JP2002238397A - Rearing member for algae - Google Patents

Abstract

PROBLEM TO BE SOLVED: To more surely and rapidly form a seaweed bed by composing a rearing member having a constitution for facilitating spreading of roots of the algae. SOLUTION: This rearing member for the algae B is obtained by forming protruding parts 114 having engaging functions to engage with spawn yarns 3 to which spores of algae B stick on a surface 11a of a rearing member body 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a growth member capable of suitably growing algae.

[0002]

2. Description of the Related Art Conventionally, algae breeding grounds for growing algae for use as fish reefs include natural rocks, tetrapods and concrete plates, or piles of these concrete products or distribution of natural stones therebetween. Those that have been established have been used. By the way, recently, mainly in sea areas,
The so-called shore-burning phenomenon, in which algae are killed and seagrass beds are lost due to various causes, such as changes in water temperature and water quality, or damage caused by herbivores such as sea urchins, abalones, and turtles, has become a problem. In response to such a problem, in the conventional fish reef as described above, it is expected that the algae adhere to and grow by directly inputting into the sea area where the algae naturally grow for the purpose of blocking the reef and the like. For this reason, it takes too much time for the algae to adhere to the blocks and the like that have been put in, and it has not been practically a countermeasure, nor has it been a countermeasure for a case where the sea-burning has spread.

[0003]

Therefore, a so-called seed thread, in which spores (including zoospores) are released into algae collected beforehand and adhered to the spores, is wound around a tetrapot or the like as described above, and an underwater adhesive is used. There has been proposed a method for growing algae more reliably and quickly by fixing the algae. However, in such a method, it takes a great deal of labor and cost to transport a heavy tetrapot or the like to the seabed after fixing the seed yarns, and the tetrapot which has been previously settled on the seabed is required. Fixing the seed yarn in a pot or the like also involves a great deal of work.

[0004] In order to solve such a problem, a growing member having a function of growing algae from a spore or a germ state, and a growing member in which the grown algae are alive are provided. A method has been considered in which a member is fixed and a pedestal having a function of stably installing the member on the seabed is provided. In such a growing member, in order to surely grow the algae, a growing member configured so that the algae can firmly establish roots from the stage of germination is desired. In addition, when the algae are not growing sufficiently, they cannot secrete the bitter components hated by herbivores, such as sea urchins and abalones, and become good food for these herbivores. There is also a demand for a function of preventing damage by living organisms.

[0005] Therefore, an object of the present invention is to provide a growing member having a configuration in which algae can easily spread roots and prevent damage to the roots, and an object thereof is to contribute to the reliable and rapid formation of a seaweed bed.

[0006]

That is, the growing member of the present invention comprises a growing member main body for growing algae, wherein algae spores are adhered to the surface of the growing member main body. It is characterized in that it has one or a plurality of protrusions that can hold the seed yarn.

[0007] With such a configuration, the seed yarn can be easily hung on the protruding portion projecting from the surface of the growing member main body, so that the work of attaching the seed yarn to the growing member is easy. For example, even in the case of performing so-called intermediate cultivation in which algae are grown from spores to a certain size on a seed thread in the sea or the like, it is possible to prevent the seed thread from coming off the growing member and flowing away. it can.

[0008] In the growing member having such a configuration, in order to effectively prevent the damage caused by planted organisms such as sea urchins, abalones and turtles, the invasion of planted organisms on the surface of the body of the grown member is inhibited. It is preferable to form the obtained erosion prevention zone. As a result, it is possible to simultaneously ensure the survival of the algae on the growing member and the prevention of food damage, and thus it is possible to reliably and quickly create a seaweed bed.

Specifically, in order to easily form the erosion prevention zone, it is preferable to form the erosion prevention zone from one or a plurality of protrusions. For example, when a plurality of projections form the erosion prevention zone, the seed yarn hooked on the projections having the hooking function is passed between the projections having the erosion prevention function. What should I do? In addition, the protrusion having the function of hooking the seed yarn may also have the function of preventing erosion, or the protrusion constituting the erosion prevention zone may have the function of hooking the seed yarn.

