JP2002088768A - Slope block for planting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slope block for planting which reduces evaporation of moisture, ensures a sufficient planting space, maintains compatibility in arrangement with another block, and is applicable to a shore protecting block. SOLUTION: The planting slope block is comprised of a main body having an almost rectangular sideward cross section and an almost flat front surface, an almost flat front wall portion arranged over the front surface and upward protruding from a lower end of the front surface, almost triangular right and left side wall portions defined by right and left edges of the front wall portion and right and left edges of the front surface of the main body, respectively, engaging projections formed on right and left portions of an upper surface of the main body across a predetermined interval, engaging recesses formed in right and left portions of a lower surface of the main body across the predetermined interval such that each engaging projection pairs up with the corresponding engaging recess, and a recessed portion arranged in the vicinity of the center of the main body and opening in the upper surface and the front surface of the main body. Then, a space defined by the front surface, the front wall portion, and the right and left side wall portions of the main body, and the recessed portion form the planting space.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a planting slope block having a main body having a substantially rectangular side section and a substantially flat front surface.

[0002]

2. Description of the Related Art Conventionally, slope blocks have been used to prevent collapse of slopes and revetment of rivers. Although this slope block is very effective for the intended purpose, it is not necessarily good in terms of environmental protection and nature protection, such as hindering plant development and simplifying the environment.

For this reason, a so-called planting slope block having a function of planting the slope block is disclosed in, for example, Japanese Patent Application Laid-Open No. Hei 8-
No. 302715 (hereinafter referred to as block of Conventional Example 1) has been proposed.

[0004] As shown in FIGS. 9 to 11, a substantially horizontal bottom wall 3 is provided after the block is installed.
2 and a substantially semicircular, substantially vertical front wall portion 31 is provided so as to protrude forward from the front surface of the block main body portion 30, and a concave portion 34 is formed in the main body portion 30. A space 39 for planting is formed by the space formed by the wall 31 and the recess 34, and a ridge 35 extending in the vertical direction is provided on one of the left and right side walls 33, 33 of the block. On the other side, a groove 36 extending in the vertical direction is also formed.
In the upper portion of the bottom wall 32, engagement concave portions 37, 37 having a semicircular shape are formed, and in the center of the lower surface of the bottom wall 32, one engagement projection 38 protruding outward is formed.

When the blocks are arranged in the left-right direction during the construction of the blocks, the ridges 35 and the grooves 36 formed on the adjacent block side walls 33, 33 engage with each other. Semicircular engagement recess 37 formed above
Are combined to form one circular engagement recess 37.

Next, when stacking the upper blocks, an engagement projection 38 formed at the center of the lower surface of the bottom wall 32 is fitted into the circular engagement recess 37 and is shifted vertically by 1/2. To form a planting slope block having a bent shape.

[0007] However, the block of the prior art 1 has the following disadvantages. That is, the conventional example 1
Is formed by a substantially horizontal bottom wall 32 that protrudes forward from the planting space 39 in front of the block, and a substantially vertical front wall 31 that is substantially semicircular in shape. The space 39 is large enough to plant many plants and is perfect from the viewpoint of environmental protection and nature protection. However, concrete for producing the block only for the bottom wall 32 and the front wall 31 protruding from the front of the slope block is provided. The volume is increased and the manufacturing cost is increased.

In the block of the prior art example 1, the circular engaging concave portion 37 of the left and right side wall portions 33, 33 and the engaging convex portion 38 at the center of the lower surface of the bottom wall 32 are shifted by 1/2 in the upper and lower stages. One of the features is the engagement means that fits in the form described above, so that all blocks at the time of construction must be used for planting, and only some of the slope blocks to be installed are planted. It cannot cope with a planting block, and it cannot be arranged in the same row, resulting in poor flexibility.

By the way, slope blocks are often used for revetment of rivers, etc.
It must be able to cope with floods in the river, at least obstructing the flow of water,
Alternatively, the surface is generally formed to be substantially flat so that the driftwood or the like is not hindered from flowing.

However, floods of rivers occur at least several times a year, and most of them are in a state of tastelessness in which the revetment slope blocks have exposed the concrete on the surface. There is still strong demand for planting slope blocks, even for slope protection blocks.

