JP2004097009A - Apparatus for culturing seed and seedling - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for culturing seeds and seedlings designed to reduce an occupied area of a site required for culturing a unit amount of the seeds and seedlings of seaweed, improve operating efficiency and raise quality. <P>SOLUTION: A plurality of culturing vessels 15 are provided at an interval kept in the vertical directions with a support. Thereby, the occupied area of the site required for culturing the unit amount of the seeds and seedlings 12 of the seaweed can be reduced. The water depth of culturing water stored in the culturing vessels 15 is set as small as 5-10 cm and the culturing water is circulated with a circulating means 17. Air is fed to stir the culturing water. Liftable and lowerable illuminating tool 41 is installed. Operating efficiency can be improved by reducing the water depth and making the illuminating tools 41 liftable and lowerable. Furthermore, the high-quality seeds and seedlings 12 can be cultured by circulating and stirring the culturing water and illuminating the culturing vessels 15. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a seedling cultivation apparatus for cultivating seeds of seaweed such as, for example, Honda straw, alame, squid and kelp.
[0002]
[Prior art]
FIG. 5 is a perspective view showing a water tank 1 according to the related art. The marine pollution is remarkable, the overfishing of fish and shellfish has progressed, and there is a concern that the animals and plants in the ocean are depleted. In view of this problem, seaweeds are artificially grown on the sea floor, and artificially formed fish reefs. In order to propagate the seaweed on the seabed, a member for seaweed formation is installed on the seabed so that seaweed seeds and zoospores (spores) can easily grow on the seabed. This technique merely installs a member on which seaweed seeds and zoospores are likely to grow, and must expect that seaweed seeds and zoospores will naturally grow and grow (for example, Patent Document 1). reference).
[0003]
On the other hand, there is a technique in which seaweed seeds are cultivated on land and transplanted to the seabed to actively propagate the seaweed on the seabed. In this technique, a water tank 1 as shown in FIG. 1 is used for culturing seaweed seeds on land. Seawater is stored in the water tank 1, and a growing member 2 having seaweed seeds or spores attached thereto is attached to the water tank 1. Seaweed seeds are cultivated side by side at the bottom.
[0004]
The aquarium 1 is not a dedicated aquarium for cultivating seaweed seeds, but a main purpose of cultivating marine organisms other than seaweeds such as sea urchin (sea urchin) and abalone (abalone). A water tank has been diverted. This is because the position of the seaweed cultivation field in the fishery industry is low, and culturing seaweed alone is not profitable. Therefore, in culturing seaweed, a water tank formed mainly for culturing such other marine organisms is primarily diverted.
[0005]
The water tank 1 is configured such that a water depth H0 of 30 cm or more can be secured. This is because it is suitable for cultivating sea urchin and abalone as described above, and when culturing seaweed seeds, the illuminance required for culturing is secured by sunlight, but the rise in water temperature due to sunlight is suppressed. The water tank 1 is at least 0.5 m in order to secure stability against the above-mentioned water depth H0. ² It has the above bottom area. Such a water tank 1 is used side by side on the floor of a culture facility.
[0006]
[Patent Document 1]
JP-A-5-8871
[0007]
[Problems to be solved by the invention]
In the configuration in which the water tanks 1 are arranged on the floor as in the conventional technique, the occupied area of the floor required for culturing a unit amount of seeds increases. Also, if the water depth H0 is large, the amount of seawater used for cultivation increases, and it becomes difficult to secure seawater used for cultivation, and it becomes difficult to supply and discharge seawater to the water tank 1, resulting in poor workability. In addition, when the bottom area of the water tank 1 is large, it is difficult to make the environment in the water tank 1 uniform, and the growth of seeds and seedlings varies, thereby lowering the quality.
[0008]
An object of the present invention is to provide a seed and cultivation apparatus that can reduce the occupied area of a site necessary for culturing a unit amount of seaweed seeds, improve workability, and improve quality. It is.
[0009]
[Means for Solving the Problems]
The present invention stores a culture water for culturing seaweed seeds, and a plurality of culture tanks in which seaweed seeds are cultured,
A seed and cultivation apparatus comprising: a support for supporting each of the culture tanks at intervals in a vertical direction.
[0010]
According to the present invention, a support is provided, and a plurality of culture tanks are provided at intervals in the vertical direction by the support. In this way, the arrangement of a plurality of culture tanks is developed so that they are stacked vertically, so compared to the case where they are arranged side by side on the floor in a horizontal direction, the site required for cultivating a unit amount of seaweed seeds is Occupied area can be reduced. Thus, the site where the seedling culture device is installed can be effectively used, and it is effective and economical. This makes it possible to culture as many seaweed seeds and seedlings as possible on a site with the smallest possible area. Therefore, for example, large-scale cultivation of seeds and seedlings becomes possible, which can improve profitability and contribute to new business development.
[0011]
Further, the present invention is characterized in that the culture tank is configured so that the depth of the culture water stored is 5 cm or more and 10 cm or less.
