Seaweed seedling fixing tool, seaweed bed forming set, and seaweed bed forming method

Abstract

To provide a seaweed bed-fixing tool, a seaweed bed-forming set and a seaweed bed-forming method, capable of firmly fixing seaweed seedlings to a transplanting place.SOLUTION: This device is provided with an alga seed holding body made of a soft material and having a plate shape and provided with a through-hole through which the alga seed passes and an alga seed insertion slit into which the alga seed is inserted from the peripheral edge toward the through-hole, an alga seed holding body covering body made of a hard material and having a plate shape and set to a size covering the alga seed holding body and provided with an alga seed insertion port part through which the alga seed passes, and a fixing means for fixing the alga seed holding body holding the alga seed at a proper place in the sea.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a seaweed seedling fixing device, a seaweed bed formation set, and a seaweed bed formation method, and in particular to a device that can firmly fix seaweed seedlings in appropriate locations in the sea, prevents predation of the fixed seaweed seedlings by marine organisms, and ensures that the fixed seaweed seedlings are stably maintained for a long period of time. [Background technology]

[0002] The configuration of this type of algae seedling fixing device is disclosed, for example, in Patent Document 1. In the case of the transplantation aid described in Patent Document 1, large algae or algae precursors are held in a three-dimensional reticulated fiber material assembly, and the three-dimensional reticulated fiber material assembly is fastened to an underwater reef by nails. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2020-127379 Summary of the Invention [Problem to be solved by the invention]

[0004] The above conventional configuration has the following problems. In other words, in the case of the invention described in Patent Document 1, the macroalgae or algae precursors are held in a three-dimensional mesh fiber aggregate, but this does not hold the macroalgae or algae precursors sufficiently, and there is a problem that the macroalgae or algae precursors are dislodged by tidal currents or wave forces. Additionally, there is a problem in that the transplanted macroalgae or algae precursors are eaten by fish.

[0005] The present invention has been made based on these points, and its purpose is to provide a seaweed seedling fixing device, a seaweed bed formation set, and a seaweed bed formation method that can firmly fix seaweed seedlings in appropriate locations in the sea, prevent the fixed seaweed seedlings from being preyed on by marine organisms, and enable the fixed seaweed seedlings to be stably maintained for a long period of time. [Means for solving the problem]

