A method for producing turf blanks in alpine grassland meadow areas

Abstract

The present invention discloses a method for producing turf blanks in alpine grassland meadows, comprising: filling a mold with crushed turf, and subjecting the mold to enclosure and curing to obtain the turf blank; obtaining quality data of the exposed soil layer portion and the soil layer portion of the turf blank, and performing a comprehensive quality evaluation of the turf blank based on all the obtained quality data; and demolding the turf blanks that meet the comprehensive quality evaluation and then re-laying them on the surface of the area to be restored in the alpine grassland meadow. This method utilizes the soil-fixing properties of plant roots to reconstruct a suitable habitat for plant growth, rapidly enhancing the vitality and activity of the turf blanks to cope with the harsh environmental stresses of high altitude areas, facilitating the resource utilization of crushed turf and the rapid restoration of vegetation in alpine grassland meadows, enabling industrialized production, and being eco-friendly and sustainable.

Description

Technical Field

[0001] The invention belongs to the technical field of vegetation restoration, and in particular relates to a method for producing turf blanks in alpine grassland meadow areas. Background Art

[0002] The Qinghai-Tibet Plateau serves as a crucial ecological barrier for my country. To adapt to the harsh, alpine, and oxygen-deficient environment, a layer of grass blanket has formed over centuries or even longer in some areas. This blanket plays a vital role in conserving water and soil, regulating the climate, purifying the air, and providing the means of production. However, construction projects have torn the blanket apart and stripped away the topsoil, completely exposing the underlying soil and sand. These layers are gradually transformed into dust in strong winds, thereby losing their soil and water conservation and water conservation functions. The alpine grassland meadows are pristine and fragile, with slow material and energy conversion processes in their ecosystems. The prolonged low temperatures and short growing seasons make the blanket layer, once destroyed, very slow to recover, accelerating permafrost thawing, desertification, and soil erosion, leading to ecological imbalance and even ecological disasters.

[0003] The common grass blanket layer on the Qinghai-Tibet Plateau is composed of a tangled mixture of living and dead plant roots and fine particles. It has a high root-to-soil ratio and a thin weathered layer. The coarse debris or bedrock underlying the root-soil mixture is highly resistant to weathering, making it difficult for plant roots to grow deeply. Appropriately sized turf patches provide an ideal habitat for plants, acting as a barrier to prevent soil erosion and safeguarding ecological security. Turf patches effectively retain soil moisture. In plateau areas, with large temperature swings between morning and evening and intense solar radiation, soil moisture evaporates and is lost at a rapid rate. Covering with turf patches reduces evaporation, providing a moisturizing effect that facilitates water absorption and utilization by plant roots, promoting vegetation survival. Turf patches effectively protect the soil and reduce wind and water erosion. Plateau areas are often subject to strong winds, and turf patches form a thick vegetation cover on the ground, effectively slowing wind speeds and reducing the risk of wind erosion. Turf patches also intercept precipitation, increase surface roughness, and reduce the sediment-carrying capacity of water, thereby reducing water erosion. This protective effect prevents soil loss and erosion, providing a stable soil foundation for plant growth. Turf patches provide favorable conditions for plant growth, playing a vital role in preventing grassland degradation and protecting the ecological environment. Turf patches create a suitable habitat, allowing native plants adapted to the plateau environment to take advantage of the short growing season and grow rapidly, contributing to vegetation restoration and forming a biodiverse and more stable vegetation layer.

[0004] A common vegetation protection and restoration measure in alpine grassland meadows involves stripping native turf during construction. This increases the area of ​​the excavated and filled sections compared to the original landform, and there is loss during maintenance and transportation, leading to a bottleneck in the supply of turf blocks for re-laying. Given the significant advantages of turf blocks in the sensitive and fragile environment of alpine grassland meadows, rapidly producing turf blocks adapted to the local habitat has become an environmentally friendly and effective solution to shorten vegetation recovery time and accelerate ecological restoration in these areas. Summary of the Invention

[0005] In order to solve the problems of soil erosion caused by the destruction of landform vegetation by highway and railway projects in alpine grassland meadow areas, the large differences in the restoration and protection effects of newly built surface vegetation, the vegetation degradation phenomena such as reduced coverage and reduced diversity in some road areas, and the insufficient amount of re-laid turf, etc., the present invention provides a method for producing turf blanks in alpine grassland meadow areas. The present invention utilizes the soil-fixing properties of plant roots, and through the four steps of filling molds with crushed turf, shaping the blanks through enclosure and maintenance, shaping and demolding the turf blanks, and project quality assessment, a number of crushed turfs are integrated to reconstruct the minimum suitable habitat, and then produce vital turf blanks and re-laid. The method of the present invention can quickly produce turf blanks that adapt to local habitats, which is conducive to the resource utilization of crushed turf and the rapid restoration of vegetation in alpine grassland meadow areas.

