WO2016059746A1 - Hydroponic device and hydroponic method - Google Patents

Abstract

A hydroponic device (100) equipped with: a cultivation tank (3) for cultivating a plant (1); a cultivation medium (2) that has flexibility and liquid retention properties and guides the elongation of an underground part (1a) toward a direction crossing the vertical direction; and a supporting part (10) that is disposed in the cultivation tank (3) and supports the cultivation medium (2) so as to maintain the state where the elongation of the underground part 1a is guided along the direction crossing the vertical direction.

Description

Hydroponics apparatus and hydroponics method

The present invention relates to a hydroponic cultivation apparatus and a hydroponic cultivation method for growing a plant without using soil.

Development of so-called hydroponic cultivation equipment is being promoted that cultivates plants without using soil but with the roots immersed in water. In the conventional hydroponic cultivation apparatus, nutrients are given to the plant in a state where the plant is supported so that the above-ground part and the underground part extend along the vertical direction. According to this conventional hydroponic cultivation apparatus, the height of the cultivation space is increased according to the length of the underground part and the above-ground part. Therefore, the cultivation method which arrange | positions a plant is considered so that an underground part may extend along a horizontal direction so that an underground part may extend along the direction which cross | intersects a perpendicular direction in cultivation space. The following patent documents 1 and 2 are the technical documents related to the method of arranging plants so that the underground part extends along the horizontal direction.

Japanese Patent Laid-Open No. 9-9807 JP 2008-253218 A

When a plant is arranged in the cultivation space in a state where the above-described underground part extends along the direction intersecting the vertical direction, particularly in a state where the underground part extends in the horizontal direction, the deformation caused by flexion is caused by the underground of the plant. It occurs in the part. If a large deformation occurs in the underground part of the plant, the commercial value of the plant is reduced.

The present invention has been made in view of the above problems. The purpose of the present invention is hydroponic cultivation that can suppress deformation caused by flexion that occurs in the underground part of the plant when the plant is cultivated in a state where the underground part extends along the direction intersecting the vertical direction. Is to provide a device. Moreover, it is providing such a hydroponics method.

The hydroponic cultivation apparatus of the present invention has a cultivation tank for cultivating plants, a medium having flexibility and liquid retention, and guiding the extension of the underground portion along the direction intersecting the vertical direction, And a support portion that supports the culture medium so that the state in which the extension of the underground portion is guided along the direction intersecting the vertical direction is maintained in the cultivation tank.

According to said structure, when growing a plant in the state extended along the direction which cross | intersects a perpendicular direction, the deformation | transformation resulting from the terrestrial property which arises in the underground part of a plant can be suppressed.

