5 water using a blender at a stirring speed of 150 r / min for 35 minutes. After forming a slurry, it was sprayed into the disc pelletizer and mixed with the mother balls, causing the mother balls to gradually grow and become dense, resulting in a gasified slag-based turfgrass composite pellet matrix with a particle size of 11 mm.
[0076] Example 5
[0077] Taking the preparation of 100 g of the gasified slag-based lawn composite pellet matrix of the present invention as an example, the components and their mass ratios are as follows:
[0078]
[0079] The grass seeds are perennial ryegrass seeds.
[0080] The probiotic is Bacillus subtilis.
[0081] The bonding-water-retaining compound is a mixture of a bonding agent and a water-retaining agent, wherein the mass ratio of the bonding agent to the water-retaining agent is 10:3. The bonding agent is 400 mesh bentonite powder and the water-retaining agent is 200 mesh polyacrylic acid sodium salt water-retaining agent.
[0082] The organic biomass is a mixture of Pleurotus geesteranus residue and Lentinus edodes residue, and the mass ratio of Pleurotus geesteranus residue to Lentinus edodes residue is 2:1.
[0083] The water is tap water.
[0084] The chemical composition of the gasified slag micropowder is SiO2 (34.83%), CaO (18.57%), Al2O3 (17.66%), Fe2O3 (14.13%), SO3 (7.41%), Na2O (1.85%), K2O (1.63%), MgO (1.40%), ZnO (0.85%), TiO2 (0.73%), and others (0.94%); the fineness of the gasified slag micropowder is 400 mesh and the pH value is 8.60.
[0085] The grass seeds and the adhesive-water-retaining composite agent were mixed by using a vacuum mixer at a stirring speed of 60 r / min, a stirring time of 55 min, and a vacuum degree of 0.04 MPa to obtain a mixture A.
[0086] The probiotics, organic biomass and gasification slag powder were mixed by a mixer at a stirring speed of 40 r / min and a stirring time of 90 min to obtain a mixture B.
[0087] Mixture A was mixed with 1 / 5 water using a disc pelletizer at a speed of 21 r / min and an inclination angle of 60° to form mother balls. Mixture B was mixed with 4 / 5 water using a blender at a stirring speed of 170 r / min for 45 minutes. After forming a slurry, it was sprayed into the disc pelletizer and mixed with the mother balls, causing the mother balls to gradually grow and become dense, resulting in a gasified slag-based turfgrass composite pellet matrix with a particle size of 9 mm.
[0088] Example 6
[0089] Taking the preparation of 100 g of the gasified slag-based lawn composite pellet matrix of the present invention as an example, the components and their mass ratios are as follows:
[0090]
[0091]
[0092] The grass seeds are perennial ryegrass seeds.
[0093] The probiotic is Bacillus subtilis.
[0094] The bonding-water-retaining compound is a mixture of a bonding agent and a water-retaining agent, wherein the mass ratio of the bonding agent to the water-retaining agent is 10:2. The bonding agent is 350 mesh bentonite powder and the water-retaining agent is 150 mesh polyacrylic acid sodium salt water-retaining agent.
[0095] The organic biomass is a mixture of Pleurotus geesteranus residue and Lentinus edodes residue, and the mass ratio of Pleurotus geesteranus residue to Lentinus edodes residue is 1:2.
[0096] The water is tap water.
[0097] The chemical composition of the gasified slag micropowder is SiO2 (34.83%), CaO (18.57%), Al2O3 (17.66%), Fe2O3 (14.13%), SO3 (7.41%), Na2O (1.85%), K2O (1.63%), MgO (1.40%), ZnO (0.85%), TiO2 (0.73%), and others (0.94%) in percentage by weight; the fineness of the gasified slag micropowder is 450 mesh and the pH value is 8.60.
[0098] The grass seeds and the adhesive-water-retaining composite agent were mixed by using a vacuum mixer at a stirring speed of 40 r / min, a stirring time of 50 min, and a vacuum degree of 0.03 MPa to obtain a mixture A.