[0006] Specifically, the production method of turf blanks in alpine grassland meadow areas provided by the present invention includes: filling a mold with crushed turf, and obtaining a turf blank through enclosure and maintenance; obtaining quality data of the quality indicators of the exposed soil layer part and the soil layer part of the turf blank, and performing a comprehensive quality evaluation on the turf blank based on all the quality data obtained; the quality indicators of the exposed soil layer part include coverage, vegetation density, color, uniformity and growth rate; the quality indicators of the soil layer part include root-to-stem ratio, root network, turf block integrity, underground biomass and density; the turf blanks that pass the comprehensive quality evaluation are demolded and then laid back on the surface of the area to be repaired in the alpine grassland meadow area.

[0007] According to a specific embodiment of the present invention, the filling and pressing mold includes: 1) evenly spreading undisturbed soil on the bottom of the mold; 2) evenly filling the mold with crushed turf; 3) filling the gaps between the crushed turf and between the crushed turf and the inner wall of the mold with a mixture of undisturbed soil and organic soil; 4) sowing an appropriate amount of grass seeds and covering the surface with soil; 5) compacting the crushed turf; 6) covering; preferably, in the mixed soil, the mass ratio of undisturbed soil to organic soil is not greater than 5:1; preferably, the grass seeds are seeds of cool-season forage grass.

[0008] According to a specific embodiment of the present invention, enclosure maintenance includes regular and appropriate watering and fertilization to provide water and nutrient supply.

[0009] According to a specific embodiment of the present invention, the comprehensive quality evaluation method includes:

[0010] a. Establish a quality evaluation model:

[0011] Establish the corresponding relationships between the quality data and scores of the exposed soil layer, and the total scores and the three grades of excellent, medium and poor, which are recorded as the first and second corresponding relationships respectively; establish the corresponding relationships between the quality data and scores of the soil layer, and the total scores and the three grades of excellent, medium and poor, which are recorded as the third and fourth corresponding relationships respectively; establish the corresponding relationships between the exposed soil layer and the soil layer grades and the product qualification judgment standards, which are recorded as the fifth corresponding relationship; preset the weight ratios of the various quality indicators of the exposed soil layer and the soil layer according to their importance;

[0012] b. Comprehensive quality evaluation:

[0013] Obtaining scores for each quality index of the exposed soil layer portion based on the obtained quality data of the exposed soil layer portion and the first corresponding relationship; obtaining scores for each quality index of the soil layer portion based on the obtained quality data of the soil layer portion and the third corresponding relationship;

[0014] The total score of the exposed soil layer and the total score of the soil layer are calculated according to the following formula:

[0015]

[0016]

[0017] Where: k is the score of each quality index of the exposed soil layer, wk is the weight ratio of the quality index, and R is the total score of the exposed soil layer; k′ is the score of each quality index of the soil layer, wk′ is the weight ratio of the quality index, and R′ is the total score of the soil layer;

[0018] According to the calculated total score of the exposed soil layer part and the second corresponding relationship, the grade of the exposed soil layer part is obtained; according to the calculated total score of the soil layer part and the fourth corresponding relationship, the grade of the soil layer part is obtained;

[0019] The product qualification determination result is obtained based on the obtained grade of the exposed soil layer part, the grade of the soil layer part, and the fifth corresponding relationship.

[0020] According to a specific embodiment of the present invention, among the quality indicators of the exposed soil layer, the weight ratios of coverage and growth rate are greater than those of other quality indicators; preferably, the weight ratios of coverage, vegetation density, color, uniformity and growth rate are 0.3, 0.2, 0.1, 0.1 and 0.3 respectively.

[0021] According to a specific embodiment of the present invention, among the various quality indicators of the soil layer, the weight ratio of turf block integrity is greater than that of other quality indicators; preferably, the weight ratios of root-to-stem ratio, root network, turf block integrity, underground biomass and density are 0.2, 0.2, 0.3, 0.2 and 0.1 respectively.

