WO2022114099A1

WO2022114099A1 - Water-grown wasabi cultivation system and cultivation method

Info

Publication number: WO2022114099A1
Application number: PCT/JP2021/043321
Authority: WO
Inventors: 貴文廣瀬; 佑二木場
Original assignee: 宇部エクシモ株式会社
Priority date: 2020-11-26
Filing date: 2021-11-26
Publication date: 2022-06-02
Also published as: JPWO2022114099A1

Abstract

Provided are: a water-grown wasabi cultivation system that cares for plants during cultivation independently without touching roots or soil, makes it possible to increase the number of roots planted per unit area, and makes it possible to reduce equipment costs while using water efficiently; and a cultivation method therefor.　Provided is a water-grown wasabi cultivation system which is for cultivating water-grown wasabi in two or more stages and which has: a soil holding part that holds soil; a cultivation water discharging part that discharges cultivation water; a plurality of containers, one or more of which is arranged in each stage; and a water conduit pipe that conveys, to a next-stage container, cultivation water discharged from the cultivation water discharging part of an upper-stage container, wherein the end of the water conduit pipe on the next-stage container side is arranged near the soil surface of the next-stage container.

Description

Wasabi cultivation system and cultivation method

This technique relates to the wasabi cultivation system and cultivation method. More specifically, the present invention relates to a wasabi cultivation system and a cultivation method that can realize high efficiency.

Wasabi, a plant unique to Japan, is edible in all parts of its leaves, stems, rhizomes, and roots. In particular, grated wasabi is used as a spice for sushi and soba worldwide. As Japanese food is recognized and established, its demand is increasing. In addition, focusing on the special ingredients contained in wasabi and being used in other dishes, developments related to medicine such as anti-aging are being planned, and further growth in demand is expected in the future.

Sawa wasabi, which is cultivated mainly to obtain rhizomes, is not only adjusted for the environment such as adjusting the amount of exposed light, but also has been devised so that water always flows near the roots and grows. By suppressing the accumulation of the component that becomes an inhibitor in the roots, unlike natural products, improvements have been made to greatly enlarge the rhizomes.

On the other hand, looking at the wasabi production in Japan, it has been steadily declining since 1990, and the current situation is that supply is not balanced with demand. The reason for this is that wasabi cultivation itself takes time and effort, and in addition to the long cultivation period, due to the characteristics of wasabi, the cultivation area is often in the mountainous areas where water is easily drawn in, and the workload is high and natural disasters occur. Because it is easy, it is difficult to carry out stable production activities. Therefore, the shrinking of the cultivated area and the progress of the shortage of successors have become problems. Against this background, various cultivation systems have been proposed, and stable and high-quality wasabi has come to be mass-produced with a good cultivation environment and efficient cultivation equipment.

For example, in Patent Document 1, several cultivation cylinders having slits on the side surface containing wasabi seedlings are inserted into a box containing a medium for soil production on the side surfaces, and water is cultivated from the upper part of a multi-tiered box. A technique is disclosed in which it is possible to handle the strains one by one by flowing them into the soil, and it is possible to cultivate the soil three-dimensionally and increase the number of cultivated plants per unit area.

Patent Document 2 discloses a technique for cultivating three-dimensionally by arranging boxes that reproduce wasabi fields in a staircase pattern and increasing the number of cultivated fields per unit area.

In Patent Document 3, a wasabi field having a highly permeable soil layer was laid, water was drip (sprinkled) from the upper part of the wasabi field to the root of the wasabi seedling, and the water that had permeated the wasabi field was collected again. A system has been proposed that can use the height difference to guide water to other wasabi fields. This method is a cultivation method that can efficiently cultivate wasabi with water while suppressing the amount of water and electric power used. In addition, by using an agricultural house, it is possible to create a more optimal cultivation environment and take measures to prevent insects.

Japanese Unexamined Patent Publication No. 2008-118922 Japanese Unexamined Patent Publication No. 2009-100656 Japanese Unexamined Patent Publication No. 2011-4683

As mentioned above, various techniques have been developed for the cultivation method of wasabi, but the reality is that there are still many issues. Specifically, in the method of Patent Document 1, since the roots spread to the medium in the box, if the roots are to be handled one by one, the roots will be cut from the medium and the growth will stop. There was a problem that it was difficult to move the culture medium. In addition, since the growth space of the shoots and rhizomes is limited by the cultivation tube, there is a problem that the growth of the shoots and rhizomes and the division of the shoots hinder the good growth of the cultivation tube.

Further, in the method of Patent Document 2, since the boxes are arranged in a staircase pattern, in order to secure a cultivation space, a space where no box is not installed is partially created, and the cultivation amount cannot be dramatically improved. There was a problem that the amount of water used could not be suppressed so much even if the water was used continuously in several stages because of the reproduction of a typical wasabi field. In addition, the box weighs several tens of kilograms or more, and there is a problem that it is difficult for one person to process it.

