JP3985984B2 - Structure for creating seaweed beds - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a technique for improving a marine environment in order to create seaweed beds (also referred to as underwater forests) centered on seaweeds and to bring about the reproduction of seafood, and The present invention relates to a structure for constructing a seaweed bed. Specifically, a structure such as a concrete block (referred to as a “skeletal structure” in the present specification) including a columnar portion and capable of functioning as a seaweed settlement floor.,It is composed of a seaweed seedling carrying tool that can be easily attached to this skeletal structure, and by reliably preventing the seaweed seedling carrying tool after the attachment from shifting due to ocean currents, It helps early settlement on the skeletal structure, and the seaweed seedlings are used as the core to grow seaweed around and create a seaweed bed.
[0002]
[Prior art]
  Currently, the promotion of coastal fisheries is an important issue in Japan, and the growth and aquaculture of seafood and seaweed are being promoted. However, in the coastal areas, seaweed beds disappear due to various causes, and the so-called “burning” phenomenon, in which seafood that uses the seaweed beds as a place of life, drastically decreases, is spreading throughout the country.
[0003]
  In general, seaweed grows on the relatively shallow rock surface and propagates there. However, the habitat is extremely bad in the sea-burning sea area because there is no mother algae nearby, and there is no source of spores, and the rocks are covered with lime algae, making it difficult for seaweed to settle. In addition, seaweeds are originally difficult to grow in sandy mud. Therefore, it is important to introduce seaweed in the regeneration of seaweed beds in such a seawater-burning sea area and the construction of seaweed beds in sandy mud sea areas.
[0004]
  Conventionally, as a method for constructing a seaweed bed, a method is known in which a culture body with various devices is installed in the sea, and the seaweed is created after the seaweed naturally settles in the culture body (actual fairness). 3-56199, Japanese Utility Model Publication No. 4-71448). However, since these conventional methods depend on natural settlement, the formation state of seaweed in the early stage of creation is not only greatly influenced by uncertain natural factors, but also the creation efficiency such as the time taken for creation. There was a fundamental problem in terms of certainty.
[0005]
  Therefore, the seedlings of seedlings used in seaweed cultivation are preliminarily seeded with seaweed seedlings, and these seedlings are wound around the appropriate structure of the building structure made of concrete blocks and set in the sea. Thus, an attempt has been made to cause seaweed to grow on the surface of the structure for construction using the seaweed seedling as a nucleus. However, this conventional method is extremely difficult and unstable to attach the seedlings to the construction structure, and is particularly difficult to apply to the construction structure already installed in the sea. It was. In addition, even after attachment, if there is any problem with the attachment state of the seedlings and seedlings to the construction structure, the attachment state deteriorates due to the thin thread shape and unstable shape. There is a disadvantage that it expands and flows out easily, especially because the seedling thread itself has almost no strength, so the seaweed seedling must be attached in a very small juvenile state, and it does not grow smoothly In many cases, the success rate of creation was low. For this reason, the actual situation is that the conventional method has not been put into practical use as a method for introducing seaweed seedlings.
[0006]
  Therefore, the present applicant forms a ring-shaped carrier from an elastic material such as a synthetic resin, and in the state where the seaweed seedling is previously carried on the carrier, the columnar portion of the structure for building (skeleton structure) is formed. It has already been proposed to cause seaweed seedlings to grow on the construction structure by attaching them, and to create seaweed beds using the seeded seaweed seedlings as a core (see Japanese Patent Application Laid-Open No. 10-136913). In the seaweed bed construction using this seaweed seedling carrier, the seaweed seedling attachment work to the construction structure and the subsequent growth of the seaweed seedling are greatly improved compared to the conventional method, and good results are obtained. ing.
