Ecological planting pool that prevents plants from damaging surrounding structural layers during growth

Abstract

The present invention relates to an ecological planting pool for preventing damage to the surrounding structural layer during plant growth. The ecological planting pool is arranged in a sidewalk paving area for planting street trees. The ecological planting pool comprises a sidewalk paving area (9), a curbstone (8) above the ground, and a planting hole. The planting hole contains street trees (1) with soil balls (2) and organic planting soil (3). The lower layer of the organic planting soil (3) is paved with organic fertilizer (4) and is placed on a non-woven geotextile (5). A degradable material layer (6) is placed under the non-woven geotextile (5), and the lowest layer is paved with organic planting soil (3). Compared with the prior art, the present invention reduces the damage to the sidewalk paving material and the damage to the surrounding pedestrian road surface during the growth of street trees, and can prevent the influence of the street trees on the surrounding road structure layer during the growth of street trees.

Description

Technical Field

[0001] The invention belongs to the field of ecological planting, and in particular relates to an ecological planting system for preventing damage to surrounding structural layers during plant growth, and is used to solve the problem of sidewalk ground bulging caused by street trees after a certain growth period. Background Art

[0002] In the construction of modern garden cities, people have created various forms of street tree pools, and there are certain planting techniques. The forms and styles of street tree pools have been constantly updated and changed, but the planting techniques of street trees have not changed accordingly.

[0003] The traditional street tree planting technology is not much different from the planting technology of other trees. As the trees continue to grow, they become taller and taller, and the dense shade brings coolness to pedestrians. The branches and leaves have made great contributions to reducing urban dust, noise pollution, and preventing the invasion of haze. However, its increasingly strong root structure grows towards the ground because the soil structure around the planting hole becomes increasingly dense. As a result, the sidewalk paving materials are severely damaged and the ground is raised, which brings many inconveniences to pedestrians.

[0004] In order to change the inconvenience caused by the ground bulge to pedestrians, the urban greening service department can only choose to cut off the roots of the plants protruding from the ground and replace the damaged paving materials with new ones. This makes it easier for pedestrians to pass, but it has a great impact on the growth of plants in the later period; the updated paving materials also consume a lot of manpower and financial resources of the government departments. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and to provide an ecological planting pool for solving the problem of sidewalk ground bulging caused by street trees after a certain growth period and preventing damage to the surrounding structural layer during the growth of plants.

[0006] The objective of the present invention can be achieved through the following technical scheme: an ecological planting pool that prevents damage to the surrounding structural layer during plant growth, the ecological planting pool being arranged in a sidewalk paving area for planting street trees, the ecological planting pool comprising a sidewalk paving area, curbstones above the ground and planting holes, the planting holes containing street trees with soil balls and organic planting soil, characterized in that organic fertilizer is laid on the lower layer of the organic planting soil, which is placed on a non-woven geotextile, a degradable material layer is placed under the non-woven geotextile, and the bottom layer is laid with organic planting soil.

[0007] The plant species and soil ball size of the street trees used can be determined according to the design requirements.

[0008] The degradable material layer is made of polylactic acid (PLA), also known as polylactide, which is chemically synthesized from lactic acid, a product of microbial fermentation, and can be automatically degraded after use without polluting the environment. The recycled waste of products made of polylactic acid can also be considered. When used, it must be strictly scientifically managed and must not cause pollution to the soil, groundwater, etc. Otherwise, once the soil is diseased, it will directly affect the normal growth of plants. More suitable degradable materials can also be selected according to the update of materials.

[0009] The thickness of the degradable material layer is 50 to 100 cm, and it is formed by cutting into 3 to 5 cm sizes and stacking them. Different thicknesses can be set according to the specifications of the street trees and the differences in the surrounding environment to ensure that the degradation rate is consistent with the plant growth cycle. As the degradable material layer continues to degrade, the street trees will also grow and sink downward, thereby solving the problem of sidewalk ground bulges caused by street trees after a certain number of years of growth.

[0010] The main component of the organic planting soil is pure natural organic fertilizer earthworm manure as the matrix, and is refined by adding high-quality peat soil, coconut husk, perlite and river sand. The amount of each component in the organic planting soil is calculated by weight: 6-10 parts of matrix, 40-50 parts of peat soil, 10-20 parts of coconut husk, 10-20 parts of perlite, and 10-20 parts of river sand. It has good drainage, air permeability and water and fertilizer retention capabilities. The composite filter layer includes slag, activated carbon, volcanic rock and fine sand from top to bottom.

[0011] The thickness of the upper organic planting soil is 100 to 300 cm, and the thickness of the lower organic planting soil is 50 to 100 cm.

[0012] The thickness of the organic fertilizer is 10 to 50 cm. Organic fertilizer mainly comes from plants or animals, and is a carbon-containing material applied to the soil to provide plant nutrition as its main function, including: a variety of organic acids, peptides, and rich nutrient elements including nitrogen, phosphorus, and potassium.

