JPH104809A - Laver culture and apparatus therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability due to the retention of a laver net in a fixed operation zone when carrying out an operation, by spreading the layer net so as to be positioned at the center of the interval of struts when the layer net is held on the struts by sagged suspending nets. SOLUTION: When a laver net 2 for culturing laver is held on struts 5 stood from the bottom of the sea by suspending nets 6 in the relationship of the formula L<(11+L2+L1) (L is the interval of the struts located at both the outsides in the shorter direction of the laver net; L1 is the length of the suspending net; L2 is the width of the layer net), the laver net 2 is spread so as to be positioned approximately at the center of the width interval L of the struts 5. To be concrete, for example, sinking bodies 8 to be freely engaged with the struts 5 and to be vertically movable along the struts 5 are used as spreading position controlling means so that the suspending nets 6 are made into a tight state, edge ropes 3 located in the shorter direction of the laver net 2 are energized toward the struts 5 placed at both the outsides in the shorter direction of the layer net 2 so as to position the laver net 2 at the center of the width interval L of the struts 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cultivating laver and a device for cultivating laver, and more particularly to extending a laver net between struts erected on the sea floor and placing the expanded laver net above a laver work boat. Nori cultivation method and a Nori cultivation apparatus which can be guided to perform the operation.

[0002]

2. Description of the Related Art In general, laver cultivation is carried out by attaching a float to a laver net, floating it on the sea surface, and extending the seaweed to stop by an anchor. It is performed using a laver cultivation method called a strut system in which a laver net is fixed to a strut with a hanging rope and stretched, and the use of both types is determined according to the location conditions of a farm and the like.

A seaweed cultivation site that employs the strut-type seaweed cultivation method is close to the shore where the struts can be erected, at a shallow depth, and when the sea is at low tide, the seaweed net separates from the sea surface. During the day, the bactericidal effect of various germs attached to the laver due to the sun is large, which is a desirable method for cultivating the laver.

[0004] In such a laver cultivation method of the strut type, a laver network for cultivating laver as a laver cultivation apparatus, a plurality of struts and suspension ropes used for extending the laver net, and a nori net are cultured. Nori work boats and the like are used to efficiently perform various operations such as cutting of nori and acid treatment.

[0005] The laver net is for cultivating laver, and is formed in a belt-like shape by braiding a plurality of ropes thinner than the rope on a thick edge rope forming four sides. In addition, in the transverse direction of the laver net at a substantially intermediate position between the strut and the support erected in the longitudinal direction of the laver net in the extended state, in order to give buoyancy to the laver net and to prevent twisting of the laver net An extender rod formed so as to be able to extend in the axial direction is disposed so that both ends thereof are locked by a rope.

The struts are for holding the laver net at a predetermined position in a laver farm, are formed in a rod shape, and have an appropriate width interval larger than the width of the laver net (perpendicular to the longitudinal direction of the laver net). (Distance in the direction of the fish), and is erected from the seabed at a predetermined position of the aquaculture farm so as to be substantially aligned.

[0007] The suspension rope is for extending the laver net between the struts. The width interval of the struts located on both outer sides in the lateral direction of the laver net is L, the length of the suspension rope is L1, the laver is Lori. When the width of the net is L2, a length having a relationship of L <(L1 + L2 + L1) is used. In other words, the suspension leash stretches the laver net between the struts with the slack. The position of the laver net moving in the vertical direction is controlled by the position where the suspension rope is locked to the column.

[0008] The laver work boat is used to automatically harvest and harvest seaweed cultivated in the laver net, and to float seawater scales and debris on the surface of the laver net and the seaweed cultivated in the laver net. There are factors that reduce the quality of nori, such as the adhesion of things and the propagation of various germs.Therefore, in order to grow high-quality, healthy nori and improve the harvest rate, Approximately two to three times, to efficiently perform various operations such as an acid treatment operation of applying an acid treatment to the laver net and laver cultured in the laver net, for example, by a power propulsion mechanism While propelling on its own, the front guide member whose tip is immersed in the sea is attached to a pillar standing from the sea floor with a suspension rope, and is placed below the laver net that is stretched on the sea surface by a pillar method. Put in, automatically laver net While scooping continuously from the sea surface and guiding the scooped laver net above the hull to the rear of the hull with a guide member, the cutting mechanism and acid treatment mechanism provided on the hull, Mowing or acid treatment of the laver is performed.
The laver work boat is configured such that a person gets into the wheelhouse and is steered.