Further, in order to allow the seed thread to be firmly hooked by the first projection having the function of hooking the seed thread, a surface facing the growing member main body side is exposed on the first projection. It is preferable that a reverse gradient is formed, and a space in which the seed yarn can be hooked is formed between the portion of the first protrusion having the reverse gradient and the surface of the growth member main body.

By the way, when growing algae from the stage of spores or juveniles that have not yet grown sufficiently, using equipment such as a water tank for growing algae installed on land,
There is a problem that the cost is high due to the necessity of preparing a device for supplying fresh water and preparing a large area. When growing spores of algae on the water floor (sea bottom), sufficient sunlight is required. There is a problem that they cannot be secured and are easily damaged by food damage. Therefore, the growing member is suspended on a floating material such as a raft or a buoy floating on the water surface (sea surface), and the algae are grown underwater (in the sea) until the algae are activated on the growing member and are less likely to be affected by damage. It has been found that a method of relocating a growing member in which sufficiently grown algae have been activated to a member having an anchor function consisting of a heavy material to be laid on the seabed is effective for efficient algae bed creation.

[0012] In this way, when algae are intermediately grown,
The breeding member is hung from a raft or the like via a hanging tool such as a rope. However, in the water, the breeding member constantly swings due to waves or currents. Therefore, in order to prevent such a problem that the seed yarn is rubbed with the suspending tool and cut and the algae are washed away, the growing member is provided at a portion of the growing member main body avoiding the protrusion. It is desirable to form an abutment path for attaching a suspending tool for suspending the main body underwater to the surface.

In this case, in order to allow the growing member to be firmly fixed by the hanging tool by a simple method, a through hole is formed in the attachment path so as to penetrate the growing member body in the thickness direction. It is preferable that the tying member inserted into the through-hole can restrain the hanging member attached to the attachment path in a state where the growth member main body is sandwiched in the thickness direction.

[0014] Regardless of the presence or absence of the abutment path,
If a through-hole that penetrates the breeding member body in the thickness direction is formed at a part of the breeding member body that avoids the protruding portion, the breeding member is hung under the sea using such a through-hole, and the middle of the algae is interposed. It can be easily grown and attached to the above-mentioned member having the anchor function. Specifically, when such a through-hole is formed, the through-hole can function as an attached portion to which the growth member main body is detachably attached to a pedestal installed at a predetermined position on the sea floor, After the algae have grown, they can be easily transferred to the seabed, and the growing member can be easily fixed to a pedestal to be laid on the seabed.

In order to easily fix the seed yarn hung on the projection to the growing member, it is preferable to provide a fixing means for fixing the seed yarn to the growing member main body.

[0016]

An embodiment of the present invention will be described below with reference to the drawings.

The growing member 1 in this embodiment shown in FIGS. 1 and 2 constitutes a detachable seaweed bed breeding reef A shown in FIGS. 5 and 6 together with a pedestal 2 laid down on the seabed P. This detachable seaweed bed reef A is used to grow and proliferate alame C, a kind of seaweed, and to mainly catch seafood such as abalone that gather to eat it as food. is there. This seaweed bed breeding reef A is the above-described growing member 1 having a function for mainly growing Alame B.
And a pedestal 2 having an anchor function as a weight for holding the growing member 1 on the sea floor P. As the seaweed, perennial brown algae such as squid and black ome can be applied in addition to alame.