Therefore, when the block of the conventional example 1 is adopted as such a slope protection block, planting is carried out by the bottom wall 32 and the front wall 31 which protrude greatly in front of the main body 30. Because it forms the space 39 for use, the flow of water is interrupted during floods, driftwood hits and destroys,
Occasionally, driftwood or the like may be caught and cause further secondary harm, and such a form is difficult to use for revetment.

Further, as apparent from the plan view of FIG. 11, the block of the prior art 1 is
Since almost the entire ground surface of the planting space 39 is directly exposed to the outside, there is an advantage that more or larger plants can be planted, but the ground surface directly exposed to the outside is large. This means that the area heated by the heat of the sun is large, the amount of water evaporation increases accordingly, and the water in the planting slope block depends on rainwater for the most part. The water inside evaporates quickly, which is fatal to plants.

On the other hand, for example, planting slope blocks (hereinafter referred to as blocks of Conventional Example 2) as shown in FIGS. 12 to 14 have been considered.

That is, when the block of Conventional Example 2 is adapted to the structure of the present invention, the cross section is substantially rectangular and the front surface 4
1 is a substantially flat main body portion 40, a substantially flat front wall portion 42 projecting upward from a lower end portion on a front side surface 41, and the front wall portion 42 and the front side surface 41 of the main body portion 40. And a substantially triangular left and right side wall portion 43, 43 formed between the left and right end portions of the main body 40. The front surface 41, the front wall portion 42, and the left and right side wall portions 43, 43 of the main body 40 form a planting space 44. And a planting slope block in which one engaging convex portion 47 or one engaging concave portion 48 is formed at the center of the upper and lower surfaces 45 and 46 of the main body 40, respectively.

[0015] In such a planting slope block, the disadvantage of the block of the conventional example 1 is that it is formed by protruding forward, so that the cost is high. Must be
The inconvenience that they cannot be arranged in the same row and the inconvenience of using them as seawalls clear all the disadvantages.

However, in the block of the conventional example 2, the upper and lower surfaces 45 and 46 at the center of the main body 40 are respectively provided with one.
An engaging projection 47 or an engaging recess 48 is formed, and these blocks (even if all are planting blocks,
As shown in FIG. 14, a part may be a planting block. ) Is one of the features of stacking up and down, so that the body portion 40 is not formed with a recess as a planting space like the block of the conventional example 1 as a matter of course. No consideration is given to forming a recessed portion in the hole.

Plants need only have at least a space on the ground surface where stems, stems, etc. can grow, but in the ground, they need a sufficient space for roots to absorb moisture. If these conditions are not satisfied even when used as a building block, large or many plants cannot be planted for a long period of time.

Looking at the block of Conventional Example 2 from such a viewpoint, the space 44 for planting is formed by the front surface 41, the front wall 42, and the left and right side walls 43, 43 of the main body 40. It is only a space with a triangular cross section with its apex facing down.There is no problem with the ground surface area, but it cannot be said that the underground volume is sufficient. Concentration at the apexes of the triangles located on the side causes rooting and the like, and results in adverse effects such as insufficient absorption of moisture and the like, which is not preferable. That is, the block of the conventional example 2 has a large defect that the amount and the shape of the planting space are not sufficient.

[0019]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art at the same time, that is, while reducing the amount of evaporation of water,
An object of the present invention is to provide a planting slope block which can secure a sufficient planting space, has compatibility in arrangement, and is also suitable as a seawall.

[0020]

To achieve the above object, the present invention employs the following constitution.

According to the first aspect of the present invention, a main body portion having a substantially rectangular side cross section and a substantially flat front surface, and a substantially flat front wall portion projecting upward from a lower end portion of the front surface. A substantially triangular left and right side wall portion formed between the left and right ends of the front wall portion and the front surface of the main body portion; An engagement protrusion or an engagement recess arranged to form a pair on the upper and lower surfaces, and a recess formed in the vicinity of the central portion of the main body portion and formed on the upper surface and the front surface thereof. Has,
A configuration in which a space formed by a front surface, a front wall portion, and left and right side wall portions of the main body portion and a space for planting are formed by the concave portion.

With this configuration, a sufficient space for planting can be ensured without projecting the front wall portion forward, and the construction is applied to only a part of all the slope blocks when constructing the slope. It is also possible to arrange them in the same row or displace them by １ ／.