[0006] In order to solve the above problem, the algae seedling fixing device according to claim 1 of the present invention is characterized by comprising: an algae seedling holder made of a soft material, in the shape of a plate, with through holes through which the algae seedlings pass and provided with algae seedling insertion slits through which the algae seedlings are inserted from the periphery toward the through holes; an algae seedling holder cover made of a hard material, in the shape of a plate, sized to cover the algae seedling holder and provided with an algae seedling insertion opening through which the algae seedlings pass; and fixing means for covering the algae seedling holder holding the algae seedlings with the algae seedling holder cover and fixing it in an appropriate position in the sea. Furthermore, the algae seedling fixing device according to claim 2 is characterized in that in the algae seedling fixing device according to claim 1, the algae seedling holder covering body is one piece, and this single algae seedling holder covering body covers the algae seedling holder holding the algae seedlings. Furthermore, the algae seedling fixing device according to claim 3 is characterized in that in the algae seedling fixing device according to claim 1, the algae seedling holder covering body is made of two pieces, and these two algae seedling holder covering bodies sandwich the algae seedling holder holding the algae seedlings from above and below. Furthermore, the algae seedling fixing device according to claim 4 is the algae seedling fixing device according to claim 3, characterized in that the algae seedling holder, which holds the algae seedlings with the two algae seedling holder covering bodies, is sandwiched from above and below and fixed with binding members. Moreover, the algae seedling fixing device according to claim 5 is the algae seedling fixing device according to claim 1, characterized in that the algae seedling holder is made of a soft foam. The algae seedling fixing device according to claim 6 is the algae seedling fixing device according to claim 1, characterized in that the algae seedling holder cover is made of hard resin. Furthermore, the algae seedling fixing device according to claim 7 is characterized in that in the algae seedling fixing device according to claim 1, the algae seedling holder cover body is lattice-shaped, and a part of it is cut out as the algae seedling insertion opening portion. The algae seedling fixing device according to claim 8 is characterized in that in the algae seedling fixing device according to claim 1, the fixing means is a nail. The algae seedling fixing device according to claim 9 is characterized in that in the algae seedling fixing device according to claim 1, the fixing means is a binding member. Furthermore, a seaweed bed formation set according to claim 10 is characterized by comprising an algae seedling fixing device according to any one of claims 1 to 9, and artificial algae for protecting seaweed seedlings, which is placed so as to surround the seaweed seedlings fixed by the algae seedling fixing device and protects the seaweed seedlings. Furthermore, the seaweed bed formation set according to claim 11 is characterized in that in the seaweed bed formation set described in claim 10, the artificial algae for protecting seaweed seedlings is composed of a strip-shaped base and a number of strip-shaped pieces extending from the strip-shaped base at predetermined intervals. Furthermore, the seaweed bed formation set according to claim 12 is characterized in that, in the seaweed bed formation set described in claim 11, another lattice-shaped belt-shaped member is detachably attached to the belt-shaped base, and the artificial seaweed for protecting seaweed seedlings is fixed in an appropriate position in the sea via this other belt-shaped member. Furthermore, the seaweed bed formation set according to claim 13 is characterized in that, in the seaweed bed formation set according to claim 10, the artificial algae for protecting seaweed seedlings are cut out in such a manner that two identical pieces of artificial algae for protecting seaweed seedlings are placed on both ends of a single rectangular soft foam sheet, with the strip-shaped bases of the two identical pieces of artificial algae for protecting seaweed seedlings arranged alternately on top of each other. Furthermore, the method for forming a seaweed bed according to claim 14 is characterized by comprising: a seaweed seedling fixing step of fixing seaweed seedlings in a suitable position in the sea with a seaweed seedling fixing device consisting of a seaweed seedling holder, a seaweed seedling holder cover, and fixing means; and a seaweed seedling protection artificial algae fixing step of fixing artificial algae for protecting the seaweed seedlings that are fixed in a suitable position in the water or that protect the fixed seaweed seedlings. Furthermore, a method for forming a seaweed bed according to claim 15 is the method for forming a seaweed bed according to claim 14, wherein the seaweed seedling fixing step comprises an algae seedling setting step of inserting the seaweed seedlings into the through-holes of the algae seedling holder through an algae seedling insertion slit, and an algae seedling holder cover body overlapping step of covering the algae seedling holder while inserting the seaweed seedlings into the algae seedling holder cover body through the algae seedling insertion opening, and a seaweed seedling fixing step for fixing the seaweed seedlings in a suitable position in the sea via the seaweed seedling holder covering body and the seaweed seedling holder. Furthermore, a method for forming a seaweed bed according to claim 16 is the method for forming a seaweed bed according to claim 15, characterized in that the seaweed seedling setting step is carried out in advance on a ship or on land. Furthermore, a method for forming a seaweed bed according to claim 17 is the method for forming a seaweed bed according to claim 15, characterized in that the seaweed seedling setting step and the seaweed seedling holder covering body lamination step are carried out in advance on a ship or on land. Furthermore, the method for forming a seaweed bed according to claim 18 is the method for forming a seaweed bed according to claim 17, characterized in that the seaweed seedling holder covering bodies are two pieces, and the seaweed seedling holder holding the seaweed seedlings is sandwiched between these two seaweed seedling holder covering bodies from above and below, and secured together with a binding member. [Effects of the Invention]