It is a longitudinal cross-sectional view of the hydroponic cultivation apparatus of the 1st example of embodiment of this invention, Comprising: It is a figure when seeing a plant along the direction perpendicular | vertical with respect to the direction where the underground part of a plant is extended. It is a longitudinal cross-sectional view of the hydroponic cultivation apparatus of the 1st example of embodiment of this invention, Comprising: It is a figure when a plant is seen along the direction where the underground part of a plant is extended. It is a perspective view when the internal space of the hydroponic cultivation apparatus of the 1st example of embodiment of this invention is seen. It is a figure which shows the hydroponic cultivation apparatus with which the some cultivation space shown by FIG. 1 was piled up. It is a figure which shows the hydroponic cultivation apparatus with which the some cultivation space shown by FIG. 2 was piled up. It is a perspective view when the internal space of the hydroponic cultivation apparatus of the 2nd example of embodiment of this invention is seen. It is a figure for demonstrating the support part of the 1st example of the hydroponic cultivation apparatus of embodiment of this invention, Comprising: It is a figure which shows the state before increasing the number of support parts. It is a figure for demonstrating the support part of the 1st example of the hydroponic cultivation apparatus of embodiment of this invention, Comprising: It is a figure which shows the state after increasing the number of support parts. It is a figure for demonstrating the support part of the 2nd example of the hydroponic cultivation apparatus of embodiment of this invention, Comprising: It is a figure which shows the state before the shape of a support part changes. It is a figure for demonstrating the support part of the 2nd example of the hydroponic cultivation apparatus of embodiment of this invention, Comprising: It is a figure which shows the state after the shape of a support part changed. It is a figure for demonstrating the support part of the 3rd example of the hydroponic cultivation apparatus of embodiment of this invention, Comprising: It is a figure when seeing a plant along the direction where the underground part of a plant is extended. It is a top view for demonstrating the support part of the 3rd example of the hydroponic cultivation apparatus of embodiment of this invention. It is a top view for demonstrating the support part of the 4th example of the hydroponic cultivation apparatus of embodiment of this invention. It is a longitudinal cross-sectional view of the hydroponic cultivation apparatus of the 3rd example of embodiment of this invention, Comprising: It is a figure when seeing a plant along the direction perpendicular | vertical with respect to the direction where the underground part of a plant is extended. It is a longitudinal cross-sectional view of the hydroponic cultivation apparatus of the 4th example of embodiment of this invention, Comprising: It is a figure when seeing a plant along the direction perpendicular | vertical with respect to the direction where the underground part of a plant is extended. It is a longitudinal cross-sectional view of the hydroponic cultivation apparatus of the 4th example of embodiment of this invention, Comprising: It is a figure when seeing a plant along the direction where the underground part of a plant is extended. In the hydroponic cultivation apparatus of embodiment of this invention, it is a top view which shows the state by which the plant was arrange | positioned on the support part at the matrix form. It is a longitudinal cross-sectional view of the hydroponic cultivation apparatus of the 5th example of embodiment of this invention, Comprising: It is a figure when seeing a plant along the direction perpendicular | vertical with respect to the direction where the underground part of a plant is extended. It is a longitudinal cross-sectional view of the hydroponic cultivation apparatus of the 5th example of embodiment of this invention, Comprising: It is a figure when seeing a plant along the direction where the underground part of a plant is extended. It is a longitudinal cross-sectional view of the hydroponic cultivation apparatus of the 6th example of embodiment of this invention, Comprising: It is a figure when seeing a plant along the direction perpendicular | vertical with respect to the direction where the underground part of a plant is extended. It is a longitudinal cross-sectional view of the hydroponic cultivation apparatus of the 6th example of embodiment of this invention, Comprising: It is a figure when seeing a plant along the direction where the underground part of a plant is extended. It is a longitudinal cross-sectional view of the hydroponic cultivation apparatus of the 7th example of embodiment of this invention, Comprising: It is a figure when seeing a plant along the direction perpendicular | vertical with respect to the direction where the underground part of a plant is extended. It is a longitudinal cross-sectional view of the hydroponic cultivation apparatus of the 7th example of embodiment of this invention, Comprising: It is a figure when seeing a plant along the direction where the underground part of a plant is extended. It is a perspective view for demonstrating the state which the culture medium of the other example which can be used in the hydroponic cultivation apparatus of embodiment of this invention supports a plant. It is a perspective view for demonstrating the state which the culture medium of the further another example which can be used in the hydroponic cultivation apparatus of embodiment of this invention supports a plant. It is a perspective view for demonstrating the state which the culture medium of the further another example which can be used in the hydroponic cultivation apparatus of embodiment of this invention supports a plant.

Hereinafter, a hydroponic cultivation apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings.

The reference numerals given in the drawings are parts that perform the same function in the hydroponic cultivation apparatus of each embodiment. Therefore, when the structure to which the reference sign is attached in the description of each drawing is not described, the other described functions are applied to the function of the member to which the reference sign is not described.

(Examples of plants cultivated by hydroponics equipment)
The plant 1 cultivated by the hydroponic cultivation apparatus 100 of the present embodiment is a root vegetable whose underground part extends along the direction in which gravity acts in general soil cultivation. An example of root vegetables is ginseng (Ginseng or Ginseng). Panax ginseng is a plant in which, when the underground part is arranged along the horizontal direction, the problem of deformation of the underground part due to the above-mentioned bending property occurs remarkably.