[0012]
According to the present invention, the culture water is stored in the culture tank such that the water depth is 5 cm or more and 10 cm or less. In order to culture seaweed seeds, the culture tank must have a minimum amount of culture water. However, even if the depth of the culture water is secured more than necessary, the required amount of seawater only increases. Culture water is sufficient for cultivation of seaweed seeds if the water depth is 5 cm or more and 10 cm or less. After reducing the water depth of the culture water to secure the minimum amount required for culture, the culture used for culture Water can be minimized.
[0013]
If the amount of culture water can be reduced in this way, it becomes easy to secure this culture water, and it becomes easy to supply and discharge the culture water to and from the culture tank, thereby improving workability. Further, if the culture water can be reduced, for example, when a nutrient such as a nutrient is added to the culture water, the amount of the nutrient that must be added in order to obtain a nutrient concentration suitable for culture can be reduced.
[0014]
In addition, if the depth of the culture water is reduced, a stable culture tank having a small bottom area can be formed. If the bottom area of the culture tank can be reduced, the environment in the culture tank can be easily made uniform, the growth of seaweed seeds can be prevented from varying, and high quality can be maintained.
[0015]
Further, the present invention is characterized in that a circulating means for supplying culture water to each culture tank and collecting culture water from each culture tank is further included.
[0016]
According to the present invention, the circulating means supplies the culture water to each of the culture tanks, collects the culture water from each of the culture tanks, and circulates the culture water in each of the culture tanks. By circulating the culture water in each culture tank in this manner, the environment of each culture tank such as the temperature of the culture water and the amount of nutrients in the culture water can be kept constant. By circulating the culture water, a flow of the culture water can be generated in the culture tank. By flowing the culture water in this way, the roots of the seaweed called temporary roots are formed so that the seedlings can withstand the fluid resistance, and a strong seedling can be grown. In addition, by generating a flow in the culture tank, the environment in the culture tank can be made uniform, and the growth of the seaweed seeds can be prevented from varying, and high quality can be maintained.
[0017]
In the present invention, the circulating means may include:
A supply unit that supplies culture water to a culture tank provided at the top of each culture tank,
A flow-down channel forming unit that is provided in association with two vertically adjacent culture tanks and guides culture water in an upper culture tank to a lower culture tank;
A collection unit for collecting culture water from a culture tank provided at the lowest position.
[0018]
According to the present invention, the culture water is supplied to the uppermost culture tank by the supply unit, sequentially flows down to the lower culture tank by the downflow path forming unit, and is collected from the lowermost culture tank by the collection unit. can do. In this way, by circulating the culture water from the uppermost culture tank to the lowermost culture tank and circulating the culture water, the circulation of the culture water in each culture tank can be achieved with simple piping.
[0019]
Further, the present invention is characterized in that it further includes lighting means provided above each of the culture tanks and having a plurality of lighting devices for irradiating the culture tank with illumination light.
[0020]
According to the present invention, it is possible to illuminate and irradiate each culture tank with illumination light by each lighting fixture. By using such lighting means, the illuminance in the seaweed seeds can be kept constant without changing the illuminance depending on the weather as in the case of using only sunlight as illumination. . Therefore, with respect to the illuminance, an environment suitable for raising seeds and seedlings can be maintained.
[0021]
Further, the present invention is characterized in that it further includes an adjusting means for adjusting a distance between each of the culture tanks and each of the lighting devices.
[0022]
According to the present invention, the distance between each culture tank and each lighting fixture can be adjusted by adjusting means. Thus, when growing seaweed seeds, the required illuminance can be obtained by minimizing the distance between each culture tank and each lighting fixture, minimizing energy consumption as much as possible. In addition, when workers work on the culture tank, such as taking seaweed into and out of each culture tank, cleaning and repairing each culture tank, the distance between each culture tank and each lighting fixture should be as large as possible, and a large work space should be provided. Obtainable. As described above, the distance between each culture tank and each lighting fixture can be changed according to the situation, which is convenient.
[0023]
The present invention is further characterized by further comprising a stirring means for stirring the culture water in each culture tank.
[0024]
According to the present invention, the culture water in each culture tank is stirred by the stirring means. By agitating the culture water in this manner, a flow is generated in the culture water in each culture tank, and the environment in the culture tank can be made uniform. Quality can be maintained. In addition, by generating a flow of culture water in the culture tank, roots of seaweed called temporary roots are formed so that the seeds can withstand the fluid resistance, so that strong seeds can be grown.
[0025]
Further, the present invention is characterized in that the stirring means is means for supplying air by bubbling air into culture water in each culture tank.
[0026]
According to the present invention, the culture water is agitated by supplying air into the culture water of each culture tank by bubbling air. By supplying air to the culture water in this way, in addition to the effect of the above-described stirring, air can be dissolved in the culture water, and culture water suitable for culturing seaweed seeds rich in air is provided. Obtainable.
[0027]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a front view showing a seedling culture apparatus 10 according to one embodiment of the present invention. FIG. 2 is a cross-sectional view illustrating a part of the seedling culture apparatus 10 in an enlarged manner. In order to artificially proliferate seaweed on the seabed and artificially form a fish reef that serves as a habitat for fish and shellfish, a seaweed seedling 12 is cultured in a cultivation place provided on land, and the seedling 12 is placed on the seabed. Transplant to the transplant location. The seedling cultivation apparatus 10 of the present invention is used for culturing a seedling 12 of a seaweed at a culture place. The seaweeds are, for example, Honda straw, alame, squid and kelp.
