JP2005095048A - Supporter for supporting tree, and method for supporting tree using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for supporting trees using a supporter, comprising putting a root ball of a tree under the ground; and to provide a supporter for supporting trees supporting the root part of the tree or the root ball when supporting the trees so as to prevent influence such as biting into the tree as much as possible without losing the tightening force on the root part of the tree, and so as not to leave offcuts of the supporter as few as possible without being affected from weather conditions such as temperature or an amount of rain fall. <P>SOLUTION: The supporter for supporting trees is so designed as to support trees when supporting the trees. In the supporter, a supporter body comprises biodegradable synthetic fibers. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention is a support tool in the support construction of the tree, and a support construction method of the tree using the support tool, more specifically, a method of supporting the tree mainly by burying the root pot of the tree in the ground,
It is related with the support tool which supports the root part and root pot of the tree in the case of the support construction.

In general, this kind of tree support construction method is to store a root pot in a planting hole previously formed on the ground, place a support around the root of the tree, and place a root such as a wire or belt on this support. The pot support is connected and hung around the root pot, and the root pot support is hooked on the anchor driven into the bottom wall of the planting hole to generate tension in the root pot support. It is a method of fixing and fixing trees as a whole.

In such a tree support construction, the tree is supported by a support device for the root of the tree and a support device for the root pot connected to the support for the root portion, and is arranged around the root portion. The position of the supporting tool is the fulcrum of the whole tree support structure.

Therefore, until the end of the predetermined period when the tree grows, especially at the beginning of construction, if the tightening state of both supports is not sufficient, when the tilting force occurs in the tree, the root part of the tree that is the fulcrum of the support structure is As a result of the movement of the stress, there is a possibility that even the tension member is loosened, and the function as a structure for the entire support construction is impaired. For this reason, both support tools need to be tightened in a desired tightening state from the beginning of construction until a lapse of a predetermined period during which trees grow.

On the other hand, in the state where the roots are fully grown with the roots elongated, the trees are self-supporting and do not incline inadvertently even if both of the above-mentioned supports are not present. Therefore, the support tool may be removed from the root part or root pot of the tree when the tree is sufficiently grown, but if the root pot is buried in the soil after the support work, the support tool is removed from the root part of the tree. It is difficult to remove it from the root pot. In this case, it is originally desirable that the support tool does not remain in the soil, and from this viewpoint, the support tool is desirably decomposed in the soil.

Therefore, in view of such a point, in order to solve this, an invention such as the following Patent Document 1 focusing on disassembling the support after a certain period of time and releasing the tightened state has been made.

The present invention is directed to a sling formed by joining and integrating auxiliary materials formed by a self-degradable resin that is hydrolyzed by wet heat along the longitudinal direction of a sling body formed of natural fibers. is there.

The invention according to Patent Document 1 is configured to form the sling body with natural fibers. As described in Patent Document 1, when the whole is natural fibers, It is described that the period during which the strength is reduced is 30 to 40 days, and is a short period of time. Also, if the sling (supporting tool) rots before the tree is fully rooted, It is also described that the original significance of using a support device for tree planting is lost.

In view of such a point, in Patent Document 1, the auxiliary material formed of the self-decomposing resin that is hydrolyzed and decomposed by wet heat as described above is combined and integrated along the longitudinal direction of the sling body. It was.

By the way, according to this Patent Document 1, it is described that “a few years after planting until a tree grows up and can withstand wind pressure due to its own roots.” For example, polyester-based polyurethane is selected as a material for the self-decomposable resin by setting 5 to 6 years as a time when it can be decomposed.
Patent No. 3035661

However, “self-degradable resin that decomposes by hydrolyzing with wet heat” constituting the support (sling) used in the invention as in Patent Document 1 is described in “Patent Document 1”. It is known that when it is left wet for a long time in a high temperature and high humidity atmosphere, the surface becomes tattered, and unless it is an ultra-thin material of micron unit, its decomposition occurs in a span of 5 years or more. As is clear from the statement, "Unless you are under special conditions,
It is of a material that does not decompose.