[0099] The probiotics, organic biomass and gasification slag powder were mixed by a mixer at a stirring speed of 50 r / min and a stirring time of 110 min to obtain a mixture B.
[0100] Mixture A was mixed with 1 / 5 water using a disc pelletizer at a speed of 24 r / min and an inclination angle of 50° to form mother balls. Mixture B was mixed with 4 / 5 water using a blender at a stirring speed of 190 r / min for 40 minutes. After forming a slurry, it was sprayed into the disc pelletizer and mixed with the mother balls, causing the mother balls to gradually grow and become dense, resulting in a gasified slag-based turfgrass composite pellet matrix with a particle size of 10 mm.
[0101] Comparative Example 1
[0102] Taking the preparation of 100 g of the gasified slag-based lawn composite pellet matrix of the present invention as an example, the components and their mass ratios are as follows:
[0103]
[0104] The grass seeds are perennial ryegrass seeds.
[0105] The probiotic is Bacillus subtilis.
[0106] The organic biomass is a mixture of Pleurotus geesteranus residue and Lentinus edodes residue, and the mass ratio of Pleurotus geesteranus residue to Lentinus edodes residue is 1:2.
[0107] The water is tap water.
[0108] The chemical composition of the gasified slag micropowder is SiO2 (34.83%), CaO (18.57%), Al2O3 (17.66%), Fe2O3 (14.13%), SO3 (7.41%), Na2O (1.85%), K2O (1.63%), MgO (1.40%), ZnO (0.85%), TiO2 (0.73%), and others (0.94%) in percentage by weight; the fineness of the gasified slag micropowder is 450 mesh and the pH value is 8.60.
[0109] The probiotics, organic biomass and gasification slag powder were mixed by a mixer at a stirring speed of 50 r / min and a stirring time of 110 min to obtain a mixture B.
[0110] Grass seeds were mixed with 1 / 5 water using a disc pelletizer at a speed of 24 r / min and an inclination angle of 50° to form mother balls. Mixture B was mixed with 4 / 5 water using a blender at a stirring speed of 190 r / min for 40 minutes. The resulting slurry was sprayed into the disc pelletizer and mixed with the mother balls, causing them to grow and compact gradually. This resulted in a 10 mm particle size fumed slag-based lawn composite pellet matrix.
[0111] Comparative Example 2
[0112] Taking the preparation of 100 g of the gasified slag-based lawn composite pellet matrix of the present invention as an example, the components and their mass ratios are as follows:
[0113]
[0114] The grass seeds are perennial ryegrass seeds.
[0115] The bonding-water-retaining compound is a mixture of a bonding agent and a water-retaining agent, wherein the mass ratio of the bonding agent to the water-retaining agent is 10:2. The bonding agent is 350 mesh bentonite powder and the water-retaining agent is 150 mesh polyacrylic acid sodium salt water-retaining agent.
[0116] The organic biomass is a mixture of Pleurotus geesteranus residue and Lentinus edodes residue, and the mass ratio of Pleurotus geesteranus residue to Lentinus edodes residue is 1:2.
[0117] The water is tap water.
[0118] The chemical composition of the gasified slag micropowder is SiO2 (34.83%), CaO (18.57%), Al2O3 (17.66%), Fe2O3 (14.13%), SO3 (7.41%), Na2O (1.85%), K2O (1.63%), MgO (1.40%), ZnO (0.85%), TiO2 (0.73%), and others (0.94%) in percentage by weight; the fineness of the gasified slag micropowder is 450 mesh and the pH value is 8.60.
[0119] The grass seeds and the adhesive-water-retaining composite agent were mixed by using a vacuum mixer at a stirring speed of 40 r / min, a stirring time of 50 min, and a vacuum degree of 0.03 MPa to obtain a mixture A.
