JP2012223159A - Greening board and greening system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a greening board reducing a load to the environment in discarding it, and to facilitate its construction efficiency.SOLUTION: The greening board 5 comprises a water-retaining board 13 composed of a woody fiber plate 19 with a water-retaining property, and a porous sheet 28 having a plurality of holes, and disposed on the surface of the water retaining board 13. Seeds which growth to plants 10, are kept on the water retaining board 13 by the porous sheet 28.

Description

  The present invention relates to a greening board on which plants are grown and a greening system including the same.

In recent years, a greening board for growing plants and a greening system including the same have attracted attention as means for improving the environment such as CO ₂ absorption and energy saving. The greening system is installed, for example, on the roof of a building, and it is desired to reduce the weight in order to reduce the load applied to the installation site.

  Therefore, a water retention board in which resin fibers such as nonwoven fabric and felt are molded into a mat shape has been proposed, and an attempt has been made to replace a part of soil with a light water retention board. A plant such as a lawn is grown on the soil layer placed on the water retention board.

However, since the water retention board is made of resin fiber, there is a problem that a large amount of CO ₂ is discharged when the water retention board itself is discarded. Furthermore, since the roots of lawn and the like enter the above water retention board, for example, when replacing a part of the lawn with another plant, the lawn is removed together with the water retention board, and the other with the new water retention board. Need to install plants. The water retention board in which the roots of the lawn have entered must be landfilled as industrial waste, which is problematic from the viewpoint of environmental considerations.

  Moreover, since the said water retention board is comprised with the resin fiber, although it is excellent in water retention, it also has the problem of hold | maintaining a water | moisture content unnecessarily. For example, when a large amount of water is supplied to the water retention board due to rain or the like, a state like a puddle continues for a long period of time.

  On the other hand, it has also been proposed to hold a large amount of water supplied inside by a water retention plate containing a water-absorbing polymer. Although this water retention plate can suppress the transpiration of the retained water, it cannot be said that the water retained in the water-absorbing polymer can be directly used by the plant.

  On the other hand, Patent Document 1 proposes a water retention material for plant cultivation in which a surfactant is added to the whole wood fiber board to improve water retention. According to this water retaining material, the moisture retained by the plant can be used directly. Then, the greening system was constructed by placing a thin-layer-based plant having a part consisting of roots and soil and a part consisting of stems and leaves on the surface of the water retention material.

JP 2009-183177 A

  However, in the greening system of the above-mentioned Patent Document 1, a plurality of water-retaining materials are obtained after a thin-layer-based plant is placed on the surface of a plurality of water-retaining materials in advance and the roots of the thin-layer-based plant are settled on the water-retaining material. Since it is necessary to further install a thin-layered plant on the water retaining material after installing a plurality of water retaining materials on the site, there is a problem that it takes a lot of work.

  The present invention has been made in view of such a point, and the object of the present invention is to reduce the environmental burden when discarding a greening board on which plants are grown, and to reduce the weight thereof. It is to greatly improve the workability.

  In order to achieve the above object, in the present invention, plant seeds are held on the water retention board by a perforated sheet provided on the surface of the water retention board.

  Specifically, the first invention is directed to a greening board on which plants are grown. And it is equipped with the water retention board which consists of a wood fiber board which has water retention, and the perforated sheet which is provided in the surface of a water retention board and has a some hole, and the seed used as a plant is hold | maintained on a water retention board by a perforated sheet Has been.

  In this 1st invention, the seed which absorbed the water supplied from the surface side of the perforated sheet or the water retained by the water retention board sprouts out from the hole of the perforated sheet and is bred as a plant. . Here, since the water retention board is made of wood fiber board, even if the root of the plant is entangled with the water retention board, it becomes possible to burn the water retention board together with the plant root and dispose of it. Is easily reduced.

  In addition, although the water retention board made of wood fiber material is lightweight, its surface is hard, so it is difficult to embed seeds like soil, but in the present invention, the seeds are placed on the water retention board with a perforated sheet. It can hold suitably. In addition, the root of the thin-layered base plant is pre-established on the surface of the water retention board before construction on the site, or the thin-layer basement plant is placed on the surface of the water retention board after installing the water retention board on the site Is no longer necessary. Therefore, since the greening board has a lightweight configuration, it is not necessary to install a thin-layered plant or the like, so that the workability can be greatly improved.

