JP2018126063A - Method for treating tree roots and covering guiding member used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique for properly treating extended roots and suppressing extension of the roots to the surface of the ground layer during subsequent growth in trees that have already been planted and grown.SOLUTION: A covering member 1 is positioned in the vicinity of roughly the front face of a root that has been cut and is used to cover the root. The covering member 1 is used in a state of being inclined forward toward the root that has been cut. The covering member 1 is made of a concave member formed by bending a substantially rectangular plate body 1a to the front side around a substantially central longitudinal axis to a certain extent. A plurality of slit grooves 1b are provided in the recessed portion (the surface facing the root) of the covering member 1. The slit grooves 1b have a substantially semicircular cross section and have a certain length along the longitudinal axis direction. By using the covering member 1 with such a configuration, it is possible for the roots extended after cutting to hit the covering member 1 to extend in the underground direction and to suppress the extension of the roots to the surface of the ground layer.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a method for treating roots in a tree and a covering member used therefor. More specifically, the present invention is suitable for treating the root appropriately when it becomes a problem, such as cracking on the surface of the formation, because it grows after planting and the root extends near the formation surface. The present invention relates to a root treatment method aimed at preventing the extension of roots to the surface of a formation and a covering member used therefor.

  Trees are planted not only in mountain forests but also in urban areas, such as roads and parks, and play a role in calming people.

However, in particular, trees planted in urban areas have become a problem in recent years.
In other words, after planting, the roots of the grown tree extend near the surface of the formation, resulting in cracks and bumps on the road surface, and pedestrians hooking on the roots and cracks. There is a risk that. Under such circumstances, various techniques have been developed for the purpose of preventing cracks and bumps on the surface of the formation (Patent Documents 1 and 2).

JP 2004-166861 A JP 2012-170341 A

Patent Document 1 discloses an invention related to a method for suppressing the extension of tree roots in an uplift direction and a repellent sheet material used therefor, and Patent Document 2 discloses an invention related to a method for preventing root lift using curbstones and paving stones. It is disclosed.
These prior arts are useful in that it is possible to suppress the extension of roots near the surface of the stratum by performing treatment at the time of tree planting. However, these prior arts have a problem in that no effect can be obtained even if they are applied when the root has already extended to the surface of the formation.

  Currently, it is an urgent issue that should be solved how to deal with roots in already grown and grown trees in various areas, especially in urban areas. Development is strongly desired.

  Against the background of the above circumstances, in the present invention, in an already planted and grown tree, the elongated root is appropriately treated, and in subsequent growth, the root is elongated or rooted (hereinafter referred to as “extension etc.”). The challenge is to develop technology for deterring (abbreviated).

  The inventor, based on years of experience and wisdom as a tree doctor, has completed the invention by developing methods and members that properly handle roots and promote root extension into the ground. .

The present invention has the following configuration.
The first configuration of the present invention is a root cutting step of cutting a root extended on the formation surface so that the cut surface faces obliquely downward,
After cutting the root, a covering member installation step of installing a covering member that covers the root in the vicinity of the front side of the root; and
A root treatment method characterized by comprising:

A second configuration of the present invention is the root treatment method according to the first configuration, wherein the root cutting angle is 100 to 170 degrees with respect to the formation surface.
A third configuration of the present invention is the radical treatment method according to the first or second configuration, wherein the covering member is a concave member curved to a certain degree.
A fourth configuration of the present invention is the root treatment method according to the first to third configurations, wherein a slit groove is provided on a surface of the covering member facing the root.
A fifth configuration of the present invention is the radical treatment method according to the first to fourth configurations, wherein the covering member is made of a ceramic material.

The sixth configuration of the present invention further includes a water injection step of injecting water containing an activator into the soil near the lower portion of the root, according to the first to fifth configurations. It is a treatment method.
According to a seventh configuration of the present invention, there is further provided a microorganism-containing member burying step of digging up soil near the lower part of the root and burying a microorganism-containing member containing microorganisms therein. It is the root treatment method as described in the structure.
An eighth configuration of the present invention is the root treatment method according to the seventh configuration, wherein the microorganism-containing member is a plant decomposed by a microorganism.
A ninth configuration of the present invention is the root treatment method according to any one of the first to eighth configurations, further comprising an application step of applying a rooting promoter to the cut surface of the root.
A tenth configuration of the present invention is the root treatment method according to the ninth configuration, wherein either or both of black and wax are further applied to the cut surface of the root.