[0007] As described above, the algae seedling fixing device according to claim 1 of the present application is configured to include an algae seedling holder made of a soft material, in the shape of a plate, with through holes through which the algae seedlings pass and provided with algae seedling insertion slits through which the algae seedlings are inserted from the periphery toward the through holes; an algae seedling holder cover made of a hard material, in the shape of a plate, sized to cover the algae seedling holder and provided with an algae seedling insertion opening through which the algae seedlings pass; and fixing means for covering the algae seedling holder holding the algae seedlings with the algae seedling holder cover and fixing it in an appropriate position in the sea, thereby making it possible to firmly fix the algae seedlings in an appropriate position in the sea. Furthermore, according to the algae seedling fixing device of claim 2, in the algae seedling fixing device of claim 1, the algae seedling holder covering body is one piece, and this single algae seedling holder covering body covers the algae seedling holder holding the algae seedling, so the algae seedlings can be firmly fixed in place in the sea. Furthermore, according to the algae seedling fixing device of claim 3, in the algae seedling fixing device of claim 1, the algae seedling holder covering body is two pieces, and these two algae seedling holder covering bodies sandwich the algae seedling holder holding the algae seedlings from above and below, so that the algae seedlings are held more firmly. Furthermore, according to the algae seedling fixing device of claim 4, in the algae seedling fixing device described in claim 3, the algae seedling holder, which holds the algae seedlings with the two algae seedling holder covering bodies, is sandwiched from above and below and fixed with binding members, so that the algae seedlings are held more firmly. According to the algae seedling fixing device of claim 5, in the algae seedling fixing device of claim 1, the algae seedling holder is made of a soft foam material, so that the work of attaching the algae seedlings is easy. According to the algae seedling fixing device of claim 6, in the algae seedling fixing device of claim 1, the algae seedling holder covering body is made of hard resin, so that the algae seedling holder holding the algae seedlings can be firmly fixed. Furthermore, according to the algae seedling fixing device of claim 7, in the algae seedling fixing device of claim 1, the algae seedling holder cover body is lattice-shaped, and a part of it is cut out as the algae seedling insertion opening, so that the fixing work can be performed using the fixing means by utilizing the lattice. According to the algae seedling fixing device of claim 8, in the algae seedling fixing device of claim 1, the fixing means is a nail, so the fixing work is also simple. According to the algae seedling fixing device of claim 9, in the algae seedling fixing device of claim 1, the fixing means is a binding member, so the fixing work is simple. Furthermore, according to the seaweed bed formation set of claim 10, the set is configured to include an algae seedling fixing device according to any one of claims 1 to 9, and artificial algae for protecting algae seedlings that are placed to surround the algae seedlings fixed by the algae seedling fixing device and protect the algae seedlings, thereby preventing predation of the fixed algae seedlings by marine organisms and allowing the fixed algae seedlings to be stably maintained for a long period of time. Furthermore, according to the seaweed bed formation set of claim 11, in the seaweed bed formation set of claim 10, the artificial algae for protecting seaweed seedlings is composed of a strip-shaped base and a number of strip-shaped pieces extending from the strip-shaped base at predetermined intervals, thereby preventing predation of the fixed seaweed seedlings by marine organisms and allowing the fixed seaweed seedlings to be stably maintained for a long period of time. Furthermore, according to the seaweed bed formation set of claim 12, in the seaweed bed formation set of claim 11, another lattice-shaped belt-shaped member is detachably attached to the belt-shaped base, and the artificial algae for protecting seaweed seedlings is configured to be fixed in an appropriate position in the sea via this other belt-shaped member, so that the fixation of the artificial algae for protecting seaweed seedlings is also more secure. According to the seaweed bed formation set of claim 13, in the seaweed bed formation set of claim 10, the artificial algae for protecting seaweed seedlings is formed by arranging the strip-shaped bases of two identical pieces of artificial algae for protecting seaweed seedlings at both ends of a single rectangular soft foam sheet, overlapping them so that the strip pieces are positioned alternately, and cutting out two identical pieces of artificial