Stable soil vegetation slope protection base material habitat modifier and preparation method thereof

Abstract

The invention relates to the field of slope protection and greening, and discloses a stable soil vegetation slope protection base material habitat modifier and a preparation method thereof. The invention discloses a habitat modifier for a stabilized soil vegetation slope protection base material. The habitat modifier comprises the following components in percentage by mass: 6-15% of a main body, 21-23.2% of a fertilizer, 45.5-46% of a stabilizer, 6-6.5% of a pH value regulator, 10.2-15.3% of a nutritional agent, 0.6-0.8% of an auxiliary agent and 3-3.5% of a compound microbial agent. The stabilized soil vegetation protection slope using the modifier material can neutralize the alkaline pH value of stabilized soil, and a soil acid-base environment suitable for plant growth is built; the soil porosity of the stabilized soil can be improved, and favorable conditions are created for plant growth; the microbial flora number and activity of stabilized soil can be improved, nutrient substance conversion is promoted, the stress resistance of plants is improved, and the healthy and long-acting growth capacity of plant communities is improved; the strength index of the stabilized soil vegetation slope protection can be enhanced, and the erosion resistance of the stabilized soil structure and the slope stability protection capacity are improved.

Description

Technical Field

[0001] The invention relates to the field of slope protection and greening, and in particular to a stabilized soil vegetation slope protection base material habitat improver and a preparation method thereof. Background Art

[0002] Stabilized soil slope protection with vegetation is a slope protection method that combines stabilized soil technology with plant slope protection. Stabilized soil is obtained by mixing soil with specific stabilizers (such as natural gelling agents, cement, etc.) and undergoing certain process treatments to improve the physical and mechanical properties of the soil, thereby increasing the stability and strength of the soil. In stabilized soil slope protection with vegetation, the slope surface is first treated with stabilized soil technology to form a stable slope structure to prevent slope collapse and soil erosion. Then, vegetation is planted on the stable slope surface. The roots of the plants can penetrate deep into the soil, which plays a role in reinforcing the soil and preventing soil erosion. At the same time, it can also beautify the environment and improve the ecology.

[0003] However, the existing stabilized soil slope protection still needs to be improved in promoting plant growth. The existing stabilized soil slope protection soil is generally alkaline due to the use of cementitious aggregate, which is not suitable for plant growth. In addition, the soil porosity is low, the number and activity of microbial flora are low, and the nutrients provided to plants are small, resulting in poor plant growth conditions and poor stress resistance. In addition, the strength of the stabilized soil slope protection is insufficient, it is easily eroded, and its protection ability is poor. Summary of the invention

[0004] In view of this, the object of the present invention is to provide a stabilized soil vegetation slope protection base material habitat improver to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A stabilized soil vegetation slope protection base material habitat improver comprises the following components in percentage by mass: 6-15% of a main body, 21-23.2% of a fertilizer, 45.5-46% of a stabilizer, 6-6.5% of a pH value regulator, 10.2-15.3% of a nutrient, 0.6-0.8% of an auxiliary agent, and 3-3.5% of a composite microbial agent powder.

[0007] As a further solution of the present invention: the main body includes carbon particles and wood fibers, and the mass percentages of the carbon particles and the wood fibers are 0.5-5% and 5.5-10% respectively.

[0008] As a further solution of the present invention: the fertilizer includes calcium hydrogen phosphate dihydrate, potassium dihydrogen phosphate and magnesium sulfate heptahydrate, and the mass percentages are 18.5-19.2%, 2.0-2.5% and 0.5-1.5% respectively.

[0009] As a further solution of the present invention: the nutrient agent is sodium dihydrogen phosphate and humic acid, and the mass percentages of sodium dihydrogen phosphate and humic acid are 0.2-0.3% and 10-15% respectively.

[0010] As a further solution of the present invention: the stabilizer is calcium sulfate dihydrate, the pH regulator is aluminum sulfate, and the auxiliary agent is silicon dioxide.

[0011] As a further solution of the present invention: the composite microbial agent is measured by weight of powder, including Bacillus subtilis powder, Pseudomonas powder, and Trichoderma harzianum powder, and the added amount ratio is 0.65-0.75%, 0.65-0.75%, and 1.7-2% by weight.

