JP6837692B1 - Hybrid turf forming tool and hybrid turf forming method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hybrid turf forming tool and a hybrid turf forming method for improving the rooting of natural turf. A hybrid turf forming tool 10 includes a fiber material 1 capable of entwining roots 5b of natural turf 5 and an artificial turf base cloth 2 stacked on the fiber material 1. It has a planting surface 2a on which the artificial turf leaves 3 are planted, and a plurality of through holes 2b through which the roots 5b of the natural turf 5 sprouted in the soil 4 piled on the planting surface 2a can pass. .. The root 5b of the natural turf 5 germinated in the soil 4 not only entangles with the artificial turf leaf 3 in the soil 4, but also reaches the fiber material 1 located below the base cloth 2 through the through hole 2b, and the fiber material 1 Entangled with. [Selection diagram] Fig. 1

Description

The present invention relates to a hybrid turf in which an artificial turf and a natural turf are combined. More specifically, the hybrid turf forming tool used for forming the hybrid turf and the hybrid turf forming tool are used to form the hybrid turf. With respect to a hybrid turf forming method for the purpose.

In recent years, hybrid turf, which is a combination of artificial turf and natural turf, is being introduced in various places such as grounds used for ball games such as soccer, parks, parking lots, and roads. For example, Patent Document 1 below discloses a technique for growing natural turf on artificial turf.

Japanese Unexamined Patent Publication No. 2015-1116

In hybrid turf, the roots of natural turf are entwined with the turf leaves (also called pile) of artificial turf, so that the rooting of natural turf (also called fixability) is improved and the durability is also improved. However, in the hybrid turf exemplified in Patent Document 1, the natural turf grows only in the soil laid in the turf, and the rooting and durability of the natural turf are insufficient depending on the place where the hybrid turf is introduced. .. As hybrid turf is introduced in various places, it is required to further improve the rooting of natural turf and further improve the durability of hybrid turf.

The present invention provides a hybrid turf forming tool and a hybrid turf forming method for improving the rooting of natural turf.

The hybrid turf forming tool according to the present invention includes a fiber material capable of entwining the roots of natural turf and an artificial turf base cloth layered on the fiber material, and the base cloth is planted with artificial turf leaves. It has a planting surface and a plurality of through holes through which the roots of natural turf sprouted in the soil piled on the planting surface can pass.

According to the hybrid turf forming tool according to the present invention, the roots of natural turf germinated in the soil not only entangle with the artificial turf leaves in the soil, but also reach the fiber material located below the base cloth through the through holes. Entangled with fiber material. This improves the rooting of natural turf.

For example, in the case of laying hybrid turf on the ground used in soccer, the ratio of artificial turf to the total turf is lowered to about 5% or less, and the ratio of natural turf is about 95% or more in consideration of playability. It has been raised. If an attempt is made to improve the rooting of natural turf by increasing the proportion of artificial turf with the aim of further improving durability, the proportion of natural turf will decrease and playability will decrease. In the case of laying hybrid grass on the ground for ball games, durability and playability are in a trade-off relationship.

For example, in the case of laying hybrid turf on a parking lot, the roof of a building, a park, etc., in consideration of durability, the ratio of artificial turf to the total turf is increased and the ratio of natural turf is decreased. The natural aesthetics and texture of natural turf are spoiled. In the case of laying hybrid grass for the purpose of greening, durability and aesthetics are in a trade-off relationship.

On the other hand, according to the hybrid turf forming tool according to the present invention, it is possible to improve the rooting of natural turf while maintaining a high ratio of natural turf to artificial turf, so that the playability in ball games does not deteriorate and it is natural. The beautiful appearance and natural texture are not impaired. That is, according to the hybrid turf forming tool according to the present invention, not only the rooting of natural turf is improved, but also durability and playability, which have conventionally been a trade-off relationship in the case of laying hybrid turf, are improved. It can be compatible, and it can be both durable and aesthetically pleasing.

In a preferred embodiment of the hybrid turf forming tool, the fibrous material is in the form of a knit or woven fabric and has a pattern consisting of a mesh through which the roots of natural turf can penetrate. In another preferred embodiment of the hybrid turf forming tool, the fibrous material is a non-woven fabric and has voids between the fibers through which the roots of natural turf can penetrate.