algae for protecting seaweed seedlings in this arrangement, so that artificial algae for protecting seaweed seedlings can be obtained efficiently. Furthermore, according to the method for forming a seaweed bed according to claim 14, the method comprises a seaweed seedling fixing step of fixing seaweed seedlings in an appropriate position in the sea using an seaweed seedling fixing device consisting of an seaweed seedling holder, an seaweed seedling holder cover, and fixing means, and a seaweed seedling protection artificial algae fixing step of fixing artificial algae for protecting the seaweed seedlings that are fixed in an appropriate position in the water or that protect the fixed seaweed. This makes it easy to obtain a desired seaweed bed. Furthermore, according to the method for forming a seaweed bed of claim 15, in the method for forming a seaweed bed of claim 14, the seaweed seedling fixing step comprises an algae seedling setting step of inserting the seaweed seedlings into the through-holes of the algae seedling holder through the algae seedling insertion slits, an algae seedling holder covering body overlapping step of inserting the seaweed seedlings into the algae seedling holder covering body through the algae seedling insertion opening and covering the algae seedling holder, and an algae seedling fixing step of fixing the seaweed seedlings in an appropriate position in the sea via the algae seedling holder covering body and the algae seedling holder, so that a desired seaweed bed can be easily obtained. Furthermore, according to the method for forming a seaweed bed of claim 16, in the method for forming a seaweed bed of claim 15, the seaweed seedling setting process is carried out in advance on a ship or on land, thereby making it possible to make work underwater more efficient and easier. Furthermore, according to the method for forming a seaweed bed of claim 17, in the method for forming a seaweed bed of claim 15, the seaweed seedling setting process and the seaweed seedling holder covering body polymerization process are carried out in advance on a ship or on land, thereby making it possible to make work underwater more efficient and easier. Furthermore, according to the method for forming a seaweed bed of claim 18, in the method for forming a seaweed bed of claim 17, the seaweed seedling holder covering bodies are two pieces, and these two seaweed seedling holder covering bodies sandwich the seaweed seedling holder holding the seaweed seedlings from above and below, and are fixed with binding members, thereby making it possible to make work underwater more efficient and easier. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing a first embodiment of the present invention, and is a plan view showing the configuration of an algae seedling holder. [Figure 2] FIG. 1 is a diagram showing a first embodiment of the present invention, and is a plan view showing the configuration of an algae seedling holder covering body. [Figure 3] FIG. 1 is a diagram showing a first embodiment of the present invention, and is a plan view showing a state in which an algae seedling holder is covered with an algae seedling holder cover. [Figure 4] FIG. 1 is a diagram showing a first embodiment of the present invention, and is a front view of a nail. [Figure 5] FIG. 1 is a diagram showing a first embodiment of the present invention, and is a plan view of a washer. [Figure 6] FIG. 1 is a diagram showing a first embodiment of the present invention, and is a front view showing a state in which an algae seedling is fixed to an underwater reef by an algae seedling fixing device. [Figure 7] FIG. 1 is a diagram showing the first embodiment of the present invention, and is a front view showing the state in which a seaweed bed has been formed using the seaweed bed fixing set. [Figure 8] FIG. 1 is a diagram showing the first embodiment of the present invention, and is a side view showing the state in which a seaweed bed has been formed by the seaweed bed fixing set. [Figure 9]FIG. 9 is a view showing the first embodiment of the present invention, taken along the line IX-IX in FIG. 7. [Figure 10] FIG. 1 is a diagram showing a first embodiment of the present invention, and is a plan view of a belt-shaped member for fixing artificial algae for protecting algae seedlings. [Figure 11] FIG. 1 is a diagram showing the first embodiment of the present invention, and is a plan view showing two pieces of artificial algae for protecting algae seedlings being cut out from a single sheet. [Figure 12] FIG. 10 is a diagram showing a second embodiment of the present invention, and is a plan view showing a state in which an algae seedling holder is sandwiched between two algae seedling holder covering bodies. [Figure 13] FIG. 10 is a diagram showing a second embodiment of the present invention, and is a front view showing a state in which an algae seedling is fixed to an underwater reef by an algae seedling fixing device. DETAILED DESCRIPTION OF THE INVENTION