Further, the method of Patent Document 3 requires a large-scale construction in order to construct a structure for efficiently using water, which causes problems such as an increase in initial cost and a limited land to be developed. was there. In addition, the number of wasabi fields cultivated per unit area is the same as that of general wasabi fields, and there is room for improvement. It was difficult to handle the soil one by one without touching it, and there were also issues such as the inability to provide detailed support.

Therefore, with this technology, cultivated plants can be handled independently without touching the plants or soil during cultivation, the number of plants planted per unit area can be increased, and equipment costs can be reduced while using water efficiently. The main purpose is to provide a swamp wasabi cultivation system and its cultivation method that can be suppressed.

That is, in this technique, first, it is a system for cultivating wasabi in two or more stages.
A plurality of containers having a soil holding section for holding soil and a cultivating water discharging section for discharging cultivated water, and at least one arranged in each stage.
It has a water pipe that guides the cultivated water discharged from the cultivated water discharge portion of the upper container to the next container.
Provided is a wasabi cultivation system in which the end of the water pipe on the container side of the next stage is arranged near the soil surface of the container of the next stage.
In the wasabi cultivation system related to this technique, as the cultivated water discharge part,
The permeated water discharge part that discharges the cultivated water that has permeated the inside of the soil,
The surface water discharge part that discharges the cultivation water on the soil surface,
Can be provided.
The wasabi cultivation system according to the present technology can be provided with a cultivated water collecting unit that collects the cultivated water discharged from the seepage water discharge part and the surface water discharge part.
The water pipe can be continuously provided in the cultivated water collecting portion.
In this case, the cultivation water collecting unit may be provided with a dew condensation prevention mechanism and / or a dew condensation water discharge mechanism.
Two or more of the above-mentioned containers can be arranged in each stage of the wasabi cultivation system according to the present technique.
The wasabi cultivation system according to the present technology may be provided with a sprinkling section for sprinkling water on the uppermost container.
In this case, the sprinkler portion may be provided with a sprinkler pipe for sprinkling water near the soil surface of the uppermost container.
The sprinkler pipe may also be provided with a sprinkler position adjusting mechanism.
The Sawa wasabi cultivation system according to the present technology can be provided with a cultivation water reuse unit that sends the cultivation water discharged from the cultivation water discharge unit of the lowermost container to another cultivation system.
In the wasabi cultivation system related to this technique, one wasabi seedling can be planted in each container.
The water pipe of the wasabi cultivation system according to the present technology may also be provided with a water conduction position adjusting mechanism.

In this technique, next, it is a method for cultivating wasabi in two or more stages.
A plurality of containers having a soil holding section for holding soil and a cultivating water discharging section for discharging cultivated water, and at least one arranged in each stage.
It has a water pipe that guides the cultivated water discharged from the cultivated water discharge portion of the upper container to the next container.
Using a wasabi cultivation system in which the end of the water pipe on the container side of the next stage was arranged near the soil surface of the container of the next stage,
The cultivation water supply process for supplying cultivation water to the uppermost container,
A water conveyance process that guides the cultivated water discharged from the cultivated water discharge section of the upper container to the vicinity of the soil surface of the next container.
Cultivation water discharge process for discharging cultivated water from the cultivated water discharge part of the bottom container,
To provide a method for cultivating wasabi.

According to this technology, wasabi can be handled independently without touching the plants and soil during cultivation, the number of plants planted per unit area can be increased, and equipment costs can be reduced while using water efficiently. It can be suppressed.
The effects described here are not necessarily limited, and may be any of the effects described in the present specification.

It is a schematic diagram schematically showing the 1st Embodiment of the wasabi cultivation system 1 which concerns on this invention. A is a schematic perspective view seen from above, and B is a schematic perspective view seen from below. It is a schematic diagram which shows typically the container 11 used in the 2nd Embodiment of the wasabi cultivation system 1 which concerns on this invention. A is a schematic side view seen from the side surface side, and B is a schematic bottom view seen from below. It is a schematic diagram which schematically shows the 3rd Embodiment of the wasabi cultivation system 1 which concerns on this invention, and is the schematic perspective view seen from above. It is a side view schematic view which saw the 4th Embodiment of the wasabi cultivation system 1 which concerns on this technique from the side surface side. It is a schematic diagram which schematically shows the 5th Embodiment of the wasabi cultivation system 1 which concerns on this invention, and is the schematic perspective view seen from above. It is a schematic diagram schematically showing the sixth embodiment of the wasabi cultivation system 1 which concerns on this technique. A is a schematic perspective view seen from above, and B is a schematic perspective view seen from below. It is a schematic diagram schematically showing the 7th Embodiment of the wasabi cultivation system 1 which concerns on this technique. A is a schematic perspective view seen from above, and B is a schematic perspective view seen from below. It is a schematic diagram which schematically shows the 8th Embodiment of the wasabi cultivation system 1 which concerns on this invention, and is the schematic perspective view seen from above. It is a schematic diagram schematically showing the 9th Embodiment of the wasabi cultivation system 1 which concerns on this technique. It is a schematic diagram schematically showing the tenth embodiment of the wasabi cultivation system 1 which concerns on this technique. It is a drawing substitute photograph of wasabi grown by the cultivation system shown in the Example. It is a drawing substitute photograph of wasabi grown by the cultivation system shown in Comparative Example 1.