[0028]
The seed and cultivation apparatus 10 includes a plurality of culture tanks 15 in which culture water 14 is stored, and a support 16 that supports each culture tank 15. The seed and seedling culturing apparatus 10 further includes a circulating unit 17 for circulating culture water in each of the culture tanks 15, an illuminating unit 18 for illuminating the inside of each of the culturing tanks 15, a holding unit 19 for suspending and holding the illuminating means 19, Stirring means 20 for stirring the culture water in each of the culture tanks 15. In the present embodiment, eight culture tanks 15 are provided.
[0029]
3, referring to FIG. 1 and FIG. 2 together, each culture tank 15 has a rectangular cylindrical peripheral wall portion 21 and a bottom portion 22 that closes the peripheral wall portion 21 from below. It is formed. The height H21 of the peripheral wall portion 21 is, for example, 12 cm. The bottom 22 has a rectangular shape when viewed from the thickness direction, and has a long side dimension L22 of, for example, 70 cm, and a short side direction W22 of, for example, 50 cm. Therefore, the bottom area of the culture tank 15 is 0.35 m ² It is.
[0030]
These culture tanks 15 are tanks for culturing the seeds 12 of the seaweed, and store culture water for culturing the seeds 12 of the seaweed. The water depth H14 of the culture water 14 is, for example, 5 cm or more and 10 cm or less, and is 10 cm in the present embodiment.
[0031]
The culture vessel 15 is provided at one corner thereof with a discharge pipe 23 substantially vertically through the bottom 22. The discharge pipe 23 is provided densely with respect to the bottom part 22, the upper end part projects into the culture tank 15 and opens in the culture tank 15, and the lower end part opens below the culture tank 15. The projecting height H23 of the discharge pipe 23 from the bottom 22 is 10 cm.
[0032]
By providing such a discharge pipe 23, when the culture water 14 has an amount exceeding the water depth H14 in the culture tank 15, a part of the culture water 14 overflows into the discharge pipe 23, and the culture water 14 is cultured through the discharge pipe 23. It is discharged out of the tank 15. Culture water 14 is stored in such a culture tank 15 so that the water depth H14 becomes 10 cm.
[0033]
In each culture tank 15, a seaweed plate 40, which is a culture member to which seaweed seeds or zoospores (spores) are attached, is provided in a state of being immersed in the culture water. The seaweed plate 40 is generally a flat plate having a rectangular shape when viewed from the thickness direction. For example, the shape when viewed from the thickness direction is a square having a side of 80 mm and a flat plate having a thickness of 1.5 mm. . The seaweed plate 40 is made of, for example, a synthetic resin, and may be a sheet obtained by cutting the center of a double raschel made of, for example, a polylactic acid material, or may be a sheet of a fiber net, and is excellent in impact resistance and durability. .
[0034]
The culture tank 15 is provided with a plurality of, for example, 40 seaweed plates 40 arranged in a grid on the bottom 22. By providing each seaweed plate 40 in the culture tank 15, the seaweed seeds or zoospores attached to the seaweed plate 40 germinate, and the seeds 12 grow by absorbing nutrients from the culture water. The seaweed seeds 12 are thus cultured.
[0035]
As the culture water 14 stored in the culture tank 15, seawater is basically used. Seawater originally contains nutrients such as nutrients, and seawater can be used as it is as culture water. Alternatively, culture water in which nutrients are adjusted by adding nutrients such as nutrients to seawater may be used. It is not always necessary to use seawater. For example, culture water obtained by adding nutrients to tap water, river water, and lake water may be used. In any case, culture water 14 suitable for culturing seaweed is used based on the type of seaweed.
[0036]
The support base 16 includes a pair of vertical members 24 provided substantially vertically at intervals in the horizontal direction, and a plurality of horizontal members 25 provided at intervals in the vertical direction, in other words, spaced apart in the vertical direction. , Assembled into a shelf. In the present embodiment, six horizontal members 25 are provided, each horizontal member 25 is provided between each vertical member 24, and both ends of each horizontal member 25 are connected to each vertical member 24.
[0037]
Each culture tank 15 is placed on such a horizontal member 25 of the support 16, and each culture tank 15 is supported by the support 16 at intervals in the vertical direction that is the vertical direction. Specifically, two of the six horizontal members 25 are respectively placed on the four horizontal members 25 at an intermediate position in the vertical direction, excluding the uppermost horizontal member 25 and the lowermost horizontal member 25. ing. As described above, the culture tanks 15 are arranged in multiple stages in the vertical direction, specifically, in four stages, and two in each stage.
[0038]
The two culture tanks 15 placed on one horizontal member 25 are arranged in a direction from one vertical member 24 to the other vertical member 24. Among the culture tanks 15, the four culture tanks 15 near one vertical member 24 are arranged vertically, and the four culture tanks 15 near the other vertical member 24 are aligned vertically. Are located.