[0009] A first embodiment of the present invention will be described below with reference to FIGS. First, as shown in Figure 1, there is an algae seedling fixing device 1, which is composed of an algae seedling holder 3 and an algae seedling holder cover 5. The algae seedling holder 3 is made of a soft foam material, and as shown in Figure 2, is square in plan view. A through-hole 7 is drilled in the center of the algae seedling holder 3. A single algae seedling insertion slit 9 is formed from the outer periphery of one side of the square of the algae seedling holder 3 toward the through-hole 7. An example of the soft foam material is a polyethylene stretched film manufactured by Sekisui Chemical Co., Ltd., in which high carbon content polyethylene foam is laminated on both sides of the film.

[0010] As shown in Figure 6, the stem 13 of the algae seedling 11 is inserted into the through-hole 7. The algae seedling 11 is composed of the stem 13, leaves 15, and roots 17. The stem 13 is inserted into the through-hole 7 through the algae seedling insertion slit 9.

[0011] The algae seedling holder cover 5 is made of a hard resin material and, as shown in Fig. 3, is lattice-shaped with 3 vertical and 3 horizontal grids 21 in plan view. Parts of the grids 21 are cut out to form algae seedling insertion openings 23. The algae seedling holder cover 5 is square in plan view and, as shown in Fig. 1, is larger than the algae seedling holder 3 so that it can cover the algae seedling holder 3. The hard resin material is, for example, a hard resin fence material with an appropriate mesh (grid spacing) that prevents animals from entering.

[0012] As shown in Figure 1, when the algae seedling holder 3 is covered with the algae seedling holder cover 5, the algae seedling insertion opening 23 of the algae seedling holder cover 5 is shifted by 90° from the position of the algae seedling insertion slit 9 of the algae seedling holder 3 so as not to overlap. This is to prevent the stems 13 of the held algae seedlings 11 from accidentally slipping out of the algae seedling insertion slit 9. It is acceptable for the algae seedling insertion slit 9 and the algae seedling insertion opening 23 to be misaligned, and they may be shifted by 180°.

[0013] As shown in Figure 6, the algae seedling holder 3 holding the algae seedlings 11 is covered with the algae seedling holder cover 5, and is fixed to an underwater reef 41 with nails 31 and washers 33. The nails 31 are as shown in Figure 4, and the washers 33 are as shown in Figure 5. The washers 33 may be made of a soft material, for example, felt. The fixing positions with the nails 31 and washers 33 are, for example, the positions of two diagonally opposite grids 21, 21 in Figure 1. The number of fixing points can be increased or decreased depending on the underwater conditions. The material of the washer 33 is not limited to a soft material, but may be a hard material.

[0014] As shown in Figures 7 to 9, there is a seaweed bed formation set 51, which is composed of the seaweed seedling fixing device 1 already described and artificial algae 53 for protecting seaweed seedlings. The artificial algae 53 for protecting seaweed seedlings is composed of a belt-shaped base 55, a number of strip pieces 57, and another belt-shaped member 59. The strip pieces 57 are integral with the belt-shaped base 55 and protrude and extend in a comb-like shape at predetermined intervals and by a predetermined length from the belt-shaped base 55. As shown in Figure 10, the belt-shaped member 59 is shaped like a lattice, with a plurality of lattices 61 connected in one direction. The belt-shaped member 59 is layered on the belt-shaped base 55 and fixed in place with a binding band 63. The artificial algae 53 for protecting the seedlings is made of a soft foam material, for example, a polyethylene stretched film manufactured by Sekisui Chemical Co., Ltd., with high carbon content polyethylene foam laminated on both sides. The belt-shaped member 59 is made of a hard resin material, for example, a hard resin fence material with an appropriate mesh (grid spacing) to prevent animals from entering.

[0015] As shown in Figure 7, the artificial algae 53 for protecting algae seedlings having the above-mentioned configuration are fixed in multiple rows at predetermined intervals to the underwater reef 41. The bolts 31 and washers 33 of the algae seedling fixing device 1 already explained are used to fix the artificial algae 53 for protecting algae seedlings to the reef 41. The algae seedlings 11 are fixed at a predetermined pitch between the artificial algae 53 for protecting algae seedlings by the algae seedling fixing device 1. Figure 9 is a view taken along the arrows IX-IX in Figure 7, showing the state in which the algae seedlings 11 are fixed by the algae seedling fixing device 1. The fixing points using the nails 31 and nuts 33 are two diagonally opposite points. In addition, the algae seedlings 11 are not shown in FIG.