[0013] The equivalent pore size of the non-woven geotextile is 0.07-0.2 mm, the vertical permeability coefficient is 1.0-9.9 cm / s, and the tear strength is ≥ 0.08-0.60 kN. It is a water-permeable geosynthetic material made of synthetic fibers through needle punching or weaving. The addition of non-woven geotextile is mainly to prevent the organic planting soil and organic fertilizer layer of the conventional planting technology layer from being lost to the degradable material layer during the water infiltration process, resulting in the lack of nutrients for plant growth.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] (1) The planting technology of the present invention can solve the problem of damage to the sidewalk and the surrounding structural layer during the growth of street trees.

[0016] (2) The planting technology of the present invention can reduce the government's renewal of sidewalks and reduce the multiple consumption of manpower, material resources and financial resources.

[0017] (3) The planting technology of the present invention can provide better growth space for street trees, increase the survival rate of street trees, and ensure that the normal growth process of trees is not damaged.

[0018] (4) The application of degradable materials in the planting technology of the present invention is an innovation. The growth of street trees is natural and orderly as the degradable materials degrade, and the natural law of tree growth is met through human intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the ecological planting pool of the present invention.

[0020] In the figure, 1 is a street tree, 2 is a soil ball, 3 is an organic planting soil, 4 is an organic fertilizer layer, 5 is a non-woven geotextile layer, 6 is a degradable material layer, 7 is the existing soil, 8 is a curbstone, and 9 is a sidewalk surface layer. DETAILED DESCRIPTION

[0021] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1

[0023] like Figure 1 As shown, an ecological planting pool for preventing plants from damaging surrounding structural layers during their growth is set in the sidewalk paving area for planting street trees, including a sidewalk paving area 9 with curbstones 8 above the ground and planting holes, with street trees 1 with soil balls 2 and organic planting soil 3 built in, the lower layer is paved with organic fertilizer 4, which is placed on a non-woven geotextile 5, a degradable material layer 6 is placed under the non-woven geotextile 5, the bottom layer is paved with organic planting soil 3, and the outer periphery of the planting hole is the existing soil 7.

[0024] Conventional street tree planting technology includes street trees 1 with soil balls 2, organic planting soil layer 3, and organic fertilizer layer 4 from top to bottom; the thickness of organic fertilizer 4 is 10 to 50 cm. Organic fertilizer mainly comes from plants or animals, and is a carbon-containing material applied to the soil to provide plant nutrition as its main function, including: a variety of organic acids, peptides, and rich nutrient elements including nitrogen, phosphorus, and potassium.

[0025] The ecological planting technology used to solve the problem of roadside trees causing the uplift of pedestrian ground after a certain number of years of growth has added a non-woven geotextile layer 5, a degradable material layer 6 and an organic planting soil layer 3. The addition of the non-woven geotextile is mainly to prevent the organic planting soil 3 and the organic fertilizer layer 4 of the conventional planting technology layer from being lost to the degradable material layer 6 during the water infiltration process, resulting in the lack of nutrients for plant growth. Therefore, a non-woven geotextile 5 with an equivalent pore size of 0.07-0.2mm, a vertical permeability coefficient of 1.0-9.9cm / s, and a tear strength of ≥0.08-0.60kN is selected; the degradable material layer 6 uses polylactic acid PLA, also known as polylactide, which is chemically synthesized using lactic acid, a product of microbial fermentation, as a monomer. It can be automatically degraded after use and will not pollute the environment. Polylactic acid can be hydrolyzed into lactic acid and acetic acid in the body, and metabolized into CO2 and H2O by enzymes, and cut into 3-5cm pieces for stacking. Different thicknesses can be set according to the specifications of street trees and differences in the surrounding environment such as temperature and humidity to ensure that the degradation rate is consistent with the plant growth cycle. As the degradable material layer continues to degrade, the street trees will also grow and sink downward, thereby solving the problem of sidewalk ground uplift caused by street trees after a certain number of years of growth.

[0026] The organic planting soil layer 3 laid at the bottom can meet the nutrients required by the roots of plants that continue to grow downward after the degradable material layer is completely degraded.

[0027] The degradable material layer 6 is directly laid underground, and can be set to different thicknesses according to the specifications of the street trees and the surrounding environment such as temperature, humidity, etc., to ensure that the degradation speed is consistent with the plant growth cycle.

[0028] In order to ensure that the growth state of plants is stable and healthy for a long time, PLA cannot be replaced by degradable garbage. Degradable garbage refers to organic garbage that can be naturally decomposed, including paper, wood, plants, food, feces, fertilizer, etc. Under the action of microorganisms, bacteria, molds, and algae, biochemical reactions occur, causing changes in various aspects such as appearance mildew and internal quality changes, and finally forming compounds in common forms in nature such as carbon dioxide and water. However, degradability is not necessarily equivalent to the most environmentally friendly, because if degradable garbage is not scientifically managed, it may cause pollution to soil, groundwater, etc. Once the soil is diseased, it will directly affect the normal growth of plants. In contrast, PLA is a new type of bio-based and renewable biodegradable material, made from starch raw materials extracted from renewable plant resources such as cereal husks, straw, and wheat straw. The starch raw material is saccharified to obtain glucose, and then the glucose and certain strains are fermented to produce high-purity lactic acid, and then a certain molecular weight of PLA is synthesized by chemical synthesis. It has good biodegradability and can be completely degraded by microorganisms in nature under specific conditions after use, eventually generating carbon dioxide and water without polluting the environment. This is very beneficial to environmental protection and is a recognized environmentally friendly material.