In a more preferred embodiment, the hybrid turf forming tool further comprises a water permeable material overlaid below the fibrous material. As a result, the roots of the natural turf that have reached the fiber material grow horizontally in the fiber material on the surface of the water-permeable material that also functions as a weed-proof sheet.

The hybrid turf forming method according to the present invention includes a preparatory step of superimposing an artificial turf base cloth on which artificial turf leaves are planted on a planting surface on a fiber material capable of entwining the roots of natural turf, and a base cloth. The base cloth includes the process of sowing the seeds of natural turf by piling the soil on the planting surface of the plant and the growing process of sprouting the seeds in the soil to grow the natural turf. It is equipped with a plurality of through holes capable of allowing the roots of natural turf to be entangled with the fiber material through the through holes in the growing process.

Preferably, the soil is piled up to 60% to 80% of the length of the artificial turf leaves. As a result, the thickness of the soil required for the growth of the natural turf is reduced as compared with the case where only the natural turf is grown on the soil.

Preferably, the soil is sprayed with silica derived from a silicon-containing plant. Thereby, the heat shielding property on the surface of the hybrid turf can be improved.

A preferred embodiment of the hybrid turf forming method further includes an installation step of installing the fiber material on the roof of a building.

According to the present invention, it is possible to provide a hybrid turf forming tool and a hybrid turf forming method for improving the rooting of natural turf.

It is a schematic cross-sectional view of the hybrid grass forming tool which concerns on one Embodiment of this invention. It is a schematic diagram of the fiber material used in the hybrid turf forming tool which concerns on one Embodiment of this invention. It is a graph which shows the measurement result of the heat-shielding performance by the hybrid grass which concerns on Example of this invention together with the comparative example.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic cross-sectional view of a hybrid turf forming tool according to an embodiment of the present invention.

The hybrid turf forming tool 10 according to the embodiment of the present invention includes a fiber material 1 capable of entwining the roots 5b of the natural turf 5 and an artificial turf base cloth 2 stacked on the fiber material 1. The cloth 2 has a plurality of through holes through which the planting surface 2a on which the artificial turf leaf 3 is planted and the root 5b of the natural turf 5 sprouted in the soil 4 on the planting surface 2a can pass. Has 2b and. Preferably, the hybrid turf forming tool 10 can further include a water permeable material 6 stacked below the fiber material 1.

The hybrid turf forming tool 10 is installed in a place where artificial turf or natural turf can be laid. Examples of installation locations include, for example, grounds, parks, gardens, golf courses, driving ranges, rooftops and slopes of buildings, and examples of installation location materials include soil (masa sand and soil). Crushed stone, etc.), asphalt, mortar, bricks and tiles, but are not limited to these.

Further, the size of the hybrid grass forming tool 10 in a plan view is not limited. The hybrid turf forming tool 10 can be unitized, and a plurality of unitized hybrid turf forming tools 10 can be laid out and installed at the above-exemplified installation locations, for example, like tiles.

The root 5b of the natural turf 5 that reaches through the through hole 2b is entangled with the fiber material 1. In the present embodiment, the fiber material 1 is in the form of a knit or woven fabric, and has a pattern formed of a mesh through which the root 5b of the natural turf 5 can penetrate. Since it is knitted or woven, the fiber material 1 has an appropriate water retention capacity. The fiber material 1 used in this embodiment will be described later with reference to FIG.

An artificial turf base cloth 2 is laminated on the fiber material 1. A plurality of artificial turf leaves 3 are planted on the planting surface 2a of the base cloth 2. The base cloth 2 is provided with a plurality of through holes 2b, and the through holes 2b are formed to have a diameter through which the roots 5b of the natural turf 5 can pass. Illustratively, the diameter of the through holes 2b is about 3 mm, and a plurality of through holes 2b are uniformly formed on the base cloth 2 at intervals of, for example, 10 mm. The artificial turf leaf 3 is planted so that the planted portion penetrates the back side of the base cloth 2 and the exposed portion protrudes to the front side of the base cloth 2. Preferably, the artificial turf leaf 3 is a long pile type made of resin, and the length of the artificial turf leaf 3 is about 50 mm to about 80 mm. Illustratively, an artificial turf manufactured by World Rug Processing Co., Ltd. is used for the base cloth 2 of the artificial turf on which the artificial turf leaves 3 are planted, but the artificial turf used is not limited to this, and various types are used. Ready-made artificial turf can be used.