As shown in FIGS. 1 and 2, the growing member 1 mainly comprises a plate-shaped concrete growing member main body 11 having a substantially rectangular shape of about 10 cm × 25 cm in plan view and a thickness of about 2 cm. , And its weight is about 1.5 kg. As described above, the human breeding member 1 has such a size and weight that the human breeding member 1 can be handled by hand, thereby improving handling and maintenance such as transportation. Thus, a through hole 111 having a diameter of about 2 cm penetrating in the thickness direction is formed substantially in the center of the surface 11a of the growth member main body 11. A pair of raised portions 112 are formed on the surface 11a at positions slightly inward from both ends in the longitudinal direction so as to partially raise the surface 11a so as to form a convex shape. A plurality of first protrusions 114 (in the illustrated example, in the illustrated example) formed in a portion extending from the skirt portion of the raised portion 112 to the planar surface 11a, the portion simulating a part of a general bolt head and a shaft portion. Four for each ridge 112),
Further, on the surface of the protruding portion 112 which is located at a higher position than the first protruding portion 114, a second protruding portion 115 having a plurality of irregularities imitating the shape of natural stone is formed. As described above, the first protrusion 114 has a shape imitating a part of the head and the shaft of the bolt, and thus has a reverse slope 114a that exposes a downward surface of the bolt head. are doing.
On the other hand, the distance between the second protrusions 115 is such that the herbivores such as sea urchins, abalones, and turtles are the same.
They are set so narrow that they cannot enter between each other. In addition, except for the surfaces of the first protrusion 114 and the second protrusion 115, the growth member main body 11 including the surface of the protrusion 112 is provided.
Has a shallow uneven shape imitating the shape of gravel. The growing member main body 11 having such a configuration is an integrally molded product made of a concrete material manufactured by a method described below. Further, a fixing member 12 made of an elongated small wooden piece shorter than the width of the growing member main body 11 is embedded and fixed at both longitudinal end portions of the surface 11 a of the growing member main body 11. The fixing member 12 is formed with two cutouts 121 extending in substantially the same direction as the longitudinal direction of the growing member main body 11 and opening upward in the illustrated example. Then, such a fixing member 12 is attached to the growing member main body 1.
Before the concrete material hardens, embed it,
After the curing, the growing member 1 is formed integrally with the growing member main body 11. The planar surface 11a of the growth member main body 11 between the pair of raised portions 112
As will be described later, when the growing member 1 is hung on the sea R with the rope 4 attached thereto as described later, the rope 4 is passed along the surface 11a in the width direction along the surface 11a. The contact path 113 is provided. Thus, in the growing member main body 11, the through hole 11
1 is formed. The rear surface 11b of the growing member main body 11 is formed in a planar manner with shallow irregularities similarly to the front surface 11a.

Here, a method of manufacturing the growth member main body 11 of this embodiment will be described with reference to FIGS. FIG.
As shown in (a), first, gravel (not shown) is spread over a formwork 72 whose periphery is surrounded by an outer frame 71 made of a material such as steel. And number c
A natural stone 8 having a size of about m is raised at two locations at a predetermined distance from each other, and the thermoplastic material 9 (91) heated and melted from above the gravel, the natural stone, and the bolt 8 is converted into a natural stone 8 or the like. Sprinkle to cover the surface. Here, as the thermoplastic material 9, for example, "EM / M" (trade name;
(Sumitomo Osaka Cement Co., Ltd.). This "E
"M / M" is a thermoplastic elastomer in which oil is sealed in a three-dimensional network structure of a special polymer, which becomes a rubber elastic body at room temperature and becomes oily at a high temperature of 210 ° C. or more. If left in this state for a while, the thermoplastic material 9 is cured, and a sheet-like mold 92 made of a rubber elastic body is formed (FIG. 3B). At the stage when the formwork 92 is formed, the formwork 92 is detached from the gravel 8 by utilizing the elastic deformation of the member (FIG. 3).
(C)). At this time, the thermoplastic material 9 (91) poured from the surface side of the natural stones 8 flows into the gaps 8a of the natural stones 8 and the like, as shown in FIGS. 3 (c) and 4 (a). Thus, the mold 92 having the soft protrusions 92a corresponding to the gaps 8a is formed. After a while, this formwork 9
2 is placed in the frame 73, and a cement material 74 such as mortar is poured into the frame 73 (FIG. 4A). On this occasion,
A completed through-hole 111 is formed by previously arranging a cylindrical rod 75 in the center of the frame 73 (FIG. 4).
(B)). After the cement material 74 is cured, it can be easily separated from the cement material 74 by utilizing the elastic deformation of the mold frame 92, which is a rubber elastic body, and as shown in FIG. The growth member main body 11 having the raised portion 112 and the first and second protrusions 114 and 115 having a surface shape corresponding to the shape of the natural stone 8 or the like piled on the base material is formed. As described above, before the cement material 74, which is a concrete material, hardens, the mounting member 12 may be embedded in a predetermined location. The method is not limited to this, and the attachment member 12 may be attached with an adhesive or the like after the cement material 74 is cured. here,
If the cement material 74 contains an oyster shell or the like containing a large amount of a component such as calcium (not shown), the growth efficiency of Alame B and the effect of gathering abalone and the like can be improved.