[0022] According to a specific embodiment of the present invention, the fifth corresponding relationship is set as follows: when the grade of the exposed soil layer part and the grade of the soil layer part are both excellent, it is judged as a qualified product; when either the grade of the exposed soil layer part or the grade of the soil layer part is poor, it is judged as an unqualified product; the rest are products to be qualified.

[0023] According to a specific embodiment of the present invention, qualified products continue to be sealed and maintained until they are determined to be qualified products through comprehensive quality evaluation.

[0024] According to a specific embodiment of the present invention, after demoulding, unqualified products are re-filled in the mold and sealed and cured until they are determined to be qualified products through comprehensive quality evaluation.

[0025] According to a specific embodiment of the present invention, the method further includes fixing, monitoring and maintaining the turf after re-laying.

[0026] The beneficial effects of the present invention are:

[0027] The production method provided by the present invention combines a number of broken turf into a whole by filling a mold with broken turf, shaping the block blanks through enclosure and maintenance, and finalizing and demolding the turf blanks, and utilizes the soil-fixing characteristics of plant roots to reconstruct a suitable habitat for plant growth, thereby quickly improving the vitality of the turf blanks and vegetation activity to cope with the harsh environmental stresses in high-altitude areas. On this basis, the vegetation construction characteristics and soil and water conservation needs of the alpine grassland meadow area are fully considered, and a new turf blank quality screening method is introduced to make the turf blank acceptance link more objective, comprehensive, scientific and reasonable. Finally, the qualified turf blanks are re-laid to complete the repair. The method of the present invention can quickly obtain turf blanks that are adapted to the local habitat of the alpine grassland meadow area, have suitable specifications and sizes, a special root-soil mixture structure and good soil and water conservation functions, which is conducive to the resource utilization of broken turf and the rapid recovery of vegetation in the alpine grassland meadow area. The method provides a nature-based solution that can achieve standardized industrial production. After repair, it can be deeply integrated with the local landscape, and is ecologically friendly and sustainable. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a process flow chart of the present invention;

[0029] Figure 2 This is a schematic diagram of the turf blank mold of the present invention, wherein 1-tray; 2-water outlet; 3-drainage hole; 4-guide groove; 5-card slot connection (detachable); 6-telescopic rod; 7-stripping plate. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0031] Example 1 Preparation of turf blank

[0032] (1) Construction preparation:

[0033] Develop a reasonable construction plan, including construction site, materials and equipment, construction season, construction personnel, construction procedures, etc., to ensure that work is carried out in an orderly manner according to the plan to improve efficiency and ensure quality.

[0034] (2) Substrate treatment:

[0035] ① Cleaning: Remove gravel, garbage and other debris from the construction site to ensure the base surface is clean and tidy.

[0036] ② Leveling: Use a leveling board or other tools such as a shovel to level the surface of the base and remove uneven parts.

[0037] (3) Mold filling:

[0038] ① Soil laying: In the turf block mold ( Figure 2 The bottom of each trough is evenly spread with undisturbed soil. Each trough is connected by snap-fit ​​slots and is removable. Drain holes, diversion channels, and outlets are located at the bottom of each trough to remove excess water, preventing waterlogging, over-soaking, and root diseases, while maintaining ventilation and healthy root growth.

[0039] ② Filling with chopped turf: Chopped turf refers to turf that is one-third larger than the minimum size of the stripped turf block and does not meet the specifications for direct back-laying. In alpine turf construction, the minimum size of the stripped turf block is generally 20cm × 20cm × 20cm, but the specific standard should be adjusted based on the actual site conditions. First, the thickness and bottom surface of the chopped turf should be trimmed to ensure a smooth and level bottom. Then, the chopped turf should be evenly filled into the mold, ensuring the bottom of the chopped turf is as flat as possible.

[0040] ③ Filling with auxiliary materials: Use a uniform mixture of undisturbed soil and organic soil to fill the gaps between turfs and between turfs and inner walls. The ratio of undisturbed soil to organic soil should not exceed 5:1.

[0041] ④ Sowing grass seeds: To improve the quality of the turf, sow an appropriate amount of grass seeds after filling the soil. It is recommended to sow native plants and mix them. In this example, cool-season forage grasses such as ryegrass and lycopodium are used, and the sowing amount is 11.1g / m 2 and 2.3g / m 2 After sowing, use a small amount of original soil to cover it to ensure that the grass seeds are not exposed.

