JP7491520B2 - Wasabi Cultivation System - Google Patents

Description

The present invention relates to a wasabi cultivation system for cultivating wasabi.

Traditionally, wasabi has generally been cultivated in wasabi fields created in mountainous areas with clear streams, but in recent years, techniques have been proposed to increase wasabi production, such as those described in Patent Document 1.

The technology described in Patent Document 1 is a method of cultivating wasabi in which a large number of cultivation containers are arranged in a location suitable for cultivating wasabi, and the first to fourth layers of cultivated soil are packed into each of these cultivation containers in layers, and wasabi seedlings or the like are planted in the second layer during or after the work of packing the cultivated soil is completed. Alternatively, each cultivation container filled with cultivated soil is arranged in a location suitable for cultivating wasabi, and piping is provided so that nutrient water (cultivation water) can be supplied to each of these cultivation containers, and the nutrient water is supplied from the piping to the surface of each cultivation container and passed through the cultivated soil.

Japanese Patent No. 3270846

However, in the technology described in Patent Document 1, multiple holes are formed at regular intervals in the piping, and nutrient water is supplied to the surface of the cultivated soil in each cultivation container from these holes. However, since the nutrient water is only supplied to a part of the cultivated soil surface in each cultivation container, the temperature of the cultivated soil rises. As a result, the temperature of the nutrient water passing through the stems and roots of the wasabi becomes high, which causes the problem of the plant being infected with diseases such as soft rot and black spot disease.

In addition, each cultivation container described in Patent Document 1 requires four layers of soil to be packed in layers, so it is necessary to use a container that is relatively deep. Such deep containers are bulky, and there is a problem in that it is time-consuming to transport a large number of cultivation containers.

Therefore, the present invention has been made in consideration of the above problems, and has an object to provide a wasabi cultivation system that can reliably supply the amount of cultivation water necessary for wasabi cultivation, thereby providing an extremely favorable environment for wasabi cultivation.

In order to achieve this object, the invention described in claim 1 provides a wasabi cultivation device comprising a cultivation container that is open at the top for cultivating wasabi, cultivated soil contained in the cultivation container, a spray pipe that is located above the top surface of the cultivated soil, and a plurality of spray nozzles that are disposed in the spray pipes at a position lower than the leaves of the wasabi, the spray nozzles spray cultivation water at an obtuse angle so that the cultivation water spreads downward from the spray nozzle, and the angle at which the cultivation water spreads can be adjusted by rotating the tip of the spray nozzle in a clockwise or counterclockwise direction, and the cultivation water is sprayed from adjacent spray nozzles at an obtuse angle so that the cultivation water spreads downward from the spray nozzles at an obtuse angle. The cultivation water sprayed from the nozzles is sprayed so that at least a portion of the nozzles overlap on the cultivated soil, so that the cultivation water is sprayed from the multiple nozzles onto almost the entire surface of the cultivated soil , and the wasabi cultivation device is characterized in that a plurality of rows of the wasabi cultivation device are installed in a water storage section at regular intervals, and each row of the wasabi cultivation device has a plurality of the spray pipes arranged parallel to each other in the longitudinal direction of the rows, and the wasabi is disposed on both sides of each of the multiple spray pipes in the parallel spray pipes .

In addition, the invention described in claim 2 is characterized in that, in addition to the configuration described in claim 1 , the side wall portion of the cultivation container is configured to be foldable.

The invention described in claim 3 is characterized in that, in addition to the configuration described in claim 1 or 2 , the entire till soil is made of gravel, the diameter of which is 10 to 15 mm.

The invention described in claim 4 is characterized in that, in addition to the configuration described in claim 3 , the cultivation container has a bottom portion in which the tillage soil is contained, and this bottom portion has a plurality of holes formed therein that are smaller than the diameter of the gravel and through which the wasabi roots pass.

In addition, the invention described in claim 5 is characterized in that, in addition to the configuration described in any one of claims 1 to 4, the cultivation container has a bottom portion in which the cultivation soil is directly contained at a position above the lowest part, and the height of the water level in the water storage portion is set to be the same as the height of the bottom surface of the cultivation container.

According to the invention described in claim 1 , the nozzle portion of the injection piping is configured so that the cultivation water is sprayed from the nozzle portion in a spreading manner, so that the cultivation water is sprayed from multiple nozzle portions over almost the entire surface of the soil. This makes it possible to reliably supply the amount of cultivation water necessary for wasabi cultivation, and creates an extremely favorable environment for wasabi cultivation.

In addition, according to the invention described in claim 2 , the side wall portion of the cultivation container is configured to be foldable, so that the container can be made compact by folding it for transportation, and a large number of cultivation containers can be easily transported.

