JP3233877B2 - Planting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for easily planting trees, flowers and other plants, and more particularly to a planting device provided for cultivating plants on the roof or roof of a building. It is.

[0002]

2. Description of the Related Art In recent years, attempts have been actively made to plant inorganic plants in urban areas by planting large-scale plants on the rooftops and other spaces of buildings. In such a case, in many cases, a concrete layer of the presser is formed on the waterproof layer on the slab surface of the building, and a gravel layer made of sand, gravel, etc. The layers are sequentially stacked to plant the plants.

However, in order to obtain sufficient water retention and drainage for plants, it is necessary to introduce a considerable amount of earth and sand into the waterproof layer, and the concrete layer has a considerable weight. Has the problem of adversely affecting Therefore, the present applicant has previously disclosed a lightweight planting apparatus having excellent water retention and drainage properties (for example, see Japanese Patent No. 2531542).

In this planting apparatus, a waterproof layer is fixed on a slab surface formed on the roof of a building or the like, and a water retention material having a nonwoven fabric, a concave portion and a convex portion 2 are provided on the upper surface of the waterproof layer. A water retention / supply / drainage means comprising a drain plate or the like is provided, and a planting layer comprising a gravel layer and a soil layer is laminated above the water retention / supply / drainage means. Water retention and drainage can be obtained. For this reason, the concrete layer provided in consideration of drainage becomes unnecessary, and the planting layer is also set to a necessary minimum thickness in consideration of the root hair length of plants and the like, for example, about 50 mm by improving water retention. It has become possible.

[0005]

Therefore, in the above-mentioned conventional planting apparatus, although the whole apparatus has an excellent function of reducing the weight and avoiding adverse effects on buildings, it is still to be improved. It involves several issues. That is, first, no measures against wind are taken.
This type of equipment is often installed at high places, such as on the roof of a building, but in such high places winds are always generated in an irregular direction, which causes the soil in the guest soil layer to scatter. Cheap.
Further, it is desirable that the guest soil layer be constructed as thin as possible from the viewpoint of the load on a building or the like. However, if it is made too thin, the roots of the planted plant will not be stretched and will collapse even in a slight wind. This is particularly remarkable when plants are planted, and in the case of trees that grow to a certain height, it is difficult to erect them even when there is no wind.

Further, in this type of apparatus, once the soil layer is constructed, it is difficult to cultivate the soil of the soil layer, and the ventilation below the soil layer becomes poor, which is important for the growth of plants. Will have an effect. Furthermore, at present, there is also a request from users who want to plant trees not only on a horizontal surface such as a rooftop but also on an inclined surface such as a sloping roof or the like. When applied, the installation state becomes unstable, and it is particularly difficult to maintain the soil of the guest soil layer.

[0007]

According to the present invention, there is provided a waterproof layer provided at the bottom of the apparatus, and a root gauze stretched over the waterproof layer to prevent plant hair roots and the like from leaking out of the apparatus. And a water retention layer stretched over the root guard and a water retention layer provided on the water retention layer for retaining and draining rainwater or the like penetrating from above or supplying water from the water retention layer to the roots of plants. In order to do so, a water retention / supply / drain means comprising a drain plate provided with a water permeable hole at the top of the protrusion, wherein the protrusion and the recess are formed continuously,
A filter layer formed on the water retaining / supplying / draining means for preventing intrusion of soil and the like from the soil layer, and a soil layer for planting plants and the like built on the filter layer; A protective layer stretched on the upper surface of the layer and having ventilation and water permeability, fixing means for the protective layer, indicator means for indicating the thickness of the soil layer to be laminated, and soil scattered in the soil layer Soil-locking means for preventing movement of the air-permeable and water-permeable protective layer is formed of a knitted body or a nonwoven fabric, and one end of the fixing means is locked to the protective layer. The other end is engaged with the water retention / drainage means, and the fixing means is formed of a hollow body, a through hole is formed at the top, and a plurality of engaging portions having a through hole are formed at the bottom outer edge, The respective through holes are respectively formed with the water through holes of the protrusions of the protective layer and the drain plate by engaging means. It is intended to solve the problems described above by configured to be sintered.

[0008] In addition to the above configuration, the planting apparatus according to the present invention may further comprise a support layer between the filter layer and the soil layer for supporting the soil layer and fixing the root of the plant. And a ventilating means for connecting between the water-holding / water-supplying / draining means and the protective layer.

