JPH05292847A - Raising seedling method and raising seedling apparatus for sea algae using ultra-stiff consistency concrete - Google Patents

Abstract

PURPOSE:To provide a raising seedling method and apparatus for sea algae utilizing ultra-stiff consistency concrete by placing a raising seedling apparatus made of ultra-stiff consistency concrete and placed in a water tank and allowing spares or planospores of sea algae such as algae and seaweeds to make adhere and grow in a space of the raising seedling apparatus. CONSTITUTION:A raising seedling apparatus 2 composed of plates made of ultra-stiff consistency concrete, having a prescribed shape and containing interconnected spaces is placed in a prescribed water tank 1 and seawater is passed through the water tank 1 through an inlet port 3 at a constant flow rate. A mother seedling of sea algae is fixed to a part near the inlet port 3 to effect the dispersion of the spores of the mother seedling with the seawater flowing into the tank. The dispersed spores are attached to and grown on the surface of the space in the plate 2 of ultra-stiff consistency concrete. The plate 2 of ultra-stiff consistency concrete is produced by adding 75-80wt.% of granular aggregate such as limestone or quartzite crushed to prescribed mesh, 0-0.6wt.% of a cement setting agent and the remaining part of water to 20-25wt.% of cement and integrally forming the mixture.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for planting seaweeds and a planting apparatus using superhard concrete, and in particular, algae in the voids of the plate of superhard concrete laid in a water tank, It grows by attaching spores or zoospores of seaweed such as seaweed.

[0002]

2. Description of the Related Art When algae, seaweeds, etc. that grow on rocks in the sea grow, small shrimp, shellfish, and fish gather, so that medium-sized organisms that eat these small organisms gather and Large creatures to eat gather. By repeating such a process, a large amount of seafood is gathered for seaweeds, so that the resources of these seafood are increased.

However, recently, a large amount of industrial wastewater has flowed into the coastal area of the near sea, polluting the seawater, and causing shore burning.
Currently, there is a shortage of seaweeds to feed seafood. Therefore, in recent years, in order to artificially grow seaweeds jointly by the public and private sector, the artificial surface of spores or zoospores has been created by cleaning the seashore, artificial stones have been installed in the stones and in the sea. Attempts have been made to root algae, seaweeds, etc. in order to restore seaweeds to the sea.

[0004]

As an attempt to solve the problem, at present, parental seedlings of seaweed are collected from the sea, and the seeds are wrapped in natural stone and put into the sea, or rooted in an artificial fish reef sunk in the sea. Is being done. However, the method of bundling with natural stone has a problem that the parent and seedlings are immediately eaten by fish, shrimp, or the like, and they are washed away by the tidal current and overturned. On the other hand, in the method of rooting in the artificial fish reef that has been sunk, as the artificial fish reef to be used is generally a main body of molded concrete such as raw concrete, cast steel, ceramics, plastic, the surface is flat, and since it is a slippery state, Even if the parental seedling of seaweed releases spores on the surface, it is difficult to settle, and it is often difficult to survive because it is attacked by protozoa and bacteria, and the spores are buried by the mud. Blue seaweed and the like only grow in the area. That is, in order to root the seaweed, it is required that the spores or zoospores released from the parent seedling be uniformly, safely and firmly fixed. Further, even if they adhere, these algae, seaweeds and the like are often washed away by the ocean current in the process of growth, and there is a problem that the fixing rate is low. Furthermore, since the time when the parent seedlings release spores is limited, there is a problem that the time for rooting is also limited.

Further, many conventional seaweed seedling devices are circular vinyl chloride pipes and chemical fiber rope devices, and it is difficult to attach these devices to seaweed reefs or fish reefs after intermediate growing. .. Although a concrete block seedling device is also provided, it is difficult to control the intermediate growing and it is not easy to go offshore. Furthermore, because the planting equipment of this concrete block is exposed to the stormy weather such as a typhoon at an early stage due to the difficulty of management, it often suffers from feeding damage to the seafood because it stops growing in the summer. ..

[0006] Many of the conventional seedling devices are premised on the attachment of natural spores or zoospores of seaweed. Therefore, it is necessary to apply the active ingredient to the seedling device or to attach the spores to the surface. It has been shaped. However, it is difficult for these methods to reliably attach the target seaweed.