According to the invention as set forth in claim 3 , the entire surface soil is made of gravel with a diameter of 10 to 15 mm, thereby making it possible to extremely improve water permeability and water cooling properties.

According to the invention described in claim 4 , the cultivation container has a bottom portion in which the tillage soil is stored, and this bottom portion has a plurality of holes formed therein that are smaller than the diameter of the gravel and through which the wasabi roots pass, so that it is possible to promote the growth of the wasabi without impeding the growth of the wasabi roots.

According to the invention described in claim 5 , the cultivation container has a bottom portion in which the cultivation soil is directly stored at a position above the lowest part, and the height of the water level in the water storage portion is set to be the same as the height of the bottom of the cultivation container. Therefore, even if the wasabi roots grow below the bottom portion, they will be submerged in the cultivation water, providing an environment suitable for cultivating wasabi and making it possible to promote the growth of wasabi.

1 is a schematic plan view showing a wasabi cultivation system in which a plurality of wasabi cultivation devices according to one embodiment of the present invention are installed in a water storage section. FIG. FIG. 2 is a perspective view showing a cultivation container in the wasabi cultivation apparatus according to one embodiment of the present invention. FIG. 2 is a perspective view showing the cultivation container of FIG. 1 in a folded state. 2 is a schematic plan view showing a state in which cultivation water is being sprayed from a spray pipe into the cultivation container of FIG. 1. [0023] FIG. FIG. 2 is an enlarged cross-sectional view showing a state in which cultivation water is being sprayed from a spray pipe into the cultivation container of FIG. 1 .

The following describes an embodiment of the present invention in detail with reference to the drawings.

[One embodiment]
Fig. 1 to Fig. 5 show one embodiment of the present invention. Fig. 1 is a schematic plan view showing a wasabi cultivation system in which a plurality of wasabi cultivation devices according to one embodiment of the present invention are installed in a water storage section. Fig. 2 is a perspective view showing a cultivation container in the wasabi cultivation device according to one embodiment of the present invention. Fig. 3 is a perspective view showing a state in which the cultivation container of Fig. 1 is folded up. Fig. 4 is a schematic plan view showing a state in which cultivation water is being sprayed from a spray pipe to the cultivation container of Fig. 1. Fig. 5 is an enlarged cross-sectional view showing a state in which cultivation water is being sprayed from a spray pipe to the cultivation container of Fig. 1.

As shown in Figure 1, the wasabi cultivation system 1 has a water storage pool 2 as a water storage section, in which a vinyl sheet 4 (shown in Figure 5) is laid, and sand is spread almost evenly on the vinyl sheet 4. A drain pipe (not shown) is installed in the water storage pool 2 to drain the groundwater circulating inside.

Five cultivation containers 10 of the wasabi cultivation device 5 for cultivating wasabi are connected to the water storage pool 2, and these cultivation containers 10 are arranged in six rows at regular intervals. Two spray pipes 20 are arranged parallel to each other in each row of cultivation containers 10. The spray pipes 20 in each row are made of 25 mm polyvinyl chloride pipes. The spray pipes 20 in each row are connected to the water supply pipe 3 via a water volume adjustment valve (not shown). This water supply pipe 3 is supplied with cultivation water pumped from a well (not shown). This cultivation water is groundwater that does not contain bacteria such as germs and E. coli, and is pumped from a well that is 30 m or more deep underground.

The wasabi cultivation device 5 of this embodiment includes a cultivation container 10, a cultivation soil 14 (described later) contained in the cultivation container 10, the above-mentioned injection pipe 20, and a plurality of injection nozzles 21 (shown in Figures 4 and 5) arranged on the injection pipe 20.

The cultivation container 10 has a bottom surface 11 that is open at the top. As shown in FIG. 5, the water storage pool 2 is set so that its depth D (the height of the water surface) is the height H1 of the bottom surface 11 of the cultivation container 10. In this embodiment, the height H1 of the bottom surface 11 of the cultivation container 10 is set to, for example, 15 cm.

Next, we will explain the specific configuration of the cultivation container 10 in the wasabi cultivation device 5 of this embodiment.

As shown in Figures 2 and 3, the cultivation container 10 is open at the top and is formed in a square shape in a plan view, with the length of each side set to 110 cm. The cultivation container 10 has a base portion 12 on the bottom side that is square in a plan view, and side wall portions 13a that can be folded inward are continuously provided on the upper surfaces of two opposing sides of the four sides of this base portion 12. Side wall portions 13b are fixed vertically to the other two opposing sides of the four sides. The height H2 of these side wall portions 13a, 13b is set to 30 cm.