Further, the protective layer having ventilation and water permeability is formed of a knitted body or a non-woven fabric, and the fixing means has one end locked to the protective layer and the other end locked to the water retention / drainage means. There is.

The fixing means is formed of a conical or pyramid-shaped hollow body, or the like, and has a through hole formed at the top thereof and a plurality of engaging portions having a through hole formed at an outer edge of the bottom thereof. Each of the through holes may be respectively connected to the protective layer and the water through hole of the convex portion of the drain plate by an engaging means. The hollow body may be formed on the drain plate integrally with the drain plate.

Further, the venting means is constituted by the hollow body constituting the fixing means and a through hole formed at the top of the hollow body, and the indicator means and the soil engaging means are constituted by the hollow body. May be.

[0012]

In the present invention, since the protective layer is provided on the guest soil layer, even if the planting device is installed on the rooftop of the building or on a sloped roof or the like where the wind is easily received, the soil is scattered or planted. Plants, flowers and other plants can be prevented from collapsing due to wind. Further, since the roots of the plants to be planted are fixed on the support layer, the cultivated plants can be stably erected even when the thickness of the soil layer is reduced. Furthermore, the ventilation means connecting between the water retention / drainage means and the protective layer ensures the air permeability at the root of the plant to be planted, so that the plants grow smoothly without cultivating the soil layer. .
Since the thickness of the soil layer can be adjusted according to the indicator means, the construction of the soil layer becomes extremely easy. Even if the soil layer is thinned due to the presence of the soil locking means, the soil is stable. Is maintained.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the figure, A is a waterproof layer attached to a concrete slab surface on the roof of a building, and on the upper surface of the waterproof layer A, a resin-made material for preventing the roots of plants from entering the waterproof layer. A root guard B is installed.

C1 is a nonwoven mat as a water retention layer laminated on the upper surface of the root guard B. The nonwoven mat C1 stores and retains excess moisture as described later. C2 is a resin or metal drain plate as a water retention / drainage means, in which a large number of convex portions C21 having a truncated cone shape and concave portions C22 having a substantially conical shape are formed alternately and continuously over the entire surface. It has a hole C21a.

Reference numeral C3 denotes a nonwoven fabric as a filter layer provided on the upper surface of the drain plate C2, which prevents earth and sand of the later-described soil layer F from flowing in the direction of the drain plate C2. F is a guest soil layer on which seed plants and the like are planted. 1
Is a lattice-shaped frame as a support layer interposed between the soil layer F and the filter layer C3, and is held by a planar top of the convex portion C21 of the drain plate C2. Numeral 2 is a knitted material as a protective layer laid on the upper surface of the soil layer F. The knitted material 2 can pass through the trunk of the vegetation planted on the soil layer F and grow as the trunk grows. Have stitches to get.

Reference numeral 3 denotes a hollow body as a means for fixing the protective layer 2, a plurality of which are buried in the soil layer F. The protective layer (knitted material) 2 is locked at the top, and the lower end is formed. Is locked to the drain plate C2.

FIG. 2 is a partially cutaway perspective view showing the support layer 1 and the filter layer C3. The support layer 1 is formed of a lattice frame formed of a resin or metal pipe as described above. The drain plate (water retention / drainage means) C2 is held by the flat top of the projection C21 via the nonwoven fabric C3 as the filter layer C3.

FIG. 3 is a perspective view showing a hollow body as the fixing means 3. The hollow body (fixing means) 3 has a substantially truncated conical shape, and a through hole 3a is provided at the top of the plane. The bottom outer edge is provided with a flange as a locking portion 3b having through holes 3b1 at four corners, and is formed of a resin material or a metal material. The hollow body (fixing means) 3 is held by the flat top of the convex portion C21 of the drain plate (water retention / drainage means) C2, and the through hole 3b1 of the flange 3b and the flat top of the convex portion C21 of the drain plate C2. A screw as an engagement means is loosely fitted to the water permeable hole C21a.