  According to a second aspect of the present invention, in the greening board according to the first aspect of the present invention, plant seeds are sown in a perforated sheet.

  In this 2nd invention, it becomes possible to hold | maintain the seed of a plant on a water retention board appropriately with a perforated sheet.

  3rd invention is the greening board which concerns on the said 1st or 2nd invention, The several hole part or several groove part is formed in the perforated sheet | seat side surface in a water retention board.

  In this 3rd invention, since the several hole part or several groove part is formed in the surface of a water retention board, it becomes possible to make the root of the plant which germinated from the seed | plant easily entrapped in the hole part or groove part. .

  4th invention is the greening board which concerns on the said 3rd invention, The fertilizer is provided in the several hole part or several groove part.

  In the fourth aspect of the invention, since the fertilizer is provided in the plurality of holes or the plurality of grooves where the roots of the plant can be established, it is possible to appropriately feed the plant and promote its growth.

  5th invention is the greening board which concerns on any one of the said 1st thru | or 4th invention, The connection member for fixing a some water retention board mutually is provided in the opposite side to the perforated sheet | seat in a water retention board. Is provided.

  In the fifth aspect of the invention, the plurality of water retention boards are fixed to each other by the connecting member, thereby preventing the displacement of the greening boards.

  The sixth invention is directed to a greening system including a plurality of greening boards on which plants are grown. The greening board includes a water retention board made of a wood fiber board having water retention, and a perforated sheet provided on the surface of the water retention board and having a plurality of holes, and the plant species is retained by the perforated sheet. Is held on.

  In this 6th invention, the seed | species which absorbed the water currently hold | maintained at the water retention board will sprout from the hole of a perforated sheet, and will be grown as a plant. And since a water retention board consists of a wood fiber board, the load to the environment at the time of disposal is reduced easily. Moreover, since the greening board is light in weight, it is not necessary to install a thin-layered plant or the like, so that the workability can be greatly improved.

  A seventh invention is the greening system according to the sixth invention, wherein the plurality of greening boards each have a connecting member provided on the opposite side of the perforated sheet in the water retention board, and are connected to each other by the connecting member. Yes.

  In the seventh aspect of the invention, since the plurality of greening boards are connected to each other by the connecting member, the displacement of the greening boards in the greening system is prevented.

  According to 1st and 6th invention, since the water retention board consists of a wood fiber board by hold | maintaining the seed of a plant on a water retention board by the perforated sheet | seat provided in the surface of the water retention board, to the environment at the time of disposal In addition, since the installation of a thin-layered base plant or the like is not required while the greening board has a lightweight configuration, the workability can be greatly improved.

  According to 2nd invention, the seed of a plant can be appropriately hold | maintained on a water retention board with a perforated sheet.

  According to 3rd invention, since the several hole part or the several groove part is formed in the surface of a water retention board, the root of the plant germinated from the seed | species can be easily entrapped in the hole part or the groove part.

  According to the fourth invention, since the fertilizer is provided in the plurality of holes or the plurality of grooves where the root of the plant can be established, it is possible to favorably nourish the plant and promote its growth.

  According to the fifth and seventh inventions, the plurality of water retention boards are fixed to each other by the connecting member, so that the displacement of the greening boards can be prevented.

FIG. 1 is a perspective view showing a state where the lawn of the greening board in the first embodiment is grown. FIG. 2 is a perspective view showing a state before the green board lawn in Embodiment 1 is grown. FIG. 3 is a perspective view showing the water retention board and the connecting member before mounting the perforated sheet. FIG. 4 is a plan view showing the back surface of the water retention board. FIG. 5 is a perspective view showing a connecting member. FIG. 6 is a front view showing the appearance of the greening board. FIG. 7 is a cross-sectional view showing the structure of the greening system in the first embodiment. FIG. 8 is a plan view showing the arrangement of the greening board. FIG. 9 is a cross-sectional view showing the structure of the water retention board. FIG. 10 is a cross-sectional view showing the structure of the water retention board. FIG. 11 is a cross-sectional view illustrating the structure of the greening system according to the second embodiment. FIG. 12 is a perspective view showing a water retention board and a connecting member according to a modification.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following embodiment. Moreover, each drawing does not correspond to an accurate dimension, but is schematically described so that the present invention can be easily understood.