Even if the planting slope block is used for revetment, the front wall portion does not protrude forward from the front surface of the main body portion and has a flat shape. Therefore, even if some water resistance or the like occurs, the resistance is slightly smaller than that of the block of the conventional example 1, so that the original function as the bank protection slope block is not impaired.

Further, when the planting slope blocks are vertically stacked, the front surface of the main body is substantially flat.
The upper opening of the concave part will be covered by the bottom surface of the block on the upper stage, and although the surface area exposed to the ground will be reduced, the volume of the underground planting space can be increased, and its shape can also be reduced to the bottom Can be wider,
The water retention capacity is increased, and sufficient water and the like can be absorbed without causing rooting and the like, and the growth of the plant is promoted, and since the sunshine does not directly hit the recess, evaporation of the water is reduced. I do.

According to the second aspect of the present invention, the engaging projections or the engaging recesses are provided at positions substantially 1/4 from the left and right ends of the main body. With this configuration, when the slope blocks are stacked, they can be arranged in the same row and shifted by １ ／.

According to the third aspect of the present invention, the shape of the engaging projection or the engaging recess is such that the front side surface 7a is substantially vertical and the rear side surface 7b is inclined rearward after the block is installed. With this configuration, when the upper block is installed on the upper surface of the block, the upper block is free from rearward displacement by merely dropping the engaging concave portion on the lower surface of the upper block into the engaging convex portion on the upper surface of the lower block.

In the invention according to the fourth aspect, the planting space has a bottomed surface having substantially the same depth. With this configuration, the depth of the planting space can be formed as deep as possible, and the planting space can be widely taken.
Since the bottom is bottomed, water is retained for a long period without discharging soil and water from the planting space.

In the invention according to claim 5, the outer periphery of the left and right side wall portions is formed in a substantially arc shape. With this configuration, when a person looks at the planting slope block, the corners are rounded to give a soft feeling, and for use as a revetment, and for all the slope blocks to be installed. In such a case where the planting part is provided at predetermined intervals in part, the water resistance is further reduced in combination with the flat shape of the front wall portion, and the danger of driftwood or the like being reduced, The original function of revetment is more reliably achieved.

[0029] In the invention according to claim 6, the water retention material is provided in the planting space. With this configuration, even if the planting space does not have a bottomed surface (in that case, a net or the like is provided at the bottom of the space to prevent the discharge of soil or the like), introduction is performed. It is possible to keep rainwater and the like drained for a long time.

[0030] In the invention according to claim 7, the lid is provided at the upper opening of the recess. With this configuration, even if the upper and lower blocks are laterally shifted by 1/2 using a planting slope block having side recesses, the concrete poured between the adjacent side recesses is formed by the depression of the lower block. It will no longer flow into the department.

[0031]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) FIGS.
FIG. 1 is a plan view, FIG. 2 is a side view, and FIG. 3 is a side view after an inclined surface is constructed.

As shown in FIG. 2, the main body 1 has a substantially rectangular shape whose side cross section is rather close to a parallelogram.
The front surface 2 of the front surface is substantially flat, and its side surface has a largely cut-out side recess 13, and its rear surface has left and right flanges 12, 12 protruding laterally.

On the upper surface 5 of the main body, engagement protrusions 7, 7 of substantially polygonal pyramid shape as shown in FIGS. At the same time, a slightly larger engaging recess 8 having the same shape as the engaging protrusions 7 is formed in the lower surface 6 of the main body portion directly below the position of the engaging protrusions 7. .

Therefore, when the upper block is installed above the lower block during the construction of the block, the upper block can be placed in the same row as the lower block. The two engaging recesses 8, 8 formed on the lower surface 6 of the main body of one block placed on the upper stage can be engaged with the engaging protrusions 7, 7 of each adjacent block. For this reason, it is possible to perform installation in which the installation is shifted by half each side.

Further, the engagement projections 7, 7 have a form in which the front side surface 7a is substantially vertical and the rear side surface 7
b is formed so as to be inclined rearward, and when the upper block is installed on the upper surface of the block, the upper block is merely dropped by the engagement recess 8 on the lower surface of the upper block into the engagement protrusion 7 on the upper surface of the lower block. Stand alone without shifting backwards.

That is, the upper block tends to shift rearward because its center of gravity is behind the lower block, but the substantially vertical front side surface 7a of the engaging projection 7 of the lower block.
Is engaged with the substantially vertical front side surface of the engaging recess 8 of the upper block, so that merely placing the upper block does not cause the upper block to move rearward, so that a separate self-supporting support is not required. Thus, a predetermined gradient can be easily constructed.