FIG. 4 is a view showing the mutual relation between the protective layer (knitted material) 2, the hollow body (fixing means) 3, the convex portion C21 of the drain plate (water retention / drainage means) C2, and the drain plate (water retention / drainage means) C2. It is sectional drawing which shows a structure. As described above, on the entire surface of the resin or metal drain plate 3 as the water retention / drainage means, a plurality of truncated cone-shaped protrusions C21 and a plurality of substantially conical recesses C22 are alternately formed continuously.
The plane top of the convex portion C21 has a water permeable hole C21a.
The hollow body (fixing means) 3 is supported by the flat top of the convex portion C21, and the through hole 3b1 in the flange (locking portion) 3b of the hollow body (fixing means) 3 and the water permeability at the flat top of the convex portion C21. As described above, the screw as the engagement means is loosely fitted between the hole C21a. The protective layer (knitted material) 2 and the hollow body (fixing means) 3 are inserted into the stitches of the protective layer (knitted material) 2 and the hollow body (fixing means) 3
The engagement between the flange (locking portion) 3b and the flat top of the convex portion C21 is not the screw connection as described above. ,
An adhesive may be used.

FIG. 5 is a view showing an embodiment in which the hollow body (fixing means) 3 and the drain plate (water retention / drainage means) C2 are integrally formed. That is, in this embodiment,
A plurality of hollow bodies (fixing means) 3 are provided at appropriate intervals between the convex portion C21 and the concave portion C22 and are integrally formed with the convex portion C21 and the concave portion C22. ) C2 is configured.

FIG. 6 shows a ventilation means 3 provided between a protective layer (knit material) 2 and a drain plate (water retention / drainage means) C2.
FIG. 3 is a diagram showing an example of the first embodiment. In this embodiment, the ventilation means 3
1 is a through hole 3a formed at the top of the hollow body 3 and a hollow 3
c. A screw for locking the protective layer (knitted material) 2 is attached to the through hole 3a. Since the screw is loosely fitted into the through hole 3a as described above, the air flows into the atmosphere and the drain plate ( (Water retention / water supply / drainage means) C2.

FIG. 7 is a diagram showing an embodiment of the indicator means 4 for indicating the thickness of the soil layer F to be laminated. In this embodiment, the index means 4 is constituted by the hollow body 3 shown in FIG. 4 or FIG. That is, the hollow body 3 in the embodiment shown in FIG. 4 or FIG. 5 has both functions of the fixing means and the index means. Due to this indicator means, the formation of the soil layer can be made very easily. That is, in stacking the soil, the earth and sand may be introduced with the top of the hollow body 3 being the upper limit of the stacking, so that the stacking can be performed easily and efficiently.

FIG. 8 is a view showing another embodiment of the fixing means. The fixing means 5 is composed of a bridging portion 51, legs 52, 52 provided at both ends thereof and slightly expanding each other, and flanges 53, 53 formed at the lower ends of the legs.
It is formed of resin or metal material. The bridge 51
The protective layer 2 and the drain plate (water retention / drainage means) C are provided by screws using the upper through hole 5a and the through hole 53a on the flange 53.
2, and an adhesive may be used.

FIGS. 9 and 10 are views showing a state in which the hollow body 3 shown in FIG. 3 and the fixing means 5 shown in FIG. 8 are stacked. These can be stacked as shown, which is convenient in various situations.

Next, the operation of this embodiment will be described based on the above configuration. A part of the water is impregnated and held in the soil layer F due to the precipitation or drainage of the soil layer F, and the other water drops through the filter layer C3 to the drain plate C2 and is stored in the concave portion C22 ( (See FIG. 1).

When the amount of water reaching the drain plate C2 is large and cannot be accommodated in the concave portion C22, the water passes through the water permeable hole C21a provided at the top of the convex portion C21 and passes through the water retaining layer (nonwoven fabric).
Absorbed and retained in C1. When the amount of supplied water exceeds the above absorption amount, the water L is supplied to the concave portion C22.
The water is appropriately drained through a passage formed by the above.

When the amount of water retained in the soil layer F is reduced and dried, the water stored in the concave portion C22 or the water retained in the fiber mat C2 of the water retaining layer F is drained as steam. Water permeable hole C of convex portion C31 of plate C3
After reaching the soil layer F through the base 31a, water is appropriately supplied. In addition, since the inner part of each convex part C31 communicates with each other, it always becomes a ventilation path, and on the other hand, fresh air is supplied to the roots of the plant from the ventilation means 31 shown in FIG. And various pests can be prevented.

By the way, if the thickness of the soil layer F is reduced,
Although the tension of the roots of the plants is limited and the plants may be settled or fall down by a little wind, in the present invention, the support layer (lattice frame) 1 shown in FIG. Such inconvenience can be prevented. That is, since the roots of the plants that have advanced from the soil layer F are firmly fixed and gripped by the support layer (lattice frame) 1, even if the layer thickness of the soil layer F is reduced, the plants can grow. It will not fall.