[0009]

However, in the above-mentioned conventional seaweed cultivation method and seaweed cultivation apparatus,
The strut and the nori net, specifically the nori net of the nori net are locked with a hanging rope, and the slack of the hanging rope responds to the rising and falling tide and the vertical movement of the sea surface such as spring tide and neap tide. Although it can be moved easily in the front, rear, left and right directions under the influence of wind waves such as wind, waves, tides, etc.
That is, there was a problem that the position in the width direction of the laver net could not always be located substantially at the center of the width of the strut.

When the position of the laver net is not located substantially at the center of the width of the strut, the front guide is used when performing various operations such as a mowing operation and / or an acid processing operation by the laver work boat. When the member cannot automatically scoop the laver net from the sea surface continuously and perform various operations with a laver work boat, consider a time zone where wind waves etc. affect the laver net such as tide stops. Has been done,
There is a problem that the work time is shortened and the workability is poor due to the restriction of the work time zone.

Further, in the conventional laver work boat, although the laver net can be automatically scooped up from the sea surface by the front guide member, the laver is slackened so that the laver net is vertically and horizontally. It is movable, and when guiding the scooped laver net above the hull to the rear of the hull with the guide member, the laver net moves freely and rampages, holding the laver net within the predetermined working area In the mowing work, the seaweed is mottled from the seaweed net called tiger mowing etc., and there is a case where there is a part that is not acid-treated in the acid treatment work, and to perform appropriate work stably Can work only in the time zone near the high tide, so that the height of the guide member provided on the hull from the draft surface with less slack of the suspension line is limited, and the work time zone is restricted With Short working time, there is a problem of poor workability.

[0012] The present invention has been made in view of these points, and when the laver net is extended, the position of the laver net in the width direction can be maintained at an appropriate position of the width of the strut. An object of the present invention is to provide a nori cultivation method and a nori cultivation apparatus with good workability, which can hold a laver net within a predetermined work area when performing various operations.

[0013]

In order to achieve the above-mentioned object, a feature of the laver cultivation method according to the present invention described in claim 1 is that a laver net for cultivating laver is erected from the seabed. When the width of the struts located on both outer sides in the short direction of the laver net is L, the length of the leash is L1, and the width of the laver net is L2, L <
In the nori cultivation method of expanding by locking in a relation of (L1 + L2 + L1), the present invention is characterized in that the laver net is expanded so as to be positioned substantially at the center of the width of the support.

A feature of the laver cultivation method according to the present invention described in claim 2 is that when a laver net for cultivating laver is fixed to a support standing upright from the sea bottom with a suspension rope, When the width interval of the struts located on both outer sides in the lateral direction of the net is L, the length of the suspension rope is L1, and the width of the laver net is L2, by locking in a relationship of L <(L1 + L2 + L1). In the nori cultivation method of expanding and conducting the work by guiding the expanded laver net above the nori work boat,
At the time of the work, the laver net is held in a range of a work area above the laver work boat.

A feature of the laver cultivation apparatus according to the present invention described in claim 3 is that when a laver net for cultivating laver is locked to a support standing upright from the sea bottom by a suspension rope, When the width interval of the struts located on both outer sides in the lateral direction of the net is L, the length of the suspension rope is L1, and the width of the laver net is L2, by locking in a relationship of L <(L1 + L2 + L1). In a laver cultivation apparatus used for a method for extending a laver cultivation, a laver net, a plurality of struts erected from the sea floor, a suspension line for locking the laver net to the struts, and the laver net between the struts. And a spreading position control means for holding the laver net approximately at the center of the width of the struts located on both outer sides in the lateral direction of the laver net when the laver net is stretched.