The engaging projection 7 and the engaging recess 8 are
The mounting position may be upside down, and when the upper block is also arranged on the lower block, the invention according to claims 1 and 2 has a shape such that at least the upper block can be temporarily fixed. Any shape may be used.

On the other hand, a substantially flat front wall 3 is integrally formed on the front surface 2 of the main body 1 so as to protrude upward from the lower end thereof, and the front wall 3 and the main body 1 are formed integrally. A substantially triangular left and right side wall portion 4 is similarly formed integrally between the left and right end portions of the front surface 2 with the front surface 2.
The front wall portion 3 and the left and right side wall portions 4 and 4 form a front space K1 for planting having a substantially triangular cross section.

In the center of the main body 1, an opening is formed on the front surface 2 and the upper surface 5 of the main body, and has substantially the same width in the vertical direction and the same depth as the deepest part of the front space K1. Recess 9 as a rear space K2 dug down
Is formed, and the front space K1 and the rear space K2 are formed.
Together, they form a space for planting.

The shapes of the two spaces K1 and K2 are not limited to the shapes shown and described, and their respective depths do not necessarily have to be the same.

Next, 14 and 15 are water holes for taking rainwater into the planting spaces K1 and K2. Two water holes 14 and 15 provided on both sides of the main body 1 are provided. 14
Communicates with the front space K1, and a water hole 15 provided at the center thereof communicates with the rear space K2. The water holes 14, 14 on both sides or the water hole 15 at the center are provided. It may be only.

The front space K1 and the rear space K2 are provided with water-retaining substances 11, 11 capable of retaining water. The water-retaining materials 11, 11 may be, for example, any water-absorbing polymer that is currently frequently used as a sanitary napkin or disposable diaper. By doing so, the introduced water such as rain can be retained for a long period of time, and even if the sunshine continues for a while, the risk that the plants will die will be reduced.

The construction of the planting slope block according to the present invention will be schematically described with reference to FIG. 3. First, the sloping ground 18 on which the block is to be laid is made flat to some extent, and the block 18 is used for backing. Lay back quarry 16.

Next, the base 2 is placed on the flat portion below the sloped ground 18.
0, and the first-stage blocks are placed side by side on the upper part of the base 20, and then the blocks and the back quarry 16 are placed.
And between the side recesses 13 formed between adjacent blocks, and between the side recesses 13, 13, respectively.
pour in and harden. By doing so, the block and the concrete are more strongly bonded by the flange 12 of the main body 1. Reference numeral 19 denotes a water pipe, one of which is connected to the sloped ground 18, and the other of which is connected to water holes 14 and 15 formed in the main body 1.

When the first-stage block is provided,
A second-stage block is mounted on the upper block so that two engagement recesses 8 formed on the lower surface 6 of the upper block main body are engaged with the two engagement projections 7 on the lower block. Place.

Thereafter, the backing concrete 17 and the body concrete 17a are poured and hardened in the same manner as in the first step, and the second step is completed. By repeating that procedure,
Arrange all blocks. Although all the blocks in FIG. 3 are shown for planting, it is needless to say that only some blocks may be used.

The filling work for putting soil in the planting space or planting the plant may be performed at the time of block construction, but depending on the form of ordering, planting time or planting such as maintenance, etc. Even if it is not possible at the time of block construction, since the concrete poured on both sides of the block is integrated vertically and horizontally, block construction is not interrupted and the above-mentioned filling work is omitted and continued as it is, and after filling the block, filling work is performed It is also possible.

(Embodiment 2) FIG. 4 is a plan view of another embodiment, which is the same as Embodiment 1 except that the shape of the side wall portion is different from that of Embodiment 1.

That is, the side wall portion 10 has an arc shape. By making the arc shape in this way, when a person looks at the planting slope block, the corners are rounded and the entire block surface looks smooth, giving a soft feeling and In the case where the front wall portion 3 is flat, the water resistance is further reduced in a case where the planting portion is provided on a part of the entire slope block to be installed. In addition, the risk of catching driftwood and the like is reduced.

