JP4916294B2 - Grass transplanter and method for transplanting grass in the bottom of water - Google Patents

Description

  The present invention relates to a plant transplanter for transplanting aquatic plants and seaweeds to the bottom and seabed of rivers and lakes to improve the natural environment, and to a method of transplanting plants on the bottom of the water using the plant transplanter.

Plants such as aquatic plants and seaweeds that grow in the coastal areas of lakes and seas not only serve as spawning grounds for fish and larval fish, but also because the grass bodies themselves function to release oxygen and absorb nutrients in the soil. , Play an important role in water purification.
In addition, since these densely grow in the coastal area, the bottom sediment stabilization function that prevents the bottom sediment from being rolled up and eroded is also regarded as important.
However, because of the disappearance of these vegetation zones due to land reclamation and water pollution on the coast, technological development of aquatic plants and seagrass transplantation, restoration of lake vegetation zones, and creation of seaweed beds have been promoted.

For this reason, development of the transplanting member of the grass has been made in order to actively grow the grass on the bottom of the water.
As for the transplanted members using these conventional sheet-like materials, a method using a seeding sheet sandwiched or adhered in advance has been the mainstream. There are two types of seeding sheets, such as nets and mats, in which seeds are fixed on a base having a gap with a fixing agent or the like, or seeded sheets are covered with cloth or nets to hold the seeds. (JP 10-42626, JP 11-308904, JP 2005-348696)
In addition, there is a technique for fixing a grass directly on a sheet, which is used for shipping turf. (Japanese Patent Laid-Open No. 10-215682)
Japanese Patent Application Laid-Open No. 10-42626 (Japanese Patent Application No. 8-199153) Japanese Patent Application Laid-Open No. 11-308904 (Japanese Patent Application No. 10-181976) JP-A-2005-348696 (Japanese Patent Application No. 2004-175880) Japanese Patent Laid-Open No. 10-215682

The seagrass / aquatic plant transplant technology using these conventional sheets has a problem that it is necessary to collect seeds because it is necessary to sandwich or attach seeds in advance.
In addition, since seed collection requires harvesting of aquatic plants and seaweed communities, there is a problem of causing great damage to aquatic plants and seagrass communities.
In addition, for the collected seeds, there is a problem that it requires a device and time to keep the seeds in a good state, such as selection, ripening, and management of seeds with a high germination rate, and is a technique with a limited implementation period. .
Furthermore, there is a problem that the method of directly fixing the stock on the sheet is a method limited to work on the turf on land.

In addition, anchors etc. were used to fix the conventional transplant sheet to the sea floor. However, it takes time to corrode and is inferior to the environment, so the time until corrosion can be adjusted and the transplant sheet can be fixed securely. The method is desirable.
In addition, when the transplant sheet is laid down on the seabed, the buoyant grass tends to be detached.

  An object of the present invention is to provide a grass transplanter excellent in environmental performance and a method of transplanting a grass body that can transplant a grass body such as aquatic plants and seaweeds without damaging a plant community on the water floor or the sea floor.

The grass transplanting device according to the present invention is a grass transplanting device for growing a plant by attaching the grass and transplanting the plant to another place together with the grass. Two legs formed of a biodegradable material are arranged on the left and right. A biodegradable base sheet is stretched between the two legs, the legs are formed of a cylindrical material, and weight materials are packed in the cylindrical legs. It is what.

  A weight material may be packed in a leg formed by a cylindrical material. As the weight material, sand or gravel can be used.

  A frame body made of a cylindrical material is provided on the left and right or front and back of the presser net, and a weight material may be packed in the cylindrical frame body. As the weight material, sand or gravel can be used.

In addition, as a method of transplanting the grass, the grass transplanter is placed near the underwater aquatic grass or seaweed community, and the grass is attached to the base sheet,
The grass body is fixed to the base sheet of the grass transplant device to which this grass body adheres,
The grass transplanter is moved to another place to root the grass.