Therefore, the object of the present invention is to solve the problems of the conventional artificial cultivation of seaweed and to obtain an efficient seaweed planting method and plant. Is.

[0008]

[Means for Solving the Problems] In order to achieve the above-mentioned object, one or a plurality of plate bodies of cemented concrete having a predetermined shape molded so as to have continuous voids inside is provided with seaweeds. Super-concrete concrete that has spores or zoospores attached to it and has been allowed to grow for a certain period of time in a specified water tank, is fixed to the seabed, and is surrounded by a net or metal frame that has sufficient space around it. Provide a method for planting seaweeds using. Further, a plate body of cemented concrete having a predetermined shape molded so as to have a continuous void inside is laid in a predetermined water tank, and seawater is allowed to flow into the water tank from the inlet with a constant flow velocity. , Fixing the seedlings of seaweed near the inlet,
A method for planting seaweed seedlings using super-hard concrete, in which spores or zoospores of parent seedlings are dispersed in an aquarium by inflowing sea water and adhered to the voids of the plate of super-hard concrete to grow .. In addition, it consists of a plate of ultra-hard concrete that is molded to have continuous voids inside, and uses ultra-hard concrete that can attach spores or zoospores of seaweed to the voids inside. Provide a plant for planting seaweed. Then, the plate body of the superhard concrete is formed integrally by adding a predetermined amount of limestone, a granular aggregate such as silica stone, etc. into cement, and if necessary, a cement setting material and a surface stabilizer. And the plate body of the superhard concrete is 75 to 80% by weight of granular aggregate such as limestone and silica stone crushed to a predetermined mesh in 20 to 25% by weight of cement, and 0% of cement setting material. ~ 0.
6% by weight and the balance moisture are added to provide an integrally molded structure.

[0009]

According to the present invention having the above-mentioned structure, the spores or zoospores of seaweed enter the voids inside the plate body of the superhard concrete and adhere to the spores, and can grow for a certain period of time in a predetermined water tank. Since it can be grown and is fixed to the seabed after it has grown sufficiently, it can surely grow. Therefore, the most difficult intermediate growth can be artificially and reliably performed. Also,
By enclosing the periphery of the seabed with a net, a metal frame, or the like having a sufficient space, it is possible to more reliably grow the seaweed beds and to effectively form the seaweed beds.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway external view showing an entire apparatus for carrying out a seaweed planting method using superhard concrete according to the present invention. 1 is an aquarium, made of glass,
It is made of plastic and iron and has sufficient capacity and suitable shape for seaweed cultivation. Reference numeral 2 denotes a seedling device made of a plate body of superhard concrete, which has a continuous void 4 inside and is molded into a predetermined shape such as a rectangular parallelepiped shape shown in FIG. In the illustrated example, the size is 15 cm × 10 cm × 1 cm. In addition, the surface thereof is formed in an uneven shape, which can protect the spores of seaweeds from the attack of protozoa, bacteria and the like, and can further prevent the mud from covering the spores. One or a plurality of the seedling devices 2 made of a plate body of this superhard concrete is laid on the inner bottom of the water tank 1 so as to have a slight gap therebetween. An inflow port 3 is formed on the side surface of the water tank 1 for inflowing seawater at a constant flow velocity, and parent and seedlings (not shown) are appropriately fixed near the inflow port 3. Then, the seawater is introduced from the inflow port 3.

During the cultivation of seaweed, the spores or zoospores released by the parent seedlings fixed near the inflow port 3 are evenly and evenly dispersed in the aquarium 1 by the seawater flowing in from the inflow port 3, The seedling device 2 made of a superhard concrete slab laid on the inside of the seedling 2 penetrates into the continuous voids 4 to grow and grow, so that the rooting is strong and the growth is fast. In addition, spores or zoospores of seaweed do not use the flow of seawater from the inflow port 3 as described above,
The seedling device 2 made of a plate body of super hard concrete may be invaded into the continuous voids 4 by another method or any other method at another place to settle.