Hereinafter, suitable embodiments for carrying out the present invention will be described in detail with reference to the drawings.
It should be noted that the embodiments described below show an example of a typical embodiment of the present invention, and the scope of the present invention is not narrowly interpreted by this.

1. 1. Wasabi cultivation system 1
FIG. 1 is a schematic diagram schematically showing a first embodiment of the wasabi cultivation system 1 according to the present invention. 1A is a schematic perspective view seen from above, and FIG. 1B is a schematic perspective view seen from below. The wasabi cultivation system 1 according to the present invention according to the present invention is a system for cultivating wasabi in two or more stages, and has at least a plurality of containers 11 (11a, 11b) and a water pipe 12. .. Further, if necessary, a cultivation water collecting unit 13, a watering unit 14, a cultivation water reuse unit 15, and the like can be provided. Note that FIG. 1 omits holding members such as racks and tables that hold a plurality of containers 11 (11a, 11b). Hereinafter, each part will be described in detail.

(1) Container 11 (11a, 11b)
In the wasabi cultivation system 1 according to the present technique, at least one or more containers 11 (11a, 11b) are arranged in each stage. Each container 11 (11a, 11b) is provided with a soil holding section 111 and a culture water discharging section 112.

The form of the container 11 (11a, 11b) is not particularly limited as long as the soil S can be held. In the first embodiment shown in FIG. 1, a container 11 (11a, 11b) having a circular cross section is used, but the present invention is not limited to this, and for example, the container 11 having an elliptical cross section or a polygonal cross section (11a, 11b) is used. It is also possible to use 11a, 11b). Considering the range in which the wasabi seedlings are rooted, the minor axis of the container 11 (11a, 11b) is preferably 80 mm or more, and from the viewpoint of handleability, the major axis is preferably 450 mm or less. The depth of the container 11 (11a, 11b) is preferably 50 mm or more in consideration of the rooting range, and 450 mm or less is preferable from the viewpoint of handleability.

The weight of the container 11 (11a, 11b) is preferably 20 kg or less, and more preferably 10 kg or less, in a state where the soil S is contained so that the operator can handle it by himself / herself. ..

As the material used for the container 11 (11a, 11b), the material used for the container used for general plant cultivation can be used as long as the effect of the present technique is not impaired. By using an impermeable to semi-permeable material as the material used for the container 11 (11a, 11b), it is possible to suppress water leakage to the surroundings. Further, by using the material used for the container 11 (11a, 11b) as a highly weather resistant material containing a weather resistant agent, it can be used for a long period of time. Further, by using a reflective material such as white as the material used for the container 11 (11a, 11b), not only the temperature rise due to light absorption can be suppressed, but also when multi-stage cultivation, light scattering causes the lower container 11b direction. It can also be expected to illuminate the area.

The inside of the container 11 (11a, 11b) functions as a soil holding portion 111 for holding the soil S. As the soil S held in the soil holding section 111, soil that can be used for general wasabi cultivation can be used.

In this technique, it is preferable to have a structure in which soils having different particle sizes are laminated in multiple layers. For example, a plurality of (for example, three) stone layers (each layer, for example, about 50 mm) having different average particle sizes are formed in multiple stages above and below, and the average particle size increases from the upper layer to the lower layer. Can be formed as follows. More specifically, as the uppermost soil-growing stone, a soil-growing stone with a diameter of about 3 mm or less is used, and as the intermediate-layer soil-growing stone, a soil-growing stone with a diameter of about 10 mm or less is used. As the soil-growing stone in the lowest layer, a soil-growing stone having a diameter of about 20 mm or more can be adopted.

Gravel and soil may be mixed with each stone layer as needed. For example, in addition to the soil-growing stone, gravel and soil can be appropriately mixed in the uppermost layer for planting wasabi seedlings for the purpose of imparting appropriate water retention.

Sawa wasabi seedlings are not shown, but the roots are planted so that they are immersed in the soil S. The variety of wasabi is not particularly limited, and can be, for example, a true wife, and the type of seedling is not particularly limited, and can be a melikron seedling, a split seedling, a seedling, a sprout seedling, or the like.