On the upper surface of the soil layer F, a protective layer (knitted material) 2
To prevent scattering and runoff due to wind and rain on the soil. Since the protective layer (knitted material) 2 is fixed to the device by the fixing means 3, the protective layer (knitted material) 2 itself does not wind up. In addition, since the influence of the wind becomes larger at the peripheral portion of the device, the fixing means is correspondingly installed more at the peripheral portion of the device.

Since the apparatus according to the present invention has the index means 4 for the thickness of the soil layer F as shown in FIG. 7, the formation of the soil layer is easy. That is, as shown in FIG. 7, since the upper limit criterion is the top of the indicator means 4 when stacking soil,
It is only necessary to stack the soil so as to be flush with this, and complicated work such as measurement of the soil thickness is unnecessary. In the embodiment shown in FIG. 1, the thickness of the guest soil layer was set to be about 50 mm thin. However, the growth conditions of the plants were all normal, and it was possible to obtain the same result as when planting on normal soil. Was completed.

As described above, in this embodiment, since appropriate water retention and drainage properties can be obtained, the thickness of the planting layer is reduced to the minimum necessary thickness in consideration of the length of the root of the plant. Although the load on the building can be greatly reduced, the installation state is extremely stable while being lighter. That is, since the soil layer F is pressed by the protective layer, even when the device is installed on an inclined surface or the like, the soil in the soil layer does not fall off, and the fixing means 3 are scattered throughout the soil. Therefore, the soil does not move. It will not fall off or be blown off from the initial installation position, and will be firmly installed on the wall.

FIG. 11 is a sectional view showing an embodiment of the invention according to claims 9 to 11. In FIG. 11, S is a concrete layer, A is a waterproof layer formed on the surface of the concrete layer S, B is a resin root guard for preventing the roots of plants from entering the waterproof layer, C2 is a resin or metal drain plate as the water retention / drainage means exactly the same as that shown in FIG. 3, and has a truncated conical projection C2 over the entire surface.
1 and a large number of concave portions C22 having a substantially conical shape are formed alternately and continuously, and the top of the convex portion C21 has a water permeable hole C21a. The drain plate C2 is attached to the surface of the root guard B by an adhesive means 6 such as a double-sided adhesive sheet or asphalt. Because of the difficulty, the use of a double-sided adhesive sheet is desirable.

Numeral 2 denotes a knitted material as a protective layer laid on the upper surface of the soil layer F. The knitted material 2 allows the trunk of the vegetation planted in the soil layer F to pass through and grows the trunk. It has a stitch that can be extended as it goes. 31 is the protective layer 2
A plurality of hollow bodies are buried in the soil layer F, the protective layer (knit material) 2 is locked on the top, and the lower end is locked on the drain plate C2. ing. Reference numeral 7 denotes an earth retaining material that is locked by the hollow body 31 and buried in the guest soil layer F. Although not shown in FIG. 11, there is a gap between the soil layer F and the drain plate C2 in FIG.
The support layer 1 and the filter layer C3 having the configuration shown in FIG. 3 are interposed. The support layer 1 is formed of a lattice-like frame formed of a resin or a metal pipe as described above. The drain plate (water retention / drainage means) C2 is held by the flat top of the projection C21 via the nonwoven fabric C3.

FIGS. 12 and 13 show the connecting means 3 respectively.
1 is a perspective view and a cross-sectional view showing the hollow body as 1; this connecting means 31 has a substantially truncated cone shape;
A flat top 31b having a pin hole 31a; and a main body 31c.
And a flange formed on the outer peripheral edge of the lower end of the main body 31c and having four connecting pins P integrally formed at the four corners thereof. It is composed of a hollow body in which a slit portion 8 for stopping is formed.

As shown in FIG. 11, the knitted material (protective layer) 2 is provided at the top of the hollow body 31 with a pin hole 3 of the hollow body 31.
The hollow body 31 is locked by a locking pin 2a which is loosely inserted into the hole 1a.
It is connected to the drain plate (water retention / drainage means) C2 by loosely inserting it into 1a.