When the seaweed grows to a certain size, the seedling device 2 made of a superhard concrete plate is pulled out of the aquarium 1 to a suitable place in the sea, for example, bedrock.
Alternatively, it should be fixed and installed by an appropriate means such as attaching to a fish reef. Since the seaweeds that have been installed have already grown and are firmly rooted in the voids 4 of the plate body 2 of superhard concrete,
It will not be washed away by tidal currents. Also, in order to protect seaweeds from food damage by seafood depending on the surrounding conditions, the surroundings are surrounded by nets, metal frames, etc. that have sufficient space. Therefore, small sea prawns, shellfish, and fish are collected by the seaweeds, so that medium-sized organisms that feed on these small organisms gather, and then large-sized organisms that eat these medium-sized organisms gather. By repeating this process, seaweed beds can be created and the resources of seafood can be increased.

This seedling device 2 made of a plate of super-hard concrete is prepared by adding a predetermined amount of granular aggregate such as limestone or silica stone into cement, and if necessary, a cement setting material or a surface stabilizer. Is added and kneaded to be molded. When kneading, it is appropriate from the viewpoint of wet strength etc. that the shaped shape is retained as it is, that is, the shapeability is such that the shape can be held by hand. The mixing ratio of the above-mentioned limestone, granular aggregate such as silica stone, cement setting material, and cement of the surface stabilizer is not particularly limited, in order to create a super hard concrete having a porosity suitable for each fishing ground. In addition, the content of each of the above components can be appropriately selected experimentally.

In a preferred embodiment, cement 20-
75-80% by weight of granular aggregate (for example, crushed stone of No. 7) such as limestone and silica stone crushed to a predetermined mesh in 25% by weight, 0-0.6% by weight of cement congealing material, and residual water added It is better to use integrally molded ultra-hard concrete, and the strength and water permeability of the seedling device 2 composed of the plate of the obtained ultra-hard concrete becomes good, and the spores of seaweed that have invaded inside the voids Easy to settle. Therefore, three types of samples were manufactured by adjusting the mixing ratio of the particulate aggregate such as limestone and silica stone and the cement condensate and the water content based on the distribution example shown in Table 1.

[0015]

[Table 1]

Sample 1, manufactured according to Table 1 above
Tables 2 and 3 show the results of measuring the compressive strength after 1 day, the compressive strength after 28 days and the water permeability, respectively.
The water permeability was measured to measure the porosity.
The better the water permeability, the higher the porosity.

[0017]

[Table 2]

Sample 1 in Table 2 has a water permeability of 29 g / c.
m ² · min, the water permeability was the best among the three samples and the porosity was high, but the compressive strength after one day and after 28 days was the weakest among the three samples. Therefore, if the compressive strength becomes weaker than the above Sample 1, there is a risk that the molded body will be destroyed by waves during long-term use. Therefore, the lower limit of the mixing ratio of cement is 20% from the amount of cement in Sample 1. is there. On the other hand, Sample 3 has the highest compressive strength after 1 day and 28 days of the three samples, and does not break due to waves even during long-term use, but has the lowest water permeability of the three samples. , There are few voids to grow seaweed spores. Therefore, if this water permeability is less than that of Sample 3, there is a possibility that the porosity becomes low and the fixing rate after adhesion of algae and seaweeds becomes weak, and the viscosity at the time of mixing becomes too large, so that the mixture within the mold has Since the filling work into the cement becomes difficult, the upper limit of the mixing ratio of cement is 25%. When the mixing ratio of the cement is determined, the mixing ratio of the granular aggregate such as silica is inevitably also determined, and the mixing ratio is appropriately 75 to 80% by weight from the samples 1 and 3 in Table 1. Further, the cement coagulant may be added if necessary, so that the mixing ratio is 0 to
0.6% by weight is suitable. On the other hand, sample 2 in Table 1 has good strength and porosity, and is most suitable among the three samples as super-hard concrete for growing spores of seaweed.

Then, spores of scabbard are sprinkled by using the seedling plant 2 made of a superhard concrete plate having the above-mentioned construction, and after intermediate growing in an indoor water tank, this seedling plant 12
Each piece was fixed to a seaweed reef that had been deposited at a depth of 8 m, and the progress was observed.
grew to cm.

[0020]

EFFECTS OF THE INVENTION According to the present invention described in detail above, spores or zoospores that fix and release parent seedlings in the vicinity of the inlet in the aquaculture facility are dispersed in the aquarium by the inflowing seawater, so that uniform Can be evenly dispersed in In addition, spores penetrate into the continuous voids inside the seedling device consisting of a plate of superhard concrete laid in the aquarium and settle, so that the rooting is strengthened and seaweeds are extremely settled. The growth is quick, and the growth after attachment is progressing smoothly.