(Embodiment 3) The slope block of the present invention has been described as having the side recess 13 (not necessarily required) in the first embodiment. However, such a slope block for planting is used. When the upper block is displaced by 1/2 in the horizontal direction above the lower block at the time of constructing the block, when the concrete 17a is poured between the adjacent side recesses 13, 13, the concrete 17 is poured.
This is to solve the problem, because a part of “a” flows into the recess 9 of the lower block.

FIGS. 5 to 8 show an embodiment for this purpose, which is characterized in that a lid and a locking portion for the lid are provided at the opening on the upper surface of the recess 9, and the other features are the same as those of the first embodiment. is there.

That is, FIG. 5 is a plan view showing three upper sides 21a, 21a, and 2a forming the upper surface opening of the recess 9.
1b includes locking portions 21 for locking the lid 23, respectively.
Is formed. The locking portion 21 has a stepped shape as shown in FIG. 7, and a lid 23 is placed on the stepped locking portion 21 to close the upper opening of the recess 9.

The lid 23 is made of a flat plate made of concrete or an iron plate, and is set so as to be substantially flush with the upper surface 5 of the main body when the upper opening of the recess 9 is closed.

FIG. 8 shows the locking portion 22 having a tapered shape. In this case, the portion of the lid 23 that comes into contact with the tapered locking portion 22 is also tapered. When the lid is closed, the lid 23 slides down on the locking portion 22 with its weight even if the lid 23 is not placed on the locking portion 22 when the lid is closed, so that the lid 23 can be easily arranged at a predetermined position.

Although the lid separate from the block body has been described with reference to FIGS. 5 to 8, the lid for closing the upper opening may be formed integrally with the planting slope block. In that case, the locking portions 21 and 22 become unnecessary.

The present invention is not limited to the configuration of the above-described embodiment, and it is needless to say that the design can be appropriately changed without departing from the gist of the invention.

[0057]

According to the first aspect of the present invention, the main body has a substantially rectangular cross section and a substantially flat front surface, and a substantially flat front surface extending upward from the lower end of the front surface. A wall portion, a substantially triangular left and right side wall portion formed between left and right ends of the front wall portion and the front surface of the main body portion, and two right and left sides of the main body portion upper and lower surfaces separated by a predetermined distance. An engaging protrusion or an engaging recess arranged so as to form a pair on the upper and lower surfaces thereof, and a recess formed near the center of the main body portion and formed on the upper surface and the front surface thereof. And a space formed by a front surface, a front wall portion and left and right side wall portions of the main body portion, and a space for planting by the recessed portion, so that a front space of the stacking main body portion is formed. A sufficient space for planting can be secured even if the overhanging wall on the side surface does not overhang the front side much. Because, to reduce the concrete amount of block manufacture, it is possible to reduce the manufacturing cost.

Further, the slope block for planting can be applied to only a part of all the slope blocks at the time of construction on the slope, and can be arranged in the same row or shifted by 1/2. Therefore, various combinations of the slope blocks can be made, and the flexibility can be improved.

Further, even if the planting slope block is used for revetment, the front wall of the overhanging wall is flat and does not hinder the flow of water, etc. Since the function is not impaired, the planting block can be installed without worrying about the installation location.

Further, when the planting slope blocks are stacked up and down, the front surface of the main body is substantially flat, so that the upper opening of the recess is covered by the bottom surface of the block placed on the upper stage. Although the surface area exposed to the ground is reduced, the volume of the underground planting space can be increased, and its shape can be made wider, so that the water retention capacity is increased and rooting is caused. It absorbs sufficient moisture and promotes the growth of the plant, and the sun does not directly hit the recessed part. Can be reduced.

According to the second aspect of the invention, when the slope blocks are vertically stacked, they can be arranged in the same row and displaced by １ ／, so that the flexibility at the time of construction can be increased.

According to the third aspect of the present invention, the shape of the engaging protrusion or the engaging recess is changed such that the front side surface 7a is substantially vertical and the rear side surface 7b is inclined rearward after the block is installed, so that the lower block upper surface is By simply dropping the engagement recess 8 on the lower surface of the upper block into the engagement projection 7, the upper block can be made independent without shifting backward, so that a separate support for the independent is not required, and a predetermined gradient can be easily built. At the same time, manufacturing costs can be reduced.