FIG. 14 shows the retaining material 7, the hollow body 31,
It is a perspective view showing the related composition of drain board C2. As described above, the hollow body 31 held at the top of the convex portion C21 of the drain plate 31 is connected to the drain plate C2 by the connecting pin P formed integrally with the flange 31d, and the hollow body 3
An earth retaining member 7 is locked to the one slit portion 8. The earth retaining member 7 is a longitudinal member formed of a resin material or an aluminum material having an L-shaped cross section, and has a width equal to the distance from the bottom of the slit portion 8 to the top of the hollow body 31 and has a predetermined value during use. It is cut into length and buried in the soil layer in a state where it is locked by the slit portion 8. Note that the retaining material 7 may be a flat plate instead of the L-shape.

Next, a procedure for constructing the planting apparatus according to the embodiment will be described with reference to FIG. First, the waterproof layer A is fixed on the concrete surface S, and the root guard B is adhered to the surface of the waterproof layer A. Next, the drain plate C2 is fixed to the root guard B by asphalt or a double-sided adhesive sheet 6. The support layer 1 and the filter layer C3 shown in FIG. 2 are set on the drain plate C2, the hollow body 31 is placed, and the connection pin P formed on the flange 31d is connected to the protrusion C21. It is inserted into the water permeable hole C21a and is locked to the convex portion C21 by the enlarged portion at the tip of the connecting pin portion P. Then, the soil retaining member 7 is fitted into the slit portion 8 of the hollow body 31 so as to be installed between the plurality of hollow bodies 31. Next, the appropriate soil is introduced to form the guest soil layer F. The introduction of the soil can be made extremely simple because the top of the hollow body 31 may be used as a guide. The knitted material 2 as a protective layer is laid on the guest soil layer F and the locking pin 2a is inserted into the pin hole 3 of the hollow body 31.
1a. Since the tip of the locking pin 2a is expanded, the knitted material 2 is fixed to the hollow body 31. The arrangement and the like of the hollow body 31 are made in consideration of various conditions, for example, the fact that blow-up of soil by wind and the like is likely to occur at the periphery of the apparatus. Also, a knitted material 2 as a protective layer
In addition, a nonwoven fabric or the like provided with plant seeds can also be used. Further, since the locking pin 2a is loosely inserted into the pin hole 31a of the hollow body 31, an air flow path is formed between the water retention / drainage means C2 and the pin hole 31a. The road constitutes a ventilation means connecting between the protective layer and the water retention / drainage means. As described above, according to the above-described embodiment, the planting apparatus can be constructed extremely simply and quickly. Moreover, since the soil stopper 7 can prevent the soil from flowing, the planting installation can be installed not only on a flat surface but also on an inclined portion.

[0038]

According to the present invention, the construction and operation described above can reduce the thickness of the soil layer to reduce the weight, prevent the growth of plants from being hindered by the thinning of the soil layer, and improve the soil due to wind and rain. Planting equipment that eliminates the scattering and outflow of water can be quickly and easily installed on various places such as rooftops and roofs of buildings, as well as on flat and sloped parts. It is a big contributor.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention.

FIG. 2 is a perspective view showing a support means and a filter layer in the one shown in FIG.

FIG. 3 is a perspective view showing a relationship between a fixing means (hollow body) and a drain plate in the embodiment.

FIG. 4 shows a protective layer (knitted material) 2, a hollow body (fixing means) 3, and a drain plate (water retention / drainage means) C in the embodiment.
It is sectional drawing which shows the structure of the mutual relationship of 2 convex parts C21, and the said drain board (water retention / drainage means) C2.

FIG. 5 is a view showing an embodiment in which a hollow body (fixing means) 3 and a drain plate (water retention / drainage means) C2 are integrally formed.

FIG. 6 is a sectional view showing a ventilation unit in the embodiment shown in FIG. 1;

FIG. 7 is a partial cross-sectional side view showing an indicator.

FIG. 8 is a view showing another embodiment of the fixing means.

9 is a view showing a state where the hollow bodies 3 shown in FIG. 3 are stacked.

FIG. 10 is a view showing a state in which the fixing means 5 shown in FIG. 8 are stacked.

FIG. 11 is a sectional view of an embodiment according to claim 9;

FIG. 12 is a perspective view of the hollow body 31 in FIG.

FIG. 13 is a longitudinal sectional view of the hollow body 31 in FIG.

FIG. 14 is a perspective view showing a related configuration of a retaining member 7, a hollow body 31, and a drain plate C2 in FIG.