As shown in FIG. 5, the cultivation container 10 contains about 30 cm of cultivated soil 14, such as river gravel or artificial aggregate. In this embodiment, the cultivated soil 14 is made entirely of one type of gravel with a diameter of 10 to 15 mm. The bottom surface 11 of the cultivation container 10 has numerous drainage holes (not shown), and a net 15 of, for example, 5 mesh is laid on the bottom surface 11. The net 15 and the numerous drainage holes are smaller than the diameter of the gravel and are large enough for the roots of wasabi to pass through.

Wasabi W seedlings are planted in the cultivated soil 14 of the cultivation container 10. Specifically, in this embodiment, 12 wasabi W seedlings are planted in one cultivation container 10 as shown in FIG. 4. As described above, two spray pipes 20 are arranged parallel to each other in one cultivation container 10, and these two spray pipes 20 are arranged horizontally at a position about 5 cm above the top surface of the cultivated soil 14. These spray pipes 20 are provided with six spray nozzles 21, three for each cultivation container 10. The tips of these six spray nozzles 21 are arranged at a position lower than the leaves of the wasabi W. The six spray nozzles 21 are configured to spray 1.5 to 2.5 L of cultivation water in a mist form per minute for one cultivation container 10.

Twelve wasabi plants W are planted in the cultivation container 10 on either side of the injection pipe 20, sandwiched between six injection nozzles 21. Each injection nozzle 21 is configured to inject the cultivation water at a wide angle (obtuse angle) so that the cultivation water spreads widely, and the angle at which the cultivation water spreads can be adjusted by rotating the tip in a clockwise or counterclockwise direction. The cultivation water injected from adjacent injection nozzles 21 is injected so that at least a portion of the injection nozzles overlap on the cultivated soil 14. Therefore, the cultivation water is injected from each injection nozzle 21 over almost the entire surface of the cultivated soil 14.

Next, the operation of this embodiment will be explained.

As shown in FIG. 1, in this embodiment, six rows of five connected cultivation containers 10 are arranged at regular intervals on a vinyl sheet 4 in a water storage pool 2. In this case, each cultivation container 10 may contain cultivated soil 14, or it may be filled later. In this embodiment, it is only necessary to fill the cultivation container 10 with one layer of cultivated soil 14, without filling the cultivation container 10 with multiple layers of cultivated soil, making it extremely easy to fill the cultivation container 14. Two injection pipes 20 are arranged in parallel to each other in each row of cultivation containers 10, and these injection pipes 20 are connected to a water supply pipe 3 via a water volume adjustment valve (not shown). Cultivation water is supplied to this water supply pipe 3 from a well.

Next, 12 wasabi plants W are planted in each cultivation container 10. Then, groundwater is pumped up from the well and supplied to the water supply pipe 3. This groundwater passes through each injection pipe 20 and is sprayed from each injection nozzle 21 onto almost the entire surface of the cultivated soil 14 in the cultivation container 10 as shown in FIG. 4.

In addition, in this embodiment, it is possible to spray cultivation water from each nozzle 21 over almost the entire surface of the cultivated soil 14, so there is no need to cover the cultivated soil with topsoil as in the past, and there is no need to provide multiple layers of cultivated soil to spread the water over almost the entire surface of the cultivated soil 14. Therefore, in this embodiment, clogging of the cultivated soil 14 can be prevented, and the soil will not be affected by diseases such as soft rot and black spot disease.

In addition, in this embodiment, each injection port 21 is positioned lower than the leaves of the wasabi W, so that the cultivation water can be supplied immediately to the roots of the wasabi W at a low temperature as soon as possible after injection. This reduces the time that the cultivation water is exposed to warm air, and prevents the cultivation water from becoming too hot.

By arranging each injection nozzle 21 at a position lower than the leaves of the wasabi W, a cold-retaining space is formed above the top surface of the soil 14 due to the cooling effect of the injection, and the temperature around the wasabi W can be maintained at a temperature suitable for cultivation.

Furthermore, the cultivation water sprayed onto the till 14 comes into contact with the till 14 as it flows down through the till 14 and is cooled. Here, in this embodiment, the till 14 is entirely made of gravel with a diameter of 10 to 15 mm, which makes it possible to achieve extremely good water permeability and water cooling properties.

Furthermore, this cultivation water flows into the water storage pool 2 to a depth D of 15 cm, soaking the roots of the wasabi W that have grown below the bottom surface 11 of the cultivation container 10.

In this embodiment, the nozzle 21 of the injection pipe 20 is configured to inject the cultivation water from the nozzle 21 in a spreading manner, so that the cultivation water is injected from the multiple nozzles 21 over almost the entire surface of the soil 14. This ensures that the amount of cultivation water required for cultivating the wasabi W is supplied reliably, and an extremely favorable environment for cultivating the wasabi W is obtained.

In addition, according to this embodiment, the two side walls 13a of the cultivation container 10 are foldable, so that the container can be folded for transportation to reduce its size, making it easy to transport a large number of cultivation containers 10.

