JP2003158928A - Bed for culturing seaweed and method of culturing seaweed - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems that conventional artificial beds for growing seaweeds have a large scale of artificial beds in the sea, needs large labor and high cost because the concrete blocks and natural stones are heavy, the epiphytic provability of seaweeds is unsatisfactory, when ropes are used as an algae adhesion foundation bed, the base material is light and unstable, when the algae adhesion base is anchored to the weight on the sea bottom, the weight sometimes sinks down into the bottom sand, and the kinds of seaweeds are limited in the case of alga adhesion under natural conditions. <P>SOLUTION: An alga bed to which spores and seeds of marine plants can adhere is attached to a flexible sheet base and spores and seeds are allowed to adhere to the alga bed to prepare the base culturing seaweeds. In another embodiment, spores and seeds are attached to the alga base in the culture base and the culture base is allowed to sink to the sea bottom that will grow as an alga area. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a culture base for marine and aquatic plants such as seaweed in seawater and freshwater, and a culture method therefor.

[0002]

2. Description of the Related Art In recent years, depletion of fishery resources has become a problem, and one of the causes thereof is a decrease in algae in the near sea.
Therefore, a wide variety of methods have been adopted to create seaweed beds.In general, concrete blocks and natural stones are used to create algae epiphytic bases that provide a natural breeding site, or ropes are used to attach algae. There is a method of setting it in the sea as a live base.

[0003]

According to such a conventional technique, since concrete blocks and natural stones are heavy objects, a large amount of labor is required to install a wide area seaweed bed. However, there is a problem in that it costs a lot of money and does not settle well. Furthermore, if they do not settle, the concrete blocks and natural stones may interfere with the fishing net spreading and storage work, which may cause a secondary problem that the fishing industry is greatly affected.

Further, in the case of ropes, the epiphytic base is light and not stable, which hinders the growth, and if it is installed on the seabed with a weight, it may be scoured or subsided to reach the seabed. Generally, the seaweed bed development has a problem that only algae in the surrounding sea area grow because it is a natural epiphyte.

Further, the conventional seaweed bed creation technology is often provided mainly for the purpose of improving the environment of the surrounding sea area,
There was a problem in that this was regarded as a fishery and was not used as a new means of catch for local industries.

[0006]

Therefore, according to the present invention, an algal bed capable of adhering spores and seeds of marine plants is attached to a sheet base made of a flexible material, and the spores and seeds are attached to the algal bed. Let it be a base for aquaculture of seaweed. Furthermore, it is characterized in that the spores and seeds are attached to the alga bed of the culture base such as seaweed, and then the spores and seeds are laid down on the seabed serving as a seaweed bed.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. First Embodiment Example FIG. 1 is an explanatory view, and in the figure, 1 is a sheet base, which is a sheet made of a flexible material such as rubber or synthetic resin, and metal powder or the like is mixed as necessary. To adjust the specific gravity. The thickness, size and shape of the seat base 1 are arbitrary and may be designed so as to suit the conditions of the site.

Reference numeral 2 denotes an algal bed, which is a woven or non-woven cloth made of natural fibers, synthetic fibers, etc., and may be any material capable of being mixed with spores of seaweed and seeds of marine plants, and is porous. Alternatively, it may be a cloth-like body formed of an elastic body processed into a sponge shape composed of open cells. The alga bed 2 thus constructed is integrated with the sheet base 1 by an adhesive material, or the alga bed 2 is locked at a predetermined interval by a locking tool such as a tack to be integrated to form a culture base 3.

The size and shape of the sheet base 1 may be determined in consideration of the weight and workability during transportation and settling work. For example, any size such as a circular, rectangular or rolled long object. It may be a pod shape. Seaweed spores and marine plant seeds are attached to and mixed with the algae bed 2 of the aquaculture base 3 thus formed, soaked in seawater, and settled on the seabed that will become a seaweed bed before it dries. If there is time before the sedimentation is set up after attaching the spores, replenish the seawater so that it will not dry.

As shown in FIG. 2, since the alga bed 2 and the sheet base 1, which form the aquaculture bed 3 which is settled over a desired area at a portion forming a seaweed bed, are flexible, the topography of the seabed that has settled down. It will be installed along with and will adapt to it. In addition, depending on the type of algae, there is a type that does not grow unless roots are placed in the sand layer. In that case, holes are made in the sheet base 1 to grow roots from the holes to the sand layer. Can be made.

Further, the seaweed thus grown often feeds to organisms such as fish, shellfish and starfish when it is a young grass, and those organisms are harmful to such organisms harmful to the seaweed. It is known that seaweed that grows a repellent substance that it dislikes grows, and it is convenient for growth if the substance is attached together with spores. Further, by impregnating only such a substance as a barrier material and disposing it as a barrier material around the seaweed beds or in the vicinity of the aquaculture base 3, it is possible to reduce the damage of pests.

[0012] The seaweed thus grown forms a seaweed bed, and fish that prefer the seaweed bed can be collected to form a fishing ground, and seaweed can be cultivated and fish can be caught. The grown seaweed can be pulled up and collected as it is together with the aquaculture base 3, and after that, a new alga bed to which the spores of seaweed are attached can be reattached to the sheet base 1 and used. It is possible. If the seaweed bed after harvesting the seaweed is usable, it can be repeatedly used as it is.