Embodiment 1 of the Invention
1 to 10 show Embodiment 1 of the present invention.

  FIG. 1 is a perspective view showing a state where the lawn of the greening board 5 in the first embodiment is grown. FIG. 2 is a perspective view showing a state before the lawn of the greening board 5 in the first embodiment is grown. FIG. 3 is a perspective view showing the water retention board 13 and the connecting member 40 before the perforated sheet 28 is attached.

  FIG. 4 is a plan view showing the back surface of the water retention board 13. FIG. 5 is a perspective view showing the connecting member 40. FIG. 6 is a front view showing the appearance of the greening board 5. FIG. 7 is a cross-sectional view showing the structure of the greening system 1 according to the first embodiment. FIG. 8 is a plan view showing the arrangement of the greening board 5. 9 and 10 are cross-sectional views showing the structure of the water retention board 13.

  The greening system 1 according to the first embodiment is a greening system for growing a plant 10 such as a lawn. As shown in FIG. 7, a plurality of greening boards 5 on which the plant 10 is grown, And a water-permeable root-resistant sheet layer 27 as a sheet-like material provided below.

  The greening system 1 according to the first embodiment is provided on a concrete slab 17 constituting a rooftop of a building, for example. As a result, the roof of the building is greened by the greening system 1.

(Permeable root sheet layer)
The water-permeable root-resistant sheet layer 27 is made of a polyester nonwoven fabric such as “Cosmo Ann Glass” (registered trademark) manufactured by Toyobo Co., Ltd. having a thickness of about 0.1 mm, and is installed on the surface of the concrete slab 17. The water-permeable root-resistant sheet layer 27 is a sheet configured to transmit water while not passing through the roots of the plant 10. By providing this water-permeable root-resistant sheet layer 27, water can be appropriately retained between the water-permeable root-resistant sheet layer 27 and the greening board 5, and water can be supplied to the back side of the greening board 5. Moreover, the concrete slab 17 surface which is an installation surface can be reliably protected from the invasion of the root of the plant 10.

  Various sheets having root resistance and water permeability can be applied to the water-permeable root-resistant sheet layer 27. For example, a resin nonwoven fabric having a thickness of about 0.1 mm to 0.5 mm, a densely woven resin woven fabric, or a cotton fabric can be used. Other examples of such materials include water-permeable sheets such as “Ecolo Base” (registered trademark), which is a spunbond polyester resin nonwoven fabric of Burmatel Corporation.

(Greening board)
As shown in FIGS. 1 and 2, the greening board 5 includes a water retention board 13 having water retention, a perforated sheet 28 provided on the surface of the water retention board 13, and a side opposite to the perforated sheet 28 in the water retention board 13. And a connecting member 40.

<Water retention board>
The water retention board 13 is suitably configured by a so-called insulation board having a specific gravity of about 0.05 to 0.3. The insulation board is a wood fiber board 19 obtained by wet-making long wood fibers together with a binder and wax and molding them into a plate shape. Usually, the insulation board is internally added with wax to improve water resistance, and has some water repellency. Therefore, in this embodiment, the wettability of the water retention board 13 is improved by a surfactant or the like, so that the water retention board 13 is easily in a water retention state. As such a surfactant, for example, “Water-in” (registered trademark) or “Water-in chelate” (trade name) from Hyponex Japan, Inc. can be applied.

  The water retention board 13 is formed in, for example, a rectangular plate shape having a vertical and horizontal length of 90 cm, and the thickness thereof is about 11 mm. As shown in FIG. 9, the water retention board 13 has a hydrophilic layer 20 having hydrophilicity at least on the surface layer portion on the opposite side of the water-permeable root-resistant sheet layer 27 in the water-repellent insulation board. The thickness of the hydrophilic layer 20 can be about 5 mm, for example. Thus, the water retention board 13 is constituted by the wood fiber board 19 having water retention.

  The water retention board 13 is a hydrophilic layer 20 as a whole in a state where the greening system 1 after construction is configured, but as shown in FIG. 9, at least a part of the surface layer portion of the insulation board before construction. On the other hand, a hydrophilic layer 20 is formed, and a water-repellent layer 21 having water repellency in other portions is formed.