[0039]
The circulating means 17 is a means for supplying the culture water 14 to each culture tank 15 and recovering the culture water 14 from each culture tank 15. The circulating unit 17 includes a storage unit 26, a supply unit 27, a downflow path forming unit 28, and a collecting unit 29.
[0040]
The storage unit 26 is a culture water tank that stores the culture water 14 that is seawater, and has a tank body 30 and a filter body 31. The culture water can be stored in the tank body 30, and the filter body 31 filters the culture water 14 flowing into the tank body 30 to remove foreign substances. Such a storage section 26 is provided, for example, on a horizontal member 25 disposed at the lowest position of the support base 16.
[0041]
The supply unit 27 supplies the culture water 14 to the uppermost culture tank 15 of the culture tanks 15. Specifically, the respective culture tanks 15 are arranged in multiple stages in the vertical direction as described above, and the two culture tanks 15 arranged in the uppermost stage, and thus the four culture tanks 15 on which the culture tanks 15 are placed, are arranged. The culture water 14 is supplied to two culture tanks 15 placed on the uppermost horizontal member 25 of the horizontal members 25.
[0042]
The supply unit 27 includes a culture water pump 33 serving as a culture water supply drive source that pumps up and discharges the culture water 14 from the tank body 30 via the pumping line 32, and a culture water 14 discharged from the culture water pump 33. And a water supply conduit 34 for leading to the two uppermost culture tanks 15. The water supply pipe 34 is open at a corner located diagonally to a corner where the discharge pipe 23 is provided in the two culture tanks 15 arranged at the uppermost position. 14 is supplied.
[0043]
The flow-down channel forming unit 28 is provided between the two vertically adjacent culture vessels 15 in each of the vertically arranged culture vessels 15, and transfers the culture water 14 of the upper culture vessel 15 to the lower culture vessel 15. Lead. The flow-down channel forming section 28 has a plurality of connection pipes 35 that connect the two vertically adjacent culture tanks 15 respectively. One end of each connection conduit 35 is connected to the lower end of the discharge pipe 23 of the upper culture tank 15, and the other end is connected to the corner where the discharge pipe 23 is provided in the lower culture tank 15. An opening is formed at a diagonally located corner, and the culture water 14 is discharged at this corner.
[0044]
The collection unit 29 collects the culture water from the culture tank 15 provided at the lowest among the culture tanks 15. Specifically, the respective culture tanks 15 are arranged in multiple stages in the vertical direction as described above, and the two culture tanks 15 arranged at the lowest stage, and thus the four culture tanks 15 on which the culture tanks 15 are placed, are arranged. The culture water 14 is collected in the storage 26 from the two culture tanks 15 placed on the lowermost horizontal member 25 of the horizontal members 25.
[0045]
The collecting section 29 has two collecting pipes 36. It is realized by. One end of each collection pipe 36 is connected to the lower end of the discharge pipe 23 of the two lowermost culture tanks 15, and the other end is open so as to discharge to the reservoir 26. The culture water 14 discharged from each recovery pipe 36 is filtered by the filter 31 and flows into the tank body 31.
[0046]
By providing such a circulating unit 17, the culture water 14 is supplied to the uppermost culture tank 15 by the supply unit 27. Each of the culture tanks 15 is discharged from the discharge pipe 23 when the culture pipe 14 is provided with the discharge pipe 23 and the culture water 14 is stored at a depth at which the water depth H14 is set. In this embodiment, the culture water 14 has a depth exceeding 10 cm. Is done. Therefore, the culture water 14 supplied to the uppermost culture tank 15 sequentially flows down to the lower culture tank 15 by the flow-down channel forming unit 28, and finally flows to the lowermost culture tank 15. The culture water 14 in the lowermost culture tank 15 is collected by the collection unit 29 into the storage unit 26. In this way, the culture water 14 is circulated to each culture tank 15. The flow rate of the culture water 14 supplied to each of the culture tanks 15 by the circulation means 17, that is, the flow rate Q of the culture water 14 circulated to each of the culture tanks 15 is, for example, 2 L / min.
[0047]
The seedling culture device 10 also supplies the culture water acquisition pipe 38 for supplying fresh culture water 14 to the storage unit 26, and thus seawater pumped from the ocean, and the old culture water 14 from the storage unit 26. And a disposal line 39 for disposal. The culture water acquisition conduit 38 allows the culture water 14 obtained from seawater to be used as the culture water 14 to be discarded. The circulating culture water 14 can be exchanged in this manner. The seawater obtained by the culture water obtaining conduit 38 is configured to be filtered by the filter 31 and flow into the tank body 30, and the eggs of the fish and shellfish and the undesired seaweed seeds and zoospores obtained together with the seawater. For example, impurities are not circulated.
[0048]
The illuminating means 18 has a plurality of luminaires 41 provided above the respective culture tanks 15. Each lighting device 41 is a device for irradiating the inside of each culture tank 15 with illumination light, and includes an electric lamp 44 as a light emitting source and a reflector 45 that covers the electric lamp 44 from above. The lighting fixture 41 can irradiate the inside of the culture tank 15 with the illumination light emitted by the electric lamp 44 directly or by reflecting the light by the reflector 45, and can efficiently illuminate.