In order to grow Alame B using the growing member 1 having such a configuration, in this embodiment, as shown in FIGS. 1 and 2, spores of Alame B are attached to the mounting portion 12. The seed yarn 3 is attached. The seed yarn 3 is a so-called Cremona yarn having a thickness of about several millimeters. Alame B naturally growing on the seabed is collected, put into a predetermined water tank together with the seed yarn 3, and is placed in the water tank. And the spores released from Alame B are attached to the seed yarn 3. Thereafter, the seed yarn 3 is pulled up from the water tank, cut into a predetermined length, and the one end portion 3a is attached to the growing member 1.
The first projection 1 on the side where the fixing member 12 is provided is inserted and fixed in the notch 12a of the fixing member 12 at all.
14 and the surface 11a of the growth member body 11
And the other end 3b is inserted into the other notch 12a of the fixing member 12 and fixed. In the process, the seed yarn 3 is made to follow the surface of the protruding portion 112 and pass between the second protruding portions 115 and between the first protruding portion 114 and the second protruding portion 115. I have. In this way, the seed yarns 3 are attached to both end portions of the growing member 1. As described above, the first protrusion 114 mainly has a hooking function for hanging the seed yarn 3, while the second protrusion 115 grows the alame B from the spore on the seed yarn 3. In this case, a erosion prevention zone for mainly preventing the invasion of herbivores and preventing erosion damage is constituted. When the space between the first protrusions 114 and the second protrusions 115 is narrow enough to prevent the invasion of herbivores, the function of preventing the harmful effects is also exerted between them.

On the other hand, the pedestal 2 shown in FIG. 5, FIG. 6 and FIG.
Has a substantially square shape with a side of about 2.2 m in plan view, and has a function as an anchor of about 9 t in weight made of a concrete block having a height of about 1 m.
The pedestal 2 contains an oyster shell 22 in its concrete composition, as shown in cross section in FIG. 8, in order to effectively use marine waste. In the present embodiment, the pedestal 2 mainly plays the role of an anchor. However, in order to continuously form the seaweed bed C on the seabed P, the concrete composition is required to have strength enough to withstand a certain degree of aging. The oyster shell 22 therein is mixed at a predetermined ratio with the cement material 21 which is the basic composition. By doing so, it will be useful for the effective use of oyster husks, which are difficult to dispose of in fisheries areas. It is also effective in forcing B. It should be noted that a general concrete block not containing such a material can also be used. Then, a metal bolt 2 that can be inserted into the through hole 111 of the growing member 1 is provided on the surface thereof.
3 are protruded. Also, a hook 24 used to sink or lift the pedestal 2 is attached to a substantially central portion of the surface. A resin cover (not shown) is attached to the bolt 23 so that shells and the like do not adhere to the bolt 23 when not in use, so that the entire bolt 23 is covered.

Next, seed yarn 3 to which spores of Alame B were attached
A method for intermediately growing Alame B using the growing member 1 to which is attached and a method for creating a seaweed bed will be described.