Incidentally, spores of seaweed or seeds of marine plants may be directly attached to the sheet base 1, and in that case, the whole or the surface of the sheet base 1 is processed so that spores and seeds are easily attached. Good. This eliminates the need for algae beds. Second Embodiment Example Although the cloth-like body is the algal bed in the above-mentioned first embodiment, the cloth-like body does not necessarily have to be a cloth-like body, and a string-like body made of natural fibers or synthetic fibers or a sponge-like string-like body. Bed 2 by the body
As shown in FIG. 2, the sheet base 1 may be wound around at appropriate intervals, or may be attached in a lattice pattern as shown in FIG. Similar to the above, the attachment method is to be integrated by locking at a predetermined interval by adhesion or a locking tool.

Further, as shown in FIG. 4, the sheet base 1 can be made of a softer material to have a thicker thickness, and by making the sheet softer, even if it is thicker, it follows the uneven shape of the seabed and dents. You can adapt to the terrain with. The above configuration can also be used in the same manner as the first embodiment. Third Embodiment Further, the algal bed 2 may be constituted by a mesh body, and the algal bed 2 having such a mesh body is used for the sheet base 1 as the first embodiment.
Although it may be attached in the same manner as in the embodiment, as shown in FIG. 5, the sheet base 1 may be arranged on a part of the reticulated algal bed 2.

As for the mounting state, it may be mounted on the upper surface of the sheet base 1 by adhesion or a locking tool as in each of the above-described embodiments, and it may be mounted on the upper surface of the sheet base 1 without being mounted. The mesh of the mesh may be locked around by a locking tool. In short, any attachment method may be used as long as the sheet base 1 and the algal bed 2 are integrated so as not to come off easily.

With the above structure, it can be used similarly to the first embodiment.

[0017]

According to the present invention described in detail above, an algal bed capable of adhering spores and seeds of marine plants is attached to a sheet base made of a flexible material to attach spores and seeds of marine plants. By laying it down on the seabed, which becomes the seaweed bed after it is made to have an effect that a seaweed bed having a vast area can be formed at a desired place.

Further, since the sheet base is made of a flexible material and set to a desired weight, there is an effect that the aquaculture base can be stably laid on the seabed for a long period of time. In addition, the grown seaweed can be pulled up together with the aquaculture base, which has the effect of facilitating the harvesting work, and it is also very easy to lay down the aquaculture base, resulting in an excellent workability.

Further, the raised aquaculture base can be reused, and has an effect that no disposal is required. Further, since the structure is flat, there is no hindrance to the expansion of fishing nets and accommodation work, and there is an effect that the fishing industry is not affected.

[Brief description of drawings]

FIG. 1 is an explanatory view of a culture base showing a first embodiment example.

[Fig. 2] Illustration of growing condition

FIG. 3 is an explanatory diagram of a culture base showing a second embodiment example.

FIG. 4 is an explanatory diagram of another aquaculture base showing a second embodiment.

FIG. 5 is an explanatory view of another aquaculture base showing the third embodiment.

[Explanation of symbols]

1 sheet base 2 algal beds 3 Aquaculture base

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Nobuyasu Ikoma             1058 Nakao, Uozumi Town, Akashi City, Hyogo Prefecture Shibata             Industry Co., Ltd. F-term (reference) 2B003 AA01 BB06 CC02 DD03 EE04                 2B026 AB05 AC03 AC06 AF04                 2B121 AA06 BB28 CC21 EA30

Claims (11)

[Claims] 1. A seaweed or the like characterized in that an algal bed capable of adhering spores or seeds of marine plants is attached to a sheet base made of a flexible material, and spores or seeds are adhered to the algal bed. Aquaculture base. 2. The seaweed or the like according to claim 1, wherein the sheet base made of a flexible material is made of an elastic material such as rubber or synthetic resin, and metal powder is mixed therein to adjust the specific gravity. Aquaculture base. 3. The aquaculture base for seaweed or the like according to claim 1, wherein the alga bed is made of a woven or non-woven cloth made of natural fiber or synthetic fiber board. 4. The culture base for seaweed or the like according to claim 1, wherein the alga bed is formed of a string-shaped body made of natural fiber or synthetic fiber board. 5. A culture base for seaweed or the like according to claim 1, wherein the alga bed is composed of a net body made of natural fiber or synthetic fiber board. 6. The aquaculture substrate for seaweed or the like according to claim 1, wherein the alga bed is formed of a sponge-like elastic body made of porous or open cells. 7. A culture base for seaweed or the like, characterized in that spores and seeds are directly attached to the alga bed on the sheet base. 8. The aquaculture substrate for seaweed or the like according to claim 1 or 7, wherein the sheet substrate is provided with holes. 9. An alga bed which can attach spores and seeds of marine plants, etc. is attached to a sheet base made of a flexible material, and the spores and seeds are attached to the alga bed, and then the sea bed becomes a sea bed. A method for cultivating seaweed and the like, which comprises laying down. 10. The method for cultivating seaweed according to claim 9, wherein a fish repellent substance is attached together with spores and seeds. 11. The method for cultivating seaweed or the like according to claim 9, wherein the repellent substance for fish is arranged in the vicinity of the culture base.