Tree holders for slope planting work

Abstract

To provide a tree holder that has no risk of giving harmful effect to the natural environment and is excellent in workability in slope planting work.SOLUTION: A tree holder is formed by bending a paper-made board material having water resistance, and is composed of a top plate (2) that is approximately horizontal when placed on a slope (10), a bottom plate (3) that has a larger area than the top plate and is in contact with the ground, and side plates (4) that connect the top plate and the bottom plate and are inclined with respect to a vertical direction. The top plate is divided into multiple pieces, and when the pieces are upright, an opening is formed in an inner space surrounded by the top plate, the bottom plate, and the side plates, and the bottom plate has a communication opening between the inner space and a ground surface.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a tree holder used for holding trees to be planted on a slope in slope planting work. [Background technology]

[0002] In order to prevent erosion and weathering of slopes caused by rainwater, slope vegetation work, in which plants are allowed to grow on the slope and the surface layer is bound tightly by rhizomes, is widely adopted. In slope vegetation work, the following vegetation methods are known for introducing plants: sowing work, in which seeds are directly used; planting work, in which growing plants are used; and seedling installation spraying work, in which seedlings are installed and then seeds are sprayed.

[0003] Also known types of planting work include a method of digging planting holes in the slope and planting trees (hereinafter referred to as "planting hole type planting work"), and a method of setting up a woven fence, adding soil, and planting trees (hereinafter referred to as "woven fence type planting work"). [Prior art documents] [Non-patent literature]

[0004] [Non-Patent Document 1] Road Earthworks - Cutting and Slope Stabilization Guidelines (2009 Edition), Japan Road Association DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0005] Since slope planting work is carried out on a sloping surface and large machinery cannot be used, manual work is required, so it is preferable to make the materials brought in for the work as light as possible. Therefore, planting hole type planting work requires a lot of manual digging, which is a heavy burden on the local area. Also, depending on the condition of the slope where the planting is to be done to prevent slope erosion, it may not be possible to make planting holes, making planting hole type planting work inappropriate.

[0006] In contrast, with woven fence planting work, in which soil is added to the slope, there is no need to dig holes directly into the slope, and it can also be applied to slopes where it is not possible to make planting holes.

[0007] However, in the case of woven fence planting work, when logs were used as the materials for constructing the woven fence out of consideration for the scenery, etc., there were problems with workability. On the other hand, when lightweight materials made of synthetic resin were used out of consideration for workability, there were concerns about the adverse impact that artificial materials might have on the natural environment.

[0008] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a tree holder which is easy to work on in slope planting work and which does not have a negative impact on the natural environment. [Means for solving the problem]

[0009] The tree holder of the present invention is formed by folding a water-resistant paper board and is composed of a top plate that is approximately horizontal when placed on a slope, a bottom plate that has a larger area than the top plate and is in contact with the ground, and side plates that connect the top plate and the bottom plate and are inclined with respect to the vertical. The top plate is divided into a plurality of pieces, and when the pieces are in an upright position, an opening is formed in an inner space surrounded by the top plate, the bottom plate, and the side plates. The bottom plate also has a communication opening between the inner space and the ground surface.

[0010] The top plate may have a water intake for directing rainwater into the inner space. The water intake may be formed by folding the piece. Effect of the Invention

[0011] According to the tree holder of the present invention, the inner space surrounded by the top plate, bottom plate, and side plates is filled with soil and the tree is planted at the planting site, so that the tree can be held and grown on the slope that is the target of the planting work. In addition, since the bottom plate has a communication port between the inner space and the ground surface, the roots of the tree can take root in the natural ground. The water-resistant paper board material that is the material decomposes and disappears after the roots of the planted tree take root in the natural ground. Moreover, since the side plates connecting the top plate and bottom plate are inclined with respect to the vertical direction, the surface of the soil exposed after the side plates are decomposed and disappeared is also inclined with respect to the vertical direction, so that the soil remains stable without collapsing. Therefore, the tree can be held without adversely affecting the natural environment.

[0012] Furthermore, since the product is formed by folding paper boards, it is extremely easy to transport the materials to the site and to set them up there. In other words, the product has excellent workability when used in slope planting work. [Brief description of the drawings]

[0013] [Figure 1] 1 is a photograph in lieu of a drawing showing an installation state of an embodiment of a tree holder according to the present invention. [Diagram 2] 1 is a photograph showing a paper board material. [Diagram 3] This is a photograph in place of a drawing, showing the state before installation from the top plate side. [Figure 4] This is a photograph in lieu of a drawing, showing the state before installation from the bottom plate side. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] BEST MODE FOR CARRYING OUT THE DISCLOSURE With reference to Figs. 1 to 4, an embodiment of a tree holder according to the present invention will be described. The tree holder 1 of this embodiment is formed by folding a water-resistant paper board, and is composed of a top plate 2 that is approximately horizontal when placed on the slope 10, a bottom plate 3 that has a larger area than the top plate 2 and is in contact with the ground, and side plates 4 that connect the top plate 2 and bottom plate 3 and are inclined with respect to the vertical direction.

[0015] The top plate 2 and the bottom plate 3 form an isosceles trapezoid and are connected in a manner that they share a common long base. A rectangular side plate 4 is disposed between the short top sides of the top plate 2 and the bottom plate 3, and a set of triangular side plates 4 is disposed between the hypotenuses of the top plate 2 and the bottom plate 3. In the following description, the term "rectangular side plate 4a" refers to only the rectangular side plate 4, and the term "triangular side plate 4b" refers to the triangular side plate 4, and the term "side plate 4" includes both.