First, as shown in FIG. 5 (a), the breeding member 1 is suspended through the rope 4 attached to the raft 5 floating on the sea surface R, in the sea Q at a depth of about 5 m or less, and the sea area is divided into an intermediate cultivation zone. Let it be X. In addition, as the middle cultivation zone X,
It is also possible to set in the sea area where Alame B grows or in the vicinity thereof, so that the spores flowing along the sea current naturally adhere to the growing member 1. The rope 4 is a so-called fishing rope in which two thick rope elements 41 formed by bundling and twisting a large number of thin yarns are further twisted together to have a diameter of 1 to 2 cm. In order to suspend the growing member 1 using this rope 4, as shown in an enlarged view in FIG. 7, the twist of the rope elements 41 is partially untwisted, and the pair of growing members 1 In a state where the rope elements 41 are joined together, the longitudinal direction is made substantially perpendicular to the water depth direction, and the rope elements 41 which have been unraveled are sandwiched between the rope elements 41, and the rope elements 41 are respectively attached to the attachment paths 113. . Then, since the unraveled rope elements 41 try to return to the original twisted state, the growing member 1 is moved between the rope elements 41 by the force.
Will be strongly pinched. Then, in order to further prevent the growth member 1 from falling off, the binding band 6 as a binding tool is inserted into the through hole 111 of the growth member 1, and the rope elements 41 are restrained by the binding band 6. This unity band 6
Is a commercially available resin product having a hole at one end, and the other end inserted into and engaged with the hole to restrain other members. In this manner, a plurality of growing members 1 are attached to one rope 4 at different heights, and at the lower end of the rope 4, the rope elements 41 are tightly connected to each other to form the bump 4.
I'm making 2. In this embodiment, as described above, a large number of the plurality of breeding members 1 are prepared so that a total of about 2,000 breeding members 1 can be suspended from the raft 5. In addition,
Instead of sandwiching the two growing members 1 at the same place where the rope elements 41 are untwisted, only one growing member 1 may be sandwiched. In any case, since the rope 4 holds the growing member 1 along the attachment path 113, the rope 4 does not come into contact with the seed yarn 3, and even if the rope 4 shakes due to an ocean current or a wave, the seed yarn 3 is not cut by friction.

In order to hold the growing member 1 on the rope 4, the growing member 1 is placed in a substantially horizontal posture, the rope 4 is passed through the through hole 111, and the growing is performed by a knob formed by tying a part of the rope 4. It is conceivable that the member 1 is received from below. However, in this case, the stability of the growing member 1 in the sea Q is poor, and the rope 4 may be cut at the edge of the through hole 111. Furthermore, the through hole 1
In order to pass the thick rope 4 through the wire 11 while preventing cutting by friction, it is necessary to make the diameter of the through hole 111 larger than the thickness of the rope 4. However, as described later, the growing member 1 is moved to the seabed P. When fixing to the pedestal 2, the through hole 111
The bolt 23 for passing through the hole must be so thick. In other words, such a method of suspension is disadvantageous also in terms of cost, and the size of the through hole is sufficient if it can pass through the binding band 6 and can insert a general bolt 23. . From such a viewpoint, it is most preferable to apply the method of suspending the growing member in the present embodiment as described above.

Further, as described above, by suspending the two growing members 1 back to back, it is possible to prevent unnecessary adhering substances such as barnacles and mussels from adhering to the back surface. When transferring 1 to the seabed P, the attachment condition to the pedestal 2 can be maintained satisfactorily. Further, when one growing member 1 is suspended instead of being suspended with the rope 4 with the two growing members 1 facing each other, a plate, a frame, a wrap film (food wrap film) ), Etc., may be attached so that barnacles or the like do not easily adhere to the rear surface of the growth member 1.