  For example, as shown in FIG. 9, the water retention board 13 before construction may have the hydrophilic layer 20 formed only on the surface layer portion opposite to the water-permeable root-resistant sheet layer 27, as shown in FIG. 10. The entire surface layer portion may be the hydrophilic layer 20 and the inner portion thereof may be the water repellent layer 21. Moreover, the whole water retention board 13 before construction may be made hydrophilic.

  Here, if the specific gravity of the wood fiber board 19 constituting the water retention board 13 is less than 0.05, not only the resistance to a load for a person to walk on it is insufficient, but also the water retention amount is greatly increased. It will decrease. On the other hand, if it exceeds 0.35, the specific gravity is too high and the plant root viability decreases. Therefore, the specific gravity of the wood fiber board 19 is set to 0.05 to 0.35.

  Further, when the thickness of the wood fiber board 19 is less than 10 mm, the water retention amount is significantly insufficient. On the other hand, when the thickness exceeds 25 mm, the cost increases unnecessarily, so that the thickness is 10 mm to 25 mm.

  A part of the plurality of water retention boards 13 is arranged in a matrix as shown in FIG. 8, and is arranged in a plane as a whole.

  Further, as shown in FIG. 3, a plurality of hole portions 43 may be formed on the surface of the water retaining board 13 on the side of the perforated sheet 28 (that is, the side opposite to the water-permeable root-resistant sheet layer 27). The size of the hole 43 is, for example, about 2 mm in diameter and about 3 mm in depth. By forming the hole 43, the root viability of the plant 10 can be enhanced. Further, fertilizer is provided in each of the plurality of holes 43. Fertilizer is a granular fertilizer for lawn. Starch was applied to the surface of the water retention board 13 in which the fertilizer was put in the hole 43 and dried. As a result, the fertilizer is fixed to the water retention board 13.

  On the other hand, as shown in FIG. 4, a plurality of grooves 50 are formed on the back surface side of the water retention board 13. Each of the plurality of groove portions 50 is formed, for example, in a straight line shape, and both end portions of the groove portion 50 are formed as open ends on two different sides on the back surface of the water retention board 13.

  The width of the groove 50 is about 1 mm to 5 mm, and the depth of the groove 50 is 1 mm or more and about half or less of the thickness of the water retention board 13. The dimension and the number of the groove portions 50 are defined so that the strength can be secured according to the usage mode of the greening board 5. The groove portions 50 in the present embodiment have a width of about 2 mm and a depth of about 3 mm, and are arranged in parallel with each other at an interval of 10 cm, for example. Moreover, the groove part 50 is extended in parallel with 2 sides which the water retention board 13 opposes.

  The number of the groove portions 50 may be one, but the larger the number, the more preferable in that water can be uniformly supplied to the back surface of the water retention board 13. When increasing the number of grooves, the strength decreases as the depth increases, and it is preferable to ensure the strength as a depth of about 1 mm to 3 mm. On the other hand, making the groove depth shallower than 1 mm is not preferable because the groove shape may not be maintained when the water retention board 13 absorbs water and expands.

  By providing the plurality of groove portions 50 in this way, it is possible to guide the water flowing down from between the adjacent greening boards 5 by the groove portions 50 and supply water to the entire back surface of the water retention board 13.

<Perforated sheet>
As shown in FIG. 2, the perforated sheet 28 is provided so as to cover the surface of the water retention board 13 on which the hydrophilic layer 20 is formed, and is configured by a sheet having a plurality of holes. The perforated sheet 28 can be suitably formed from, for example, a resin nonwoven fabric or a plant-derived fiber fabric such as hemp or jute. In addition, you may comprise the perforated sheet | seat 28 combining these resin nonwoven fabrics, plant-derived fiber fabrics, etc.

  The perforated sheet 28 in the present embodiment is made of a polylactic acid resin nonwoven fabric having a thickness of 0.1 mm. The polylactic acid resin is a so-called biodegradable plastic and is decomposed into soil in about one month to one year.