[0007]
[Problems to be solved by the invention]
  By the way, the seaweed cannot be expected to grow well unless the temporary roots are firmly attached to the settlement bed. For this reason, when the seaweed seedling carrying tool is attached to the construction structure, it is particularly important to attach the seaweed seedling temporary root to the surface of the structurally stable columnar part as quickly as possible. The success or failure greatly affects the time required for the seaweed development and the success rate. That is, in the seaweed seedling carrier immediately after attachment, since the seaweed seedling temporary roots are not attached to the surface of the columnar part, there is a possibility that the seaweed seedling seedlings may shift due to the ocean current or the like depending on the shape and attachment method for the columnar part. . If this condition persists, the growth of seaweed seedlings on the construction structure will be delayed, affecting the subsequent growth as well as increasing the risk of disappearing due to food damage before it grows. The state of attachment of the seaweed seedling carrying tool to the material is one of the most important elements in the creation of the seaweed bed. If there is no problem even if it takes time to attach, it is not so difficult to fix it securely, but if it is attached immediately before the construction structure is laid, especially if the seaweed seedlings are small. In addition to the above conditions, it must be easy to attach because it takes a short time to be easily damaged and placed in the air.
[0008]
  As a result of intensive studies on the method for attaching the seaweed seedling carrier, the present applicant has come up with the structure for creating a seaweed bed according to the present invention. That is, for the skeletal structure that can function as a seaweed settlement substrate, the seaweed seedling carrier can be easily attached, but the carrier does not shift after attachment, The purpose of this project is to create a three-dimensional seaweed bed that leads to effective use in the sea with a high success rate by allowing seaweed seedlings to grow on the skeletal structure.
[0009]
[Means for Solving the Problems]
  In order to solve the above-mentioned problems, in the present invention, a seaweed seedling carrying tool in which a seaweed seedling seedling is grown on a carrying base is provided on a skeletal structure in which at least one columnar section is erected on a block-shaped base. In the structure for creating a seaweed bed, which is attached in a substantially circular shape at an appropriate position on the surface, the seaweed seedling carrying tool is attached via a non-slip means. That is, in the algae bed construction structure according to the present invention, the seaweed seedling carrier attached to the columnar part is held at the attachment position and does not move in the circumferential direction or the vertical direction of the columnar part due to the ocean current or the like. Therefore, the temporary root of the seaweed seedling that had been attached only to the support substrate of the seaweed seedling support tool at the time immediately after construction stretched smoothly and reached the surface of the columnar part, and after it adhered firmly, the columnar part Will continue to grow on the bed.
[0010]
  In the algae bed construction structure, the seaweed seedling supporter on which the seaweed seedling has grown is fitted at an appropriate position on the outer periphery of the columnar part of the skeletal structure, so that the seaweed seedling is used as the core of creation around the seaweed. With the presence of the columnar part, it is possible to construct a three-dimensional seaweed bed suitable for being called an underwater forest with a high success rate. That is, the amount of seaweed seedlings introduced per unit area of the sea area can be increased by introducing seaweed seedlings to the seabed in the form of attaching an appropriate number of seaweed seedling supporters to the columnar portion of the construction structure. . And near the columnar part installed on the seabed, the ocean current changes, and the upwelling flow from the lower part of the columnar part tends to occur upwards, so oxygen and nutrients are spread all over and the depth of seaweed Since the growth conditions are easy to satisfy, the success rate of creation is extremely high. Furthermore, even if the seaweed below the columnar part is buried due to the accumulation of sandy mud on the seabed, the seaweed growing on the upper part remains, and it is not easily damaged by seaweeds such as sea urchins. When it is made of a highly durable material, the seaweed that is the core of the creation remains for a long time while changing generations, so a permanent seaweed bed can be created.
[0011]
  SaidNon-slip hand of seaweed seedling carrierSteppedThenIn the invention of claim 1, a sea groove is formed on the outer peripheral surface of the columnar part, and a concave part or a convex part that can be engaged with the carrier base is provided in a part of the circumferential groove, and the seaweed seedling carrier Adopted the technical means that it is attached to the columnar part in a state in which it is prevented from slipping in the vertical direction and the circumferential direction. Further, in the invention of claim 2, a tapered circumferential groove is formed on the outer peripheral surface of the columnar portion, and a protrusion capable of abutting on the tapered surface is provided on the supporting base, so that the seaweed seedling holding tool is the columnar The technical means of attaching to the part in a state of being prevented from slipping both vertically and circumferentially was adopted. According to a third aspect of the present invention, a circumferential groove is formed on the outer circumferential surface of the columnar portion, and a part of the bottom surface of the circumferential groove is projected in a slope shape, and the slope-shaped projection is projected on the inner circumferential surface of the carrier base. A technical means is provided in which a projection that engages with the portion is provided, and the seaweed seedling support is attached to the columnar portion in a state in which it is prevented from slipping in the vertical and circumferential directions.