A feature of the laver cultivation apparatus according to the present invention described in claim 4 is that when a laver net for cultivating laver is fixed to a support standing upright from the seabed by a suspension rope, the laver is used. When the width interval of the struts located on both outer sides in the lateral direction of the net is L, the length of the suspension rope is L1, and the width of the laver net is L2, by locking in a relationship of L <(L1 + L2 + L1). In the laver cultivation apparatus used for the laver cultivation method for performing the operation by extending and spreading the expanded laver net to the upper side of the laver work boat, at least at the time of the operation, the laver net is placed within the working area of the laver work boat. In that it has a work position control means for holding the work position.

Further, by providing the laver cultivation apparatus of the present invention according to the third aspect in accordance with the laver cultivation method of the first aspect of the present invention, the spreading position control means always keeps the laver net on the support of the laver. It can be located approximately at the center of the width interval.

Further, by providing the laver cultivation apparatus of the present invention according to claim 4 in accordance with the laver cultivation method of the present invention according to claim 2, the work position control means can perform
The laver net led above the mossy work boat can be held within the working area of the nori work boat.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings.

FIG. 1 is a perspective view showing a main part of an embodiment of a laver cultivation apparatus according to the present invention to which a laver cultivation method according to the present invention is applied, and FIG. FIG. 3 is a side view showing a main part of the laver work boat, and FIG. 4 is a plan view of FIG.

First, the expansion of the laver net in the laver cultivation apparatus of the present embodiment will be further described.

As shown in FIG. 1, a laver net 2 constituting a part of the laver cultivation apparatus 1 of the present embodiment is formed in a band shape, and a thick rope 3 forming four sides and a rope 3 A large number of finer ropes 4, 4,... Are woven in a lattice shape.
This laver net 1 is erected at an appropriate width interval (distance in a direction perpendicular to the longitudinal direction of the laver net 2) L larger than the width L2 of the laver net 2 at an appropriate interval on the seabed of a shallow sea. , Which are fastened to the rope 3 by a hanging rope 6 having a large slack, and are substantially in the middle of the support 5 erected in the longitudinal direction of the laver net 2 and the support 5. In order to apply buoyancy to the laver net 2 in the width direction of the laver net 2 in the width direction, and to prevent the laver net 2 from being twisted, a drawer rod 7 formed to extend in the axial direction is provided at both ends thereof. The rope 3
It is locked and installed in a seaweed farm.

As shown in FIG. 2, the length L1 of the hanging rope 6 is a length represented by L <(L1 + L2 + L1) where L is the width of the column 5 and L2 is the width of the laver net 2. Have been.

Each of the columns 5 is provided with a ring-shaped sinking body 8 which is submerged in the sea of an appropriate weight. The sedimentary body 8 is disposed by engaging the suspension rope 6 with the column 5 and then loosely fitting the column 5. Then, when the laver net 2 is stretched between the columns by the sedimentary body 8 in the present embodiment, the laver net 2 is spaced apart from the columns 5 located on both outer sides in the short direction (width direction) of the laver net 2. An expansion position control means 9 held substantially at the center of L and a work position control means 11 for holding the laver net 2 at least at the time of work within a work area of a laver work boat 10 to be described later.

That is, the laver cultivation apparatus 1 of the present embodiment.
Of the laver net 2 in the same manner as in the prior art, in which the laver net 2 is stretched on the column 5 with the slack hanging rope 6 as compared with the conventional configuration, the expansion position control means 9 and the work position control means 11 are provided on the column. Is attached.

The shape of the sedimentary body 8 can be any shape that can be loosely fitted to the column 5, for example, an annular shape, a cylindrical shape such as a plane circle, a polygon such as a plane square, or any other shape. You can choose from.

The vertical adjustment of the height of the laver net 2
The weight of the sedimentary body 8 and the buoyancy of floats (not shown) provided on the suspension ropes 6 and the extension rods 7 can be adjusted comprehensively.

Next, a nori work boat for performing various operations in the nori cultivation apparatus of the present embodiment will be further described.

The laver work boat 10, which is a part of the laver cultivation apparatus 1 of the present embodiment, is formed so as to be able to perform at least a cutting operation and / or an acid treatment operation.