  A large number of lawn seeds 29 are sown on the surface of the perforated sheet 28 and fixed by starch paste. The perforated sheet 28 is integrally fixed to the connecting member together with the water retaining board 13 by a fixing member 44 such as a screw. Thus, a large number of seeds 29 are held on the water retention board 13 by the perforated sheet 28. As another example, seeds 29 may be seeded so as to be sandwiched between two perforated sheets 28 and held on water retaining board 13.

<Connecting member>
The connecting member 40 is for fixing a plurality of water retention boards 13 to each other. As shown in FIGS. 1, 2, 5, and 6, the connecting member 40 is a rectangular plate having substantially the same size as the water retention board 13. It is comprised by the resin member. The connecting member 40 is provided on the opposite side of the water retaining board 13 from the perforated sheet 28.

  On the side surface of the connecting member 40, a plurality of plate-like projections 41 projecting laterally and a plurality of cutouts 42 having substantially the same width as the projections 41 are formed. A through hole 45 is formed in the protrusion 41 so as to vertically penetrate the protrusion 41. On the other hand, as shown in FIG. 6, a pin 47 protruding downward is formed in the notch portion 42.

  Then, the connecting member 40 protrusion 41 is fitted into the notch 42 of the other connecting member 40 and the pin 47 of the notch 42 is inserted into the through hole 45 of the protrusion 41 so that each connection The members 40 are connected to each other.

  The connection structure by the connecting member 40 may be configured such that the protrusion 41 is detachably connected to the notch 42, or the protrusion 41 is detachably connected to the notch 42. If the connecting members 40 are detachable from each other, when a part of the plant 10 is peeled off or withered, only the greening board 5 in that part can be replaced with a new one.

  Further, as shown in FIG. 5, the connection member 40 has a large number of through holes 46 formed on the surface of the water retention board 13. Thereby, the greening system with good drainage can be supplied without the puddle on the surface of the water retention board 13.

(plant)
As shown in FIG. 1, the plant 10 is a plant in which buds germinated from the perforated sheet 28 of the greening board 5 grow. The roots of the plant 10 are settled on the water retention board 13. That is, the plant 10 is directly vegetated on the surface of the water retention board 13. The plant 10 is most preferably a lawn in consideration of humans walking and exercising on the plant 10.

  When a human does not walk on the plant 10, a vine plant or other flowers may be used as the plant 10. In addition, the moss may be used as the plant 10, but the moss has no roots and is easy to peel off. Therefore, particularly when the greening board 5 is mounted on a wall surface or when the greening board 5 is installed outdoors, for example, It is desirable to cover the surface with a mesh sheet, or to fix and integrate the mesh sheet and the water retention board 13 together.

-Construction method-
Next, the construction method of the greening system 1 will be described. In this embodiment, the greening system 1 is formed on the concrete slab 17 on the rooftop of a building or the like.

  First, the water-permeable root-resistant sheet layer 27 is disposed on the surface of the concrete slab 17. Thereafter, the plurality of greening boards 5 are arranged in a matrix as shown in FIG.

  Therefore, a plurality of greening boards 5 are formed in advance. First, in order to form the water retaining board 13, a plurality of grooves 50 are formed on the back side of the wood fiber board 19 having water repellency (that is, the water-permeable root-resistant sheet layer 27 side). On the other hand, a plurality of holes 43 are formed on the surface side of the wood fiber board 19.

  Next, water containing a surfactant is brought into contact with the wood fiber board 19 to leave a water repellent layer 21 having water repellency on the wood fiber board 19, while at least part of the surface layer portion of the wood fiber board 19 is hydrophilic. The hydrophilic layer 20 having properties is formed. Specifically, the wood fiber board 19 is floated or dipped in an aqueous solution obtained by diluting the surfactant “Water-in” (registered trademark) 500 times. When the wood fiber board 19 is floated, the wood fiber board 19 is gradually retained from the portion in contact with the water. Then, the hydrophilic layer 20 is formed with a water retention state of about 5 mm from the surface. In this way, the water retention board 13 is formed.

  As described above, the water retention board 13 before construction may have the hydrophilic layer 20 formed only on the surface layer portion opposite to the water-permeable root-resistant sheet layer 27 as shown in FIG. As described above, the entire surface layer portion may be the hydrophilic layer 20, while the inner portion thereof may be the water repellent layer 21.