  The eleventh configuration of the present invention is a covering member that is used in the root treatment methods described in the first to tenth configurations.

  According to the present invention, it has become possible to provide a technique for appropriately treating extended roots in a tree that has already been planted and grown, and for suppressing the extension of roots to the surface of the strata in subsequent growth.

The front perspective view which shows the coating | coated member in one embodiment of this invention The rear perspective view which shows the coating | coated member in one embodiment of this invention The top perspective view which shows the coating | coated member in one embodiment of this invention The left side perspective view which shows the coating | coated member in one embodiment of this invention The perspective view which looked at the coating | coated member in one embodiment of this invention from the upper left. The perspective view for demonstrating the use condition of the coating | coated member in one embodiment of this invention The figure which shows the mode of the tree periphery before performing the root treatment method in one embodiment of this invention Diagram showing the state of the roots that have been dug up and exposed The figure which shows the state which cut the root which was dug up and was exposed The figure which shows a root cutting process among the root treatment methods in one embodiment of this invention. The figure which shows a water injection process among the root treatment methods in one embodiment of this invention. The figure which shows the microorganisms containing member embedding process among the root treatment methods in one embodiment of this invention. The figure explaining the state of embedding in the microorganisms-containing member embedding process The figure which shows a coating | coated member installation process among the root treatment methods in one embodiment of this invention. The figure which shows the process of covering a coating | coated member with a protective cloth among the root treatment methods in one embodiment of this invention. The figure which shows the other structure of the coating | coated member in one embodiment of this invention The figure which shows the further another structure of the coating | coated member in one embodiment of this invention.

  Hereinafter, the present invention will be described more specifically with reference to preferred embodiments. However, the following embodiment is merely an example embodying the present invention, and the present invention is not limited to this.

<< I. Summary of Invention >>
In the root treatment method of the present invention, the root cutting step and the covering member installation step are essential steps. The root treatment method of the present invention includes a water injection process, a microorganism-containing member burying process, and a coating process as optional processes.

[Root cutting process]
The root cutting step is a step of cutting a root extended on the surface of the formation (hereinafter abbreviated as “extended root”) so that the cut surface faces obliquely downward. By including such a step, it is possible to appropriately treat the elongated roots, promote the subsequent elongation of the roots in the underground direction, and suppress the elongation of the roots to the formation surface. .

When cutting the roots, remove soil and paving stones around the roots to be cut if necessary. After removing soil and paving stones, the root is cut with a chain saw or a saw so that the cut surface faces diagonally downward.
Here, “the root is cut so that the cut surface faces obliquely downward” is defined as the direction opposite to the formation surface and the cut surface facing the underground direction. In addition, regarding the angle (cutting angle) when cutting roots, various factors such as the nature of trees and soil, underground objects (cables, water pipes, etc.) and the state of root growth are comprehensively considered. And an appropriate angle. The cutting angle θ is preferably 100 to 170 degrees with the direction along the formation surface being 0 degrees, and most preferably 130 to 140 degrees (see FIG. 10).

[Coating member installation process]
The covering member installation step is a step of installing a covering member that is positioned in the vicinity of the substantially front side (upper or tip side) of the cut root and covers the root. By including such a step, the roots that have been elongated after cutting will hit the covering member and extend in the underground direction, and the effect of suppressing the roots extending to the surface of the formation can be obtained.
About the covering member to be installed, the shape and the place to install (on the top side or the tip side, or both) can be selected as appropriate in consideration of the situation near the elongated root.
In the present invention, “covering the root” does not mean that the covering member is in direct contact with the root, and in view of the gist of the present invention, a newly extending root from the cut surface is applied to the covering member. It is used in the sense that by covering or touching, the roots extending in the underground direction are promoted.

The covering member is defined as a member having a certain rigidity and area, and plays a role of inducing a root extending direction such as extending after cutting into the ground. The covering member is not particularly limited as long as it plays such a role, and can be of various materials or shapes.
As the covering member, for example, a concave member curved to a certain degree as shown in FIGS. 1 to 6 or a cylindrical member that can surround the cut root itself as shown in FIGS. Can be used. These covering members may be used alone or in combination.