The container 11 (11a, 11b) includes a cultivated water discharge unit 112 for discharging cultivated water. As in the first embodiment shown in FIG. 1, the Sawa wasabi cultivation system 1 according to the present technology is provided with a permeation water discharge unit 1121 for discharging the cultivation water that has permeated the inside of the soil as the cultivation water discharge unit 112. However, as in the second embodiment shown in FIG. 2, as the cultivation water discharge unit 112, the permeation water discharge unit 1121 that discharges the cultivation water that has permeated the inside of the soil and the cultivation water on the soil surface are discharged. It is also possible to provide a surface water discharge unit 1122.

By providing the surface water discharge unit 1122, for example, as will be described later, when water is supplied in an amount exceeding the amount of cultivation water that permeates the inside of the soil, the overflowing cultivation water is discharged to the outside of the container 11. can do.

The form and number of the cultivated water discharge unit 112 are not particularly limited, and can be freely designed according to the purpose. For example, the permeated water discharge unit 1121 that discharges the cultivated water that has permeated the inside of the soil is not limited to the form in which one discharge hole is provided on the bottom surface of the container 11 as in the first embodiment shown in FIG. As in the second embodiment shown in FIG. 2, a plurality of discharge holes may be provided on the bottom surface of the container 11. Further, for example, as the surface water discharge unit 1122 for discharging the cultivated water on the soil surface, a plurality of discharge holes can be provided on the side surface of the container 11. The form of the discharge hole is not particularly limited, and the form can be designed by freely combining a circular shape, an elliptical shape, a polygonal shape, and the like. Further, as in the second embodiment shown in FIG. 2, by designing the central portion of the bottom surface of the container 11 to be recessed in the upward direction, the cultivated water can be drained smoothly without blocking the seepage water discharge portion 1121. be able to.

The number of wasabi seedlings to be planted in each container 11 (11a, 11b) is not particularly limited, and a plurality of seedlings can be planted. It is preferable to plant wasabi seedlings one by one. By planting wasabi seedlings one by one in each container 11 (11a, 11b), it is possible to suppress the interference between the seedlings and prevent the slowdown of growth due to the contact of the roots. It can promote the growth of wasabi.

(2) Water pipe 12
The cultivated water discharged from the cultivated water discharge unit 112 of the upper container 11a is guided to the container 11b of the next stage through the water pipe 12. The end 121 on the container 11b side of the next stage of the water pipe 12 is arranged near the soil S surface of the container 11b of the next stage. That is, the cultivated water discharged from the water pipe 12 is supplied to the root of the wasabi planted in the container 11b in the next stage.

Sawa wasabi releases a growth-inhibiting component from the roots so that other plants do not lose nutrients, but if this growth-inhibiting component accumulates at the root, there is a problem that it also inhibits its own growth. On the other hand, in the Sawa wasabi cultivation system 1 according to the present technique, the cultivated water discharged from the water pipe 12 is supplied to the root of the Sawa wasabi planted in the container 11b of the next stage, so that the next stage. The growth-inhibiting component at the root of wasabi planted in the container 11b can be intensively washed away, and the growth of wasabi can be promoted.

In addition, if water droplets adhere to the leaves of wasabi, there is a problem that the leaves are burnt due to the lens effect. On the other hand, in the Sawa wasabi cultivation system 1 according to the present technology, the cultivated water discharged from the water pipe 12 is supplied to the root of the Sawa wasabi planted in the container 11b of the next stage, so that the next stage. It is possible to prevent the cultivation water from adhering to the leaves of the wasabi planted in the container 11b and prevent the leaf burning, and as a result, the growth of the wasabi can be promoted.

Further, in the Sawa wasabi cultivation system 1 according to the present technique, the cultivated water discharged from the upper container 11a can be guided to the lower container 11b, and the cultivated water can be continuously used, so that the cultivated water can be efficiently used. While using it, you can efficiently cultivate wasabi.

In addition, the wasabi cultivation system 1 according to this technique can be cultivated on a flat field and does not require the creation of wasabi fields, so that it is possible to reduce the equipment cost.

As the material used for the water pipe 12, a material used for a hose or the like that can be used for general plant cultivation can be used as long as the effect of this technique is not impaired. In the present technique, it is preferable to select a water-impermeable material as the material used for the water pipe 12, and a translucent material from the viewpoint of daylighting in the lower stage.

FIG. 3 is a schematic diagram schematically showing a third embodiment of the wasabi cultivation system 1 according to the present invention, and is a schematic perspective view viewed from above. The water pipe 12 can be provided with a water guide position adjusting mechanism. For example, as shown in FIGS. 3A to 3C, the water conduction position can be adjusted by providing a length adjusting mechanism for adjusting the length of the water pipe 12. Further, as shown in FIGS. 3D and E, for example, the water guiding position can be adjusted by providing an angle adjusting mechanism for adjusting the angle of the water guiding pipe 12.