The grass transplant device according to the present invention can obtain the following effects.
<a> The seed sheet is not placed on the base sheet, but it is not necessary to secure seeds, and the natural environment is not damaged, because the seedlings are settled by natural propagation of aquatic plants and seaweeds. Breeding in consideration of
<B> Since the two legs are arranged on the left and right, installation can be easily performed by grasping the legs one by one with both hands, spreading them to the left and right, and driving both ends of the legs into the bottom of the water.
<C> Since a leg or a base sheet made of a biodegradable material is used, it decomposes over time and returns naturally, and does not pollute or destroy the environment.
<D> The weight material in the cylindrical leg can reduce the influence of the ocean current when installed on the bottom of the water.
<E> By using a natural material such as sand as the weight material, the weight material does not destroy the environment as a natural object after the leg has returned naturally.
<F> The presser net can be used to prevent the flaking of the grass accompanying the laying work.

[Example 1]
<1> Configuration of Grass Transplant Device A shown in FIG. 1 is a grass transplant device according to the present invention, and includes leg bodies 1 and 1 arranged on the left and right sides and a base sheet 2 stretched between the leg bodies 1 and 1. Basic configuration.
The grass includes both aquatic plants and seaweeds.

<2> Legs Legs 1 are members for holding the base sheet and fixing it to the seabed.
Leg 1 is formed of a biodegradable material.
Further, the leg 1 may be a rod-shaped one formed into a U-shape, but the embodiment uses a cylindrical body made of a biodegradable material.
The leg 1 is formed by bending both end portions thereof. Examples of the biodegradable material include biodegradable plastics made of starch.

<3> Base sheet The base sheet 2 is a member for attaching a grass body to be transplanted to the water bottom to the grass transplanter. In the present embodiment, the base sheet 2 includes two legs arranged in parallel. It is stretched across the middle part of the body 1.
The base sheet 2 is formed of a biodegradable material like the leg 1. As the biodegradable material, a net material knitted from yarn formed from starch or cellulose resin, a palm mat formed from a palm tree branch, or the like can be used.
The base sheet 2 may be attached to the leg 1 by, for example, wrapping the end portion around the leg 1 and binding it with a wire or the like.
The thickness of the base sheet 2 is set to 1 mm or more and 2 mm or less in consideration of the necessary strength when performing the transplanting operation. When using a palm mat, the thickness is about 2 to 10 mm. In the case of a net material, the roots of the grass body 6 (diameter 1 to 2 mm) may be penetrated, and the mesh is 2 mm or more.

<4> Weight material The weight material 3 is a member filled in the cylindrical leg 1, and gives a weight sufficient to stably fix the grass transplant device to the water bottom.
Sand or gravel can be used as the weight member 3. The weight material 3 may be a liquid such as water in addition to sand, but a material having a property that does not adversely affect the surrounding environment is appropriately selected in consideration of the future decomposition of the leg 1. For example, water bottom mud, sand, or gravel for transplanting grass is suitable from the viewpoint of ecosystem conservation.
The end of the leg 1 is filled with a stopper 4 to prevent the weight material 3 from flowing out.

<5> Presser net The presser net 8 is used to prevent the leaves of aquatic plants and seaweeds attached to the base sheet from being rubbed off and peeled off by the buoyancy received when the plant transplanter is laid on the bottom of the water. It is a member. This is particularly effective when the sticking agent 7 to be described later is applied only to the nodes of the stems of the grass.
As the presser net 8, a net made of a biodegradable material is used, and is covered and fixed on the base sheet as shown in FIG.
The presser net 8 has a mesh of about 15 to 20 cm so as not to hinder the growth of the grass body 6.

<6> Step of attaching aquatic plants / seaweed First, the plant 6 of the aquatic plants / seaweed to be transplanted is attached to the plant transplanter A having the above-described configuration.
As shown in FIG. 5, the grass transplanter A is disposed near the aquatic plants or seagrass communities B at the bottom of the transplant source. The arrangement is such that the legs 1 and 1 are expanded to the left and right, and both ends of the legs 1 are driven into the bottom of the water.
The grass transplant device A is lightweight because the leg body 1 is composed of a cylindrical body made of a biodegradable material, and the base sheet 2 can be easily stretched easily in water just by spreading the left and right leg bodies 1 and 1. Can be set.