[0012] The present invention discloses a stabilized soil vegetation slope protection base material habitat improver and a preparation method thereof, comprising the following steps:

[0013] (1) combining calcium hydrogen phosphate dihydrate, potassium dihydrogen phosphate, magnesium sulfate heptahydrate, calcium sulfate dihydrate, silicon dioxide, aluminum sulfate, carbon particles, and wood fiber according to a mass ratio, stirring and mixing them uniformly to obtain a mixture A;

[0014] (2) adding sodium dihydrogen phosphate and humic acid to the mixture A obtained in step (1), stirring evenly, to obtain a mixture B;

[0015] (3) Add Bacillus subtilis powder, Pseudomonas powder, and Trichoderma harzianum powder according to the mass ratio into 1 kg of water to prepare a suspension, spray the suspension onto the mixture B obtained in step (2), stir while spraying, stir evenly, and then pile for 8 to 12 hours to obtain a mixture C;

[0016] (4) Spread the C mixture to a thickness of less than 10 cm, dry it naturally, control the moisture content to 10% or less, and then pass it through a 2-3 mm sieve to obtain the improver material of the present invention, and finally bag it.

[0017] As a further solution of the present invention: the suspension described in step (3) is prepared by shaking and culturing at 100-200 r / min for 4 h.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The improver material of the present invention uses the main body, fertilizer, stabilizer, pH regulator, nutrient, adjuvant, and composite microbial agent powder as raw materials. After being prepared in a scientific ratio, it is applied to the stabilized soil vegetation slope protection base material, which can neutralize the alkaline pH value of the stabilized soil with natural gelling agent, cement, etc. as gelling aggregate, and create a soil acid-base environment suitable for plant growth;

[0020] 2. Adding the modifier material of the present invention can improve the soil porosity of the stabilized soil, enhance the air permeability and water permeability of the soil, and create favorable conditions for plant growth;

[0021] 3. Adding the improver material of the present invention can increase the number and activity of microbial flora in the stabilized soil and accelerate the transformation of nutrients. Active microbial flora can decompose organic matter and release nutrients that can be absorbed by plants, such as nitrogen, phosphorus, potassium, etc. At the same time, the activity of microorganisms can also promote the improvement of soil structure and enhance the soil's fertilizer retention capacity. In addition, by improving the stress resistance of vegetation, the healthy and long-term growth ability of plant communities can be improved;

[0022] 4. Adding the improver material of the present invention can enhance the strength index of the stabilized soil vegetation slope protection, and improve the anti-erosion and slope stability protection capabilities of the stabilized soil structure. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be clearly and completely described below in conjunction with 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 creative work are within the scope of protection of the present invention.

[0024] A stabilized soil vegetation slope protection base material habitat improver comprises the following components in percentage by mass: 6-15% of a main body, 21-23.2% of a fertilizer, 45.5-46% of a stabilizer, 6-6.5% of a pH value regulator, 10.2-15.3% of a nutrient, 0.6-0.8% of an auxiliary agent, and 3-3.5% of a composite microbial agent powder.

[0025] The main body comprises carbon particles and wood fibers, and the mass percentages of the carbon particles and the wood fibers are 0.5-5% and 5.5-10% respectively.

[0026] The fertilizer comprises calcium hydrogen phosphate dihydrate, potassium dihydrogen phosphate and magnesium sulfate heptahydrate, and the mass percentages thereof are 18.5-19.2%, 2.0-2.5% and 0.5-1.5% respectively.

[0027] The nutrient agent is sodium dihydrogen phosphate and humic acid, and the mass percentages of the sodium dihydrogen phosphate and the humic acid are 0.2-0.3% and 10-15% respectively.

[0028] The stabilizer is calcium sulfate dihydrate, the pH value regulator is aluminum sulfate, and the auxiliary agent is silicon dioxide.

[0029] The composite microbial agent is measured by powder weight, including Bacillus subtilis powder, Pseudomonas powder and Trichoderma harzianum powder, and the added amount ratio is 0.65-0.75%, 0.65-0.75% and 1.7-2% by weight.

[0030] Example 1

[0031] A stabilized soil vegetation slope protection substrate habitat improver of the present embodiment includes the following components in percentage by mass: 10% of a main body (2.5% of carbon particles and 7.5% of wood fiber), 22% of a fertilizer (19% of calcium hydrogen phosphate dihydrate, 2% of potassium dihydrogen phosphate and 1% of magnesium sulfate heptahydrate), 45.5% of a stabilizer (calcium sulfate dihydrate), 6.5% of a pH regulator (aluminum sulfate), 12% of a nutrient (0.3% of sodium dihydrogen phosphate and 11.7% of humic acid), 0.6% of an auxiliary agent (silicon dioxide), and 3.4% of a composite microbial agent powder (0.75% of Bacillus subtilis powder, 0.75% of Pseudomonas powder, and 1.9% of Trichoderma harzianum powder).