Soil 4 is piled up between the plurality of artificial turf leaves 3 on the planting surface 2a. Preferably, the thickness of the soil 4 is 60% to 80% of the length of the artificial turf leaf 3. Preferably, the soil 4 is sprayed with silica derived from a silicon-containing plant.

Seed 5a of natural turf 5 is sown in soil 4, and seed 5a germinates and grows in soil 4. The root 5b of the grown natural turf 5 is entwined with the artificial turf leaf 3 in the soil 4. This improves the rooting of the natural turf 5. Further, the root 5b of the natural turf 5 germinated in the soil 4 penetrates the through hole 2b, reaches the fiber material 1 located below the base cloth 2, and is entangled with the fiber material 1. As a result, the rooting of the natural turf 5 is further improved. Preferably, the root 5b of the natural turf 5 is integrated with the fiber material 1 entwined with the fiber material 1 below the base cloth 2. Preferably, the natural turf 5 is grown longer than the artificial turf leaf 3. As a result, the playability in ball games is about the same as that of natural turf.

FIG. 2 is a schematic view of a fiber material used in the hybrid turf forming tool according to the embodiment of the present invention.

In the present embodiment, the fiber material 1 has a layered structure of the fiber material main body 1a and the three-dimensional mesh 1b provided on the surface of the fiber material main body 1a. Both the fiber material main body 1a and the three-dimensional mesh 1b are formed by knitting (or woven) yarns made of synthetic fibers. When the natural turf 5 grows, the roots 5b are entwined with the fiber material body 1a and the three-dimensional mesh 1b. Illustratively, as the fiber material 1 used in the present embodiment, a cubic eye (registered trademark) manufactured by Unitika Ltd. can be used.

FIG. 2A is a plan view of the front side of the fiber material 1. As shown in (A), the three-dimensional mesh 1b provided on the surface of the fiber material main body 1a has a honeycomb-like mesh pattern. Illustratively, the honeycomb-shaped mesh opening of the three-dimensional mesh 1b is about 5 mm to about 10 mm as indicated by the reference numeral d1 in the drawing, and is about 12 mm to about 17 mm as indicated by the reference numeral d2. The one indicated by d3 is about 7 mm to about 12 mm. The opening of the three-dimensional mesh 1b may be such that the soil 4 can flow in through the through hole 2b of the base cloth 2 and the root 5b of the natural turf 5 can penetrate.

FIG. 2B is a plan view of the back side of the fiber material 1. As shown in (B), the fiber material main body 1a has a mesh pattern. Illustratively, the mesh opening d4 of the fiber material main body 1a is about 3 mm through which the root 5b of the natural turf 5 can penetrate.

FIG. 2C is a cross-sectional view of the fiber material 1. As shown in (C), a plurality of elastic connecting threads 1d are interposed between the surface of the fiber material main body 1a and the upper surface 1c of the three-dimensional mesh 1b. The connecting thread 1d is provided so as to connect the surface of the fiber material main body 1a and the upper surface 1c of the three-dimensional mesh 1b so that the three-dimensional mesh 1b is self-supporting. The space in the three-dimensional mesh 1b partitioned by the plurality of connecting threads 1d is a concave space 1e. In the plan view, the connecting thread 1d extends downward from the upper surface 1c of the three-dimensional mesh 1b, and in the plan view, the concave space 1e has a honeycomb-like shape. Illustratively, the thickness of the three-dimensional mesh 1b is about 5 mm.

In the present embodiment, the fiber material 1 is arranged so that the three-dimensional mesh 1b faces the side of the base cloth 2. Since the three-dimensional mesh 1b is provided on the surface of the fiber material main body 1a, the soil 4 that has flowed in through the through hole 2b of the base cloth 2 is deposited on the honeycomb-shaped three-dimensional mesh 1b and in the concave space 1e. As a result, the soil 4 is supplied from the upper layer on the three-dimensional network 1b of the fiber material 1 located below the base cloth 2 and in the concave space 1e. As a result, the natural turf 5 can easily extend the root 5b in the fiber material 1, and the rooting of the natural turf 5 is further promoted.

In another embodiment, the fiber material 1 is a non-woven fabric and has gaps between fibers through which the root 5b of the natural turf 5 can penetrate. Illustratively, as the fiber material 1 used in another embodiment, felt made of synthetic fiber or natural fiber can be used.