[0016] As shown in Figure 10, the strip-shaped base 55 and multiple strip pieces 57 of the artificial algae 53 for protecting seaweed seedlings are formed as a single piece in a flat plane, and when this is fixed to the reef 41 in the state shown in Figure 7, the strip pieces 57 are bent by buoyancy and float upward.

[0017] As shown in FIG. 11, the artificial algae 53 for protecting algae seedlings is cut out by, for example, arranging band-like bases 55, 55 of two identical artificial algae 53, 53 for protecting algae seedlings at both ends of a single rectangular soft foam sheet 71, arranging the strip piece 55 of one artificial algae 53 for protecting algae seedlings between the strip pieces 53, 53 of the other artificial algae 53 for protecting algae seedlings, and cutting along a cutting line 73.

[0018] Next, a method for forming a seaweed bed using the seaweed bed forming set 51 will be described. First, the seaweed seedlings 11 are set in the seaweed seedling holder 3. That is, as shown in Fig. 6, the stems 13 of the seaweed seedlings 11 are inserted into the through holes 7 through the seaweed seedling insertion slits 9. This setting work is carried out in advance on a ship or on land.

[0019] Meanwhile, underwater, the artificial algae 53 for protecting algae seedlings is fixed in advance. As shown in Figure 7, a predetermined length of artificial algae 53 for protecting algae seedlings is fixed in multiple rows with a predetermined interval between them. At this time, another belt-shaped member 59 is placed on the belt-shaped base 55 of the artificial algae 53 for protecting algae seedlings and fixed with a cable tie 63 on board the ship or on land.

[0020] The artificial algae 53 for protecting seaweed seedlings is carried into the sea and fixed at a predetermined position on the reef 41 using nails 31 and washers 33. The strips 57 of the artificial algae 53 for protecting seaweed seedlings are bent by buoyancy and float to imitate seaweed.

[0021] Next, the algae seedling holders 3 with the algae seedlings 11 set in advance are fixed in predetermined positions between the rows of artificial algae 53 for protecting algae seedlings, using the algae seedling holder cover 5, nails, and washers 33. That is, as shown in Figures 6 and 9, the algae seedling holder cover 5 is placed on top of the algae seedling holders 3 with the algae seedlings 11 set in them, and nails 31 are driven into the reef 41 via washers 33 at two diagonal points.

[0022] As described above, the present embodiment can provide the following effects. First, the seaweed seedlings 11 can be stably held for a long period of time because the seaweed seedlings 11 are firmly held and fixed to the reef 41 by the seaweed seedling holder 3, the seaweed seedling holder cover 5, the nails 31, the washers 33 and the washers 33. Furthermore, since the algae seedling insertion slit 9 is formed, the work of inserting the algae seedling 11 into the through hole 7 of the algae seedling holder 3 is also easy. Similarly, since the algae seedling insertion opening 23 is provided, the operation of inserting the algae seedling 11 into the center of the algae seedling holder cover body 5 is also easy. In addition, the position of the algae seedling insertion opening 23 of the algae seedling holder cover 5 is shifted by 90° relative to the algae seedling insertion slit 9 of the algae seedling holder 3, so that the algae seedlings 11 can be prevented from accidentally falling out of the algae seedling insertion slit 9. Furthermore, the place where the seaweed seedlings 11 are fixed to the reef 41 by the seaweed seedling fixing device 1 is sandwiched between artificial seaweeds 53, 53 for protecting the seaweed seedlings, so that it is possible to prevent the invasion of marine organisms and the predation of the seaweed seedlings 11 by marine organisms. Furthermore, the artificial algae 53 for protecting seaweed seedlings is fixed to the reef 41 by overlapping the belt-shaped member 59 on the belt-shaped base 55, so that the belt-shaped base 55 and therefore the artificial algae 53 for protecting seaweed seedlings are fixed more firmly to the reef 41. Furthermore, since the work of setting the seaweed seedlings 11 in the seaweed seedling holder 3 is carried out in advance on board a ship or on land, the work in the sea can be simplified and facilitated.