In this way, the growing member 1 is suspended in the sea Q for a certain period to perform intermediate growing, and then the growing member 1 is pulled up, and as shown in FIG. It is moved to the development zone Y set as the place to be developed. The growth degree of Alame B at this time is such a size that the grown Alame B does not come out of the growing member 1 without completely resisting the resistance received from the tide, for example, a leaf length of 10
Approximately ~ 60cm. Alame B, which has not grown sufficiently, is soft and cannot secrete florothannin, which is a unique astringent component hated by vegetation such as sea urchins. However, if grown up to the above-mentioned size, the self-defense function can be exhibited, and such a fear can be avoided. Further, Alame B can receive a greater amount of sunshine than the seabed P, has the advantage that it grows faster, and the number of growing days as intermediate growing can be reduced.

In the formation zone Y, as shown in FIG.
After inserting the bolt 23 of the pedestal 2 into the through hole 111, a resin wing nut 25 that completely covers the tip of the bolt is attached to the tip of the bolt, thereby forming the seaweed bed reef A. In the case where a seaweed bed is formed widely, a large number of seaweed bed reefs A may be arranged. The work of attaching the growing member 1 to the pedestal 2 may be performed by previously laying the pedestal 2 on the seabed P and allowing a diver to dive as described above. Attached to the pedestal 2 on a barge or on land, and especially taking care that the alame B does not dry out and die, the seaweed bed breeding reef A consisting of these breeding members 1 and the pedestal 2 may be submerged on the seabed P. it can. In this case, the underwater forest of Alame B shown in FIG. 6A is completed in this manner. Then, after the seaweed bed has been created, as shown in FIG. 3B, when some or all of the Alame B has been killed due to rocky shore or the like, or when the abalones collected on the breeding member 1 are to be caught. As shown in FIG. 6 (c), only the growing member 1 is removed from the pedestal 2, and as shown in FIG.
In the above, the new growing member 1 on which the arame B has grown is transferred and replaced. Further, the detached growing member 1 is subjected to maintenance, and is used again for growing Alame B in the growing zone X. In this manner, maintenance of the entire seaweed bed can be performed.

As described above, according to the present embodiment, the growing member 1 is provided on the surface 11a of the growing member main body 11 with the first projection 114 having a function of hooking the seed thread 3 and the planted animal. And a second projection 115 that constitutes a erosion prevention zone that inhibits entry and prevents erosion,
The seed thread 3 hung on the first projection 114 is moved to the second projection 1
15 are passed through each other, so that Alame B grown from the seed thread 3 firmly hooked on the growing member 1 by the first protrusion 114 does not suffer from damage by the second protrusion 115. In this way, it is possible to cause the alame B to be rooted in the growing member 1 and to perform the subsequent seaweed bed creation reliably and promptly.

Further, the first protrusion 11 is formed near the lower end of the raised portion 112 formed on the surface 11a of the growth member main body 11.
4 and the second projecting portion 115 is formed on the raised portion 112 higher than the first projecting portion 114, so that the seed yarn passed between the second projecting portions 115 is formed. It is possible to make the Alame B grown from No. 3 root by holding the raised portion 112, and it is possible to cause the Alame B to be more firmly rooted in the growing member 1. Further, since the raised portion 112 is raised so as to protrude upward, the seed yarn 3 does not rise from the breeding member main body 1 but follows the raised portion 112 and the seed yarn 3 is moved by the sea current. Since it does not swing, the roots of Alame B, which originally have a function of grasping on a rocky place or the like, can be more positively rooted on the growing member 1. Furthermore, since the surface of the raised portion 112 has an uneven shape, the roots of Alame B can more firmly grasp the raised portion 112 and become active on the growing member 1, and the Alame B can be more effectively prevented from flowing out. Can be planned.

The first protrusion 114 is formed with a reverse slope 114a having a surface facing the growth member main body 11 side, and this reverse slope 114a and the surface 1 of the growth member main body 11 are formed.
Since the seed yarn 3 is hooked in the space s between the seed yarn 1a and the first protrusion 114, the stability of the seed yarn 3 hooked on the first projection 114 is improved. Can be.