The felt has elasticity, and the gaps between the fibers constituting the felt can be penetrated by the root 5b of the natural turf 5. When the natural turf 5 grows, the roots 5b are entangled with the felt, and the rooting of the natural turf 5 is further promoted. The voids between the fibers constituting the felt do not have to be as dense as the microfibers, and are preferably low in density so that the rooting of the natural turf 5 is not hindered. Since it is felt, the fiber material 1 has an appropriate water retention capacity.

The water permeable material 6 is made of a flexible woven fabric or non-woven fabric, and has water permeability and breathability. Since the water permeable material 6 has water permeability and breathability, it functions as a water permeable sheet that allows moisture such as rain and snow to permeate the ground and prevent the occurrence of water pools. Preferably, the water permeable material 6 further has a light-shielding property and a pressure-resistant property. The water permeable material 6 also functions as a weed-proof sheet that prevents the growth of weeds growing on the ground such as decomposed granite soil by having a light-shielding property and a pressure-resistant property. Illustratively, a polyester long-fiber non-woven fabric (manufacturer: Toray Industries, Inc., product name: Toray Axter (registered trademark), mantle (registered trademark)) can be used as the water permeable material 6. The water permeable material 6 using the long fiber non-woven fabric made of polyester functions as a water permeable sheet and a weed proof sheet.

A hybrid grass forming method according to an embodiment of the present invention will be described with reference to FIG.

First, as a preparatory step, the base cloth 2 of the artificial turf on which the artificial turf leaves 3 are planted is overlaid on the fiber material 1 to which the roots 5b of the natural turf 5 can be entangled. The base cloth 2 is provided with a plurality of through holes 2b through which the roots 5b of the natural turf 5 can pass. The preparatory step can also be performed after installing the water permeable material 6 on the laying surface of the hybrid turf. In this case, the fiber material 1 is superposed on the water permeable material 6 before the preparatory step is performed.

Next, as a sowing step, the soil 4 is piled up on the planting surface 2a of the base cloth 2 and the seed 5a of the natural turf 5 is sown. As shown in FIG. 1, the soil 4 is piled up so as to embed the root of the artificial turf leaf 3 between the plurality of artificial turf leaves 3 on the planting surface 2a. Preferably, the soil 4 is piled up to 60-80% of the length of the artificial turf leaf 3. In this embodiment, wild turf seeds are sown in soil 4.

Finally, as a growing step, the seed 5a is germinated in the soil 4 to grow the natural turf 5, and the root 5b of the natural turf 5 is entwined with the fiber material 1 through the through hole 2b. The root 5b of the grown natural turf 5 is entwined with the artificial turf leaf 3 in the soil 4. This improves the rooting of the natural turf 5. Further, the root 5b of the grown natural turf 5 reaches the fiber material 1 located below the base cloth 2 through the through hole 2b and is entangled with the fiber material 1. As a result, the rooting of the natural turf 5 is further improved. Preferably, the natural turf 5 is grown below the base cloth 2 until the roots 5b are entangled with the fiber material 1 and integrated with the fiber material 1. Preferably, the natural turf 5 is grown longer than the artificial turf leaf 3. As a result, the playability in ball games can be maintained at the same level as that of natural turf. When the water permeable material 6 is stacked below the fiber material 1, the root 5b of the natural turf 5 that has reached the fiber material 1 is horizontal inside the fiber material 1 on the surface of the water permeable material 6 that also functions as a weed control sheet. It grows like crawling in the direction.

Preferably, after growing the natural turf 5, silica derived from a silicon-containing plant (also called rice husk silica) can be sprayed on the soil 4. Thereby, the heat shielding property on the surface of the hybrid turf can be improved. The silicon-containing plant means rice husks, and the silica derived from the silicon-containing plant means ash produced by burning rice husks. Silica means a substance composed of silicon dioxide. Rice husk silica is known to have heat insulating properties because it is an amorphous porous material having a plant structure and contains a large amount of air. Silica derived from a silicon-containing plant may be sprayed on the soil 4 as a powder, or the powder may be mixed with water and sprayed on the soil 4.

As described above, according to the present invention, it is possible to provide a hybrid turf forming tool and a hybrid turf forming method for improving the rooting of natural turf. According to the present invention, the root 5b of the natural turf 5 germinated in the soil 4 not only entangles with the artificial turf leaf 3 in the soil 4, but also reaches the fiber material 1 located below the base cloth 2 through the through hole 2b. Then, it gets entangled with the fiber material 1. This improves the rooting of the natural turf 5.