In the covering member, it is preferable that a slit groove is provided on the surface facing the root. According to such a preferable configuration, the roots converge and extend along the slit grooves, and the effect of suppressing and controlling the extension of the roots to the formation surface can be obtained.
The slit groove is a groove having a substantially semicircular or concave cross section as shown in FIG. 1 and has only to have a certain length along the underground direction.

The material of the covering member is not particularly limited as long as it is easily formed as a covering member having the above shape and has a certain rigidity, and various materials can be used. As such a material, for example, a plastic material or a ceramic material may be used.
The covering member is preferably made of a ceramic material. According to such a preferable configuration, the covering member has a certain rigidity and weight and robustness, and the effect of improving the stability when the root is covered can be obtained. In addition, because it is a natural material, it does not hinder the growth of trees.

[Water injection process, Microbe-containing material embedding process]
In the present invention, the water injection step and the microorganism-containing member burying step are defined as arbitrary steps, and both of these steps can be used alone or in combination.

The water injection process has the effect of injecting water into the soil near the bottom of the elongated root, making it easy to dig the soil, activating the nearby soil together with the root, and promoting the elongation of the root in the sprayed direction. In this sense, the water injection process is to inject water into the lower part of the root while assuming the direction of root extension.
In addition, the water to be used is preferably activated water containing a nutrient component that promotes root elongation. In the present invention, active water is defined as an aqueous solution containing nutrients and the like for the purpose of promoting the growth of plants or roots. Such active water may be a plant active water or a solution containing nutrients such as phosphorus, nitrogen, and potassium, which is called a rooting promoter, such as diluting Menedale (trade name). do it.
In addition, by mixing a tree activator in water, it is possible to recover a few wounds of the root.

The microorganism-containing member burying step has an effect of burying a microorganism-containing member containing microorganisms in the vicinity of the lower part of the elongated root, and promoting the extension of the root in the burying direction. In this meaning, the microorganism-containing member burying step embeds the microorganism-containing member in the lower part of the root while assuming the root extending direction.
By containing microorganisms, the microorganism-containing member softens the member itself by a fermentation action by microorganisms and plays a role of promoting root extension by the resulting nutrient components. The microorganism-containing member is not particularly limited as long as it plays such a role, and various members can be used.
As the microorganism-containing member, typically, a plant decomposed by microorganisms (corroded grass, leaves, wood, bamboo, etc.) may be used. Further, it is particularly preferable to use a member containing microorganisms such as dead leaves around the tree to be treated.

[Coating process]
In the present invention, the application step is defined as an arbitrary step, and plays a role of promoting root elongation on the cut surface by applying a rooting promoter to the root cut surface. The application process is not particularly limited as long as it plays such a role, and various rooting accelerators can be applied.
As the rooting accelerator, as described above, for example, Menedale (trade name) may be diluted and used.
In this case, it is preferable to further apply one or both of black and wax to the cut surface of the root. According to such a preferable configuration, root corrosion can be prevented and rooting can be promoted to stabilize the tree. As the ink, for example, a sumi stone liquid can be used, and as the wax, for example, a graft wax agent can be used.
Incidentally, the brazing agent is an agent that promotes entrainment of the epidermis and prevents intrusion of rainwater and has been found to be used by the inventor as having an extremely large effect in preventing material decay.
In addition, sumi ink has been used by the inventor since the ink used since ancient times has a high effect on timber decay and a high bactericidal ability effect.
By using these brazing agents and sumi stone liquid together, the effect of preventing decay on the coated surface can be further enhanced.

<< II. Embodiment >>
<Configuration of covering member>
First, the configuration of the covering member used in the root treatment method according to the embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a front perspective view showing a covering member according to an embodiment of the present invention, FIG. 2 is a rear perspective view showing the covering member, FIG. 3 is a plan perspective view showing the covering member, and FIG. FIG. 5 is a perspective view of the covering member as seen from the upper left, and FIG. 6 is a perspective view for explaining a use state of the covering member.