  Next, after the hole 43 is filled with fertilizer, the perforated sheet 28 and the water retaining material are disposed with the perforated sheet 28 disposed on the front surface side of the water retaining board 13 and the connecting member 40 disposed on the back surface side of the water retaining board 13. A fixing member 44 such as a screw is attached to the board 13 and the connecting member 40 to fix them together.

  Subsequently, starch paste is applied to the perforated sheet 28, and a large number of lawn seeds 29 are seeded on the surface of the starch paste and dried. In this way, the seed 29 is held on the water retention board 13 by the perforated sheet 28.

  A perforated sheet 28 in which a large number of seeds 29 are held in advance by starch glue or the like may be provided on the surface of the water retention board 13. As a result, a large number of seeds 29 can be collectively held on the perforated sheet 28, so that the greening board 5 can be easily manufactured.

  A plurality of seeds 29 may be sandwiched between the surface of the water retention board 13 and the perforated sheet 28. As a result, since the seed 29 is not seeded on the perforated sheet 28 in advance, the perforated sheet 28 itself can be easily manufactured.

  The plurality of greening boards 5 thus formed are installed on the surface of the water-permeable root-resistant sheet layer 27 while being connected by the connecting member 40. Moreover, the edge part of the connection member 40 was fixed to the floor surface of the concrete slab 17 with the fixing member.

  In this way, the greening system 1 is constructed. When water was sprayed on the surface of the constructed greening board 5, the seeds 29 of the lawn germinated in about 2 weeks, and the entire surface of the greening system 1 was covered with the lawn after 2 months. Thus, a drastically lightweight greening system 1 can be realized without using soil.

  Therefore, according to this Embodiment 1, since the water retention board 13 consists of the wood fiber board 19, even if the root of the plant 10 is entangled with the water retention board 13, the water retention board 13 is burned with the root of the said plant 10 now. Can be disposed of, and the burden on the environment at the time of disposal can be easily reduced.

  Moreover, since the seeds 29 are held on the water retention board 13 by the perforated sheet 28, the grass roots are made to live on the surface of the water retention board 13 in advance before construction on the site, or the water retention board 13 is installed on the site. After that, the work of unfolding and placing the roll lawn on the surface of the water retention board 13 becomes unnecessary. Therefore, since the greening board 5 has a lightweight configuration, a separate operation for installing the lawn is not necessary, and the workability can be greatly improved.

  Further, the seed 29 of the plant 10 can be appropriately held on the water retention board 13 by the perforated sheet 28. Moreover, since the several hole part 43 was formed in the surface of the water retention board 13, the root of the plant 10 germinated from the seed | species 29 can be easily entrapped in the hole part 43. FIG. In addition, since the fertilizer is provided in the hole portion 43 where the root of the plant is settled, the plant 10 can be suitably nourished to promote its growth.

  Furthermore, since the plurality of water retention boards 13 are fixed to each other by the connecting member 40, the displacement of the greening boards 5 can be prevented.

<< Embodiment 2 of the Invention >>
FIG. 11 shows Embodiment 2 of the present invention. FIG. 11 is a cross-sectional view showing the structure of the greening system 1 according to the second embodiment. In the following embodiments, the same portions as those in FIGS. 1 to 10 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 11, the greening system 1 in Embodiment 2 includes a plurality of greening boards 5 on which plants 10 are grown, and a water-permeable root-resistant sheet layer 27 as a sheet-like material provided under the greening board 5. And. The perforated sheet 28 has the same configuration as that of the first embodiment.

  The greening system 1 according to the second embodiment is provided on, for example, the ground 18. Thereby, even if the ground 18 is a geology in which plants are difficult to grow, it can be greened by the greening system 1.

  On the surface of the ground 18, a water-permeable root-resistant sheet layer 27 having a thickness of about 0.1 mm is provided as in the first embodiment. A plurality of greening boards 5 are installed on the surface of the water-permeable root-resistant sheet layer 27.

  The greening board 5 in this embodiment has the water retention board 13 and the perforated sheet | seat 28 provided in the surface of the water retention board 13, as shown in FIG. And the greening board 5 in this embodiment does not have the connection member 40. FIG.