Further, since the plurality of second protrusions 115 are set so that the distance between them is so small that herbivores cannot enter the seaweed beds, the plurality of second protrusions 115 have a more effective anti-pollution function and can be used for a long time. It can be kept healthy.

Further, in addition to such a configuration, the connecting path 1
A through-hole 111 is formed on the growth member main body 11 in the thickness direction, and the growth member main body 11 is sandwiched in the thickness direction along the attachment path 113 by the binding band 6 as a binding tool inserted through the through-hole 111. Since the rope 4 is restrained, the growing member 11 can be firmly fixed to the rope 4 and suspended by an extremely simple method.

Since the through-hole 111 also functions as a portion to which the growing member 1 is detachably attached to the pedestal 2 installed on the sea floor P, the growing member 1 is suspended during the intermediate growing. By effectively utilizing the configuration for lowering, it is possible to easily transfer the alame B to the pedestal 2 when creating a seaweed bed on the seabed P after growing.

As a means for fixing the seed yarn 3 to the growing member main body 11, the first protrusion 114 is formed by forming the fixing member 12 having the cutout portion 12a into which the seed yarn 3 can be inserted and fixed. Since the hooked seed yarn 3 is fixed, the seed yarn 3 can be more securely fixed to the growing member 1, and it is possible to more effectively prevent the lame B from flowing out.

The present invention is not limited to the above embodiment. For example, various modifications can be made to the specific configuration of each part, such as the method of attachment to the growing member, the shapes of the first and second protrusions, and the shape of the growing member itself, without departing from the spirit of the present invention. It is possible. Similarly, the method of growing algae and the method of forming a seaweed bed can also be variously changed.

[0036]

The present invention is embodied in the form described above, and has the following effects.

That is, the present invention relates to an algae having a growth member main body having one or more projections formed on the surface and having a function of hooking a seed thread having algae spores adhered to the projections. It is a growing member for growing. For this reason, the seed thread is hung on the protruding portion, so that the algae can be rooted on the growing member, the growth thereof can be ensured, and the run-off of the seed thread can be effectively prevented.

If such a growing member is formed on the surface of the body of the growing member with an edible prevention zone capable of preventing the invasion of herbivores and preventing the damage of the edible organisms, the algae that grew up in sea urchins and the like can be used. Eating can be prevented by this erosion control zone, which greatly contributes to the creation of a stable seaweed bed.

When the erosion prevention zone is composed of one or a plurality of protrusions, the erosion prevention zone can be easily provided. For example, in this case, the protrusion having the function of hooking the seed yarn is provided. By letting the hooked yarn pass between the projections that constitute the erosion prevention zone,
Since the invasion of the herbivores is hindered by the protrusions and the damage to the damage can be easily prevented, the algae can be cultivated and the subsequent formation of the alga beds can be performed reliably and promptly. For this purpose, for example, if a plurality of protrusions are arranged at intervals such that herbivores such as sea urchins, abalones, and turtles cannot enter, the function of preventing the damage to food can be further ensured.

Further, a reverse slope is formed on the first projection for retaining the seed yarn, with the surface facing the growth member main body being exposed, and the reverse slope and the surface of the growth member main body are formed. If the seed thread is hooked in the space, it can be easily and firmly hooked.

As an intermediate growing method under conditions more favorable than the intermediate growing of algae on land or on the sea floor, a growing member is suspended on a floating material such as a raft or a buoy floating on the water surface (sea surface), and the growing member is used as a growing member. Algae are grown underwater (under the sea) until they become alive and become less likely to suffer damage, and a growing member that has fully grown algae has been transferred to a member that has an anchoring function consisting of heavy objects that should be laid on the sea floor. In the case of adopting the method of performing the first step, a contact path for attaching a suspending tool for suspending the growing member main body in water to a surface of the growing member main body at a position avoiding the protruding portion is formed. Since the seed thread hung on the projections and passed between the second projections is not cut off by interfering with the suspending tool, when the growing member is suspended in the sea to perform intermediate growth of algae, The problem that the algae are washed away It can be. In this case, a tying tool is inserted into the through hole formed on the attachment path, and the tying tool is attached to the attachment path using the tying element so as to restrain the hanging tool that sandwiches the growth member body in the thickness direction. If this is the case, it is possible to more securely fix the suspension to the growing member by a simple method.