[0023] Next, a second embodiment of the present invention will be described with reference to Figures 11 and 12. In the first embodiment, an example was given in which one algae seedling holder 3 is covered by one algae seedling holder cover body 5, but in this second embodiment, an example will be given in which one algae seedling holder 3 is sandwiched between two algae seedling holder cover bodies 5.

[0024] As shown in Figures 11 and 12, one algae seedling holder 3 is sandwiched between two algae seedling holder covers 5 and secured with binding bands 81, 81. This work is not carried out in the sea, but is carried out in advance, for example, on a ship or on land. The algae seedling holder is then brought into the sea and secured in the state shown in Figure 12. The other configurations are the same as those of the first embodiment, and the same parts in the drawings are denoted by the same reference numerals and their explanations are omitted.

[0025] Therefore, it is possible to achieve the same effects as in the first embodiment, and also to facilitate the work of fixing the algae seedlings 11. That is, by carrying out beforehand on board a ship or on land not only the work of setting the algae seedlings 11 in the algae seedling holder 3 but also the work of fixing them with the algae seedling holder cover 5, the work in the sea is greatly simplified and facilitated. Furthermore, the seaweed seedlings 11 are not only held by the seaweed seedling holder 3 but are also sandwiched between a pair of seaweed seedling holder cover bodies 5, 5 and fixed with a binding band 71, and are transported into the sea in this state, so that the seaweed seedlings 11 are securely held.

[0026] The present invention is not limited to the first and second embodiments. First, in the first and second embodiments, an example was given in which artificial algae for protecting algae seedlings is fixed to an underwater reef in advance, and the algae seedlings are then fixed in place with the algae seedling fixing device, but the present invention is not limited to this. It is also possible to first fix the algae seedlings with the algae seedling fixing device, and then fix the artificial algae for protecting algae seedlings so that they surround the algae seedlings. In the first and second embodiments, the algae seedling holder cover was explained as being made of a lattice-shaped member, but this is not limited to this and it may also be made of a solid plate-shaped member. Additionally, the illustrated configuration is merely an example. [Industrial Applicability]

[0027] The present invention relates to a seaweed seedling fixing device, a seaweed bed formation set, and a seaweed bed formation method, and in particular to a device that can firmly fix seaweed seedlings in appropriate locations in the sea, prevents predation of the fixed seaweed seedlings by marine organisms, and allows the fixed seaweed seedlings to be stably maintained for a long period of time, and is suitable for transplanting Ecklonia cava and Eisenia bicolor, for example. [Explanation of symbols]

[0028] 1 Algae seedling fixing device 3 Algae seedling holder 5 Algae seedling holder cover body 7 through hole 9 Seaweed insertion slit 11 Algae seedlings 21 Lattice 23 Seaweed seedling insertion port 31 Nail (fixing means) 33 Washer (fixing means) 53 Artificial algae for protecting algae seedlings 55 Band base 57 Strips 59 Belt-shaped member 63 Cable ties (binding materials) 71 seats 73 Cutting line 81 Cable ties (binding materials)

Claims

1. a plate-shaped algae seedling holder made of a soft material, having through holes through which the algae seedlings pass and having algae seedling insertion slits through which the algae seedlings are inserted from the periphery toward the through holes; a plate-shaped algae seedling holder cover made of a hard material, sized to cover the algae seedling holder and having an algae seedling insertion opening through which the algae seedlings pass; a fixing means for covering the algae seedling holder holding the algae seedlings with the algae seedling holder cover and fixing it in a suitable position in the sea; A seaweed seedling fixing device characterized by comprising:

2. The algae seedling fixing device according to claim 1, The algae seedling fixing device is characterized in that the algae seedling holder covering body is one piece, and the algae seedling holder holding the algae seedlings is covered with this one piece of algae seedling holder covering body.