[0049]
Each lighting fixture 41 is suspended by the holding means 19 from a horizontal member 25 disposed above, specifically, a horizontal member 25 one upper side of the horizontal member 25 on which the culture tank 15 to be illuminated is supported. It is held down. The holding means 19 is provided corresponding to each lighting fixture 41. It has a hanging member 47.
[0050]
Each hanging member 47 is a flexible string-shaped member, and has a locking piece 48 at one end. A locking hole 50 that penetrates each of the horizontal members 25 disposed above each lighting fixture 41 is formed in a portion above each lighting fixture 41, and each hanging member 47 has a locking hole 50. The other ends are connected to the lighting equipment 41, respectively.
[0051]
Each suspending member 47 can suspend the lighting fixture 41 by engaging the locking piece 48 with the peripheral edge of the locking hole 50 of the horizontal member 25. In this state, the lighting device 41 is arranged at a first position close to the culture tank 15. The distance Dn41 between the lighting fixture 41 and the bottom 22 of the culture tank 15 is, for example, 15 cm in a state where the lighting fixture 41 is placed at the first position indicated by the solid line in FIG.
[0052]
The reflector 45 of each lighting fixture 41 has a rectangular shape, and the lighting fixture 41 covers the culture tank 15 from above in a state where the lighting fixture 41 is at the first position. By providing one fluorescent lamp having an output of 20 W as the electric lamp 44, such a lighting device 41 can obtain an illuminance in the seaweed plate 40 of about 5,000 lux to 10,000 lux suitable for culture. When in the first position, the certifying device 41 is placed on the inside of the culturing tank 15 by a distance of about 10 cm from one side of the culturing tank 15 so as to supply the culturing water 14 to the culturing tank 15. Making it possible.
[0053]
In the horizontal member 25, locking portions 51 are formed at positions spaced from the locking holes 50, respectively. The locking portion 51 is configured to lock the locking piece 48 of the suspension member 47. Therefore, each suspending member 47 can suspend the lighting fixture 41 by retaining the retaining piece 48 to the retaining portion 51 of the horizontal member 25. In this state, the lighting fixture 41 is located at a second position that is above the first position and far from the culture tank 15. The distance Dd41 between the lighting fixture 41 and the bottom 22 of the culture tank 15 is, for example, 30 cm in a state where the lighting fixture 41 is placed at the second position indicated by the phantom line in FIG.
[0054]
As described above, the holding unit 19 also has a function as an adjusting unit that can adjust the distance between each culture tank 15 and each lighting fixture 41. In other words, the operator manually operates each of the hanging members 47 to change the position where the locking piece 48 is locked, thereby reducing the distance between each culture tank 15 and each lighting fixture 41. Each can be adjusted individually.
[0055]
The stirring means 20 is means for stirring the culture water 14 in each culture tank 15, and in this embodiment, is a means for supplying air to the culture water 14 in each culture tank 15 by bubbling air. The agitating means 20 includes a plurality of air outlet members 54 provided in the respective culture tanks 15 by being immersed in culture water, a compressor 55 as an air supply drive source for taking in and discharging air around the seedling culture device 10. And an air guide conduit 56 that guides the air discharged from the compressor 55 to each of the air outlet members 54.
[0056]
Each air ejection port member 54 is called an air stone or the like, and can foam the supplied air into bubbles and eject it. Each of the air outlet members 54 is provided at a corner diagonally opposite to a corner where the discharge pipe 23 is provided in each of the culture tanks 15, in other words, the culture water in the water supply pipe 34 or the connection pipe 35. 14 is provided at a position where an opening for discharging 14 is arranged.
[0057]
By supplying air from the compressor 55 to each of the air outlet members 54 via the air guide conduit 56, air bubbles 57 are blown out of each of the air outlet members 54 into the culture water 14 stored in the culture tank 15. can do. By ejecting the air 57 thus bubbled, the culture water 14 stored in the culture tank 15 can be stirred. Each of the air ejection port members 54 is provided so as to eject air in a direction different from the upward direction, for example, in a horizontal direction, instead of upward, so that the stirring effect can be enhanced.
[0058]
FIG. 4 is a cross-sectional view showing the seedling culture building 60. The seedling cultivation building 60 is a building in which the seedling cultivation apparatus 10 is installed, and a seedling cultivation space 62 which is an indoor space connected to an entrance that can be opened and closed by a door 61 is formed. In the embodiment, six seedling culture devices 10 are installed. In the seed and seedling cultivation space 62, a work space having a width of about 1 m connected to the entrance and an arrangement area for disposing the seed and cultivation apparatus 10 on both sides of the work space are formed, and three of these arrangement areas are provided. The seedling culture devices 10 are arranged side by side. With this arrangement, the various seedling culture devices 10 can be arranged facing the working space.
[0059]
When a plurality of seedling culture devices 10 are provided adjacent to each other in this manner, in the present embodiment, the stirring means 20 may be partially shared by the various seedling culture devices 10. Specifically, one compressor 55 may be shared by the various seedling culture apparatuses 10.