According to the present invention, it is possible to improve the rooting of the natural turf 5 while maintaining a high ratio of the natural turf 5 to the artificial turf leaf 3, so that the playability in ball games does not decrease, and the natural aesthetics and texture are not deteriorated. Is not impaired. That is, according to the present invention, it is possible not only to improve the rooting of the natural turf 5 but also to achieve both durability and playability, which have been a trade-off relationship in the case of laying the hybrid turf. However, it is possible to achieve both durability and aesthetics.

Further, conventionally, when natural turf is laid directly on the ground, the thickness of the soil is usually about 150 mm, but according to the present invention, for example, a long pile type artificial turf leaf having a length of about 65 mm. When 3 is used, the thickness of the soil 4 may be about 50 mm. In this case, the thickness of the soil 4 is about 77% of that of the artificial turf leaf 3. According to the present invention, it is possible to reduce the thickness of the soil 4 required for the growth of the natural turf 5, and even in the case where the hybrid turf is laid on the roof of a building for the purpose of greening, it hangs on the roof. The burden of weight can be reduced.

Further, on the rooftop of a building or the like, the laying surface as a base is often mortar instead of soil, but according to the present invention, hybrid grass can be laid on such a hard mortar. By using the water permeable material 6 in layers below the fiber material 1, the root 5b of the natural turf 5 that has reached the fiber material 1 grows horizontally in the fiber material 1 on the surface of the water permeable material 6. This improves the rooting of the natural turf 5. The fiber material 1 also improves shock absorption.

Further, in a conventional golf driving range, artificial turf is often laid on the target green, but according to the present invention, the introduction of hybrid turf on the target green is promoted. In the practice of approach shots of golf, the degree of backspin applied to the ball differs between artificial turf and natural turf, which causes a difference in the feeling of the practice field and this course for the player. According to the present invention, by laying hybrid grass on the target green, it is possible to practice approach shots with a feeling close to that of natural grass.
[Other forms]

Although the present invention has been described above by the specific embodiment, the present invention is not limited to the above-described embodiment.

The fiber material 1 may be installed in advance on the final installation surface, or may be installed on a site different from the final installation surface. For example, a hybrid turf forming tool 10 in which a series of steps from a preparation step to a growing step is performed on a site different from the final installation surface, for example, a horticultural site, and a series of steps up to the growing step are performed. May be installed on the final installation surface, for example, on a ball game ground or on the roof of a building. That is, the fiber material 1 may be temporarily installed on a site different from the final installation surface, and a series of steps from the preparation step to the growth step may be performed. In this case, as an installation step, a step of installing the fiber material 1 on the final installation surface can be further performed.

The fiber material 1 may be in the form of a knitted fabric, a woven fabric, or a non-woven fabric as described in the above-described embodiment, as long as the roots 5b of the natural turf 5 can be entangled with each other. Illustratively, the product name "Fairway Turf Solid" manufactured by Iris Ohyama Co., Ltd. can be used for the knitted or woven fiber material 1. The illustrated fairway turf solid and cubic eye are sheet-like rugs laid for collecting balls in a driving range.

The fiber material 1 may be made of synthetic fiber or natural fiber. Similarly, the fiber material main body 1a and the three-dimensional mesh 1b may be made of natural fibers, and threads made of natural fibers may be knitted into a knitted shape (or a woven fabric shape).

The mesh pattern of the three-dimensional mesh 1b is not limited to the honeycomb shape (hexagonal shape), and may have various shapes. The mesh pattern of the three-dimensional mesh 1b may be, for example, a triangular shape or a polygonal shape. The mesh pattern is not limited to a pattern having regularity, and may be a random pattern having no regularity in which various shapes are irregularly combined.

The planted portion of the artificial turf leaf 3 penetrating the back side of the base cloth 2 may be fixed by providing, for example, a resin layer from the back side of the base cloth 2. The through hole 2b may be formed so as to penetrate such a resin layer.

The artificial turf leaf 3 is not limited to the resin containing polypropylene, polyethylene, nylon and the like, and may be made of, for example, pulp.

The seed 5a of the natural turf 5 to be sown in the soil 4 is not limited to wild turf, and may be, for example, Japanese turf containing Koryo turf or Western turf containing, for example, Kentucky bluegrass. Further, these Japanese turf and Western turf may be mixedly sown.