As shown in FIGS. 3 and 4, the laver work boat 10 of the present embodiment has an appropriate power propulsion mechanism 13 disposed at the stern of the hull 12. This power propulsion mechanism 1
3 is more efficient because it can be propelled by itself to reciprocate to a seaweed farm, etc., but is not necessary.

At the upper part of the deck of the hull 12, a pipe-shaped guide means 14 is provided. This guide means 1
4 is divided into a front guide portion 15, an upper guide portion 16 and a rear guide portion 17, which are called corners, in this order from the bow side of the hull 12.

The front guide portion 15 is formed in a substantially U-shape in plan view. The U-shaped curved tip is submerged at a desired inclination angle from the bow and the other end is a downward leg 18.
The base of the front guide portion 15 is detachably and rotatably attached to the upper guide portion 16 by an appropriate engaging means 19 such as a bolt. In addition, the upper guide portion 16 includes two pipes 20 arranged above the port side of the hull 12 in parallel with the traveling direction of the hull 12,
20; these two pipes 20,
20 is a plurality of crossbars 21 orthogonal to the traveling direction of the hull 12,
Are connected to each other by means of 21, and are fixed to the hull 12 by the legs 22.

The upper guide 16 is provided with the front guide 1.
A curve continuous with the front guide portion 15 so that the laver net 2 scooped up by 5 is smoothly guided to the rear portion of the hull 12,
Alternatively, it is configured to form a straight line.

At the rear end of the upper guide portion 16, four pipes 23a, 23b, 23
A rear guide 17 which is telescopically formed with the c and 23d coaxially and telescopically attached is attached to the rear guide 1.
The lower end of the three pipes 23b, 23c, 23d at the rear end of 7 is connected to the upper end of a rod 25 to which a float 24 floating on the sea surface is fixed at the lower end. Each pipe 23d is provided at the tip of the innermost pipe 23d.
When pulling out the b, 23c and 23d, a hook which hooks on the rope 3 of the laver net 2 is pivotally connected with a shaft (both not shown), and an excessive force is applied to the hook between the hook and the pipe 23d. A click mechanism (not shown) is provided to allow the hook to rotate in the pipe extension direction when acts. Each pipe 2 of the rear guide 17
The total length of 3a, 23b, 23c, 23d at the maximum extension is
A sufficient acid treatment effect is obtained while the laver net 2 subjected to the acid treatment in the part of the acid treatment mechanism 26 described later relatively moves at least to the rear end of the rear guide portion 17 as the laver work boat 10 advances. It is long enough to be able to float in the air just for the time you get it.

In order to return the pipes 23b, 23c and 23d from the maximum expanded state, the pipes 23a, 23c
A wire (not shown) is inserted through the center of b, 23c, 23d, one end of the wire is fixed to the innermost pipe 23d, and the other end of the wire is connected to a motor (not shown) dedicated to pulling back. ing.

The front guide section 15 and the upper guide section 1
The width of No. 6 may be substantially the same as the width L2 of the nori net 2 or larger than the width L2 of the nori net 2.

As described above, the front guide portion 15 can be divided and rotated at an engagement portion with the upper guide portion 16 by an appropriate engagement means 19 such as a bolt (not shown). When the work boat 10 reciprocates to the farm, the front guide portion 15 can be pulled out of the sea, without receiving seawater resistance, and preventing the front guide portion 15 from being damaged or broken at the time of berthing. Although preferred in the sense, there is essentially no problem if all are fixed without being divided.
In addition, the tip shape of the front guide portion 15 is not limited to a U-shape, and is not particularly limited as long as it is a shape such as a V-shape that can smoothly scoop the laver net 2 floating on the sea surface as the laver work boat 10 advances. It is not something to be done.

In the vicinity of the bow of the hull 12, a conventionally known laver cutting mechanism 27 is disposed below the front guide portion 15. This mowing mechanism 2
7, a plurality of L-shaped blades (not shown) radially arranged are rotatably arranged, so that the laver hanging from the laver net 2 cultivated on the laver net 2 is automatically cut. Can be reaped.