[0042] (4) Compaction and covering:

[0043] ①Compaction: Use a squeezing plate to compact the crushed turf, and then spray a small amount of water to ensure that the turf is adhered while providing moisture for the growth of grass seeds.

[0044] ② Covering: Use straw mats, non-woven fabrics and other materials to cover the ground for insulation and protection. According to the test results, the temperature difference between day and night in the covered field is 2-3℃ lower than that in the uncovered field, and the soil moisture content is 20% higher.

[0045] (5) Enclosure and maintenance:

[0046] ① Watering and Moisturizing: Watering promotes the adhesion and growth of turf chips. Water promptly after planting to keep the surface moist and ensure that water can penetrate the turf chips and reach the soil to keep the soil moist. Generally, water every three days to help the seeds and turf chips take root.

[0047] ② Maintenance and growth: During the reconstruction of the turf, apply fertilizer and water appropriately to maintain appropriate soil moisture and nutrient supply. At the same time, regularly test various turf indicators.

[0048] Example 2 Turf Blank Quality Inspection and Quality Control Process

[0049] In the turf blank quality acceptance stage, an innovative turf block quality inspection and quality control process is adopted. First, a quality evaluation index system is constructed, then quality evaluation standards are formulated, and then the turf block quality is comprehensively evaluated. Finally, the blue, green and red three-level product quality control process is used to achieve turf blank quality inspection and quality control, thereby ensuring the high-standard completion of the project.

[0050] (1) Quality evaluation index system

[0051] According to the nature of the factors that constitute the quality of turf slabs, 10 quality evaluation indicators are selected from the exposed soil layer and the soil layer. The indicators are explained as follows:

[0052] ① Exposed soil layer

[0053] a. Coverage: Coverage is the ratio of the ground area covered by turf to the total area. The greater the coverage, the less exposed ground, and the better the quality.

[0054] b. Vegetation density: Vegetation density refers to the number of plants or branches per unit area of ​​turf. The higher the density, the better the quality.

[0055] c. Color: Color is the evaluation standard for the greenness and purity of turf. The darker and purer the green, the better the quality.

[0056] d. Uniformity: Uniformity refers to the uniformity of the turf surface. The higher the uniformity, the better the quality.

[0057] e. Growth Rate: Growth rate reflects, to a certain extent, the turf's ability to grow and recover after being trampled. The shorter the growth rate, the greater the turf's productivity and quality.

[0058] ②Soil layer

[0059] a. Root-to-shoot ratio: The root-to-shoot ratio is the ratio of the underground dry weight to the above-ground dry weight of the turf. A balanced root-to-shoot ratio and enhanced stress resistance will result in better quality.

[0060] b. Root network: Root network refers to the density of the turf root system. The denser the network, the stronger the turf's tensile strength and the better the quality.

[0061] c. Turf block integrity: Evaluate the integrity of the turf blocks after removal. The fewer cracks and fragments, the better the quality.

[0062] d. Underground biomass: Underground biomass is the dry weight of organic matter within a certain depth of the turf soil layer. The higher the dry weight, the better the quality.

[0063] e. Density: Density reflects the degree of contact between the re-laid turf and the soil, measured by the contact area per square meter. The higher the density, the better the quality.

[0064] (2) Quality evaluation standards

[0065] To objectively reflect the differences in turf quality, the evaluation indicators were divided into three levels, and corresponding grading standards were determined based on the characteristics of each indicator. Based on the turf quality evaluation indicators and the characteristics of the grades, a 9-point scoring system was adopted (Table 1). The score of each indicator depends on the difference in the corresponding grade.

[0066] Table 1 Turf blank quality evaluation table

[0067]

[0068] (3) Comprehensive quality evaluation model

[0069] To objectively, efficiently, and rationally assess the quality of turf slabs, this paper uses a weighted comprehensive evaluation method to integrate various indicators, thereby objectively and comprehensively evaluating the quality of turf slabs from both the exposed soil layer and the soil layer. Based on the quality requirements of turf slabs, the quality evaluation indicators are weighted according to their importance, as shown in Table 2. The comprehensive evaluation formulas are shown in Equations (1) and (2).