(Overall structure of hydroponic cultivation equipment)
The overall structure of the hydroponic cultivation apparatus 100 according to the embodiment of the present invention will be described with reference to FIGS.

1 and 2, the hydroponic cultivation apparatus 100 includes a cultivation tank 3, a ceiling part, a tubular medium 2, a support part 10, and a light irradiation part 5. The ceiling part can be removed from the cultivation tank 3 so as to function as a lid part of the cultivation tank 3.

As shown in FIG. 1 and FIG. 2, the hydroponic cultivation apparatus 100 includes a cultivation tank 3, a floor portion 30, four side wall portions, and a ceiling portion, and constitutes a hexahedral structure casing. Yes. The cultivation tank 3 includes a cultivation space 13 for cultivating the plant 1. The cultivation tank 3 includes a storage tank unit 31 that stores water or nutrient solution 4 supplied to the plant 1. The storage tank portion 31 is configured by the lower end portions of the three side wall portions, the edge portion 3b, and the floor portion 30. In the present embodiment, the plant 1 is supported by the support unit 10 in a state where the underground part 1a is inserted into the tubular culture medium 2 above the water or nutrient solution 4 stored in the storage tank unit 31. Has been.

As shown in FIG. 1 and FIG. 2, the cylindrical culture medium 2 has flexibility and liquid retention (water retention). Therefore, the cylindrical culture medium 2 can hold water or nutrient solution 4 necessary for the growth of the plant 1. Moreover, the cylindrical culture medium 2 can be deform | transformed flexibly according to the growth of the underground part 1a of the plant 1, contacting the underground part 1a. The cylindrical culture medium 2 is not limited to a cylindrical shape having a circular cross section and a rectangular tube having a polygonal cross section. Moreover, the cylindrical culture medium 2 may be one in which a rectangular flat plate-like flexible member is rolled into a cylindrical shape and two opposing sides are fixed. In the state where the underground part 1a is inserted, the cylindrical culture medium 2 cooperates with the support part 10 and guides the extension of the underground part 1a while suppressing deformation caused by the bending property of the underground part 1a. Anything can be used. In the present embodiment, the cylindrical culture medium 2 is made of a sponge, for example, urethane foam, but may be made of a material having liquid retention and flexibility other than sponge.

The cylindrical culture medium 2 covers the peripheral surface of the underground portion 1a so that the root 1b of the plant 1 hangs down from the tip of the cylindrical culture medium 2. The cylindrical culture medium 2 is in close contact with the underground part 1a in a state containing water or nutrient solution 4. The tubular culture medium 2 protrudes from the tip of the underground part 1a so as to guide the extension of the underground part 1a of the plant 1. Therefore, the underground part 1a of the plant 1 can extend substantially straight along the direction in which the tubular medium 2 extends. Therefore, it is preferable that the position of the edge part in the direction where the underground part 1a of the cylindrical culture medium 2 extends is a position where the underground part 1a does not protrude from the cylindrical culture medium 2 in the state where the underground part 1a is the largest. .

However, if the tubular medium 2 is too long, the root 1b of the plant 1 cannot extend outward from the tubular medium 2. In this case, the root 1b is unlikely to contact the water or the nutrient solution 4. Therefore, the length of the tubular medium 2 is preferably such that the root 1b of the plant 1 can protrude from the tubular medium 2. Moreover, when the water or nutrient solution 4 is stored in the reservoir 31, it is more preferable that the root 1 b of the plant 1 is in contact with the water or nutrient solution 4.

The cylindrical culture medium 2 may be anything as long as it prevents the underground portion 1a from bending due to its flexibility. It is preferable that the cylindrical culture medium 2 is not bent to such an extent that the commercial value of the underground portion 1a is lowered. More preferably, the tubular culture medium 2 is recognized to guide the underground portion 1a along a certain direction to the extent that a general consumer feels that it extends substantially along a straight line.