[0012]
  Next, the seaweed seedling support tool used in the present invention is a rod-like, strip-like, etc. stringed body such as a rope or a hose of an appropriate length that has been grown in advance in the sea by growing a seaweed seedling in advance. It is attached to at least a part of a substantially annular or linear support substrate having an appropriate cross-sectional shape. Here, the supporting base is formed in a substantially annular shape with one portion such as a C-shape opened using a flexible material such as a synthetic resin, and the space between the open ends is widened with respect to the columnar portion. It can be attached from the lateral direction, or a similar material is formed in a substantially band shape, and when it is attached to the columnar part with a string-like body with seaweed seedlings attached to the carrying base There are several types, such as those that are attached in an annular shape along the peripheral surface, and those that are formed as endless rings and inserted from the upper end of the columnar part. In the former end-like substrate having a substantially annular or substantially band shape, the annular state can be maintained even after being attached to the columnar part by the elasticity of the material itself or the latching means provided at the end part. Any material may be used, and it may be appropriately formed into a length and shape from a flexible material such as bamboo, synthetic resin, rubber, or metal. Specific examples of the synthetic resin include polyamide resins, thermoplastic elastomers, polyurethanes, polyolefin resins, and the like. And, by providing a connecting means for maintaining the annular state at the end of the end substrate having a band shape or a rod shape, the attachment work to the columnar portion of the skeletal structure is facilitated and more robust. Can be attached in an annular state. In addition, although it may depend only on the holding force by the elastic restoring force that the material itself has, the elastic restoring force is further increased by, for example, curving and bulging a part in the longitudinal direction into a substantially U shape or the like. You may do it. Further, by adding a length adjusting function to the connecting means at the base end, the applicable range of the skeleton structure with respect to the columnar part outer diameter can be increased..
[0013]
  In addition, the string-like body on which the seaweed seedlings attached to the support substrate are grown is a method widely used in seaweed cultivation, for example, Cremona (trade name) in a water tank in which seaweed spores float, for example. After immersing an adhering base material such as seeds and seedlings suitable for the attachment of seaweed spores, etc. and attaching the seaweed spore to germinate, the attached base material has an appropriate thickness such as a rope or a hose as it is A string-like carrier (in the present invention, a hollow thing such as a hose is also included in the shape of a string) is attached by spiral winding or the like, and this carrier is horizontally installed or suspended in the sea. The seedlings were grown until the temporary roots of seaweed juveniles were attached to the appropriate size to withstand transplantation. In addition, although the magnitude | size changes with the kind of seaweed, construction time, and the environment of a creation area, generally the length of a leaf-shaped part is about 10 cm or more. The attachment to the carrier base may be any place except for the surface that engages with the columnar portion of the skeletal structure. For example, the carrier base may extend along the entire length of the surface located on the outer peripheral side, or They may be provided in various places, and those grown in the sea in the state of a long string-like body are cut into lengths as needed and used. For this reason, basically, it is not necessary to cure in the state of the seaweed seedling carrier, so that the space required for production is small. The fixing means for the supporting base may be formed by, for example, forming a plurality of hook-shaped parts at predetermined intervals on the surface of the supporting base that becomes the outer side when attached to the columnar part, or by inserting a separate fastener. It may be used to bind the carrier base and the string-like body. As the type of seaweed used here, seaweeds such as larvae, sea bream, and black seaweed are preferred, and among them, pickled seaweeds are particularly suitable. is there.