For example, watering a sprout may hinder the growth of the sprout, but watering the rhizome below the sprout can prevent the temperature of the rhizome or the whole wasabi from rising, for example. , It is possible to prevent rot in a high temperature environment such as summer.

In this technique, by equipping the water pipe 12 with a water guide position adjustment mechanism, it is possible to adjust the water guide position according to the growth of the wasabi and the water guide position according to the shape of the wasabi. It is possible to prevent rot and the like in a high temperature environment without hindering growth.

(3) Cultivated water consolidation section 13
FIG. 4 is a side view schematic view of the fourth embodiment of the wasabi cultivation system 1 according to the present technique as viewed from the side surface. The swamp wasabi cultivation system 1 according to the present technology can be provided with a cultivation water collecting unit 13 for collecting the cultivation water discharged from the seepage water discharge unit 1121 and the surface water discharge unit 1122. In this case, the water pipe 12 can be continuously provided in the cultivated water collecting unit 13.

By connecting the water pipe 12 to the cultivated water collecting section 13, the cultivated water discharged from the seepage water discharge section 1121 and the cultivated water discharged from the surface water discharging section 1122 are collected and collected without omission. Water can be guided to the container 11 of the stage, and the cultivation water can be used efficiently.

The form of the cultivated water collecting unit 13 can be freely designed as long as the cultivated water discharged from the seepage water discharge unit 1121 and the surface water discharge unit 1122 can be collected. Not limited to the dish-shaped form shown in FIG. 4, for example, although not shown, a hose or the like may be directly connected to the permeated water discharge unit 1121 and the surface water discharge unit 1122, and the hose may be used as the above-mentioned water pipe 12. Is also possible.

FIG. 5 is a schematic diagram schematically showing a fifth embodiment of the wasabi cultivation system 1 according to the present invention, and is a schematic perspective view viewed from above. The cultivation water collecting unit 13 can be provided with a dew condensation prevention mechanism 131 and / or a dew condensation water discharge mechanism 132.

In the Sawa wasabi cultivation system 1 according to this technique, since Sawa wasabi is cultivated while flowing the cultivated water, the temperature inside the container 11 and the cultivated water collecting unit 13 may be lower than the dew point. Therefore, dew condensation may occur on the outer wall surface of the container 11 and the cultivation water collecting portion 13. If the dew condensation generated in the upper row is applied to the sprout of wasabi in the lower row, it may hinder the growth of the sprout. In addition, if the dew condensation generated in the upper row is applied to the leaves of wasabi in the lower row, the leaves may be burnt due to the lens effect.

In the present technology, for example, as shown in FIG. 5A, a dew condensation prevention mechanism 131 such as a heat insulating spacer having an air layer or the like is arranged under the cultivation water collecting section 13, or as shown in FIG. 5B, the cultivation water collecting section. By designing the bottom surface of 13 to be raised in a funnel shape and providing a dew condensation water discharge mechanism 132 that guides dew condensation water to the water pipe 12, it is possible to prevent leaf burning without hindering the growth of sprouts.

(4) Sprinkler section 14
FIG. 6 is a schematic diagram schematically showing a sixth embodiment of the wasabi cultivation system 1 according to the present technique. FIG. 6A is a schematic perspective view seen from above, and FIG. 6B is a schematic perspective view seen from below. The wasabi cultivation system 1 according to the present technique may be provided with a sprinkling unit 14 for sprinkling cultivation water into the uppermost container 11a. For example, water can be taken from a water source such as a well or a water tank by a water pump or the like, and the cultivated water can be sprinkled from the sprinkling section 14 to the uppermost container 11a.

The diameter of the sprinkling hole 141 for sprinkling is not particularly limited as long as the effect of this technique is not impaired, and can be freely designed according to the amount of sprinkling and the like. In the present technique, the sprinkler hole 141 preferably has a diameter of 0.5 mm or more, and more preferably 1.0 mm or more in diameter. By making the sprinkler hole 141 having a diameter of 0.5 mm or more, clogging can be prevented. Further, if the amount of water is increased in order to obtain a desired amount of water, the water sprinkled from the sprinkler hole 141 may become too strong and the soil S may be dug up. Therefore, it is possible to prevent the soil S from being dug up.

If the sprinkler hole 141 is too large, it may be difficult to reach the plant depending on the amount of water sprinkled, or even if an attempt is made to adjust the amount of water to a desired level, the inside of the sprinkler portion 14 is not sufficiently filled with water. In some cases, uniform watering may not be possible with 141. Therefore, in the present technique, the watering hole 141 for watering is preferably 5.0 mm or less in diameter, and more preferably 3.0 mm or less in diameter.