[0070]

[0071]

[0072] Where:

[0073] k is the score of each quality index of the exposed soil layer, wk is the weight ratio of the quality index, and R is the total score of the exposed soil layer; k′ is the score of each quality index of the soil layer, wk′ is the weight ratio of the quality index, and R′ is the total score of the soil layer;

[0074] Table 2 Summary of turf block quality evaluation index weights

[0075]

[0076]

[0077] The weighted comprehensive evaluation method (Formula 1) was used to calculate the comprehensive evaluation values ​​of the exposed soil layer and the soil layer. Based on the quality requirements of the turf blocks and the reference comprehensive evaluation values, the turf blocks were classified into three levels: excellent, medium, and poor. Furthermore, a comprehensive evaluation standard for turf block quality was developed (Table 3), which categorized the turf blocks into three categories: qualified (meeting quality standards), qualified (medium quality requiring improvement), and unqualified (poor quality requiring rework).

[0078] Table 3 Comprehensive evaluation table of turf quality

[0079]

[0080] (4) Level 3 product quality control process

[0081] According to the comprehensive evaluation table of turf blank quality (Table 3), the turf blanks in area A1B1 are qualified products that meet the quality standards; the turf blanks in areas A1B1, A2B1, and A2B2 are qualified products with medium quality and need to be improved; the turf blanks in areas A1B3, A2B3, A3B1, A3B2, and A3B3 are unqualified products with poor quality and need to be reworked. Figure 1 ), turf blanks of different qualities were processed as follows;

[0082] ① Area (A1B1): The turf blanks are qualified products that meet the quality standards. After demoulding, they enter the 8th step "turf re-laying" and re-lay the qualified turf blanks to the designated project area;

[0083] ② Area (A1B1, A2B1, A2B2): The turf blanks are substandard products of medium quality that need to be improved. They are cultured for an extended period and enter the 5th step, "enclosure and maintenance". After passing the quality inspection, they are demolded and enter the 8th step, "turf repaving".

[0084] ③ Area (A1B3, A2B3, A3B1, A3B2, A3B3): The turf blanks are unqualified products of poor quality that need to be reworked. They are reworked and enter the 3rd step, "mold filling", and the cultivation and production of turf blanks are carried out again until the quality inspection is passed.

[0085] Example 3 Demolding and Repaving

[0086] (1) Overall demolding:

[0087] The qualified turf blanks are demolded by controlling the telescopic rod of the demolding plate (extrusion plate). In addition, the demolding plate / extrusion plate (single plate) and the single groove correspond through the number TB ij (1 < i < m, 1 < j < n). When extruding and demolding, the telescopic rod is extended (the telescopic rod is in a compressed state when the unqualified turf blanks are demolded).

[0088] (2) Turf repaving:

[0089] ① Subgrade treatment:

[0090] a. Cleaning and leveling: Remove the sundries on the construction site and level the surface of the base to ensure that the base surface is clean, tidy and flat.

[0091] b. Reconstruction and soil covering: According to the texture and nutrient status of the base soil, add appropriate amounts of organic fertilizer and humus, and reconstruct a soil layer with a thickness of 0.2 - 0.3 meters on the base surface.

[0092] ② Material filling:

[0093] a. Filling with humus soil: After the turf is repaved, fill the gaps between the turf blocks with humus soil to play a role in root moisturizing and soil connection, and promote the turf to fit with the base surface.

[0094] b. Sowing grass seeds: According to the configuration of local native plants and environmental requirements, select appropriate grass seeds for mixed sowing to ensure the growth of the turf is integrated with the natural environment.

[0095] ③ Turf fixation:

[0096] Use bamboo sticks, wooden sticks or U-shaped nails, etc. to fix the turf to prevent the turf from moving or being misaligned. If there is a slope on the site, the construction is carried out in the order from the top of the slope to the bottom of the slope to ensure that the turf is firmly fixed on the slope surface.

[0097] ④ Regular monitoring and management:

[0098] a. Watering: According to the climate and the growth needs of the turf, water moderately to keep the turf moist.

[0099] b. Fertilization: Apply appropriate amount of fertilizer according to the soil and turf growth conditions to promote better growth of turf.

[0100] c. Pest and disease control: Check the turf regularly and take appropriate control measures if any pest and disease problems are found.

[0101] d. Regular inspection: Regularly check the growth and overall condition of the turf to identify and address problems in a timely manner.

[0102] ⑤Project quality assessment:

[0103] The quality of the turf after it is re-laid is assessed. If it meets the design requirements, the project can be accepted. If it does not meet the requirements, it needs to be stripped off and re-laid.