[0014]
  In addition, the skeletal structure used as the seaweed settlement floor is, for example, a concrete base with an appropriately shaped concrete base, a parallel fishing reef formed in a lattice frame shape, or a tetrapod (trade name). In short, if it is a structure having a columnar part, it will be an attachment target of a seaweed seedling carrier. As materials for these skeletal structures, metals, wood, synthetic resins, etc. can be used in addition to concrete, and the cross-sectional shape of the columnar part is not limited to a circle, but a polygon, or the interior is hollow. Also good. In addition, when the cross-sectional shape of the columnar part is a polygon, the support base in the seaweed seedling support tool naturally has a shape adapted to it, and basically no sliding in the circumferential direction occurs. Only the movement needs to be considered. And, the operation of attaching the seaweed seedling carrier to these skeletal structures is performed in the sea after the skeletal structure is set in the target sea area, or attached in advance on a trolley, and the timing is particularly limited. Not.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing an embodiment of a structure for creating a seaweed bed according to the present invention, and FIG. 2 is a perspective view showing an essential part thereof. A structure 1 for creating a seaweed bed according to the present invention includes a skeleton structure 2 and a seaweed seedling carrier 10. Here, the skeleton structure 2 is a base 3 made of concrete or the like, and a plurality of circular pillars 4 made of the same material are erected at predetermined intervals. As the shape of the base 3, an appropriate shape such as a rectangle, a cross, a trident, a hexagon is selected. As shown in FIG. 2, the column body 4 has a columnar shape, and circumferential grooves 5 are formed at predetermined intervals on the outer peripheral surface thereof, and a part thereof is a discontinuous and protruding portion 6. The columnar portion 4 may be a square column such as a square column in addition to the column as in the embodiment. In this case, the shape of the support substrate in the seaweed seedling support tool to be described later is also formed in a polygon. Needless to say. Incidentally, the length of the columnar part 4 in the skeletal structure 2 is preferably about 4 m, but may be appropriately changed depending on the depth of the installation place, the type of seaweed seedling used, and the like. Further, in the embodiment, an algae coating is applied to the surface other than the bottom surface of the base 3 and the surface of the columnar portion 4. As algae paint, paint containing general chemical fertilizer may be used,For exampleA water environment improvement paint (see JP-A-5-247378) comprising a photosynthetic bacterium proposed by the applicant, a carrier using porous particles, and a nutrient component of the photosynthetic bacterium.ApplicableIt is. When this paint is applied, it can maintain a high growth rate of seaweeds and can stably supply nutrients necessary for the growth of seaweeds over a long period of time. It is convenient for growing seedlings, but it is not always necessary to apply them.
[0016]
  The seaweed seedling carrier 10 attached to the skeletal structure 2 has a seaweed seedling 12 grown on a surface of a carrier base 11 formed as a substantially C-shaped ring with a synthetic resin having a suitable elasticity. In the peripheral groove 5 provided in each columnar part 4 of the skeleton structure 2, the protruding part 6 is provided between the both end parts of the carrier base 11.EngagementTo be fitted. Note that the width and length of the carrier base 11 are formed so as to be close to the circumferential groove 5 of each columnar portion 4. In mounting, both end portions of the carrier base 11 may be expanded against elasticity, and may be fitted into the circumferential groove 5 of the columnar portion 4 from between them, or may be externally fitted from the upper end portion of the columnar portion 4. Thereby, the seaweed seedling seedling carrier 10 is securely fixed in the circumferential groove 5 and does not move in any of the vertical direction and the circumferential direction of the columnar part 4 even when receiving an ocean current.
[0017]
  FIG. 3 to FIG. 7 are views showing the main part of another embodiment of the structure for constructing seaweed beds according to the present invention. In the structure for creating seaweed beds shown in FIG. 3, a part of a C-shaped support base 21 made of an elastic material similar to that of the above-described embodiment is substantially U-shaped radially outward as the seaweed seedling support 20. Using the one provided with the bulging portion 22 that bulges, the protruding portion 25 and the bulging portion 22 provided in a part of the circumferential groove 24 of the columnar portion 23 of the skeletal structure are provided.EngagementThis prevents sliding in the circumferential direction. In the structure for creating a seaweed bed shown in FIG. 4, a protrusion 32 is provided on the support base 31 of the seaweed seedling holding tool 30, and a recess 35 is formed on the bottom surface of the circumferential groove 34 of the columnar part 33. Formed betweenEngagementPrevents sliding in the circumferential direction. MaIn the embodiment shown in FIG. 5, a cutout portion 42 is provided on the side edge portion of the carrier base 41 of the seaweed seedling carrier 40, and a protrusion 45 is formed on the peripheral portion of the circumferential groove 44 in the columnar portion 43.EngagementYou may make it make it. Further, instead of the anti-slip means based on the engagement of the concave and convex portions as in these embodiments, friction may be used as shown in FIGS. In other words, in the illustrated structure for creating an algae field, predetermined portions are provided on both side edge portions of the support substrate 51 of the endless seaweed seedling support tool 50 having connecting means (not shown) for maintaining an annular state at both ends. The protrusions 52 are formed at intervals of both, and both peripheral portions of the circumferential groove 54 of the columnar part 53 are formed as tapered surfaces 55, and the protrusions 52 are elastically applied to the tapered surface 55 by tightening at the time of connection. Anti-slip is performed by contact.