The covering member 1 of the present embodiment shown in FIGS. 1 to 5 is a member used to cover the root by being positioned in the vicinity of the front side of the root after cutting. As shown in FIG. 6, the covering member 1 is used in a state of being inclined forward toward the root after being cut.
As shown in FIGS. 1 to 5, the covering member 1 of the present embodiment is a concave member formed by bending a substantially rectangular plate body 1 a to the front side with a substantially central vertical axis as a center. It has become.
If the covering member 1 having such a configuration is used, as will be described later, the covering member 1 is disposed so as to cover the root by being positioned in the vicinity of the substantially front side (upper or distal end side) of the cut root. The extended root hits the covering member 1 and extends in the underground direction, so that the extension of the root to the formation surface can be suppressed.
A plurality of slit grooves 1b are provided in the concave portion of the covering member 1 (a surface facing the root 3 described later). Here, the slit groove 1b is a groove having a substantially semicircular or concave cross section, and has a certain length along the vertical axis direction.
According to such a configuration, the roots converge and extend along the slit groove 1b, and it becomes possible to suppress and control the extension of the roots to the formation surface.

The covering member 1 is made of a ceramic material.
According to this structure, it becomes easy to shape | mold as a covering member of the above shapes. In addition, it has a certain rigidity and weight and robustness, and it is possible to improve the stability when the root is covered. In addition, because it is a natural material, it does not hinder the growth of trees.

<Root treatment method>
Next, a method for treating roots in a tree using the covering member 1 will be described with reference to FIGS.

  FIG. 7 is a diagram showing a state around a tree before the root treatment method according to an embodiment of the present invention is applied, FIG. 8 is a diagram showing a state of a root that has been dug up, and FIG. FIG. 10 is a diagram illustrating a state of cutting a root, FIG. 10 is a diagram illustrating a root cutting step in the root treatment method according to an embodiment of the present invention, and FIG. 11 is a diagram illustrating a water injection step in the root treatment method. 12 is a diagram showing a microbial-containing member burying step in the root treatment method, FIG. 13 is a diagram illustrating a state of burying in the microorganism-containing member burying step, and FIG. 14 is a diagram showing a covering member installing step in the root treatment method. FIG. 15 is a diagram showing a step of covering the covering member with a protective cloth in the root treatment method.

FIG. 7 shows a state around the tree after about 25 years from planting. As shown in FIGS. 7A and 7B, it can be confirmed that the root 3 has come out to the ground surface around the tree 2.
As shown in FIGS. 8A and 8B, when the periphery of the root 3 was dug up, it was found that the root 3 branched in a complicated manner.

  As shown in FIGS. 9 (a) and 9 (b), the root 3 that was dug up and cut was cut with a chain saw or a saw. As shown in FIG. 10, the exposed root 3 is cut again after adjusting the angle θ of the cut surface with respect to the formation surface to about 135 degrees (root cutting step), and then rooted on the cut surface. Accelerator, sumi stone liquid, and grafting wax agent were applied in this order (not shown, application process). Thereby, corrosion of the root 3 can be prevented and rooting can be promoted to stabilize the tree 2.

Next, as shown in FIG. 11 (a), using the high-pressure injector 4, water containing an activator was sprayed to the lower part of the root 3 having a depth of 0.8 to 1.2 m. Thereafter, as shown in FIG. 11B, water was injected to a depth of about 1.4 m (soil improvement by water pressure, water injection step).
By including such a water injection step, it is possible to easily dig the soil in the vicinity of the lower part of the elongated root 3 and to activate the nearby soil together with the root 3 to promote the extension of the root 3 in the sprayed direction. Can do. In addition, it can be deeply cultivated and the soil can be improved without cutting the root system. Furthermore, a few wounds of the root 3 can be recovered by mixing a tree activator in the water.

Next, as shown in FIGS. 12 (a) and 12 (b), dead leaves and humus soil (soil conditioner) 5 collected around the tree 2 is buried under the root 3 and dried vertically. Inserted (coarse organic matter) 6 such as bamboo (wari bamboo) made (microbe-containing member embedding step). In this case, the bamboo (split bamboo) 6 was driven in using a wooden mallet or the like and inserted as deeply as possible (to the depth plowed in the water injection process). This bamboo (split bamboo) 6 is decomposed by microorganisms over several years, and remains as pores and water pores in the soil for many years.
FIG. 13 shows a state after the completion of the microorganism-containing member burying process by such a series of operations. As shown in FIG. 13, each buried object is buried at each depth and width. Of course, the situation after completion is just an example, and the type and depth of each buried object can be changed in a timely manner based on various conditions such as the size of the tree and the surrounding conditions.