Furthermore, according to this embodiment, the entire topsoil 14 is made of gravel with a diameter of 10 to 15 mm, which allows for extremely good water permeability and water cooling properties.

Furthermore, according to this embodiment, the cultivation container 10 has a bottom surface 11 in which the cultivation soil 14 is stored, and this bottom surface 14 has a plurality of holes formed therein that are smaller than the diameter of the gravel and through which the roots of the wasabi W pass, so that it is possible to promote the growth of the wasabi W without inhibiting the growth of the roots of the wasabi W.

In this embodiment, multiple wasabi cultivation devices 5 are arranged in the water storage pool 2, and the cultivation container 10 has a bottom surface 11 in which the cultivation soil 14 is directly stored at a position above the lowest part of the cultivation container 10. The height of the water surface of the water storage pool 2, i.e., the depth D of the water storage pool 2, is set to be the height H1 of the bottom surface of the cultivation container 10. Therefore, even if the roots of the wasabi W grow below the bottom surface 11, they will be submerged in the cultivation water, providing an environment suitable for cultivating the wasabi W and making it possible to promote the growth of the wasabi W.

[Other embodiments]
Although each embodiment of the present invention has been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, modifications, and combinations can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope of the invention and its equivalents described in the claims, as well as in the scope and gist of the invention.

For example, in the above embodiment, an example was described in which five cultivation containers 10 were connected together and these cultivation containers 10 were arranged in six rows at regular intervals, but the number of cultivation containers 10 connected, the number of rows to be arranged, and the direction in which they are arranged can be changed as appropriate based on the planar shape of the water storage pool 2 in which they are to be installed.

In the above embodiment, a 5-mesh net 15 is laid on the bottom 11 of the cultivation container 10, but the bottom 11 may be formed with holes smaller than the diameter of the gravel and large enough for the roots of the wasabi to pass through. In this case, the net 15 is not necessary.

In addition, in the above embodiment, an example was described in which 12 wasabi W were planted in one cultivation container 10, and a total of six injection nozzles 21 were arranged, three for each cultivation container 10, but the number of wasabi W and the number of injection nozzles 21 may be other than the above as long as the amount of cultivation water required for cultivating the wasabi W can be reliably supplied and an environment favorable for cultivating the wasabi W is obtained.

In the above embodiment, an example in which the side walls 13b on two sides are fixed is described, but this is not limiting and these side walls 13b may also be configured to be foldable in the same way as the side walls 13a on two sides. In this way, by folding all the side walls 13a and 13b during transportation, the product can be made even more compact and can be transported easily.

1 Wasabi cultivation system 2 Water storage pool (water storage section)
3 Water supply pipe 4 Vinyl sheet 5 Wasabi cultivation device 10 Cultivation container 11 Bottom surface portion 12 Base portion 13 Side wall portion 14 Plow soil 15 Net 20 Injection pipe 21 Injection nozzle portion W Wasabi

Claims (5)

Wasabi cultivation equipment:
a cultivation container having an opening at the top for cultivating wasabi;
Cultivation soil contained in the cultivation container;
A jet pipe arranged at a position above the top surface of the tilled soil;
a plurality of injection ports disposed in the injection pipe at a position lower than the wasabi leaves;
The nozzles are configured to spray the cultivation water at an obtuse angle so that the cultivation water spreads downward from the nozzles, and the spreading angle of the cultivation water can be adjusted by rotating the tip of the nozzle in a clockwise or counterclockwise direction, and the cultivation water sprayed from adjacent nozzles is sprayed so that at least a portion of the cultivation water overlaps on the cultivated soil, so that the cultivation water is sprayed from the multiple nozzles onto approximately the entire surface of the cultivated soil ,
The wasabi cultivation device is installed in a water storage section in a plurality of rows at regular intervals, and in each row of the wasabi cultivation device, a plurality of the injection pipes are arranged in parallel to each other in the longitudinal direction of the row,
A wasabi cultivation system , characterized in that the wasabi is arranged on both sides of each of the plurality of injection ports of the parallel injection pipes . 2. The wasabi cultivation system according to claim 1 , wherein the cultivation container has a foldable side wall portion. 3. The wasabi cultivation system according to claim 1, wherein the entirety of the till is gravel, the diameter of which is 10 to 15 mm. The wasabi cultivation system according to claim 3, characterized in that the cultivation container has a bottom portion in which the tillage soil is accommodated, and a plurality of holes smaller than the diameter of the gravel and through which the roots of the wasabi pass are formed in the bottom portion. The wasabi cultivation system according to any one of claims 1 to 4, characterized in that the cultivation container has a bottom portion in which the tillage soil is directly stored at a position above the lowest part of the cultivation container, and the height of the water level in the water storage section is set to be the height of the bottom surface of the cultivation container.

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