An acid treatment mechanism 26 and an acid treatment mechanism 26 are provided at a substantially central portion of the hull 12 so that an accommodating portion 28 for harvesting the seaweed cut from the laver net 2 prevents acid treatment liquid to be described later from being mixed therein. The seaweed cut from the laver net 2 by the cutting mechanism 27 is stored in the storage unit 28 while sliding on the deck inclined toward the storage unit 28. It has become.

An acid treatment mechanism 26 for applying acid treatment to laver is disposed at a position downstream of the cutting mechanism 27 of the hull 12 in the traveling direction. The acid treatment mechanism 26 is for applying an acid treatment to the laver net 2 in which the seaweed has been cut and which is in a drained state. The acid treatment mechanism 26 is an acid treatment pipe that extends horizontally over the entire width of the upper guide portion 16. Are formed by spraying an acid treatment liquid from the lower surface side of the laver net 2 through a number of injection holes (both not shown). Further, the acid treatment mechanism 26 may be configured to allow the laver net 2 to pass while being immersed in the acid treatment liquid, and the configuration may be selected according to the purpose of the acid treatment. This acid treatment mechanism 2
At a position downstream of the laver net 2 in the traveling direction of No. 6, a permeation promoting mechanism 29 for increasing the permeation rate of the acid-treated solution into the cells of the laver is provided.

By driving the acid treatment mechanism 26 and the permeation promoting mechanism 29 without driving the cutting mechanism 27, it is also possible to perform only the acid treatment of the laver.

A steering room 30 is provided at the rear end of the hull 12, and the height of the steering room 30 is adjusted so that the traveling of the laver net 2 on the guiding device 14 is not hindered.
The steering room 30 is provided with a control unit (not shown) for commanding and controlling the operations of the mowing mechanism 27, the acid treatment mechanism 26, etc., and all operations can be performed in the steering room 30. Most preferred.

A storage section 28 for storing the cut seaweed.
The components and the like after the acid treatment mechanism 26 are completely isolated by a not-shown separator or the like.

Next, the operation of the present embodiment having the above-described configuration will be described with reference to FIGS.

FIG. 5 is an explanatory view showing the working state of the laver cultivation apparatus according to the present invention to which the laver culturing method according to the present invention is applied.

According to the laver cultivation apparatus 1 of the present embodiment,
In the expanded state of the laver net 2, as shown in FIG. 2, the laver net 2 is stretched between the columns 5 with a slack suspension line 6, and the slack of the suspension line 6 is loosely fitted to the column 5. It can be absorbed by the sedimentary body 8 which can move up and down along the column 5. And as shown in FIG.
Each of the suspension ropes 6 is made taut by the weight of the sedimentary body 8, and the ropes 3, 3 located in the lateral direction of the laver net 2 are supported by the respective pillars 5 located on both outer sides in the lateral direction of the laver net 2. , And as a result, the laver net 2 can always be positioned substantially at the center of the width interval L of the column 5.

As described above, the length L1 of the hanging rope 6 is set to a length that can be expressed by L <(L1 + L2 + L1).
Within the range of 1, the laver net 2 can be made to follow and keep a state where it is always located substantially at the center of the width interval L of the column 5.

Further, since the laver net 2 is urged toward each of the columns 5 by the sedimentary body 8 and is positioned substantially at the center of the width interval L of the columns 5, normal wind, waves,
Even when affected by wind waves such as tidal currents,
The laver net 2 can be positioned substantially at the center of the width interval L of the column 5.

That is, the sedimentary body 8 of the present embodiment functions as the extension position control means 9 for always positioning the laver net 2 substantially at the center of the width interval L of the support 5 in the state where the laver net 2 is extended.

According to the laver cultivation apparatus 1 of the present embodiment, the laver net 2 can be positioned substantially at the center of the width interval L of the strut 5 when the laver net 2 is in the extended state. When performing various operations such as a mowing operation and / or an acid treatment operation by using the front guide unit 15, even when there is a wind wave composed of a normal wind, a wave, a tidal current, or the like, unlike the related art, The seaweed net 2 can be continuously scooped from the sea surface, so there is no need to measure the time zone where wind waves and the like affect the seaweed net 2 such as when the tide stops. The time is long, and the workability can be reliably improved.