[Explanation of symbols]

A. . . . . . Waterproof layer B. . . . . . . Route guard C1. . . . . . Water retention layer C2. . . . . . Water retention / drainage layer C3. . . . . . Filter layer 1. . . . . . . Support layer 2. . . . . . . Protective layer 3. . . . . . . 4. Fixing means (hollow body (venting means, indicator means)) . . . . . . 5. Fixing means (ventilation means, indicator means) . . . . . . 6. Bonding means (double-sided adhesive sheet, asphalt) . . . . . . Retaining material 8. . . . . . . Slit part 31. . . . . . Hollow body

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-8-87 (JP, A) JP-A-8-154500 (JP, A) JP-A-5-328849 (JP, A) 193838 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01G 7/00

Claims (8)

(57) [Claims] 1. A plant planting device installed on a rooftop of a building or the like, comprising: a waterproof layer provided on a bottom of the device; and a waterproofing device for preventing the roots of the plant from leaking out of the device. A route guard stretched over the layer, a water retention layer stretched over the route guard, and a rainwater or the like provided on the water retention layer to retain rainwater that permeates from above.
A water holding / supplying / draining means comprising a drain plate provided with a water permeable hole at the top of the convex portion, wherein the convex portion and the concave portion are formed continuously to drain or supply water from the water retaining layer to the root of the plant; A filter layer that is stretched over the water retention and drainage means to prevent intrusion of soil and the like from the soil layer, and a soil layer that is constructed on the filter layer and that is used for planting plants and the like; A protective layer stretched on the upper surface of the building and having ventilation and water permeability, fixing means for the protective layer, indicator means for indicating the thickness of the soil layer to be laminated, and Soil protection means for preventing movement; and wherein the protective layer having ventilation and water permeability is formed of a knitted body or a nonwoven fabric, and the fixing means has one end locked to the protective layer. The ends are locked to water retention and drainage means,
The fixing means is formed of a hollow body, a through hole is formed at a top portion thereof, and a plurality of locking portions having a through hole are formed at an outer edge of a bottom portion. And a planting device, wherein the planting device is connected to a water permeable hole of a convex portion of the drain plate. 2. The water-supplying / draining means and the protection layer according to claim 1, wherein a supporting layer for supporting the soil layer and fixing roots of plants is provided between the filter layer and the soil layer. A planting device provided with a ventilation means for connecting between layers. 3. The planting apparatus according to claim 1, wherein the hollow body has a conical shape. 4. The method according to claim 1, wherein
The planting device, wherein the hollow body is formed integrally with the drain plate on the drain plate. 5. The method according to claim 2, wherein
The planting apparatus according to claim 1, wherein the ventilation means comprises the hollow body constituting the fixing means and a through hole formed at the top of the hollow body. 6. The method according to claim 1, wherein
The planting device, wherein the indicator means and the soil locking means are constituted by the hollow body. 7. A plant planting device installed on a rooftop of a building or the like, comprising: a waterproof layer provided on the bottom of the device; and the waterproofing device for preventing the roots of the plant from leaking out of the device. A route guard stretched over the layer, a water retention layer stretched over the route guard, and a rainwater or the like that is stuck on the water retention layer by an adhesive means and penetrates from above. In order to drain or supply water from the water retaining layer to the roots of the plant, a water retaining / supplying / draining means comprising a drain plate having a water permeable hole at the top of the convex portion and the concave portion formed continuously with the convex portion, A filter layer that is stretched over the water retention and drainage means to prevent intrusion of soil and the like from the soil layer, and a soil layer that is constructed on the filter layer and that is used for planting plants and the like; A protective layer stretched on the upper surface of the device and having ventilation and water permeability, and engaging the protective layer and the water retention / drainage means. Connecting means, and a retaining material locked by the connecting means and buried in the soil layer, wherein the retaining material is formed by a longitudinal member having an L-shaped cross section, and the connecting means includes a pin hole. A hollow body having a flat top portion having a main body portion, and a flange portion formed on the outer peripheral edge of the lower end of the main body portion and integrally formed with connecting pin portions at four corners thereof; A slit portion for locking the earth retaining material is formed on an outer portion of the hollow body, and the protective layer is locked to the hollow body by a locking pin inserted into a pin hole at the top of the plane. A planting device, wherein the connection pin portion of the flange portion is connected to the drain plate by being inserted into the water-permeable hole of the projection of the drain plate. 8. The storage layer according to claim 7, further comprising a support layer between the filter layer and the soil layer for supporting the soil layer and fixing roots of the plants, the water retention / drainage means, and the protection. A planting device provided with a ventilation means for connecting between layers.