In other words, hydrolysis occurs when water is present at a certain temperature, but even in the summer when the surface temperature is about 30 ° C or higher, the temperature in the soil is about 13-15 ° C, and the water is raining. It must depend on natural forces such as. In this case, the decomposition time varies depending on weather conditions such as temperature and rainfall.

Furthermore, polyester polyurethane is a synthetic resin that does not inherently decompose,
Even if the support (sling) is divided by hydrolysis and the root of the tree or the root pot is released, it is not completely decomposed in the soil to the extent that the original shape is not retained. The sling remains.

The present invention has been made to solve such problems, and can prevent the influence of biting into the tree as much as possible without impairing the tightening force of the root of the tree, and weather such as temperature and rainfall. It is an object to prevent the remaining pieces of the support from remaining as much as possible without depending on the conditions.

In order to solve such problems, the present invention was made as a support tool in a tree support construction, and a tree support construction method using the support tool, and features as a support tool in a tree support construction Is a support for supporting the tree in the support construction of the tree, and is that the support body is composed of biodegradable synthetic fibers.

In addition, a feature as a support construction method of a tree is a support construction method of a tree in which a tree is supported by supporting the root portion and root pot of a tree with a support tool. In order to release the tightened state of the support, at least one of the root support or the root pot support of the tree is composed of a biodegradable synthetic fiber.

As described above, the present invention is a support tool for supporting the root portion of a tree when supporting and constructing a tree, and the support tool body includes a plurality of single yarns made of biodegradable synthetic fibers. Therefore, even if the root of the tree gradually thickens over time, the winding state of the support body will be released in a predetermined number of years, and thus the tree grows and the tree Even if the diameter of the tree becomes thick, it does not inadvertently bite into the root of the tree, and various problems due to the biting can be solved.
That is, it is possible to prevent tree growth failure due to the biting of the support tool, and further eliminate the need for the conventional complicated work of cutting the support tool according to the growth of the tree in order to prevent the biting of the support tool. is there.

As the biodegradable synthetic fiber used in the present invention, biodegradable synthetic fibers obtained from aliphatic polyesters typified by polyalkylene dicarboxylates, polylactic acid, and poly (β-hydroxyalkanoates) are suitable. Other than that, it may be a biodegradable synthetic fiber obtained from an aliphatic polyester containing some aromatic components such as polybutylene succinate and terephthalate having biodegradability. Is not to be done.

The aliphatic polyester is particularly preferably an aliphatic polyester having a melt index of 10 g / min or less and a melting point of 70 ° C. or higher measured at 190 ° C. and a load of 2.16 kg.
Specific examples of the polyalkylene dicarboxylates include, but are not limited to, polybutylene succinate, polyethylene succinate, polybutylene succinate adipate, and the like. Examples of the polylactic acid include, but are not limited to, poly-L-lactic acid, poly-D-lactic acid, and a copolymer polymer having a mixture of L-lactic acid / D-lactic acid / racemic lactic acid as monomers. It is not a thing.

Furthermore, examples of the poly (β-hydroxyalkanoates) include poly-3-hydroxybutyrate, poly-3-hydroxyvalerate, and poly-3-hydroxybutyrate / valerate, but are not limited thereto. Is not to be done.
The polymer used in the present invention includes, for example, pigments, dyes, light-proofing agents, ultraviolet absorbers,
Various additives such as an antioxidant, a crystallization inhibitor, and a plasticizer can be added in the polymerization step, after the polymerization, or immediately before spinning, as long as the target performance is not impaired.

The biodegradable synthetic fibers are preferably configured so as to be arranged in a direction in which tension is applied. Thereby, there is an advantage that the strength utilization rate is improved and it is not inadvertently divided by the tension.

The biodegradable synthetic fiber preferably has a thickness of 100 dtex to 3000 dtex. If the thickness is less than 100 dtex, the fiber becomes too thin and the process such as spinning becomes complicated, and the manufacturing cost increases accordingly. On the other hand, if the thickness exceeds 3000 dtex, the flexibility is increased. It is because it may be damaged and it may become difficult to attach to the root part of the tree or the root pot.
Therefore, when the thickness of the biodegradable synthetic fiber is in the range of 100 dtex to 3000 dtex, there is an effect that the manufacturing cost is not increased and the flexibility is not impaired and the attachment is not difficult. is there.