[0032] In this embodiment, the preparation method of the improver material suitable for the stabilized soil vegetation slope protection base material includes the following steps:

[0033] (1) combining calcium hydrogen phosphate dihydrate, potassium dihydrogen phosphate, magnesium sulfate heptahydrate, calcium sulfate dihydrate, silicon dioxide, aluminum sulfate, carbon particles, and wood fiber according to a mass ratio, stirring and mixing them uniformly to obtain a mixture A;

[0034] (2) adding sodium dihydrogen phosphate and humic acid to the mixture A obtained in step (1), stirring evenly, to obtain a mixture B;

[0035] (3) Add Bacillus subtilis powder, Pseudomonas powder, and Trichoderma harzianum powder to 1 kg of water according to the mass ratio, shake and culture at 100-200 r / min for 4 h to prepare a suspension, spray the suspension onto the mixture B obtained in step (2), stir while spraying, stir evenly, and then stack for 8-12 h to obtain a mixture C;

[0036] (4) Spread the C mixture to a thickness of less than 10 cm, air dry it naturally, control the moisture content to 10% or less, and then pass it through a 2-3 mm sieve to obtain the improver material of the present invention, and finally bag it.

[0037] Table 1 Comparison of the physical and chemical properties of the stabilized soil for slope protection using the above-mentioned improver materials and the original soil:

[0038]

[0039] Compared with the original soil, the stabilized soil vegetation slope protection soil using the modifier of Example 1 is as follows:

[0040] 1. Stabilized soil slope protection uses alkaline materials such as natural gelling agents and cement as gelling aggregates, and an alkaline environment is not conducive to plant growth. From Table 1, it can be seen that the pH value of the stabilized soil slope protection soil using the modifier of Example 1 is maintained between 7 and 9.5 for one year, and gradually tends to be neutral over time. The modifier of Example 1 can neutralize the alkalinity of the stabilized soil using natural gelling agents, cement, etc. as gelling aggregates to form a soil acid-base environment suitable for plant growth;

[0041] 2. The moisture content of the stabilized soil slope protection soil using the modifier of Example 1 is significantly higher than that of the original soil. The moisture content is maintained between 20-25.5% for one year. The moisture content in this range is conducive to seed germination and provides sufficient water for plants to meet their growth, development and metabolic needs. In addition, the activity of microorganisms in the soil is enhanced at this moisture content. These microorganisms participate in the decomposition of organic matter in the soil, nutrient circulation and transformation, and at the same time, the moisture content in this range enhances the bonding force between soil particles, thereby improving the shear strength of the soil, helping to enhance the stability of the soil and reduce the risk of slope landslides and collapses.

[0042] 3. The organic matter content of the stabilized soil for slope protection using the modifier of Example 1 is significantly lower than that of the original soil. The organic matter content is maintained between 5 and 13.5 in one year. The lower organic matter content makes the soil relatively more compact, and the adhesion between particles is enhanced, which helps to maintain the stability of the slope protection surface. In addition, the lower organic matter content can reduce the survival and reproduction of certain pathogens, and reduce the probability of plants being attacked by diseases and pests.

[0043] 4. The dissolved nitrogen of the stabilized soil slope protection soil using the modifier of Example 1 is significantly higher than that of the original soil. The dissolved nitrogen content is maintained between 60-92 in one year and shows an increasing trend over time. The higher dissolved nitrogen content can promote plant protein synthesis and the growth of plant branches, leaves and roots. The dense plant branches and leaves can better cover the slope surface, and the strong root system can better fix the soil, thereby improving the stability of the slope protection. In addition, the higher dissolved nitrogen can provide sufficient nitrogen source for microorganisms in the soil, promote the growth and reproduction of microorganisms, and at the same time, the higher dissolved nitrogen helps to promote nutrient circulation in the soil. Nitrogen interacts with other nutrient elements such as phosphorus and potassium, and jointly participates in the growth and development process of plants.