According to the fourth aspect of the present invention, the planting space has a bottom surface having substantially the same depth, so that the planting space can be formed at the same time as deep as possible, and the planting space is made wider. And the bottoms of both sides are bottomed, so that soil and water are not discharged from the planting space, giving favorable conditions to the plants, and maintaining the function for planting for a long period of time. It can greatly contribute to environmental protection and nature conservation.

In the invention according to claim 5, by making the outer periphery of the left and right side walls substantially arc-shaped, when a person looks at the block, the corners thereof are rounded to give a soft feeling, You can soften the feeling you saw.

In the case where the planting slope blocks are used for revetment, and the planting slope blocks are provided at predetermined intervals on a part of all the installed slope blocks, Because the front wall of the overhanging wall has a flat shape to reduce water resistance and make it difficult for driftwood or the like to be caught, for example, during a flood, the overhanging wall or the like may be damaged by turbidity or driftwood, or Secondary disasters such as levee breaks caused by driftwood or the like being caught there can be more reliably prevented.

According to the sixth aspect of the present invention, by providing a water retention material in the planting space, water can be accumulated in the planting space for a long period of time. Since evaporation can be minimized, favorable conditions can be given to the plant, the function for planting can be maintained for a long time, and it can greatly contribute to environmental protection and nature protection.

In the invention according to claim 7, by providing a lid at the upper opening of the recess, the upper and lower blocks can be horizontally moved down by a planting slope block having side recesses.
Even if it is shifted, concrete flowing between adjacent side recesses does not flow into the recess of the lower block, so that a plurality of slope blocks can be arranged.

In addition, since the lid is integrally formed when forming the slope block, it is not necessary to provide the lid and the locking portion, and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view of a planting slope block according to the present invention.

FIG. 2 is a side view of a planting slope block according to the present invention.

FIG. 3 is a side view after the planting slope block of the present invention is constructed.

FIG. 4 is a plan view of another embodiment of a planting slope block according to the present invention.

FIG. 5 is a plan view of still another embodiment of the planting slope block according to the present invention.

FIG. 6 is a plan view of still another embodiment of the planting slope block according to the present invention when the lid is closed.

FIG. 7 is a sectional view taken along the line AA of FIG. 6;

FIG. 8 is another embodiment of the cross-sectional view taken along the line AA of FIG. 6;

FIG. 9 is a plan view of a conventional slope block for planting.

FIG. 10 is a side view of a conventional planting slope block.

FIG. 11 is a plan view of a conventional example after the construction of a planting slope block.

FIG. 12 is a plan view of another conventional slope block for planting.

FIG. 13 is a side view of another conventional plant slope block.

FIG. 14 is a side view after the construction of another conventional slope block for planting.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body part 2 Front side surface 3 Front wall part 4 Side wall part 5 Main body part upper surface 6 Main body lower surface 7 Engaging convex part 8 Engaging concave part 9 Depressed part 10 Arc-shaped side wall part 11 Water retention substance 12 Flange 13 Side concave part 14 Side part Water hole 15 Central water hole 16 Back quarry 17 Back buried concrete 17a Back buried concrete 18 Inclined ground 20 Foundation base 21 Step-shaped locking part 22 Tapered locking part 23 Lid K1 Front side space K2 Back side space

Claims (7)

[Claims] 1. A main body having a substantially rectangular cross section and a substantially flat front surface, a substantially flat front wall projecting upward from a lower end of the front surface, and a front wall. And a substantially triangular left and right side wall formed between the left and right ends of the main body and the front surface of the main body. The main body has an engaging convex portion or an engaging concave portion arranged as described above, and a concave portion which is located near a central portion of the main body portion and is formed by opening on an upper surface and a front surface thereof. A planting space formed by a space formed by a front surface, a front wall portion, left and right side wall portions of the portion, and the recessed portion. 2. The planting slope block according to claim 1, wherein the engaging projections or the engaging recesses are provided at positions approximately one-fourth from the left and right ends of the main body. 3. The engagement projection or the engagement recess has a front side surface 7a substantially vertical and a rear side surface 7b inclined rearward after the block is installed.
2. The planting slope block according to 2. 4. The planting slope block according to claim 1, wherein the planting space has a bottom surface having substantially the same depth. 5. The planting slope block according to claim 1, wherein the left and right side walls have a substantially arc-shaped outer periphery. 6. The planting slope block according to claim 1, wherein a water retention material is provided in the planting space. 7. The planting slope block according to claim 1, wherein a lid is provided at an upper opening of the recess.