  As in the first embodiment, the water retention board 13 is constituted by a wood fiber board 19 having a specific gravity of about 0.05 to 0.3. The water retention board 13 is formed in, for example, a rectangular plate shape having a vertical and horizontal length of 90 cm, and the thickness thereof is about 11 mm. A hydrophilic layer 20 is formed at least on the surface layer portion of the water retaining board 13 on the perforated sheet 28 side.

  In the water retention board 13 in the first embodiment, the groove portion 50 is formed on the back surface side. On the other hand, the water retention board 13 in the present embodiment has a plurality of through holes 51 extending in the thickness direction of the water retention board 13. Is formed. In addition, after forming the groove part 50 in the back surface side, you may make it form the several through-hole 51. FIG.

  Therefore, according to the second embodiment, since the greening board 5 has the perforated sheet 28, in addition to obtaining the same effect as the first embodiment, a plurality of through holes 51 are formed in the water retention board 13. As a result, the root viability of the plant 10 can be enhanced, and the water retention board 13 itself can be made water permeable.

  In order to improve the energization, a hole having an inner diameter of about 0.5 mm to 1 mm may be used. However, in order to ensure water permeability, it is desirable to make the inner diameter of the through hole 51 larger than 1 mm. If the inner diameter of the through hole 51 is 1 mm or less, the water retaining board 13 swells due to water absorption, so that the through hole 51 is blocked and the water permeability may be greatly reduced.

  Therefore, in particular, when watering is performed from the surface side of the greening board 5, it is possible to surely infiltrate the entire water retaining board 13. Furthermore, for example, when excessive water is supplied to the surface of the greening system 1 due to rainfall or the like when the greening system 1 is installed outdoors, the water is transferred to the back side of the water retention board 13 by the plurality of through holes 51. Since it can be made to flow down, the drainage property of this greening system 1 can be improved dramatically.

  Furthermore, since the plurality of through holes 51 are formed on the surface of the water retention board 13, the roots of the plant 10 can be favorably laid by the water retention board 13.

<< Other Embodiments >>
In each of the above embodiments, the example in which the plurality of hole portions 43 are formed on the surface of the water retaining board 13 on the side of the perforated sheet 28 has been described. However, as shown in FIG. You may do it. In this case, a fertilizer may be further provided in each groove 48. As a result, the roots of the plant 10 germinated from the seed 29 can be easily established on the surface of the water retention board 13 in the groove 48. Furthermore, the plant 10 can be grown more suitably by giving nutrients by the fertilizer in the groove 48 to the roots that have been established.

  Further, the present invention is not limited to the first and second embodiments, and the present invention includes a configuration in which the first and second embodiments are appropriately combined.

  As described above, the present invention is useful for a greening board on which plants are grown and a greening system including the same.

1 Greening system
5 Greening board
10 plants
13 Water retention board
19 Wood fiberboard
28 Perforated sheet
29 species
40 connecting members
43 holes

Claims (7)

A greening board on which plants are grown,
A water retention board made of wood fiber board having water retention,
A perforated sheet provided on the surface of the water retention board and having a plurality of holes,
The greening board characterized in that the plant seed is held on the water retention board by the perforated sheet. The greening board according to claim 1,
The planting board characterized in that the seed of the plant is sown in the perforated sheet. In the greening board according to claim 1 or 2,
A greening board, wherein a plurality of holes or a plurality of grooves are formed on a surface of the water retaining board on the side of the perforated sheet. The greening board according to claim 3,
A greening board, wherein fertilizer is provided in the plurality of holes or the plurality of grooves. In the greening board as described in any one of Claims 1 thru | or 4,
A greening board, wherein a connecting member for fixing the plurality of water retention boards to each other is provided on the opposite side of the water retention board to the perforated sheet. A planting system comprising a plurality of planting boards on which plants are grown,
The greening board comprises a water retention board made of a wood fiber board having water retention, and a perforated sheet provided on the surface of the water retention board and having a plurality of holes,
The planting system characterized in that the plant species are held on the water retention board by the perforated sheet. In the greening system according to claim 6,
The said greening board has a connection member provided in the said water retaining board on the opposite side to the said perforated sheet | seat, respectively, The greening system characterized by being mutually connected by the said connection member.

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