Embodiments of the present invention will be described below with reference to the drawings.
As an example, the structure of the support 1 in the tree support construction, more specifically, the structure of the support at the root of the tree will be described. The support tool main body 1a as shown in FIG. It is formed and composed of a plurality of single yarns made of biodegradable synthetic fibers.

In this example, a biodegradable synthetic fiber made of polybutylene succinate was used. Also,
The thickness of the biodegradable synthetic fiber was 1300 dtex in this example. Furthermore, the tensile breaking strength of the single yarn of the biodegradable synthetic fiber was 6.67 kg.

A single yarn made of this biodegradable synthetic fiber is produced as follows. That is, polybutylene succinate is melted with an extruder-type spinning machine, spun through a die, and then cooled in a water bath. Next, the undrawn yarn is drawn in a first-stage drawing bath of warm water, and then drawn in a second-stage dry heat bath to obtain a single yarn made of polybutylene succinate.

Further, the plurality of single yarns are configured to be aligned in the longitudinal direction, which is the direction in which the tension is applied. In this embodiment, as shown in FIG. 2, three single yarns 23,... Are aligned to form a composite yarn, and four composite yarns 24a, 24b, 24c, 24d are prepared as shown in FIG. To do. And the four yarns 24a, 24
b, 24c and 24d are twisted together with a Z twist as shown in FIG. Here, Z-twisting means twisting in a diagonally upward direction as shown in FIG. Two yarns 25a and 25b consisting of a total of 12 single yarns twisted in this way are prepared, and the two yarns 25a and 25b are twisted into S-twist as shown in FIG. 26 is formed. Here, the S twist means twisting in a diagonally upward direction as shown in FIG.
In this case, when the yarns 25a, 25b are constituted by twisting the combined yarns 24a, 24b, 24c, 24d, the yarns 25a, 25b are twisted by Z-twisting, and when the yarns 25a, 25b are twisted to constitute the warp yarn 26, Since the support body 1a is formed in the shape of a plate belt, the support body 1a is formed by the reverse S twist.
The risk of twisting is eliminated.

Further, as shown in FIG. 5, 18 such warp yarns 26 are arranged side by side, and the warp yarns 26 arranged side by side are arranged.
By weaving the weft yarn (not shown), the plate belt-like support body 1a is configured. Here, 9 out of the 18 warp yarns 26 are two yarns 25a, 25b twisted by Z-twisting, and the other 9 warp yarns 26 are 2 yarns 25a, 25b made of S. It is twisted by twisting. The Z-twisted warp yarns 26 and the S-twisted warp yarns 26 are woven with the weft yarns in a state of being alternately arranged one by one as shown in FIG.
In this way, since the 18 warp yarns 26 in total are alternately arranged with S-twisted yarns and Z-twisted yarns, the support main body constituted by alternately arranging these S-twisted yarns and Z-twisted warp yarns The balance of the twisted state of 1a is maintained, and there is no risk of twisting, bending, distortion, warping or the like occurring in the support body 1a, and as a result, deformation such as the support body 1a becoming a wavy state may occur. This is preferably prevented.
And, the plate-belt-shaped support body 1a is composed of 18 warp threads 26 arranged side by side.
In the end, it is composed of a total of 432 single fibers of biodegradable synthetic fibers.
In addition, as a weft, a polyamide-type synthetic fiber, cotton, etc. can be used, for example.

Reference numeral 2 denotes an attachment having a function as a buckle for fixing both ends of the support body 1a and adjusting the length of the belt, and is formed in the attachment 2 as shown in FIG. The fastening tool main body 1a is fixed by being inserted into the holes 3,.

The tree root support 1 having the above-described configuration is used by being installed in a wound state at the tree root when the tree is supported and constructed.

Next, the case where the tree root support 1 is installed in a wound state on the tree base to be supported and constructed will be described in detail together with a tree support construction method as an example.

First, as shown in FIG. 7, the soil 8 is sprayed on the bottom surface 7 of the pre-formed planting hole 6, and the root pot placement body 9 is placed on the top thereof as shown in FIG. .