[0018]
  8 to 10 relate to another embodiment of the structure for constructing a seaweed bed according to the present invention, among which FIG. 8 and FIG. 9 are a plan view and a front view, respectively, showing a carrier base 61 in a seaweed seedling carrier 60. is there. The illustrated supporting substrate 61 is formed as a band-shaped ring partially opened by a synthetic resin having appropriate elasticity, and has a hook-like protrusion 62 at one end and the hook-like protrusion 62 at the other end. A retaining hole 63 for connecting and holding the ring is provided. Furthermore, a substantially L-shaped receiving part 64 for hooking a string-like body (see FIG. 10) to be described later protrudes at five locations on the outer side surface, and a protrusion 65 is provided inside the tip of the receiving part 64. Is formed, and a projection 66 is also provided in the axial direction on the outer peripheral surface of the main body so as to face the projection 65. In addition, substantially U-shaped bulging portions 67 project outwardly at two locations in the middle portion of the main body, and further, three protrusions for preventing sliding are formed on the inner surface side of the receiving portion 64 of the main body. 68 are formed in the axial direction at substantially equal intervals. In the embodiment, a pair of grips 69 are provided in the vicinity of each end of the main body, and connecting means 70 are provided at three positions of the main body. The connecting means 70 is used when a plurality of seaweed seedling attachments 60 are stacked and connected so as not to be bulky during transportation and temporary storage, and a plastic monofilament is inserted into a through hole provided in the connecting means 70. It can be easily connected by passing an appropriate wire such as.
[0019]
  As shown in FIG. 10, the seaweed seedling carrier 60 is provided with a string-like body 80 along the outer peripheral surface of the carrier base 61. The string-like body 80 is obtained by using a rope culture method widely used in seaweed culture, and a large number of seaweed seedlings 81 that have grown more than a juvenile are growing on the surface. The production method is as follows. First, in a water tank on the land where seaweed spores are floating, an appropriate base material such as seeds and seedlings suitable for the adhesion of seaweed spores is dipped in fibers, and the seaweed spores are attached thereto. After germination, the adhering substrate is wound spirally around a string-like carrier having an appropriate thickness such as a rope or hose (not shown), then placed in the sea, and a temporary seaweed juvenile is placed. The roots are grown until they firmly settle on the carrier and become large enough to withstand transplantation. The string-like body 80 is attached to the carrier base 61 by inserting the string-like body 80 into the five receiving portions 64 along the outer surface of the carrier base 61 from above, as shown in FIG. At the same time, the projection 66 provided opposite the receiving portion 64 prevents radial movement. The string-like body 80 does not necessarily have to be provided over the entire circumference of the carrier base 61, and is cut into a length slightly larger than the width of the receiving portion 64 and fitted into each receiving portion 64, Some may be inserted. In addition, the seaweed seedling carrying tool in each of the above embodiments is also provided with a receiving portion having an appropriate shape that can attach the string-like body 80 to each carrying base instead of directly depositing the seaweed seedling on the carrying base itself. Alternatively, they may be attached, or may be bundled and integrated with a separate fastener or the like in a state where the string-like body 80 is placed along the carrying base.