[0044] 5. The available phosphorus content of the stabilized soil for slope protection using the modifier of Example 1 is significantly higher than that of the undisturbed soil. The available phosphorus content is maintained between 160-315% in one year. The higher available phosphorus content can promote flower bud differentiation, seed formation and root growth, and the higher available phosphorus content can improve the plant's resistance to cold, drought and pests and diseases. At the same time, the available phosphorus can promote the agglomeration of soil particles, form a good soil structure, increase the porosity of the soil, and improve the air permeability and water permeability of the soil.

[0045] 6. The effective potassium content of the stabilized soil for slope protection using the modifier of Example 1 is significantly higher than that of the original soil. The effective potassium content is maintained between 280 and 960 in one year. The higher effective potassium content can enhance photosynthesis, promote protein synthesis and sugar transport, thereby promoting plant growth and improving the stability of the slope protection. Moreover, the higher effective potassium content can improve the resistance to drought, cold, diseases and pests, and the like. At the same time, the effective potassium can promote the agglomeration of soil particles, form a good soil structure, increase the porosity of the soil, and improve the air permeability and water permeability of the soil.

[0046] Table 2 Microbial alpha diversity of stabilized soil vegetated slope protection soil using the above amendment materials:

[0047]

[0048] As time goes by, the alpha diversity ACE index and the alpha diversity Chao1 index gradually increase, indicating that the microbial richness in the soil of the stabilized soil slope protection planted using Example 1 is constantly improving, the recovery and development of the soil microbial community has been promoted, and the function and stability of the ecosystem are gradually enhanced. The increase in microbial richness means that the nutrient cycle is more active, which can provide more sufficient nutrition for the plants on the slope protection and promote plant growth. At the same time, the rich microbial community can promote the aggregation of soil particles by secreting mucus and forming mycelium networks, thereby improving the erosion resistance and stability of the slope protection soil and reducing the risk of slope landslides and collapse.

[0049] Example 2

[0050] A stabilized soil vegetation slope protection substrate habitat improver of the present embodiment includes the following components in percentage by mass: 11.8% of a main body (3.5% of carbon particles and 8.3% of wood fiber), 21% of a fertilizer (18.5% of calcium hydrogen phosphate dihydrate, 2% of potassium dihydrogen phosphate and 0.5% of magnesium sulfate heptahydrate), 46% of a stabilizer, 6% of a pH regulator, 11.5% of a nutrient (0.25% of sodium dihydrogen phosphate and 11.25% of humic acid), 0.7% of an auxiliary agent, and 3% of a composite microbial agent powder (0.65% of Bacillus subtilis powder, 0.65% of Pseudomonas powder, and 1.7% of Trichoderma harzianum powder).

[0051] The preparation method of the improver material suitable for stabilized soil vegetation slope protection base material in this embodiment is the same as that in Example 1.

[0052] Table 3 Physical and chemical properties of stabilized soil for slope protection using the above-mentioned improver materials:

[0053]

[0054] From the physical and chemical properties of the stabilized soil vegetation slope protection using Example 2 from 2020 to 2023 in Table 3, it can be seen that:

[0055] 1. From 2020 to 2023, the pH value of the stabilized soil slope protection will be maintained between 6.9 and 8.66, and gradually tend to be neutral, which is more suitable for plant growth;

[0056] 2. As time goes by, the moisture content of the stabilized soil slope protection has been maintained between 19-30, providing sufficient moisture for plant growth, enhancing the activity of microorganisms in the soil, and at the same time enhancing the bonding force between soil particles, improving soil stability, and reducing the risk of slope landslides and collapses;

[0057] 3. As time goes by, the content of organic matter tends to increase gradually, especially in 2023, the data monitored showed that the content of organic matter increased to 19.5, which may be produced by the decomposition of root secretions and litter. The increase of organic matter will have a certain impact on soil stability and plant disease infection rate, but because the content of available phosphorus and available potassium has been maintained in a high range and has a trend of gradual increase, this can compensate for the impact of increased organic matter on soil stability and disease infection rate;

[0058] 4. As time goes by, the contents of total nitrogen, available phosphorus and available potassium show a trend of gradual increase, indicating that the total nitrogen, available phosphorus and available potassium in the stabilized soil slope protection of Example 2 are better accumulated and converted in the soil, so that the nutrient cycle in the ecosystem is continuously optimized. This nutrient cycle helps to maintain the stability of soil fertility and provide sufficient nutrients for plant growth. The soil with sufficient nutrients makes plants more resistant to stress and can better cope with natural disturbances and human destruction such as drought, floods, pests and diseases, and available phosphorus and available potassium can promote the aggregation of soil particles, form a good soil structure, increase the porosity of the soil, improve the air permeability and water permeability of the soil, and provide conditions for plant growth.