Next, the four slide rods 10,... Of the root pot mounting body 9 as described above are slid outwardly to expand the support main body 11, and on the upper surface of the distal end portion of the slide rod 10. .. Are fixed to the inner wall surface 13 of the planting hole 6 as shown in FIGS. After the driving rods 12,... Are driven in this way and the root pot placement body 9 is fixed, the root pot 14 is placed on the root pot placement body 9 as shown in FIG. .

Next, as shown in FIG. 12, a belt-like (plate-like) stretch is placed on the root portion 16 of the tree 15 and the mounting body body 11 (more specifically, the root portion of the slide rod 10) just below the root pot 14. The member 17 is hung around. The support member 1 is for supporting the root portion 16 of the tree 15, while the tension member 17 is a support member for supporting the root pot. And it is comprised with the polybutylene succinate which is a biodegradable synthetic fiber similarly to the support tool 1 of the said root part 16. As shown in FIG.

Four tensioning members 17 are installed on the support 1 and the mounting body main body 11 (more specifically, the root portion of the slide rod 10) one by one. At this time, as shown in FIGS. 11 and 12, a protective pad 18 is attached to the shoulder of the root pot 14 in order to protect the root pot 14 from biting the tension member 17.

Next, when connecting the root portion 16 of the tree 15 and the tension member 17, as shown in FIGS. 11 and 12, the support 1 is wound around the root portion 16 of the tree 15. The tension member 17 is hooked on the support 1.
In this case, the support 1 is placed on the upper surface of the root pot at a predetermined interval so as not to directly contact the root portion 16 of the tree 15. Accordingly, the support 1 is arranged around the root portion 16 of the tree 15 at a predetermined interval rather than being wound around the root portion 16 of the tree 15.

Thereafter, tension is applied to the tension member 17 by the winch 20. The root pot 14 is supported by the tension.
In this case, since the support main body 1a is formed in a plate belt shape, the work of binding the end of the support main body 1a can be easily performed.

After supporting the root portion 16 of the tree 15 as described above, the support construction of the tree is completed by filling the planting hole 6 with soil or the like.

The root of the constructed tree gradually increases with the passage of time, so that the support 1 is wound in contact with the root 16 of the tree 15, but the support body 1a is Since the biodegradable synthetic fiber which is a flexible material, more specifically, a single biodegradable synthetic fiber made of polybutylene succinate is combined, the support 1 is a tree. Don't inadvertently bite into.

As the years elapse, the root portion 16 of the tree 15 becomes thicker and comes into contact with the support tool 1 and cannot respond to the tightening force, but the support tool body 1a is a biodegradable synthetic fiber. Since it is composed of butylene succinate, even if the diameter of the tree increases with the passage of a predetermined year and month, the influence of biting into the root portion 16 of the tree 15 and the like can be remarkably reduced.

This will be described in more detail. By constructing the support 1 with polybutylene succinate, which is a biodegradable synthetic fiber, when such support 1 and the tension belt 17 are embedded in the soil, The support 1 is gradually deteriorated and decomposed by microorganisms in the soil.

Therefore, since the support tool main body 1a gradually deteriorates, the biting of the support tool 1 into the root portion 16 of the tree 15 is reduced as described above. The deteriorated support tool 1 is completely disassembled after a predetermined number of years have elapsed after the construction of the tree. In addition, when the root of the tree grows, the tree is in a state where it can stand on its own. Therefore, even if the support tool 1 is not provided, the support construction of the tree is not affected.

As described above, in this embodiment, the roots of the tree grow when the support 1 is disassembled. Therefore, the tightening force of the support 1 does not affect the root of the tree and the tightening force is reduced. It can also be maintained.

On the other hand, in this embodiment, the tension member 17 is also composed of polybutylene succinate, which is a biodegradable synthetic fiber, so that the tension member 17 also deteriorates and degrades over time, thereby The tightening state of the root pot by the tension member 17 is released.

In this example, polyethylene succinate was used as the biodegradable synthetic fiber constituting the support 1 and the tension member 17. Also in this embodiment, the support tool 1 and the tension member after a predetermined number of years have passed.
17 was successfully decomposed. Since the structure of the other support tool 1 is the same as that of the first embodiment, the description thereof is omitted.