[0060]
Further, an air conditioner 65 for adjusting the temperature of the seedling culture space 62 is provided, and the temperature of the seedling culture space 62 can be kept constant. In this way, the temperature of the culture water 14 can be kept constant by heat exchange with the air in the seedling culture space 62 without directly controlling the temperature of the culture water 14. Temperature can be easily set to a temperature suitable for cultivation with simple equipment as compared with the case where the temperature is directly controlled. In other words, if the indirect temperature control of the culture water 14 by air conditioning is adopted, there is no need to provide a temperature control means for each circulating water system, that is, for each of the various seedling culture devices 10, and the configuration can be simplified. . When using such air-conditioning type water temperature control, the capacity of the seedling culture space 62 is set to 40 m. ³ In the following, a general-purpose air conditioner can be used.
[0061]
In particular, since the air in the seedling culture space 62 is blown out into the culture water 14 of each culture tank 15 by the compressor 55, the temperature of the culture water 14 can be easily controlled. As described above, the stirring unit 20 is also configured to contribute to the temperature control of the culture water 14, and the configuration can be simplified as compared with a case where the temperature controlling unit is provided separately from the stirring unit 20. Further, in the present embodiment, the water depth H14 of the culture water 14 in the culture tank 15 is about 10 cm, which facilitates such air-conditioning water temperature adjustment.
[0062]
The seaweed seeds 12 cultivated by such a seedling cultivation apparatus 10 are housed together with the seaweed plate 40 in a transport container. The container is transported near the sea surface above the transplant site using land transportation means and a ship, and then lowered under the sea from the ship, and transported to the transplant site. In this way, the seed and seedling 12 is transported to the transplant site, and the seaweed plate 40 is set at the transplant site, so that it is transplanted to the transplant site.
[0063]
According to the seed and cultivation apparatus 10 of the present embodiment, the plurality of culture tanks 15 are provided by the support 16 at intervals in the vertical direction. Since the arrangement of the plurality of culture tanks 15 is developed so as to be stacked vertically, it is necessary to culture a unit amount of seaweed seeds 12 in comparison with the case where the culture vessels 15 are arranged horizontally on the floor. The area occupied by a large site can be reduced. Further, by arranging as shown in FIG. 4, the site can be used more effectively. Thus, the site where the seedling culture apparatus 10 is installed can be effectively used, and it is effective and economical. This makes it possible to culture as many seaweed seeds and seedlings 12 as possible on a site with an area as small as possible. Therefore, for example, large-scale seed and cultivation 12 can be performed, thereby improving profitability and contributing to new business development.
[0064]
In addition, the culture water 14 is stored in the culture tank 15 so that the water depth H14 is 5 cm or more and 10 cm or less. In order to culture the seaweed seeds 12, the culture tank 15 must have a minimum amount of culture water, but even if the depth 14 of the culture water 14 is secured more than necessary, only the required amount of seawater increases. It is. The culture water 14, if the water depth H14 is about 5 cm or more and about 10 cm or less, is sufficient for the culture of the seaweed seeds and seedlings 12, and the water depth of the culture water 14 is reduced to ensure the minimum amount required for the culture. In addition, the culture water 14 used for the culture can be reduced as much as possible.
[0065]
If the culture water 14 can be reduced in this way, it is easy to secure the culture water 14 and easily supply and discharge the culture water 14 to and from the culture tank 15, thereby improving workability and improving economy. It is a target. Further, if the culture water 14 can be reduced, for example, when a nutrient such as a nutrient is added to the culture water 14, the amount of the nutrient that must be added in order to obtain a nutrient concentration suitable for culture can be reduced. .
[0066]
Further, if the water depth H14 of the culture water 14 is reduced, as described above, 0.35 m ³ It is possible to form a stable and small culture tank with a small bottom area. If the bottom area of the culture tank 15 can be reduced, the environment in the culture tank 15 can be easily made uniform, the growth of seaweed seeds can be prevented from varying, and high quality can be maintained. If the bottom area can be reduced, the installation work and maintenance can be facilitated, the work can be facilitated, and the cost can be reduced.
[0067]
Further, if the water depth H14 of the culture water 14 can be reduced, the water temperature of the culture water 14 can be easily adjusted using air conditioning as described above. Also, when illuminating the inside of the culture tank 15, scattering and attenuation of the illumination light by the culture water 14 are reduced, and as much illuminance as possible can be obtained with as little energy as possible.
[0068]
The circulating means 17 supplies the culture water 14 to each of the culture vessels 15, collects the culture water 14 from each of the culture vessels 15, and circulates the culture water 14 in each of the culture vessels 15. Thereby, the environment of each culture tank 15 such as the temperature of the culture water 14 and the amount of nutrients in the culture water can be kept constant.
[0069]
By circulating the culture water 14, a flow of the culture water can be generated in the culture tank 15. When the culture water 14 is caused to flow down in this manner, the roots of the seaweed called temporary roots are formed so that the seeds 12 can withstand the fluid resistance, so that a strong seedling can be grown. In addition, by generating a flow in the culture tank 15, the environment in the culture tank 15 can be made uniform, and the growth of the seaweed seeds 12 can be prevented from being varied, and high quality can be maintained. As shown in FIG. 3, by arranging the supply and discharge positions of the culture water 14 in the respective culture tanks 15 at diagonal positions, the culture can be performed as uniformly as possible over the entire formation culture tank 15 by the simplest possible route. A stream of water 14 can be formed.