Further, according to the laver cultivation apparatus 1 of the present embodiment, when performing various operations such as cutting and / or acid treatment using the laver work boat 10, the laver net 2 is moved from the sea surface. When the sedimentary bodies 8 are continuously scooped, the weights of the sedimentary bodies 8 are connected to the struts 3 located on the lateral side of the laver net 2 in the lateral direction of the laver net 2 via the suspension ropes 6, respectively. 5 while maintaining the state in which the laver net 2 is positioned substantially at the center of the width interval L of the column 5 as shown in FIG. Can be urged toward the guide means 14 while being pulled in the direction, so that when the scooped seaweed net 2 is guided above the hull 12 from the bow side to the stern side by the guide means 14, the seaweed net 2 2 can be prevented from moving freely, It can be securely held within the moss network 2 of a predetermined work area.

That is, the sedimentary body 8 of the present embodiment functions as the work position control means 11 for holding the laver net 2 within the working area of the laver work boat 10 at least at the time of work.

As described above, the laver cultivation apparatus 1 of the present embodiment is
According to this, the positional relationship of the laver net 2 with respect to the width interval L of the strut 5 in the extended state and the working state is always maintained substantially at the center of the width interval L of the strut 5, and the laver net 2 scooped up at the time of work is Since it can be reliably prevented from freely moving on the guide means 14, when working on the laver net 2, it is necessary to wait for the tide to stop, or to wait for a time when the sea surface is at a desired height. The time constraint described above can be reduced, work time can be reliably increased, and workability can be improved.

In addition, the laver cultivation apparatus 1 of the present embodiment
Since the sedimentary body 8 can be carried out with a very simple operation of loosely fitting the sedimentary body 8 to the strut 5 of the laver net 2 spread on the strut 5 by the existing conventional strut method, the labor required for installation and Cost increases can also be reduced.

In the present embodiment, the sedimentary body 8 is loosely fitted to the column 5 so that the sedimentary body 8 has the functions of the extension position control means 9 and the work position control means 11 together. However, the extension position control means 9 and the work position control means 11 may be configured so that the suspension rope 6 itself has the function of the sedimentation body 8 by making the suspension rope 6 heavy.

As the work position control means 11, FIG.
And positioning guide device 3 shown by imaginary lines in FIG.
1 may be arranged on the guide means 14 of the laver work boat 10 at appropriate intervals. This positioning guide device 3
As shown in FIG. 6, 1 has a box-shaped driving device 32 at the center in the width direction of the hull 12, and a driving motor (not shown) is housed inside the driving device 32. A rotary shaft 33 is attached to the drive device 32 as a drive mechanism that extends to both sides through the drive device 32 and reaches both side ends of the hull.
By driving the drive motor of the drive device 32, the drive device 32 can be driven to rotate. Further, spiral guide wires 34 as guide members are provided on the outer periphery of both sides of the driving device 32 of the rotating shaft 33, respectively.
3, and the guide wire 34 is
The helical directions are formed on both sides of the driving device 32 so as to be symmetrical with each other. Then, by driving the drive motor to rotate the rotation shaft 33, the guide wire 34 is also driven to rotate, whereby the laver net 2 scooped from the sea surface is moved between the pipes 20 and 20 of the guide means 14. If it is not located at the center, that is, if the laver net 2 leans on any one of the pipes 20 of the guiding means 14, at least one of the suspension ropes 6 located in the short direction of the laver net 2 has a guide wire. 34, and can be guided by the spiral and moved to the side of the hull 12 so as to keep the laver net 2 within the working area above the laver work boat 10. Is available.

It is desirable that the positioning guide device 31 be disposed as close to the bow as possible in order to keep the laver net 2 within the working area.

Further, by using the positioning guide device 31 in common with the sedimentary body 8 described above, the laver net 2 can be more reliably held in the range of the work area above the laver work boat 10 in FIG. It shows a positioning guide means 31A of another example as the work position control means 11, and the positioning guide means 31A of the present embodiment has an outer peripheral surface of the rotating shaft 33 and a peripheral surface on the free end side of the rotating shaft 33. A guide roller 35 as a tapered guide member having a smaller diameter is disposed, and the guide roller 35 is rotated together with the rotation of the rotating shaft 33, so that the suspension rope 6 is provided on the outer periphery of the guide roller 35. When it is positioned, the suspension rope 6 can be moved by the inclination of the guide roller 35, and as a result, the laver net 2 can be moved within the working area above the laver work boat 10. And it is capable of holding.