[0020]
  The columnar portion 90 of the skeletal structure to which the seaweed seedling carrier 60 is attached is provided with a circumferential groove 91 close to the width of the carrier base 61 at an appropriate position on the outer circumferential surface. Slope-like protrusions 92 are formed at three locations so as to rise at substantially equal intervals and in the same direction. In order to attach the seaweed seedling carrier 60 to the columnar part 90, first, the columnar part is formed at a position where the three protrusions 68 on the inner surface of the supporting base 61 do not overlap with the sloped protruding part 92 of the columnar part 90. The hook-like protrusions 62 and the hooking holes 63 provided at both ends of the carrier base 61 with the 90 penetrating through the inside are engaged with each other while being pulled together by using a pair of grips 69 provided in the vicinity of the hooked protrusions 62. The support substrate 61 which has been described above is brought into an annular state. At this time, the substantially U-shaped bulging portions 67 provided at two positions in the intermediate portion of the support base 61 are appropriately opened, so that even if the outer diameter of the circumferential groove 91 of the columnar portion 90 slightly varies, it is ensured. Can be applied inwear. Next, when the annular seaweed seedling support 60 is rotated in the clockwise direction, the three protrusions 68 on the inner surface of the support base 61 come into contact with the slope-shaped protrusion 92 of the columnar section 90, and are appropriately positioned on the slope. It is locked with. As a result, the seaweed seedling carrier 60 is securely fixed. That is, in the present embodiment, the seaweed seedling carrier 60 can be easily attached without requiring a great force, and the dimensional tolerance of the mounting position of the columnar portion 90 has a margin, It can be securely fixed. The elasticity of the material constituting the carrier base 61Can be fully opened byIf so, the bulging portion 67 is unnecessary. When fixed in this way, even when subjected to ocean currents, they will not move in any direction, so the temporary roots of the seaweed seedlings 81 will grow smoothly and reliably on the surface of the columnar part 90 in a short time. To settle.
[0021]
  In these algae bed construction structures, the temporary roots of a large number of seaweed seedlings growing on the seaweed seedling supporter extend and settle in the columnar part, and when they grow and mature there, spores are released and the base 3 and seaweed grow around it. According to this creation method, the seaweed that is the core of the seaweed bed construction uses the columnar part standing in the almost vertical direction of the skeletal structure installed at a predetermined position as an epiphysical bed. It grows well under the influence of the above, and since the skeletal structure is a permanent structure, generational changes are made smoothly there, and it exists for a long period of time, and many spores are diffused around. It should be noted that in places where there are no settlements such as reefs around the structure for creating seaweed beds, it is desirable to install stones etc. around them. Install many structures for creation at appropriate intervals from each other, or group multiple structures for creating seaweed beds, and install them at intervals that allow fishnets to be inserted between the groups. Also good. In the said 1st Example, although the case where the seaweed seedling seedling carrier 10 is attached to all the columnar parts 4 of the skeletal structure 2 is described, in particular, when it is not required to create a seaweed bed in a short period of time, It is also possible to attach to at least one of the plurality of columnar portions 4 and allow seaweeds to thrive around the spores released therefrom. The attachment time of the seaweed seedling carrier 10 may be before or after the skeleton structure 2 is set. Further, the seaweed seedling carrier 10 may be one for each columnar portion 4..
[0022]
【The invention's effect】
  As explained above,According to the present invention, a combination of a circumferential groove formed on the outer peripheral surface of the columnar portion and a concave portion or a convex portion that can be engaged with the support base provided in the circumferential groove portion, or a tapered shape. A combination of a circumferential groove and a protrusion provided on the carrier base that can abut on the tapered surface, or a slope-like protrusion formed on the bottom surface of the circumferential groove formed on the outer peripheral surface of the columnar part, The seaweed seedling carrying tool can be easily and accurately placed in the vertical direction with respect to the columnar part by a simple configuration of a combination with a protrusion formed on the inner peripheral surface of the carrying base that can be engaged with the slope-like protruding part. It can also be attached in a non-slip state. Also,Structure for constructing seaweed beds according to the present inventionIf you useSince the seaweed seedling holding tool is held at its attachment position and does not move due to ocean currents, the temporary roots of the seaweed seedling seedlings attached only to the support substrate of the seaweed seedling holding tool immediately after construction are smoothly After elongating and reaching the surface of the columnar part in a relatively short period of time, after having adhered reliably here, the columnar part will continue to grow with the bed as an established bed. For this reason, the success rate of seaweed bed creation increases, and at the same time, the creation period is shortened. In addition, the seaweed seedlings can be easily attached to a skeletal structure that can function as a substrate for seaweed growth, and the use of this seaweed seedling seedling support tool leads to effective utilization in the sea. The effect is extremely large.