[0070]
Further, the culture water 14 is supplied to the uppermost culture tank 15 by the supply unit 27, sequentially flows down to the lower culture tank 15 by the downflow path forming unit 28, and is collected by the collection unit 29. Can be recovered from In this manner, by circulating the culture water 14 from the uppermost culture tank 15 to the lowermost culture tank 15 and circulating the same, the circulation of the culture water 14 in each culture tank 15 is achieved with a simple pipe. be able to.
[0071]
In addition, each lighting fixture 41 can illuminate each culture tank 15 by irradiating it with illumination light. By using such illumination means 18, it is possible to keep the illuminance of the seaweed seeds 12 constant without the illuminance being changed depending on the weather as in the case of using only sunlight as illumination. Can be. Therefore, with respect to the illuminance, an environment suitable for raising seeds and seedlings can be maintained.
[0072]
Further, the distance between each culture tank 15 and each lighting fixture 41 can be adjusted by the holding means 19 functioning as an adjusting means. Thus, when the seaweed seeds 12 are cultured, the distance between each culture tank 15 and each lighting fixture 41 can be made as small as possible, the energy consumption can be kept as small as possible, and the required illuminance can be obtained. In addition, when the worker works on the culture tank 15 such as putting the seaweed 12 into and out of each culture tank 15 and cleaning and repairing each culture tank 15, the distance between each culture tank 15 and each lighting fixture 41 should be as large as possible. And a large working space can be obtained. As described above, the distance between each culture tank 15 and each lighting fixture 41 can be changed according to the situation, which is convenient.
[0073]
The culture water 14 in each culture tank 15 is stirred by the stirring means 20. By stirring the culture water 14 in this way, a flow is generated in the culture water 14 of each culture tank 15, the environment in the culture tank 15 can be made uniform, and the growth of the seaweed seeds 12 varies. Can be prevented and high quality can be maintained. In addition, by generating a flow of the culture water 14 in the culture tank 15, the roots of seaweed called temporary roots are formed so that the seeds 12 can withstand fluid resistance, and a strong seedling can be grown.
[0074]
The stirring means 20 stirs the culture water 14 in each of the culture tanks 15 by supplying the culture water 14 and air in a bubble form. By supplying air to the culture water 14 in this manner, in addition to the effect of the above-described stirring, air can be dissolved in the culture water 14 and is suitable for culturing the seaweed seeds 12 in which air is abundantly dissolved. Culture water 14 can be obtained. In the present embodiment, the temperature of the culture water 14 can be adjusted at the same time because the air-conditioned indoor air is blown into the culture water 14.
[0075]
Further, since the air ejection member 54 for ejecting air is provided at the supply position of the culture water 14 in the culture tank 15, a synergistic effect with the circulation of the culture water 14 can be obtained. Moreover, since air is blown from the air outlet member 54 toward the downstream side in the direction of the flow, that is, toward the discharge pipe 23, more effective stirring is achieved.
[0076]
As described above, according to the seedling culture apparatus 10 of the present embodiment, many excellent effects can be achieved at the same time. An extremely useful seedling culture device 10 can be realized.
[0077]
The above embodiments are merely examples of the present invention, and the configuration can be changed within the scope of the present invention. For example, the circulation means 17 may be partially shared by the various seedling culturing apparatuses 10. Specifically, one tank body 30, filter 31, and culture water pump 33 may be shared by various seed and cultivation devices 10. Such sharing makes it possible to simplify the configuration and reduce equipment costs.
[0078]
【The invention's effect】
According to the present invention, a support is provided, and a plurality of culture vessels are provided at intervals in the vertical direction by the support. In this way, the arrangement of a plurality of culture tanks is developed so that they are stacked vertically, so compared to the case where they are arranged side by side on the floor in a horizontal direction, the site required for cultivating a unit amount of seaweed seeds is Occupied area can be reduced. Thus, the site where the seedling culture device is installed can be effectively used, and it is effective and economical. This makes it possible to culture as many seaweed seeds and seedlings as possible on a site with the smallest possible area. Therefore, for example, large-scale cultivation of seeds and seedlings becomes possible, which can improve profitability and contribute to new business development.
[0079]
According to the present invention, the culture water is stored in the culture tank such that the water depth is 5 cm or more and 10 cm or less. In order to culture seaweed seeds, the culture tank must have a minimum amount of culture water. However, even if the depth of the culture water is secured more than necessary, the required amount of seawater only increases. Culture water is sufficient for cultivation of seaweed seeds if the water depth is 5 cm or more and 10 cm or less. After reducing the water depth of the culture water to secure the minimum amount required for culture, the culture used for culture Water can be minimized.
[0080]
If the amount of culture water can be reduced in this way, it becomes easy to secure this culture water, and it becomes easy to supply and discharge the culture water to and from the culture tank, thereby improving workability. Further, if the culture water can be reduced, for example, when a nutrient such as a nutrient is added to the culture water, the amount of the nutrient that must be added in order to obtain a nutrient concentration suitable for culture can be reduced.