[0120] The organic biomass and the gasification slag powder were mixed by a mixer at a stirring speed of 50 r / min and a stirring time of 110 min to obtain a mixture B.
[0121] Mixture A was mixed with 1 / 5 water using a disc pelletizer at a speed of 24 r / min and an inclination angle of 50° to form mother balls. Mixture B was mixed with 4 / 5 water using a blender at a stirring speed of 190 r / min for 40 minutes. After forming a slurry, it was sprayed into the disc pelletizer and mixed with the mother balls, causing the mother balls to gradually grow and become dense, resulting in a gasified slag-based turfgrass composite pellet matrix with a particle size of 10 mm.
[0122] The performance test results of the gasified slag-based lawn composite pellet matrix prepared in Examples 1 to 6 and Comparative Examples 1 to 2 are as follows:
[0123] Table 1. Effect of gasification slag-based turf composite pellet matrix on turf performance
[0124]
Claims
1. A gasified slag-based lawn composite pellet matrix, characterized in that: The raw materials of the lawn composite pellet matrix are as follows by mass percentage:
2. The gasified slag-based lawn composite pellet matrix according to claim 1, characterized in that: The grass seeds are perennial ryegrass seeds.
3. The gasified slag-based lawn composite pellet matrix according to claim 1, characterized in that: The probiotic is one of Bacillus subtilis, Bacillus licheniformis and Bacillus mucilaginosus.
4. The gasified slag-based lawn composite pellet matrix according to claim 1, characterized in that: The bonding-water-retaining composite agent is a mixture of a bonding agent and a water-retaining agent, wherein the mass ratio of the bonding agent to the water-retaining agent is 10:1 to 10:3; the bonding agent is 350-450 mesh bentonite micropowder; and the water-retaining agent is 100-200 mesh polyacrylic acid sodium salt water-retaining agent.
5. The gasified slag-based lawn composite pellet matrix according to claim 1, characterized in that: The organic biomass is a mixture of Pleurotus geesteranus residue and Lentinus edodes residue, and the mass ratio of Pleurotus geesteranus residue to Lentinus edodes residue is 3:1 to 1:
3.
6. The gasified slag-based lawn composite pellet matrix according to claim 1, characterized in that: The water is tap water.
7. The gasified slag-based lawn composite pellet matrix according to claim 1, characterized in that: The chemical composition of the fumed slag micropowder is as follows: SiO2 34.83%, CaO 18.57%, Al2O3 17.66%, Fe2O3 14.13%, SO3 7.41%, Na2O 1.85%, K2O 1.63%, MgO 1.40%, ZnO 0.85%, TiO2 0.73%, and other 0.94% by weight; the fineness of the fumed slag micropowder is 400 mesh to 500 mesh, and the pH value is 8.52 to 8.
68.
8. A method for preparing the gasified slag-based lawn composite pellet matrix as claimed in claim 1, characterized in that The steps include: The grass seeds and the adhesive-water-retaining composite agent are mixed using a vacuum mixer at a stirring speed of 40 r / min to 60 r / min, a stirring time of 45 min to 60 min, and a vacuum degree of 0.03 MPa to 0.05 MPa to obtain a mixture A; The probiotics, organic biomass and gasification slag powder are mixed in a mixer at a stirring speed of 40 to 60 r / min and a stirring time of 90 to 120 min to obtain a mixture B; The mixture A is mixed with 1 / 5 water by using a disc pelletizer at a rotation speed of 20 r / min to 25 r / min and an inclination angle of 40° to 60° to form mother balls; the mixture B is mixed with 4 / 5 water by using a stirrer at a stirring speed of 150 r / min to 200 r / min and a stirring time of 30 min to 45 min. After the slurry is formed, it is sprayed into the disc pelletizer to mix with the mother balls, so that the mother balls are gradually grown and dense, and a gasified slag-based lawn composite pellet matrix with a particle size of 8 mm to 12 mm is obtained.