Note that the present invention is not limited to the above-described embodiment, and can be changed as needed.

[0060]

As described above, according to the laver cultivation method and the laver cultivation apparatus of the present invention, the positional relationship with the width of the strut of the laver net in the extended state and the working state is always substantially the center of the width of the strut. It is possible to prevent the seaweed net that has been scooped up during the work from freely moving on the guide means, so when you work on the seaweed net, you can wait for the tide to stop, There is an extremely excellent effect that time constraints such as waiting for a time zone when the sea surface reaches a desired height are reduced, work time is reliably increased, and workability can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of an example of an embodiment of a laver cultivation apparatus according to the present invention to which a laver cultivation method according to the present invention is applied.

FIG. 2 is an explanatory view of the laver net of FIG. 1 viewed from a short side direction.

FIG. 3 is a side view showing a main part of a laver work boat as an example of an embodiment of the laver aquaculture apparatus according to the present invention to which the laver aquaculture method according to the present invention is applied.

FIG. 4 is a plan view of FIG. 3;

FIG. 5 is an explanatory view showing a working state of the laver cultivation apparatus according to the present invention to which the laver culturing method according to the present invention is applied.

FIG. 6 is an explanatory view showing an example of a positioning guide device as a work position control means of the laver culture apparatus according to the present invention to which the laver culture method according to the present invention is applied.

FIG. 7 is a view similar to FIG. 6, showing another example of a positioning guide device as a working position control means of the laver culture apparatus according to the present invention to which the laver culture method according to the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Nori cultivation apparatus 2 Nori net 5 Prop 6 Suspension line 8 Sediment body 9 Extension position control means 10 Nori work boat 11 Work position control means

Claims (4)

[Claims] When a seaweed net for cultivating seaweed is anchored to a support standing upright from the sea floor by a suspension rope, a width interval of the struts located on both outer sides in the lateral direction of the seaweed net is L, When the length is L1 and the width of the laver net is L2, L <(L
(1 + L2 + L1) A laver cultivation method in which the laver is stretched so as to be positioned substantially at the center of the width of the strut. 2. When a laver net for cultivating laver is anchored to a pole standing upright from the sea floor by a suspension rope, a width interval between pillars located on both outer sides in the lateral direction of the laver net is L, and the width of the suspension rope is When the length is L1 and the width of the laver net is L2, L <(L
1 + L2 + L1) In a laver cultivation method in which the laver net is extended by being locked in a relation of 1 + L2 + L1 and the expanded laver net is guided above the laver work boat, the laver net is placed above the laver work boat during the work. A seaweed cultivation method characterized in that the seaweed is kept within the range of the work area. 3. In a case where a laver net for cultivating laver is fixed to a column standing from the sea bottom with a suspension line, a width interval of columns located on both outer sides in the lateral direction of the laver net is L, and a width of the suspension line is L. When the length is L1 and the width of the laver net is L2, L <(L
1 + L2 + L1) In a laver cultivation apparatus used for a laver cultivation method that is spread by locking in a relation of (1 + L2 + L1), a laver net, a plurality of columns erected from the sea bottom, and a suspension for locking the laver net to the column. A rope, and having a spreading position control means for holding the laver net approximately at the center of the width interval of the struts located on both outer sides in the lateral direction of the laver net when the laver net is spread between the struts. Nori cultivation equipment characterized by the above-mentioned. 4. When a laver net for cultivating laver is anchored to a support standing upright from the sea floor by a suspension rope, a width interval of the supports located on both outer sides in the lateral direction of the laver net is L, When the length is L1 and the width of the laver net is L2, L <(L
1 + L2 + L1) in a nori cultivation apparatus used in a nori cultivation method for performing the work by guiding the expanded nori net to the upper side of the nori work boat, at least at the time of work, A seaweed cultivation apparatus comprising a work position control means for holding the seaweed within a work area of the seaweed work boat.