Furthermore, irrespective of the presence or absence of the abutment path, if a through-hole penetrating the growth member main body in the thickness direction is formed in a portion of the growth member main body avoiding the projection, the growth from the seed yarn can be achieved. It is easy to suspend the growing member in the sea using the through hole and perform intermediate growing of the algae, or attach it to the member with the anchor function described above, so as not to damage the algae moving on the growing member body It is possible to do.

Further, by providing fixing means on the growing member main body for fixing the seed yarn hung on the projection, the fixing of the seed yarn to the growing member is further ensured, and the prevention of algae runoff is more effective. It can be aimed at.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view schematically showing the growing member of the embodiment at a center in a width direction.

FIG. 3 is an explanatory view schematically showing a method of manufacturing the growth member.

FIG. 4 is an explanatory view of the manufacturing method.

FIG. 5 is an explanatory view showing a method of growing algae and a method of forming a seaweed bed using the growing member.

FIG. 6 is an explanatory view showing a method of forming the seaweed bed and a method of maintenance.

FIG. 7 is an enlarged perspective view showing the growing member suspended from a rope.

FIG. 8 is an enlarged sectional view showing a pedestal for attaching the growing member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Growth member 2 ... Pedestal 3 ... Seed thread 4 ... Rope (hanging tool) 5 ... Raft 6 ... Binding tool (binding band) 11 ... Growth member main body 11a ... Surface 12 ... Fixing member (fixing means) 111 ... Through hole 113 ... Contact path 114 ... First protrusion 114a ... Reverse slope 115 ... Second protrusion (corrosion prevention zone)

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Tatsuharu Tanahashi 7-55 Minamionkajima, Taisho-ku, Osaka City Sumitomo Osaka Cement Co., Ltd. Cement Concrete Research Laboratory (72) Inventor Hiroaki Suzuki Taisho-ku, Osaka-shi 7-55 Minamienkajima Sumitomo Osaka Cement Co., Ltd. Cement Concrete Research Laboratory F-term (reference) 2B003 AA01 BB01 CC03 DD01 EE04

Claims (8)

[Claims] Claims: 1. A growing member main body for growing algae, wherein one or a plurality of projections capable of hanging a seed thread to which algae spores are attached are provided on a surface of the growing member main body. An algae cultivation member, comprising: 2. The algae cultivation member according to claim 1, wherein an anti-feeding zone capable of inhibiting the invasion of herbivores is formed on the surface. 3. The algae growing member according to claim 2, wherein said erosion prevention zone is formed of one or a plurality of projections. 4. A portion of the first projection having the reverse slope, wherein the first projection having a function of hooking the seed yarn has a reverse slope for exposing a surface facing the growth member main body. The algae growing member according to claim 1, 2 or 3, wherein a space is formed between the seed material and the surface of the growing member main body. 5. An abutment path for attaching a suspender for suspending the breeding member body in water to a surface of the breeding member body at a position avoiding the protrusion. The algal breeding member according to claim 1, 2, 3, or 4. 6. A through hole which penetrates the growth member main body in the thickness direction is formed on the contact path, and a hanging tool which is in contact with the contact path is grown by a binding tool inserted through the through hole. The algae growing member according to claim 5, wherein the member body can be restrained while being sandwiched in the thickness direction. 7. A through-hole which penetrates the growth member main body in the thickness direction is formed at a portion of the growth member main body avoiding the projection.
A growing member of the algae according to the above. 8. The growing member main body is provided with fixing means for fixing said seed yarn.
The member for growing algae according to 3, 4, 5, 6, or 7.