In this example, polybutylene succinate adipate was used as the biodegradable synthetic fiber constituting the support 1 and the tension member 17. Also in this embodiment, the support tool 1 after a predetermined number of years has elapsed.
In addition, the tension member 17 could be suitably disassembled. Since the structure of the other support tool 1 is the same as that of the first embodiment, the description thereof is omitted.

In this example, polylactic acid was used as the biodegradable synthetic fiber constituting the support 1 and the tension member 17. Also in this example, the support tool 1 and the tension member 17 could be suitably disassembled after a predetermined number of years. Since the structure of the other support tool 1 is the same as that of the first embodiment, the description thereof is omitted.

In this embodiment, the arrangement of the support 1 and the tension member 17 is changed. In each of the above embodiments,
The support 1 is arranged around the root of the tree, and the tensioning member 17 is connected to the support 1, but in this embodiment, the tensioning member 17 is connected to the root of the tree as shown in FIG. It is also possible to wrap around and support the root portion of the tree with portions 17a and 17b where the extending member 17 intersects.

Even in this case, if the trunk of the tree becomes thicker as the tree grows, the tree is
That is, the parts 17 a and 17 b intersect with each other, and are fastened and supported at those parts. In this case, the tension member 17 has the function of a support tool.
In FIG. 13, 18 indicates a shoulder pad, and 22 indicates an angle driven into the ground along the circumference of the root pot 14.

In the present embodiment, the tension member 17 having the function of the support is made of biodegradable synthetic fiber (polybutylene succinate or the like). Therefore, when the tree grows after a lapse of a predetermined period, the root portion of the tree is supported by the intersecting portions 17a and 17b, but the tension member 17 is deteriorated and decomposed. I will not bite into.

Then, the tension member 17 is deteriorated and disassembled, so that the winding state of the support is released and the support state of the root pot is also released.

In this embodiment, the arrangement state of the tension member 17 is replaced with that of the fifth embodiment. That is, in the present embodiment, as shown in FIG. 14, the tension member 17 is bridged between the adjacent angles 22 and 22, and the root pot is
14 is fixed.

Also in this example, the tension member 17 having the function of the support is composed of biodegradable synthetic fibers (polybutylene succinate, etc.), so that the tree grew after a predetermined period of time. While the root of the tree is sometimes supported, the tensioning member 17 is deteriorated and decomposed, so that it does not bite into the root of the tree.

In the present embodiment, the form of the tension member 17 is a wire shape as shown in FIG. 15 instead of the belt-shaped members of the above embodiments. Also in the present embodiment, the support 1 is arranged at the root portion 16 of the tree 15 as in the first embodiment. In this embodiment, the support 1 has a plurality of stops 19,
Are attached, and the tension member 17 is hooked on the stoppers 19,. In this example,
A protective pad 18 is attached to the shoulder of the root pot 14 to protect the root pot 14 from biting the tension belt 17.

Also in this example, the support 1 is a biodegradable synthetic fiber (polybutylene succinate or the like).
Since the root part of the tree is supported when the tree grows after a lapse of a predetermined period, the support tool 1 is degraded and decomposed, so that it can bite into the root part of the tree. There is no.

In this embodiment, as a means for supporting and fixing a tree, the root pot mounting body 9 as in each of the above embodiments.
Instead, an anchor 21 is used as shown in FIG. Further, as the tension member 17, a wire-like member similar to that in Example 8 is used.

Since the root pot mounting body 9 is not used, the tree is supported and fixed by hooking the tension member 17 on the anchor 21 driven into the bottom surface 7 of the planting hole 6 as shown in FIG. Become.

Also in this example, the support 1 is a biodegradable synthetic fiber (polybutylene succinate or the like).
Since the root part of the tree is supported when the tree grows after a lapse of a predetermined period, the support tool 1 is degraded and decomposed, so that it can bite into the root part of the tree. There is no.

In each of the above-mentioned examples, polybutylene succinate, polyethylene succinate, polybutylene succinate adipate, polylactic acid, etc. were used as biodegradable synthetic fibers, but the components are limited to this. is not. For example, polycaprolactone, polyhydroxybutyrate and the like can be used.