[Brief description of the drawings]
FIG. 1 is a front view showing an example of a structure for creating a seaweed bed according to the present invention.
FIG. 2 is a perspective view showing a main part of the structure for creating seaweed beds shown in FIG. 1;
FIG. 3 is a cross-sectional view showing a main part of another embodiment of the structure for creating a seaweed bed.
FIG. 4 is a cross-sectional view showing a main part of another embodiment of the structure for creating a seaweed bed.
FIG. 5 is a front view showing a main part of another embodiment of the structure for creating a seaweed bed.
FIG. 6 is a front view showing a main part of another embodiment of the structure for creating a seaweed bed.
7 is a longitudinal sectional view showing a main part of the structure for creating a seaweed bed shown in FIG. 6. FIG.
FIG. 8 is a plan view of a support substrate in a seaweed seedling support tool used in another embodiment of the structure for generating seaweed beds.
9 is a front view of the carrier base shown in FIG.
10 is a cross-sectional view showing a main part of a structure for creating a seaweed bed using the seaweed seedling carrying tool shown in FIG. 8. FIG.
[Explanation of symbols]
1 ... Structure for seaweed bed construction, 2 ... Skeletal structure, 3 ... Base,
4, 23, 33, 43, 53, 90 ... columnar part,
10, 20, 30, 40, 50, 60 ... Seaweed seedling carrier,
12, 81 ... seaweed seedlings, 11, 21, 31, 41, 51, 61 ... supporting substrate,
80 ... string

Claims (4)

A seaweed seedling carrying tool in which a seaweed seedling is grown on a carrying base is attached to a skeleton structure in which at least one columnar portion is erected on a block-shaped base, and is attached in a substantially annular shape at an appropriate position on the outer peripheral surface of the columnar portion. The seaweed seedling seedling seedling is formed by forming a circumferential groove on the outer peripheral surface of the columnar part, and providing a concave part or a convex part that can be engaged with the carrier base in a part of the circumferential groove. A structure for creating a seaweed bed, characterized in that the support is attached in a state in which it is prevented from slipping in the vertical and circumferential directions with respect to the columnar part . A seaweed seedling carrying tool in which a seaweed seedling is grown on a carrying base is attached to a skeleton structure in which at least one columnar portion is erected on a block-shaped base, and is attached in a substantially annular shape at an appropriate position on the outer peripheral surface of the columnar portion. In the algae bed construction structure, a tapered peripheral groove is formed on the outer peripheral surface of the columnar portion, and a protrusion that can contact the tapered surface is provided on the support base, and the seaweed seedling supporter is provided in the columnar shape. A structure for constructing a seaweed bed, characterized in that the structure is attached in a state in which it is prevented from slipping both vertically and circumferentially with respect to the portion . A seaweed seedling carrying tool in which seaweed seedlings are grown on a carrying base is attached to a skeleton structure in which at least one columnar part is erected on a block-shaped base, and is attached in a substantially annular shape at an appropriate position on the outer peripheral surface of the columnar part. In the structure for creating seaweed beds, a peripheral groove is formed on the outer peripheral surface of the columnar portion, and a part of the bottom surface of the peripheral groove protrudes in a slope shape, and the slope shape is formed on the inner peripheral surface of the carrier base. The seaweed bed is provided with a projection that engages with a protruding portion, and is configured to be attached in a state in which the seaweed seedling supporter is prevented from slipping in the vertical and circumferential directions with respect to the columnar portion. Construction structure. The seaweed seedling carrying tool is characterized in that a cord-like body of an appropriate length that has been grown in advance until the seaweed seedling seedling is grown to an appropriate size in the sea is attached to at least a part of the carrying base. The structure for seaweed formation according to any one of claims 1 to 3 .

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