Although the number of sprinkler holes 141 used for one Sawa wasabi strain is not shown, it is possible to provide a plurality of sprinkler holes 141. By setting the number of sprinkling holes 141 used for one Sawa wasabi strain to a plurality, it is possible to suppress the risk of poor growth due to poor sprinkling when clogging. It was

When the number of sprinkler holes 141 used for one Sawa wasabi strain is multiple, the distance between the sprinkler holes 141 used for one Sawa wasabi strain can be freely set as long as the effect of this technique is not impaired. There is no problem with the distance between the sprinkler holes 141 used for one Sawa wasabi strain as long as it fits in the container, but if the spacing is too close, the soil will be easily dug up, and if the spacing is too far, the stock will be rooted. For example, it can be 0.5 to 10 cm, preferably 1.0 to 5 cm, because it is separated from the above.

FIG. 7 is a schematic diagram schematically showing a seventh embodiment of the wasabi cultivation system 1 according to the present technique. A is a schematic perspective view seen from above, and B is a schematic perspective view seen from below. The sprinkling section 14 of the wasabi cultivation system 1 according to the seventh embodiment includes a sprinkling pipe 142 for sprinkling water near the soil surface of the uppermost container 11a.

By providing the sprinkler section 14 with a sprinkler pipe 142, water can be sprinkled near the soil surface of the uppermost container 11a. By sprinkling water near the soil surface of the uppermost container 11a, the growth-inhibiting component at the root can be intensively washed away without hindering the growth of the sprout of wasabi planted in the uppermost container 11a. It can promote the growth of wasabi. In addition, it is possible to prevent the cultivation water from adhering to the leaves of the wasabi planted in the uppermost container 11a and prevent the leaf burning, and as a result, it is possible to promote the growth of the wasabi.

FIG. 8 is a schematic diagram schematically showing an eighth embodiment of the wasabi cultivation system 1 according to the present invention, and is a schematic perspective view viewed from above. The sprinkler pipe 142 may be provided with a sprinkler position adjusting mechanism. For example, as shown in FIGS. 8A to 8C, the sprinkling position can be adjusted by providing a length adjusting mechanism for adjusting the length of the sprinkler pipe 142. Further, although not shown, the sprinkling position can be adjusted by providing an angle adjusting mechanism for adjusting the angle of the sprinkler pipe 142 (see the water guiding position adjusting mechanism of the water guiding pipe 12 shown in FIGS. 3D and E).

In this technology, by equipping the sprinkler pipe 142 with a sprinkling position adjustment mechanism, it is possible to adjust the sprinkling position according to the growth of the wasabi and the sprinkling position according to the form of the wasabi. It is possible to prevent rot and the like in a high temperature environment without hindering growth.

The cultivated water from the sprinkler unit 14 may be sprinkled intermittently, but it is also possible to sprinkle the cultivated water continuously. By continuously sprinkling the cultivated water from the sprinkler portion 14, the permeation of the cultivated water into the soil is also continuous, so that it is possible to prevent the growth-inhibiting component at the root of the wasabi from staying. As a result, the growth of wasabi can be promoted.

By controlling the amount of cultivated water sprinkled from the sprinkling unit 14, the amount of cultivated water on the soil surface can be adjusted. For example, if the cultivation water is sprinkled in an amount exceeding the amount of the cultivation water that permeates the soil, the soil surface of the container 11 will be filled with the cultivation water. By filling the soil surface with cultivation water, it is possible to prevent the adhesion of dirt on the wasabi field surface, prevent the temperature of the soil surface from rising, and improve the cultivation environment. As a result, the rhizome of wasabi with good color development can be efficiently cultivated.

The amount of cultivated water sprinkled is not particularly limited as long as the effect of this technique is not impaired. Sawa wasabi may grow poorly, and excessive watering will only flow out the surface of the soil S and is not efficient. If the flow velocity increases further, the soil S will be scraped and the growth will be affected. In some cases. The amount of cultivated water sprinkled in this technique is preferably 25 to 1500 mL / min, more preferably 50 to 500 mL / min.

As the cultivated water used by the Sawa wasabi cultivation system 1 according to this technique, it is preferable to use water that is almost sterile, such as groundwater, because if Sawa water is used, it may cause diseases derived from bacteria. In addition, as for the water quality of the cultivation water, if the acidity is too strong, it is easy to get sick, and if the alkalinity is too strong, it is easy to cause growth failure. preferable. As for the water temperature of the cultivation water, if the water temperature is too low, the growth will stop, and if the water temperature is too high, it will lead to putrefaction, etc. Therefore, the water temperature of 13 ° C ± 5 ° C is preferable, and the water temperature of 13 ° C ± 2 ° C is more preferable. ..

Further, as the cultivation water used for the wasabi cultivation system 1 according to this technique, it is also possible to use water in which microbubbles or nanobubbles containing oxygen are dissolved or a nutrient solution in which the contained components are adjusted. With the optimized amount of dissolved oxygen and nutrients, it is possible to promote the growth of wasabi.