In order to verify whether it is possible to lay hybrid turf on the roof of a building to mitigate the temperature rise of the building, the heat shield of the hybrid turf formed by using the hybrid turf forming tool of the present invention. , A comparative test with artificial turf was conducted.

In Example 1 and Example 2, the hybrid turf was laid using the configuration of the hybrid turf forming tool 10 shown in FIG. The product name "Axter" manufactured by Toray Industries, Inc. was used for the water permeable material 6, and the water permeable material 6 was installed on decomposed granite soil. As the fiber material 1, the product name "cubic eye" manufactured by Unitika Ltd. was used, and the fiber material 1 was superposed on the water permeable material 6. As the artificial turf leaf 3, a pile length of 65 mm was used, and soil 4 was piled up to a thickness of 50 mm. Decomposed granite soil was used for soil 4. The natural turf 5 grew wild turf in Example 1 and Western turf in Example 2. The natural turf 5 was grown to a length similar to that of the artificial turf leaf 3.

In Comparative Examples 1 to 3, artificial turf was laid. In the comparative example, various rubber chips with heat-shielding measures were used as the filler to be filled in the turf of the artificial turf. In Comparative Example 1, a general mixture of rubber chips and silica sand was used, in Comparative Example 2, a mixture of the product name “Coolfill” and silica sand was used, and in Comparative Example 3, a mixture of heat shield rubber chips and silica sand was used.

Light from a 250 watt infrared lamp was irradiated 60 cm away from the surface of the hybrid turf or artificial turf, and the temperature rise on the surface of the hybrid turf or artificial turf was measured for 60 minutes. For the temperature of the hybrid turf or artificial turf, the temperature of the central portion of the surface of the hybrid turf or artificial turf was measured using a laser thermometer. The measurement results are shown in the graph of FIG.

In the artificial turf filled with the general rubber chips shown in Comparative Example 1, the surface temperature exceeded 50 ° C. In the artificial turf of Comparative Example 2 and Comparative Example 3 in which the rubber chips were heat-shielded, the surface temperature was lower than 50 ° C., but it exceeded 40 ° C. in both Comparative Example 2 and Comparative Example 3. It was.

On the other hand, in both the hybrid turf of Example 1 and Example 2, the surface temperature was lower than 40 ° C. As a result, according to the hybrid turf shown in Example 1 and Example 2, it was confirmed that the heat shielding property was improved as compared with the artificial turf.

1 Fiber material 1a Fiber material body 1b Three-dimensional mesh 1c Upper surface of three-dimensional mesh 1d Connecting thread 1e Concave space 2 Base cloth 2a Planting surface 2b Through hole 3 Artificial turf leaf 4 Soil 5 Natural turf 5a Natural turf seed 5b Natural turf Root 6 Water permeable material 10 Hybrid turf forming tool

Claims (5)

It is provided with a fiber material capable of entwining the roots of natural turf, an artificial turf base cloth layered on the fiber material, and a water permeable material layered below the fiber material .
The base cloth has a planting surface on which artificial turf leaves are planted, and a plurality of through holes through which roots of natural turf germinated in the soil piled on the planting surface can pass. ,
The fiber material is in the form of a knit or woven fabric, has a pattern composed of a three-dimensional mesh through which the roots of the natural turf can penetrate, and the soil flows into the opening of the three-dimensional mesh through the through holes. Hybrid turf forming tool. A preparatory process for overlaying the base cloth of artificial turf with artificial turf leaves planted on the planting surface on a fiber material that can be entwined with the roots of natural turf.
The sowing process of piling soil on the planting surface of the base cloth and sowing natural grass seeds,
A growth process in which the seeds are germinated in the soil to grow natural turf,
Including
The base fabric has a plurality of through holes through which the roots of natural turf can pass.
The fiber material is knitted or woven and has a pattern composed of a three-dimensional mesh through which the roots of the natural turf can penetrate, and the soil can flow into the opening of the three-dimensional mesh through the through holes. And
A method for forming a hybrid turf, in which the roots of natural turf are entwined with the fiber material through the through holes in the growing step. The hybrid turf forming method according to claim 2 , wherein the soil is piled up to 60% to 80% of the length of the artificial turf leaf. The hybrid turf forming method according to claim 2 or 3 , wherein silica derived from a silicon-containing plant is sprayed on the soil. The hybrid grass forming method according to any one of claims 2 to 4 , further comprising an installation step of installing the fiber material on the roof of a building.

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