In the above embodiment, the support body 1a is composed of only biodegradable fibers.
In addition to biodegradable synthetic fibers, natural fibers such as cotton, jute, cocoon, paper, wool, silk, leather, wood, or palm can be blended. Alternatively, the support body 1a can be configured by twisting biodegradable synthetic fibers and natural fibers.

  Even in this case, the natural fiber is aligned in the same direction as the biodegradable synthetic fiber.

In addition, in order to degrade corresponding to the growing years of trees, the thickness and thickness of the biodegradable synthetic fiber used for the support body 1a are adjusted, or the number of single yarns is adjusted, etc. The time when the winding state is released can be adjusted. When the yarn becomes smaller due to the relationship between the thickness of the biodegradable synthetic fiber and the speed of biodegradability, the surface area of the yarn increases, the degradation area by microorganisms increases, and the time until degradation is shortened. On the other hand, if the area is too thick, the area is small, so the decomposition rate is low, the time until cutting is long, and the purpose of dividing by a predetermined number of years cannot be achieved.

Furthermore, in the above embodiment, since the support tool body 1a is formed in a plate belt shape, the above-described preferable effect is obtained, but the shape of the support tool body 1a is not limited to this, for example, a bar shape or It is also possible to form a chain or a net.

Further, the thin linear bodies may be arranged side by side like a comb, and the whole may be formed into a substantially harp shape (instrument harp). By configuring so that is divided, the whole can be divided.

When the support main body 1a is made of a degradable material, the whole need not be made of a degradable material, and only a part may be made of a degradable material.

Further, in this embodiment, the driving rod 12 is driven into the inner wall surface 13 of the planting hole 4, but it is not always necessary to drive in such a manner. For example, a member that presses the inner wall surface 13 is attached to the slide rod 10, and the member The inner wall surface 13 may be simply pressed.

Furthermore, in the above embodiment, the tree is supported and fixed by hanging the tension member 17 around the root pot 14,
Without using such a belt-like or wire-like stringing material, for example, a rod-shaped body to which a pressing piece is attached is driven into the ground along the root pot and the root pot 14 is attached with a pressing piece at the top of the rod-shaped body. It is also possible to press and fix it. Therefore, the support and fixing method of trees is not questioned.

Furthermore, in the above embodiment, not only the support tool 1 but also the tension member 17 is made of biodegradable synthetic fiber, so that both the support tool 1 and the tension member 17 are decomposed in the soil after the tree grows. However, it is not an essential condition for the present invention that both are made of biodegradable fibers. For example, only the support 1 is made of biodegradable synthetic fibers, and the tension member 17 can also be composed of other materials. It is also possible to configure only the tension member 17 with biodegradable fibers.

Furthermore, in the above embodiment, three single yarns 23,... Are drawn together to form a combined yarn, and yarns 25a, 25b formed by twisting four combined yarns 24a, 24b, 24c, 24d are used. The warp yarn 26 is formed by twisting two more, but the number of single yarns 23, the number of combined yarns 24a,..., The number of yarns 25a, etc. are not limited to the embodiment.
However, in order to easily twist the combined yarn, it is desirable that the combined yarn is composed of about three single yarns, and about four combined yarns 24a,. Is preferably configured.
In the above embodiment, the warp yarn 26 is formed by twisting the two yarns 25a and 25b, and the support body 1a is formed by arranging 18 warp yarns 26 side by side. It is not limited to an example, for example, it is also possible to construct the support body 1a by twisting four yarns 25a,. However, when the warp 26 is formed by twisting four yarns 25a,..., The warp 26 is stiffer than when the warp 26 is formed by twisting two yarns 25a, 25b. As in the embodiment, it is preferable that the warp thread 26 is composed of two threads 25a and 25b, and the support body 1a is composed of 18 warp threads 26 arranged side by side. In addition, the number of warps 26 to be lined up is not limited to 18 in the embodiment.
Further, in the above embodiment, the S-twisted warp yarns and the Z-twisted warp yarns are alternately arranged one by one. However, the present invention is not limited to this, and two yarns may be alternately arranged. However, in order to prevent the possibility of twisting, bending, distortion, warping, etc. occurring in the support body 1a, and to maintain the balance of the twisted state of the support body 1a, the support body 1a must be arranged alternately. Is more desirable.
In addition, in order to prevent the support body 1a from being twisted, bent, distorted, warped, etc., it is necessary to alternately arrange warp yarns of S twist and warp yarns of Z twist. It is not an essential condition for the present invention to alternately arrange the twisted warp yarns and the Z twist warp yarns.