In the wasabi cultivation system 1 according to this technique, the sprinkler unit 14 is not essential, and an external hose or water pipe can be used.

FIG. 9 is a schematic diagram schematically showing a ninth embodiment of the wasabi cultivation system 1 according to the present technique. The number of containers 11 (11a, 11b) arranged in one stage of the wasabi cultivation system 1 according to the present technique is not particularly limited, and for example, as in the ninth embodiment shown in FIG. 9, the containers 11 (11a, 11b) are arranged. ) Can be arranged in two or more in each stage. Further, the number of stages of the containers 11 (11a, 11b) in the wasabi cultivation system 1 according to the present technique is not particularly limited, and it is not shown that the number of stages is three or more as in the ninth embodiment shown in FIG. It is also possible to have four or more steps. By arranging multiple containers 11 (11a, 11b) in multiple stages and cultivating wasabi three-dimensionally, the number of plants planted per unit area can be increased, and water can be used efficiently. However, it is possible to efficiently cultivate wasabi with reduced equipment costs.

The growth range of leaves, stems, and rhizomes varies depending on the variety, but since it is within a radius of 50 to 600 mm from the root of the plant, it is preferable to arrange the containers 11 (11a, 11b) in consideration of the distance. If the interval is too narrow, the leaves of the plants will overlap, and sufficient photosynthesis will not be possible, which may contribute to poor growth. Specifically, when two or more containers 11 (11a, 11b) are arranged in each stage, the distance between the wasabi strains is preferably 100 to 400 mm, more preferably 150 to 300 mm.

Further, the distance between the upper container 11a and the lower container 11b can be appropriately designed according to the variety of wasabi and the like. If the distance between the upper container 11a and the lower container 11b is too short, the growth space of leaves, stems, and rhizomes may be blocked, resulting in poor growth. Also, when using sunlight, it may not be possible to shine enough light on the leaves. If the distance between the upper container 11a and the lower container 11b is too long, the uppermost container is cultivated at a considerably high position, which makes environmental control difficult and makes it difficult for workers to handle. Specifically, the distance from the preparation surface of the lower container 11b to the bottom surface of the upper container 11a is preferably 150 to 1000 mm, preferably 250 to 750 mm.

A shelf or the like can be used for arranging the containers 11 (11a, 11b), but from the viewpoint of drainage and daylighting, it is preferable to use a shelf board in a form such as a grid that allows water or light to pass through. ..

(5) Cultivated water reuse department 15
FIG. 10 is a schematic diagram schematically showing a tenth embodiment of the wasabi cultivation system 1 according to the present technique. The wasabi cultivation system 1 according to the present technology can be provided with a cultivation water reuse unit 15 that sends the cultivation water discharged from the cultivation water discharge unit 112 of the lowermost container 11c to another cultivation system. By providing the cultivated water recycling unit 15, the cultivated water can be efficiently used and the amount of cultivated water used can be suppressed.

The cultivated water sent from the cultivated water reuse unit 15 can be cultivated in other wasabi and reused in the stem, or can be reused in the cultivation system of other plants.

The cultivated water reuse unit 15 can be provided with a filtering function for removing foreign substances, dust, etc., in addition to a pump function for sending cultivated water to another cultivation system.

The wasabi cultivation system 1 related to this technique described above can be installed in a facility such as a plant factory, an agricultural house, or a tunnel. By surpassing the rain and wind, poor growth can be suppressed. It is also possible to grow wasabi efficiently by using sunlight or artificial light whose illuminance has been adjusted with a shading net, etc., alone or in combination, and adjusting the amount of light to the optimum amount. ..

2. 2. Sawa wasabi cultivation method The Sawa wasabi cultivation method according to this technology is discharged from the cultivation water supply step of supplying cultivation water to the uppermost container and the cultivation water discharge part of the upper container using the cultivation system described above. It is a method of carrying out a water conveyance step of guiding the cultivated water to the vicinity of the soil surface of the container in the next stage and a cultivated water discharge step of discharging the cultivated water from the cultivated water discharge portion of the container in the lowermost stage. Further, if necessary, it is also possible to carry out a cultivation water re-use step of sending the cultivation water discharged from the cultivation water discharge portion of the lowermost container to another cultivation system. Since the details of each process are the same as the functions performed by each part of the wasabi cultivation system according to the present technique, the description thereof is omitted here.

Hereinafter, the present invention will be described in more detail based on Examples.
It should be noted that the examples described below show an example of a typical example of the present invention, and the scope of the present invention is not narrowly interpreted by this.