Moreover, since the weight material 3 is filled in the inside of the leg body 1, it can be installed stably even if affected by waves and tides. If the weight is insufficient, a weight such as a chain may be applied to the entire leg 1.
The aquatic plants and seaweeds grow from the basement stem, but the basement sheet 2 is near the community B, so that the basement stem 5 extends and invades on the basement sheet 2. Also settled in. From the rhizome 5, the grass body 6 grows and grows.

<7> Lifting Step of Grass Transplant Tool Grass transplant device A to which grass body 6 is attached is pulled up from the bottom of the water and transplanted to another place where community B is insufficient.
Here, the grass body 6 is temporarily fixed so that the grass body 6 does not peel from the base sheet 2 before transplantation. It adheres to the base sheet 2 with an adhesive 7 that does not hinder the growth of the grass body 6. As the adhesive 7, a gel-like adhesive such as starch paste can be used.
The sticking agent 7 may be attached by dipping the base sheet 2 directly in the sticking agent, or may be attached only to the node portion of the stem of the grass. A necessary amount of the sticking agent 7 is attached according to the environmental conditions of the transplantation site.

<8> Laying process of grass transplant device The grass transplant device A is sunk and laid in the bottom of the water to which the grass is transplanted.
At this time, the grass transplanter receives buoyancy, and leaves of the grass soar, but the presser net 8 can prevent the grass from peeling.
After installation, the plant body 6 grows from the plant transplant device A to the rooted community B.
Since the leg 1, the base sheet 2, or the presser net 8 is biodegradable, it is decomposed over time and returned naturally, so that the surrounding environment is not adversely affected.
As described above, according to the present invention, it is possible to easily transplant aquatic plants and seaweeds without requiring seeds.

[Example 2]
As a second embodiment, the weight member 3 may be provided not in the leg body 1 but in the presser net 8.
A frame that forms a hollow cylinder made of a biodegradable material is attached to both ends or four sides of the presser net 8, and the weight material 3 is filled in the frame to be sealed. Other configurations are the same as those in the first embodiment, and are therefore omitted.
According to the present embodiment, since the weight of the leg 1 can be reduced, the handling of the grass transplanter in the process of attaching the aquatic plants and seaweeds to the grass transplanter is very simple, and the efficiency of the process work is realized.

It is a perspective view of a plant transplant tool. It is a perspective view of the grass transplant device in which the grass grew. It is a partial cross section figure of a leg. It is sectional drawing of the base sheet which the grass body adhered. It is a top view of the grass transplanter installed near a community.

Explanation of symbols

A Grass transplanting tool B Community 1 Leg 2 Base sheet 3 Weight material 4 Plug 5 Underground stem 6 Grass 7 Sticking agent 8 Presser net

Claims (4)

A plant transplanter for growing a plant attached to the plant, and transplanting the plant to another location with the plant,
Arrange two legs formed of biodegradable material on the left and right,
A biodegradable base sheet is stretched between the two legs,
A leg transplanter characterized in that a leg is formed of a cylindrical material, and a weight material is packed in the cylindrical leg . Cover the presser net on the base sheet on which the grass is grown ,
A frame made of a cylindrical material is provided on the left and right or front and back of the presser net,
The grass transplanter according to claim 1, wherein a weight material is packed in the cylindrical frame.   The grass transplanter according to claim 1 or 2, wherein sand or gravel is used as the weight material. The grass transplant device according to any one of claims 1 to 3 ,
Place it near the underwater aquatic plants or seagrass communities and attach the grass to the base sheet.
The grass body is fixed to the base sheet of the grass transplant device to which this grass body adheres,
The plant transplanter is relocated to another place and rooted.
Transplanting grass on the bottom of the water.

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