Furthermore, in the above embodiment, the twists of the combined yarns 24a, 24b, 24c, 24d are Z-twisted, and the yarns 25a,. The twist of 24a, ... is S twist,
It is also possible to make the twist of the yarns 25a,. It is not essential for the present invention to reverse the twist direction of the combined yarns 24a,... And the twist direction of the yarns 25a,. In the case of twisting in the same direction, if the support body 1a is formed in a plate belt shape, there is a risk of twisting, so the twist direction of the combined yarns 24a, as in the above embodiment And the yarns 25a,... Are preferably formed in the opposite direction to the twisting direction.
Furthermore, the material of the weft is not limited to the polyamide-based synthetic fiber or cotton of the above embodiment, and other fibers can be used. Also, wefts can be composed of biodegradable synthetic fibers in the same way as warp yarns, but if the warp and weft yarns are both composed of biodegradable synthetic fibers, the strength of the support body 1a is slightly weakened. From the viewpoint of reducing the manufacturing cost of the support body 1a, it is desirable to use polyamide synthetic fibers, cotton, or the like that has versatility and predetermined strength.

The support in the tree support construction of the present invention, and the tree support construction method using the support, the support of trees to be planted in parks, pavements, exhibition halls, and other places where urban greening is required Can be widely applied to construction.

The support tool as one Example is shown, (a) is a schematic perspective view, (b) is an AA line expanded sectional view of (a). The schematic front view which shows the single yarn and synthetic yarn which comprise a support tool main body. The schematic front view of the state which twisted the combined yarn and comprised the yarn for warp formation. The schematic front view which shows warp. FIG. The principal part expanded sectional view which shows the fastening part of a support tool main body. The partial cross section side view of the process of mounting the mounting body for root pots on the bottom wall surface of a planting hole. The partial cross section top view of the process of mounting the mounting body for root pots on the bottom wall surface of a planting hole. The partial cross section side view of the process which nailed the driving rod into the side wall surface. The partial cross-sectional top view of the process which driven the driving rod into the side wall surface. The partial cross section side view of the state which mounted the root pot on the mounting body for root pots. The partial cross section top view of the state which mounted the root pot on the mounting body for root pots. The schematic plan view of the other Example of the support construction method of a tree. The schematic plan view of the other Example of the support construction method of a tree. The partial cross section schematic plan view of the other Example of the support construction method of a tree. The partial cross section schematic perspective view of the other Example of the support construction method of a tree.

Explanation of symbols

1 ... support 1a ... support body
17… Tensioning member

Claims (8)

  A support tool for supporting a tree in the support work of a tree, wherein the support tool main body 1a is composed of a biodegradable synthetic fiber.   The support in the tree support construction according to claim 1, wherein the biodegradable synthetic fibers are arranged in a direction in which tension is applied.   The support in the tree support construction according to claim 1 or 2, wherein the single yarn of the biodegradable synthetic fiber has a thickness of 100 dtex to 3000 dtex.   The support in the tree support construction according to any one of claims 1 to 3, wherein the biodegradable synthetic fiber is made of aliphatic polyester.   The support in the tree support construction according to claim 4, wherein the aliphatic polyester is at least one selected from polyalkylene dicarboxylates, polylactic acid and poly (β-hydroxyalkanoates).   The support in the tree support construction according to claim 5, wherein the aliphatic polyester is at least one polyalkylene dicarboxylate having a melting point of 70 ° C or higher.   The support in the tree support construction according to claim 5 or 6, wherein the polyalkylene dicarboxylate is at least one selected from polybutylene succinate, polyethylene succinate and polybutylene succinate adipate.   In the tree support construction method of supporting the tree by supporting the tree root part and root pot with a support tool, so that the tightening state of the support tool for the root part or root pot of the tree can be released during the growth of the tree, A method for supporting and supporting a tree, characterized in that at least one of a root support or a root pot support of the tree is composed of a biodegradable synthetic fiber.