<Example>
Soil is made by stacking gravel, gravel, and coarse sand in this order from the bottom in the container, and the soil is washed with a sufficient amount of cultivated water. Wasabi seedlings were planted up to the root of the plant. A metal rack was installed with three shelves at a height of 600 mm, 1200 mm, and 1800 mm above the floor, a sprinkler pipe was installed on the top, and a gutter was installed on the floor below the bottom. The saucers with nipples and hoses were placed on each shelf and the containers in which the seedlings were planted were placed on the saucers. A pot was placed directly on the gutter installed at the bottom of the bottom. The amount of water conducted from the water pump was adjusted so that water was sprinkled from each sprinkler hole at 250 mL / min, and the position was adjusted together with the sprinkler part (sprinkling pipe, hose) so that water was sprinkled around the plant root.

<Comparative Example 1>
Soil is prepared in the same order as in the examples in a 4m wide x 8m long cultivation tank that imitates the cultivation method of wasabi, which is generally called a stone pavement type, and is cultivated using a sufficient amount of cultivation water. After washing, wasabi seedlings were planted up to the root of the plant on the soil after washing. Groundwater was continuously introduced from the upper part of the cultivation tank at a water volume of 250 L / min by a water pump.

<Comparative Example 2>
Soil is prepared in the same order as in the example in the cultivation tank, and the soil is washed with a sufficient amount of cultivation water. So, I planted Sawa wasabi seedlings up to the root of the plant. Water was sprinkled at 250 mL / min from the sprinkler hole.

<Test results>
FIG. 11 shows a drawing-substituting photograph of wasabi grown by the cultivation system shown in the example, and FIG. 12 shows a drawing-substituting photograph of wasabi grown by the cultivation system shown in Comparative Example 1. In the examples, there was no uneven growth and the growth was good as compared with Comparative Example 1, and as compared with Comparative Example 2, the number of planted plants per unit area increased significantly even in view of the passage, and water per plant was used. It was found that the amount of wasabi used was also suppressed, and efficient wasabi cultivation was possible.

1: Sawa

wasabi cultivation system

11, 11a, 11b: Container 111: Soil holding part 112: Cultivated water discharge part 1121: Permeated water discharge part 1122: Surface water discharge part 12: Water pipe 13: Cultivated water collecting part 131: Condensation Prevention mechanism 132: Condensation water discharge mechanism 14: Sprinkler part 141: Sprinkler hole 142: Sprinkler pipe 15: Cultivated water reuse part S: Soil

Claims

It is a system for cultivating wasabi in two or more stages.
A plurality of containers having a soil holding section for holding soil and a cultivating water discharging section for discharging cultivated water, and at least one arranged in each stage.
It has a water pipe that guides the cultivated water discharged from the cultivated water discharge portion of the upper container to the next container.
A wasabi cultivation system in which the end of the water pipe on the container side of the next stage is arranged near the soil surface of the container of the next stage.
As the cultivated water discharge part,
The permeated water discharge part that discharges the cultivated water that has permeated the inside of the soil,
The surface water discharge part that discharges the cultivation water on the soil surface,
The wasabi cultivation system according to claim 1.
It has a cultivated water collecting part that collects the cultivated water discharged from the seepage water discharging part and the surface water discharging part.
The wasabi cultivation system according to claim 2, wherein the water pipe is continuously provided in the cultivation water collecting section.
The swamp wasabi cultivation system according to claim 3, wherein the cultivated water collecting unit has a dew condensation prevention mechanism and / or a dew condensation water discharge mechanism.
The wasabi cultivation system according to any one of claims 1 to 4, wherein two or more of the above containers are arranged in each stage.
The wasabi cultivation system according to any one of claims 1 to 5, which has a sprinkling unit for sprinkling water on the uppermost container.
The wasabi cultivation system according to claim 6, wherein the sprinkling section has a sprinkling pipe for sprinkling water near the soil surface of the uppermost container.
The wasabi cultivation system according to claim 7, wherein the sprinkler pipe has a sprinkling position adjusting mechanism.
The wasabi cultivation system according to any one of claims 1 to 8, which has a cultivation water reuse unit that sends the cultivation water discharged from the cultivation water discharge unit of the lowermost container to another cultivation system.
The wasabi cultivation system according to any one of claims 1 to 9, wherein one seedling of wasabi is planted in each container.
The wasabi cultivation system according to any one of claims 1 to 10, wherein the water pipe has a water conduction position adjusting mechanism.
It is a method for cultivating wasabi in two or more stages.
A plurality of containers having a soil holding section for holding soil and a cultivating water discharging section for discharging cultivated water, and at least one arranged in each stage.
It has a water pipe that guides the cultivated water discharged from the cultivated water discharge portion of the upper container to the next container.
Using a wasabi cultivation system in which the end of the water pipe on the container side of the next stage was arranged near the soil surface of the container of the next stage,
The cultivation water supply process for supplying cultivation water to the uppermost container,
A water conveyance process that guides the cultivated water discharged from the cultivated water discharge section of the upper container to the vicinity of the soil surface of the next container.
Cultivation water discharge process for discharging cultivated water from the cultivated water discharge part of the bottom container,
Wasabi cultivation method.