[0081]
In addition, if the depth of the culture water is reduced, a stable culture tank having a small bottom area can be formed. If the bottom area of the culture tank can be reduced, the environment in the culture tank can be easily made uniform, the growth of seaweed seeds can be prevented from varying, and high quality can be maintained.
[0082]
According to the present invention, the circulating means supplies culture water to each culture tank, collects culture water from each culture tank, and circulates culture water in each culture tank. By circulating the culture water in each culture tank in this manner, the environment of each culture tank such as the temperature of the culture water and the amount of nutrients in the culture water can be kept constant. By circulating the culture water, a flow of the culture water can be generated in the culture tank. By flowing the culture water in this way, the roots of the seaweed called temporary roots are formed so that the seedlings can withstand the fluid resistance, and a strong seedling can be grown. In addition, by generating a flow in the culture tank, the environment in the culture tank can be made uniform, and the growth of the seaweed seeds can be prevented from varying, and high quality can be maintained.
[0083]
Further, according to the present invention, the culture water is supplied to the uppermost culture tank by the supply unit, sequentially flows down to the lower culture tank by the flow-down channel forming unit, and is collected from the lowermost culture tank by the collection unit. Can be recovered. In this way, by circulating the culture water from the uppermost culture tank to the lowermost culture tank and circulating the culture water, the circulation of the culture water in each culture tank can be achieved with simple piping.
[0084]
Further, according to the present invention, it is possible to irradiate and illuminate each culture tank with illumination light by each lighting fixture. By using such lighting means, the illuminance in the seaweed seeds can be kept constant without changing the illuminance depending on the weather as in the case of using only sunlight as illumination. . Therefore, with respect to the illuminance, an environment suitable for raising seeds and seedlings can be maintained.
[0085]
Further, according to the present invention, the distance between each culture tank and each lighting fixture can be adjusted by the adjusting means. Thus, when growing seaweed seeds, the required illuminance can be obtained by minimizing the distance between each culture tank and each lighting fixture, minimizing energy consumption as much as possible. In addition, when workers work on the culture tank, such as taking seaweed into and out of each culture tank, cleaning and repairing each culture tank, the distance between each culture tank and each lighting fixture should be as large as possible, and a large work space should be provided. Obtainable. As described above, the distance between each culture tank and each lighting fixture can be changed according to the situation, which is convenient.
[0086]
Further, according to the present invention, the culture water in each culture tank is stirred by the stirring means. By agitating the culture water in this manner, a flow is generated in the culture water in each culture tank, and the environment in the culture tank can be made uniform. Quality can be maintained. In addition, by generating a flow of culture water in the culture tank, roots of seaweed called temporary roots are formed so that the seeds can withstand the fluid resistance, so that strong seeds can be grown.
[0087]
Further, according to the present invention, the culture water is stirred by supplying air into the culture water in each of the culture tanks in the form of air bubbles. By supplying air to the culture water in this way, in addition to the effect of the above-described stirring, air can be dissolved in the culture water, and culture water suitable for culturing seaweed seeds rich in air is provided. Obtainable.
[Brief description of the drawings]
FIG. 1 is a front view showing a seedling culture apparatus 10 according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view showing a part of the seedling culture apparatus 10 in an enlarged manner.
FIG. 3 is a perspective view showing a culture tank 15;
FIG. 4 is a cross-sectional view showing a seedling culture building 60.
FIG. 5 is a perspective view showing a water tank 1 according to the related art.
[Explanation of symbols]
10 Seedling culture device
12 Seaweed seeds
14 Culture water
15 Culture tank
16 Support
17 Circulation means
18 Lighting means
19 Holding means
20 Stirring means

Claims (8)

Culture water for culturing seaweed seeds is stored, and a plurality of culture tanks in which seaweed seeds are cultured,
A seed and cultivation apparatus comprising: a support for supporting each of the culture tanks at intervals in a vertical direction. The seed and cultivation apparatus according to claim 1, wherein the culturing tank is configured such that the depth of the culturing water stored is 5 cm or more and 10 cm or less. The seed and cultivation apparatus according to claim 1 or 2, further comprising a circulating means for supplying culture water to each culture tank and collecting culture water from each culture tank. The circulation means
Of the respective culture tanks, a supply unit for supplying culture water to a culture tank provided at the uppermost position, and a culture unit provided in association with two culture tanks vertically adjacent to each other, and using the culture water of the upper culture tank as a lower culture tank A downflow path forming section leading to
4. The seed and cultivation apparatus according to claim 3, further comprising a recovery unit configured to recover culture water from a culture tank provided at a lowermost position. The seed and cultivation apparatus according to any one of claims 1 to 4, further comprising lighting means provided above each of the culture tanks and having a plurality of lighting devices for irradiating the culture tank with illumination light. The seedling culture apparatus according to claim 5, further comprising adjusting means for adjusting the distance between each culture tank and each lighting device. The seed and cultivation apparatus according to any one of claims 1 to 6, further comprising stirring means for stirring culture water in each of the culture tanks. The seedling cultivation apparatus according to claim 7, wherein the stirring means is means for supplying air by bubbling air into culture water in each culture tank.

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