[0059] The improver material of the present invention is used on stabilized soil slope protection, which can neutralize the alkaline pH value of stabilized soil with natural gelling agent, cement and the like as cementing aggregate, and create a soil acid-base environment suitable for plant growth; it can improve the soil porosity of the stabilized soil and create favorable conditions for plant growth; it can increase the number and activity of microbial flora in the stabilized soil and accelerate the transformation of nutrients. The active microbial flora can decompose organic matter and release nutrients that can be absorbed by plants, such as nitrogen, phosphorus, potassium, etc. At the same time, the activity of microorganisms can also promote the improvement of soil structure and enhance the soil's fertilizer retention capacity. In addition, by improving the stress resistance of vegetation, the healthy and long-term growth capacity of plant communities can be improved; the strength index of stabilized soil slope protection can be enhanced, and the anti-erosion and slope stability protection capabilities of the stabilized soil structure can be improved.

[0060] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A stabilized soil vegetation slope protection base material habitat improver, characterized in that: The invention comprises the following components in percentage by mass: 6-15% of a main body, 21-23.2% of a fertilizer, 45.5-46% of a stabilizer, 6-6.5% of a pH value regulator, 10.2-15.3% of a nutrient, 0.6-0.8% of an auxiliary agent and 3-3.5% of a composite microbial agent powder.

2. A stabilized soil vegetation slope protection base material habitat improver according to claim 1, characterized in that: The main body comprises carbon particles and wood fibers, and the mass percentages of the carbon particles and the wood fibers are 0.5-5% and 5.5-10% respectively.

3. A stabilized soil vegetation slope protection base material habitat improver according to claim 2, characterized in that: The fertilizer comprises calcium hydrogen phosphate dihydrate, potassium dihydrogen phosphate and magnesium sulfate heptahydrate, and the mass percentages thereof are 18.5-19.2%, 2.0-2.5% and 0.5-1.5% respectively.

4. A stabilized soil vegetation slope protection base material habitat improver according to claim 3, characterized in that: The nutrient agent is sodium dihydrogen phosphate and humic acid, and the mass percentages of the sodium dihydrogen phosphate and the humic acid are 0.2-0.3% and 10-15% respectively.

5. A stabilized soil vegetation slope protection base material habitat improver according to claim 4, characterized in that: The stabilizer is calcium sulfate dihydrate, the pH value regulator is aluminum sulfate, and the auxiliary agent is silicon dioxide.

6. A stabilized soil vegetation slope protection base material habitat improver according to claim 5, characterized in that: The composite microbial agent is measured by powder weight, including Bacillus subtilis powder, Pseudomonas powder and Trichoderma harzianum powder, and the added amount ratio is 0.65-0.75%, 0.65-0.75% and 1.7-2% by weight.

7. The method for preparing a stabilized soil vegetation slope protection base material habitat improver according to any one of claims 1 to 6, characterized in that: The steps include: (1) combining calcium hydrogen phosphate dihydrate, potassium dihydrogen phosphate, magnesium sulfate heptahydrate, calcium sulfate dihydrate, silicon dioxide, aluminum sulfate, carbon particles, and wood fiber according to a mass ratio, stirring and mixing them uniformly to obtain a mixture A; (2) adding sodium dihydrogen phosphate and humic acid to the mixture A obtained in step (1), stirring evenly, to obtain a mixture B; (3) Add Bacillus subtilis powder, Pseudomonas powder, and Trichoderma harzianum powder according to the mass ratio into 1 kg of water to prepare a suspension, spray the suspension onto the mixture B obtained in step (2), stir while spraying, stir evenly, and then pile for 8 to 12 hours to obtain a mixture C; (4) Spread the C mixture to a thickness of less than 10 cm, air dry it naturally, control the moisture content to 10% or less, and then pass it through a 2-3 mm sieve to obtain the improver material of the present invention, and finally bag it.

8. The method for preparing a stabilized soil vegetation slope protection base material habitat improver according to claim 7, characterized in that: The suspension described in step (3) is prepared by shaking and culturing at 100-200 r / min for 4 hours.

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