When the seaweed grows to a certain size, the planter made of a plate of ultra-hard concrete is pulled out of the aquarium 1 and nailed to a suitable place in the sea, such as bedrock or a fish reef. It is fixed and installed by an appropriate means such as.
Since the seaweeds that have been installed have already grown and are firmly rooted in the voids of the plate body of the superhard concrete, they will not be washed away by tidal currents or the like. Therefore, if protected in advance with a net, a metal frame, etc., it will not be eaten by fish, spiny lobster, etc. during the course of growth, and the amount of seaweed can be increased. And after growth, this seaweed makes a small shrimp,
Since shellfish and fish gather, medium-sized organisms that feed on these small organisms gather and large-sized organisms that feed on these medium-sized organisms gather. By repeating such a process, the resources of seafood can be increased and a seaweed bed can be reliably formed in a short period of time. Further, according to the present invention, since seaweeds can be grown in aquaculture equipment, it is more efficient than transplanting parent seedlings directly in the sea, and there is no time restriction.
Further, since the plate body is composed of only super-hard concrete, as compared with the case of using normal ready-mixed concrete, it is easier for lye to escape from the concrete, and sufficient structural strength can be obtained. Also, a great effect such as no deterioration even when used for a long time is obtained.

[Brief description of drawings]

FIG. 1 is a partially cutaway external view showing the entire apparatus according to a method for growing seedlings of seaweed using super-hard concrete according to the present invention.

FIG. 2 is a perspective view of a plate body of super hard concrete.

FIG. 3 is a partially enlarged view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Water tank 2 ... Seedling plant consisting of a plate of super hard concrete 3 ... Inflow port 4 ... Void

Front page continuation (72) Inventor Kazuo Okabayashi 2-25 Hagicho, Kochi City, Kochi Prefecture Toyo Denka Kogyo Co., Ltd.

Claims (6)

[Claims] 1. A spore or a zoospore of a seaweed is attached to one or a plurality of plates of a superhard concrete having a predetermined shape formed so as to have a continuous void inside, and a spore or a zoospore of the seaweed is attached to the plate for a predetermined period of time. A method for planting seaweeds using ultra-hard concrete, characterized in that an intermediately grown one is fixed to the seabed. 2. Seaweed spores or zoospores are attached to one or more plates of superhard concrete having a predetermined shape formed to have continuous voids inside, and the spores or zoospores of the seaweed are attached for a certain period of time in a predetermined water tank. A method for planting seaweeds using ultra-hard concrete, characterized in that the grown ones are fixed to the seabed, and the surroundings are surrounded by a net or a metal frame with sufficient space. 3. A plate body of cemented concrete having a predetermined shape formed so as to have continuous voids inside is laid in a predetermined water tank, and seawater is introduced into the water tank at a constant flow velocity. The seaweed parent seedlings in the vicinity of the inlet, and the spores or zoospores of the parent seedlings are dispersed in the water tank by the inflowing seawater and adhered to the voids of the superhard concrete plate. A method for planting seaweeds using superhard concrete, which is characterized in that the seedlings are grown by growing. 4. An ultra-hard concrete comprising a plate of ultra-hard kneading concrete having a predetermined shape formed to have continuous voids inside, and capable of adhering spores or zoospores of seaweed to the internal voids. Seaweed planting device using concrete. 5. The plate body of the superhard concrete is obtained by adding a predetermined amount of granular aggregate such as limestone or silica stone into cement,
A method of planting seaweeds or a planting apparatus using the superhard concrete according to any one of claims 1, 2, 3 and 4, which is integrally molded by adding a cement setting material and a surface stabilizer as required. .. 6. The plate body of ultra-hard concrete is 75 to 80% by weight of granular aggregate such as limestone and silica stone crushed to a predetermined mesh in 20 to 25% by weight of cement, and 0% of cement setting material. A method for planting seaweeds or a planting machine using the superhard concrete according to any one of claims 1, 2, 3 and 4, which is integrally formed by adding the remaining amount of water to 0.6% by weight.