[0016] The paper board material forming the tree holder 1 is made of waterproofed cardboard, and is made up of a line-symmetrical octagonal first member 20 and an isosceles trapezoidal second member 30. In Fig. 2, which shows the first member 20 and the second member 30, the dashed lines indicate the parts that are bent when forming the three-dimensional tree holder 1.

[0017] The lengths of the two sides of the first member 20 that intersect with the axis of symmetry X are different, and a portion 21 including the longer side of the two sides that intersect with the axis of symmetry X forms the top plate 2, while a portion 22 including the shorter side of the two sides that intersect with the axis of symmetry X forms the rectangular side plate 4a. In addition, a pair of congruent portions 23 located on either side of the portion 21 that forms the top plate 2 and the portion 22 that forms the rectangular side plate 4a form a triangular side plate 4b.

[0018] In addition, a notch 24 is provided in the portion 21 forming the top plate 2, which extends from the edge along the symmetric axis X, dividing the plate into two pieces. When the plate is placed on a slope and these two pieces are erected, an opening is formed in the inner space (hereinafter referred to as the "internal space") surrounded by the top plate 2, bottom plate 3, and side plate 4.

[0019] The second member 30 forms the bottom plate 3. A hole 31 is formed in the second member 30 to function as a communication port between the inner space and the ground surface when the second member 30 is installed on a slope.

[0020] The first member 20 and the second member 30 are brought to the planting site in the form of flat plates and bent on site to form the tree holder 1 in a three-dimensional shape.

[0021] The three-dimensional tree holder 1 can be used by placing it on a slope 10 with the bottom plate 3 on the ground and the top plate 2 in a generally horizontal orientation, and by fixing it to the slope 10 via the fixing device 5. It is preferable that the top plate 2 be horizontal, taking into consideration the efficiency of the tree planting work and the growing environment of the planted trees, but it does not have to be strictly horizontal. It is sufficient that it is roughly horizontal and can be visually confirmed.

[0022] Known products can be used for the fasteners 5 that secure the tree holder 1 to the slope. In this embodiment, large-head nails are used, and the top plate 2 is fixed at four points on the edge including the long bottom side, and the bottom plate 3 is fixed at two points on the edge including the short top side. The jigs and fastening parts used may be appropriate depending on the site conditions, but it is preferable to seal any gaps that are formed when the fasteners 5 are inserted into the tree holder 1 and that communicate with the internal space. In this embodiment, the gaps are sealed with weed control pads attached to the large-head nails.

[0023] In this embodiment, the side plate 4 is surrounded by wires 6, both ends of which are fixed to the ground by anchor pins, for reinforcement. However, reinforcement may be performed as necessary, taking into consideration the site conditions, etc.

[0024] The tree to be planted is planted in the internal space of the tree holder 1. When planting, first fill about half the capacity of the internal space with culture soil. Next, the root ball of the tree to be planted is placed in, and the internal space is further filled with culture soil. These operations can be performed using the opening that is formed when one part of the top plate 2 is raised.

[0025] After the filling of the internal space with the soil is completed, one part of the top plate 2 is tilted down to close the notch 24, and the opening of the internal space is closed, completing the planting work of the tree. At this time, it is preferable that the notch 24 is closed in a state in which undesired grass cannot grow, but it is also necessary that the notch is in a state in which it can take in the moisture necessary for the growth of the tree.

[0026] Therefore, in this embodiment, a water intake channel is provided to guide rainwater into the internal space when the tree is received. The water intake channel can be formed by folding one part of the top plate 2 further toward the bottom plate 3 from the horizontal state where the opening is closed. Rainwater that has collected in the water channel is guided into the internal space through the water intake 25 provided at the end of the notch 24. In addition, because the water intake 25 is oriented approximately horizontally, undesired overgrowth of grass is suppressed.

[0027] In this embodiment, as described above, cardboard with a waterproof surface is used as the material for the paper board that forms the tree holder 1, but other materials, such as cardboard with a waterproof surface, may be used as long as they maintain their shape until the tree to be planted is attached to the adhesive surface and then decompose and disappear. [Explanation of symbols]

[0028] 1 Tree holder 2 Top plate 3 Bottom plate 4 Side Panel 4a rectangular side plate 4b Triangular side plate 5 Fixtures 6 wire rod 10 Slope 20 First member 21 Top plate forming part 22 Part forming rectangular side panel 23 Parts forming triangular side panels 24 Cut 25 Water Intake 30 Second member 31 Holes that function as communication between the inner space and the ground surface X axis of symmetry

Claims

1. A water-resistant paper board is folded to form the sheet. A top plate that is approximately horizontal when installed on a slope; A bottom plate having a larger area than the top plate and in contact with the ground; A side plate that connects the top plate and the bottom plate and is inclined with respect to the vertical direction, The top plate is divided into a plurality of pieces, and when the pieces are in an upright position, an opening of an inner space surrounded by the top plate, the bottom plate, and the side plates is formed; A tree holder characterized in that the bottom plate has a communication opening between the inner space and the ground surface.

2. The tree holder according to claim 1 , wherein the top plate has a water intake channel for directing rainwater into the internal space.

3. 3. The tree holder according to claim 2, wherein the water intake channel is formed by folding the piece.

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