Next, as shown in FIG. 14, the covering member 1 is placed so as to cover the root 3 near the front side (upper or tip side) of the cut root 3 and buried with soil (covering member installation). Process). Here, the covering member 1 was installed in a state of being inclined forward toward the root 3 after being cut (see FIG. 6). The covering member 1 was buried with the upper part exposed by 2 to 3 cm (see FIG. 14C).
By including such a covering member installation step, the root 3 extended after cutting hits the covering member 1 and extends in the underground direction, and the extension of the root 3 to the formation surface can be suppressed.

  Finally, as shown in FIG. 15, the upper part of the covering member 1 was covered with a protective cloth 7 for safety and covered with soil. This completes the root treatment.

  According to the root treatment method described above, when the root 3 has already extended to the surface of the formation, the extended root 3 is appropriately treated and the extension of the root 3 to the formation surface is suppressed in the subsequent growth. be able to.

In the above embodiment, the covering member is formed of a concave member formed by bending a substantially rectangular plate 1a to the front side with a substantially central vertical axis as a center (covering member 1). However, the present invention is not necessarily limited to such a configuration. The covering member may be configured as shown in FIGS. 16 and 17, for example.
A covering member 8 shown in FIG. 16 (a) is a concave member formed by bending a substantially trapezoidal plate body 8a into a semi-cylindrical shape having a lower end having a larger diameter than an upper end. A plurality of slit grooves 8 b are provided in the recess of the covering member 8 (the surface facing the cut root).
The covering member 9 shown in FIG. 16B is a cylindrical member that can surround the cut root itself and has a smaller diameter at the lower end than at the upper end. And the said covering member 9 is bent in the middle so that a lower end part may face a substantially vertical direction, when it mounts | wears with the root which cut | disconnected the upper end part (L-shaped pipe shape). If the covering member 9 having such a configuration is used, it is possible to guide the extending direction of the root extending after cutting into the ground with a simple configuration.
The covering member 10 shown in FIG. 17 is a cylindrical member that can surround the cut root itself and has a larger diameter at the lower end than at the upper end. Then, the covering member 10 is also bent in the middle so that the lower end portion is directed substantially in the vertical direction when the upper end portion is attached to the cut root, similarly to the covering member 9 shown in FIG. Yes (L-shaped pipe).

  In the above embodiment, the covering member 1 made of a ceramic material has been described as an example, but the present invention is not necessarily limited to such a configuration. The covering member may be made of a plastic material or an iron material.

DESCRIPTION OF SYMBOLS 1 Coating | coated member 1a Plate body 1b Slit groove 2 Tree 3 Root (extension root)
4 High-pressure injection machine 5 Dead leaves and humus soil (soil conditioner)
6 Dried bamboo, etc. (coarse organic matter)
7 Protective cloth

Claims (11)

A root cutting process for cutting the root extended on the formation surface so that the cut surface faces obliquely downward;
After cutting the root, a covering member installation step of installing a covering member that covers the root in the vicinity of the front side of the root; and
A root treatment method comprising:   The root treatment method according to claim 1, wherein a cutting angle of the root is 100 to 170 degrees with respect to the surface of the formation.   The root treatment method according to claim 1, wherein the covering member is a concave member curved to a certain degree.   The root treatment method according to any one of claims 1 to 3, wherein a slit groove is provided on a surface of the covering member facing the root.   The root treatment method according to any one of claims 1 to 4, wherein the covering member is made of a ceramic material.   The root treatment method according to any one of claims 1 to 5, further comprising a water spraying step of spraying water containing an activator onto the soil near the lower part of the root.   The root according to any one of claims 1 to 6, further comprising a microorganism-containing member burying step of digging up soil near a lower portion of the root and burying a microorganism-containing member containing microorganisms therein. Treatment method.   The root treatment method according to claim 7, wherein the microorganism-containing member is a plant decomposed by microorganisms.   The root treatment method according to claim 1, further comprising an application step of applying a rooting promoter to the cut surface of the root.   The root treatment method according to claim 9, wherein either or both of black and wax are further applied to the root cut surface. The covering member used for the root treatment method of any one of Claim 1 to 10.