[0029] Example 2

[0030] The thickness of the upper organic planting soil 3 is 100cm, and the thickness of the lower organic planting soil 3 is 50cm. The main component of the organic planting soil 3 is pure natural organic fertilizer earthworm castings as a matrix, and is refined by adding high-quality peat soil, coconut husk, perlite, and river sand. The amount of each component in the organic planting soil 3 is calculated by weight: 6 parts of matrix, 50 parts of peat soil, 10 parts of coconut husk, 10 parts of perlite, and 20 parts of river sand. It has good drainage, air permeability, and water and fertilizer retention capabilities. The composite filter layer includes slag, activated carbon, volcanic rock, and fine sand from top to bottom.

[0031] The thickness of the organic fertilizer 4 is 50 cm. The equivalent pore size of the non-woven geotextile 5 is 0.2 mm, the vertical permeability coefficient is 9.9 cm / s, and the tear strength is ≥ 0.08 kN. The thickness of the degradable material layer 6 is 100 cm, and the rest is the same as in Example 1.

[0032] Example 3

[0033] The thickness of the upper organic planting soil 3 is 100-300cm, and the thickness of the lower organic planting soil 3 is 100cm. The main component of the organic planting soil 3 is pure natural organic fertilizer earthworm castings as a matrix, and is refined by adding high-quality peat soil, coconut husk, perlite, and river sand. The amount of each component in the organic planting soil 3 is calculated by weight: 10 parts of matrix, 40 parts of peat soil, 20 parts of coconut husk, 20 parts of perlite, and 10 parts of river sand. It has good drainage, air permeability, and water and fertilizer retention capabilities. The composite filter layer includes slag, activated carbon, volcanic rock, and fine sand from top to bottom.

[0034] The thickness of the organic fertilizer 4 is 10 cm. The equivalent pore size of the non-woven geotextile 5 is 0.07 mm, the vertical permeability coefficient is 1.0 cm / s, and the tear strength is ≥ 0.60 kN. The thickness of the degradable material layer 6 is 50 cm, and the rest is the same as in Example 1.

Claims

1. An ecological planting pool for preventing damage to surrounding structural layers during plant growth, the ecological planting pool being arranged in a sidewalk paving area for planting roadside trees, the ecological planting pool comprising a sidewalk paving area (9), a curbstone (8) above the ground, and a planting hole, wherein a roadside tree (1) with a soil ball (2) and organic planting soil (3) are placed in the planting hole, characterized in that: The organic fertilizer (4) is laid on the lower layer of the organic planting soil (3) and placed on the non-woven geotextile (5); the degradable material layer (6) is placed under the non-woven geotextile (5); and the organic planting soil (3) is laid on the lowermost layer; The degradable material layer (6) is made of polylactic acid (PLA), also known as polylactide, which is chemically synthesized using lactic acid, a product of microbial fermentation, as a monomer; The thickness of the degradable material layer (6) is 50-100 cm, and it is formed by cutting recycled degradable materials into pieces of 3-5 cm in size and stacking them.

2. The ecological planting pool for preventing damage to the surrounding structural layer during plant growth according to claim 1, characterized in that: The main component of the organic planting soil (3) is pure natural organic fertilizer earthworm castings as a matrix, and is refined by adding high-quality peat soil, coconut bran, perlite and river sand.

3. The ecological planting pool for preventing damage to the surrounding structural layer during plant growth according to claim 2, characterized in that: The amounts of the components in the organic planting soil (3) are as follows: 6-10 parts of substrate, 40-50 parts of peat soil, 10-20 parts of coconut bran, 10-20 parts of perlite and 10-20 parts of river sand.

4. The ecological planting pool for preventing damage to the surrounding structural layer during plant growth according to claim 1, characterized in that: The thickness of the upper organic planting soil (3) is 100 to 300 cm, and the thickness of the lower organic planting soil (3) is 50 to 100 cm.

5. The ecological planting pool for preventing damage to the surrounding structural layer during plant growth according to claim 1, characterized in that: The thickness of the organic fertilizer (4) is 10 to 50 cm.

6. The ecological planting pool for preventing damage to the surrounding structural layer during plant growth according to claim 1, characterized in that: The non-woven geotextile (5) has an equivalent pore size of 0.07-0.2 mm, a vertical permeability coefficient of 1.0-9.9 cm / s, and a tear strength of ≥0.08-0.60 kN.

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