3. The algae seedling fixing device according to claim 1, The algae seedling fixing device is characterized in that the algae seedling holder covering body is made of two pieces, and the algae seedling holder holding the algae seedlings is sandwiched between these two algae seedling holder covering bodies from above and below.

4. The algae seedling fixing device according to claim 3, The algae seedling fixing device is characterized in that the algae seedling holder holding the algae seedlings is sandwiched from above and below by the two algae seedling holder covering bodies and fixed with a binding member.

5. The algae seedling fixing device according to claim 1, The algae seedling fixing device is characterized in that the algae seedling holder is made of soft foam.

6. The algae seedling fixing device according to claim 1, The algae seedling fixing device is characterized in that the algae seedling holder cover is made of hard resin.

7. The algae seedling fixing device according to claim 1, The algae seedling fixing device is characterized in that the algae seedling holder cover is formed in a lattice shape, a part of which is cut out as the algae seedling insertion opening.

8. The algae seedling fixing device according to claim 1, The algae seedling fixing device is characterized in that the fixing means is a nail.

9. The algae seedling fixing device according to claim 1, The algae seedling fixing device is characterized in that the fixing means is a binding member.

10. The algae seedling fixing tool according to any one of claims 1 to 9, artificial algae for protecting the algae seedlings, which is installed so as to surround the algae seedlings fixed by the algae seedling fixing device and protects the algae seedlings; A seaweed bed formation set comprising:

11. The seaweed bed forming set according to claim 10, The artificial algae for protecting seaweed seedlings is characterized in that it is composed of a strip-shaped base and a number of strip-shaped pieces extending from the strip-shaped base at predetermined intervals.

12. The seaweed bed forming set according to claim 11, This seaweed bed formation set is characterized in that another strip-shaped member in a lattice shape is detachably attached to the strip-shaped base, and the artificial seaweed for protecting seaweed seedlings is fixed in an appropriate position in the sea via this other strip-shaped member.

13. The seaweed bed forming set according to claim 10, The artificial algae for protecting seaweed seedlings is characterized in that the two identical pieces of artificial algae for protecting seaweed seedlings are cut out in such an arrangement by placing strip-shaped bases of two identical pieces of artificial algae for protecting seaweed seedlings on both ends of a single rectangular soft foam sheet and overlapping them so that the strip pieces of each piece are positioned alternately.

14. a seaweed seedling fixing step of fixing the seaweed seedlings in a suitable position in the sea with an seaweed seedling fixing device comprising a seaweed seedling holder, a seaweed seedling holder cover, and fixing means; a fixing step of fixing artificial algae for protecting algae seedlings in a suitable position in water or for protecting the fixed algae seedlings; A method for forming a seaweed bed, characterized by:

15. The method for forming a seaweed bed according to claim 14, The algae seedling fixing step includes a seedling setting step of inserting the algae seedling into the through-hole of the algae seedling holder through the algae seedling insertion slit; a step of laminating the algae seedling holder cover body to cover the algae seedling holder while inserting the algae seedling into the algae seedling holder cover body through an algae seedling insertion opening; a seaweed seedling fixing step of fixing the seaweed seedling in a suitable position in the sea via the seaweed seedling holder cover and the seaweed seedling holder; A method for forming a seaweed bed, comprising:

16. The method for forming a seaweed bed according to claim 15, The method for forming a seaweed bed is characterized in that the seaweed seedling setting step is carried out in advance on a ship or on land.

17. The method for forming a seaweed bed according to claim 15, The method for forming a seaweed bed is characterized in that the step of setting the seaweed seedlings and the step of laminating the seaweed seedling holder and the covering body are carried out in advance on a ship or on land.

18. The method for forming a seaweed bed according to claim 17, The method for forming a seaweed bed is characterized in that the seaweed seedling holder covering bodies are two pieces, and these two seaweed seedling holder covering bodies sandwich the seaweed seedling holder holding the seaweed seedlings from above and below, and are fixed together with a binding member.

Images