[0104] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

Claims

1. A method for producing turf blanks in alpine grassland meadow areas, characterized in that: The method comprises: Filling the mold with crushed turf, and then sealing and curing it to obtain a turf blank; Obtaining quality data of quality indicators of the exposed soil layer portion and the soil layer portion of the turf slab, and performing a comprehensive quality evaluation of the turf slab based on all the acquired quality data; the quality indicators of the exposed soil layer portion include coverage, vegetation density, color, uniformity, and growth rate; the quality indicators of the soil layer portion include root-to-stem ratio, root network, turf patch integrity, underground biomass, and density; The turf blanks that have passed the comprehensive quality evaluation are demoulded and then laid back on the surface of the area to be repaired in the alpine grassland meadow area; The comprehensive quality evaluation method includes: a. Establish a quality evaluation model: Establish the corresponding relationship between the quality data and scores of the exposed soil layer, the total score and the three grades of excellent, medium and poor, which are recorded as the first corresponding relationship and the second corresponding relationship respectively; Establish the corresponding relationship between each quality data and score of the soil layer, and the total score and the three grades of excellent, medium and poor, which are recorded as the third corresponding relationship and the fourth corresponding relationship respectively; Establish the corresponding relationship between the exposed soil layer and the soil layer grade and the product qualification judgment standard, which is recorded as the fifth corresponding relationship; Preset the weight ratio of each quality index of the exposed soil layer part and the weight ratio of each quality index of the soil layer part according to different importance; b. Comprehensive quality evaluation: Obtaining scores for each quality index of the exposed soil layer portion based on the obtained quality data of the exposed soil layer portion and the first corresponding relationship; obtaining scores for each quality index of the soil layer portion based on the obtained quality data of the soil layer portion and the third corresponding relationship; The total score of the exposed soil layer and the total score of the soil layer are calculated according to the following formula: （1）； （2）； Where: k is the score of each quality index of the exposed soil layer, wk is the weight ratio of the quality index, R is the total score of the exposed soil layer; k´ is the score of each quality index of the soil layer, wk´ is the weight ratio of the quality index, R´ is the total score of the soil layer; According to the calculated total score of the exposed soil layer part and the second corresponding relationship, the grade of the exposed soil layer part is obtained; according to the calculated total score of the soil layer part and the fourth corresponding relationship, the grade of the soil layer part is obtained; According to the obtained grade of the exposed soil layer, the grade of the soil layer, and the fifth corresponding relationship, the product qualification determination result is obtained; Among the quality indicators of the exposed soil layer, the weight ratios of coverage, vegetation density, color, uniformity and growth rate are 0.3, 0.2, 0.1, 0.1 and 0.3 respectively.

2. The production method according to claim 1, characterized in that The filling mold comprises: 1) Spread the original soil evenly on the bottom of the mold; 2) Fill the mold with chopped turf evenly; 3) Fill the gaps between the chopped turf and between the chopped turf and the inner wall of the mold with a mixture of original soil and organic soil; 4) Sow an appropriate amount of grass seeds and cover the surface with soil; 5) Compact the chopped turf; 6) Cover with a tarpaulin.

3. The production method according to claim 2, characterized in that In the mixed soil, the mass ratio of undisturbed soil to organic soil is no greater than 5:

1.

4. The production method according to claim 2, characterized in that The grass seeds are seeds of cool-season forage grass.

5. The production method according to claim 1, characterized in that The enclosure maintenance includes regular and appropriate watering and fertilizing.

6. The production method according to claim 1, characterized in that Among the various quality indicators of the soil layer, the weight ratio of turf block integrity is greater than that of other quality indicators.

7. The production method according to claim 6, characterized in that The weight ratios of root-to-shoot ratio, root network, turf patch integrity, belowground biomass and density were 0.2, 0.2, 0.3, 0.2 and 0.1, respectively.

8. The production method according to claim 1, characterized in that The fifth corresponding relationship is set as follows: When the grade of the exposed soil layer part and the grade of the soil layer part are both excellent, it is judged as a qualified product; when either the grade of the exposed soil layer part or the grade of the soil layer part is poor, it is judged as an unqualified product; the rest are products to be qualified.

9. The production method according to claim 8, characterized in that The qualified products will continue to be closed and maintained until they are determined to be qualified through comprehensive quality evaluation.

10. The production method according to claim 8, characterized in that After demoulding, unqualified products are re-filled in the mold, sealed and cured until they are determined to be qualified products through comprehensive quality evaluation.

11. The production method according to claim 1, characterized in that It also includes turf fixing, monitoring and maintenance after re-laying.

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