As shown in FIGS. 1 and 2, the hydroponic cultivation apparatus 100 includes a drainage flow path 3a constituted by an edge 3b and one side wall. When the height of the water or nutrient solution 4 stored in the storage tank 31 exceeds the height of the edge 3b, the water or nutrient solution 4 is discharged downward from the drainage flow path 3a.

In the present embodiment, the support 10 has a high height where the root 1b of the plant 1 is immersed in water or the nutrient solution 4 but the cylindrical culture medium 2 does not contact the water or nutrient solution 4 stored in the reservoir 31. At this position, the cylindrical culture medium 2 is supported. Therefore, the water or nutrient solution 4 is efficiently supplied to the plant 1, but is not excessively held in the tubular medium 2. Therefore, the growth of the plant 1 can be promoted while suppressing the decay of the plant 1.

The support part 10 is provided in the cultivation space 13, and supports the cylindrical culture medium 2 locally at two positions along the direction in which the underground part 1a extends above the water or nutrient solution 4 of the cultivation tank 3. Yes. The two positions are positions where the linear member 10a and the linear member 10b are in contact with the tubular culture medium 2, respectively. However, three or more linear members may locally support the tubular culture medium 2 at three or more positions, respectively.

In the present embodiment, the plant 1 is arranged in the cultivation space 13 with the underground portion 1a extending in the horizontal direction. The cylindrical culture medium 2 guides the extension of the underground part 1a along the horizontal direction. Moreover, the support part 10 is supporting the cylindrical culture medium 2 so that the cylindrical culture medium 2 may extend along a horizontal direction, in order to extend the underground part 1a along a horizontal direction. Therefore, it is suppressed that the deformation | transformation resulting from refractory nature arises in the underground part 1a of the plant 1. FIG.

Further, the support part 10 locally supports the tubular medium 2 at two or more positions along the direction in which the underground part 1a extends. That is, the support unit 10 supports the cylindrical culture medium 2 at a plurality of dispersed locations so that the water or nutrient solution 4 around the cylindrical culture medium 2 is dropped toward the storage tank unit 31. . Therefore, it is suppressed that the underground part 1a will rot because the cylindrical culture medium 2 hold | maintains water or the nutrient solution 4 excessively.

The guide part 16a and the guide part 16b are each attached to the two side wall parts which the cultivation tank 3 mutually opposes. The guide part 16a and the guide part 16b are provided so as to extend parallel to each other along a horizontal plane. A runner portion 15a and a runner portion 15b are inserted into the guide portion 16a and the guide portion 16b, respectively. The runner part 15a and the runner part 15b can slide along the direction in which the guide part 16a and the guide part 16b extend without detaching from the guide part 16a and the guide part 16b, respectively.

The linear member 10a has runner portions 15a and 15b at both ends thereof. The linear member 10b also has runner portions 15a and 15b at both ends thereof. Therefore, the linear member 10a and the linear member 10b can each move independently along the horizontal plane while maintaining a state parallel to each other. Therefore, the distance between the linear member 10a and the linear member 10b can be changed according to the extension degree of the underground part 1a.

According to the structure of the support portion 10 described above, the plant 1 can be cultivated in the cultivation space 13 with the underground portion 1a extending in the horizontal direction. Therefore, the height of the cultivation space 13 can be reduced.

As shown in FIGS. 1 and 2, the light irradiation unit 5 is provided above the tubular medium 2, that is, above the plant 1 so that the above-ground part 1 c of the plant 1 extends upward. Yes. Specifically, the light irradiation part 5 is provided on the lower surface of the ceiling part of the cultivation tank 3 toward the floor 30 of the cultivation tank 3. Therefore, the light irradiation part 5 irradiates light to the plant 1 from the upper side to the lower side. Therefore, although not shown in FIGS. 1 to 5, a plurality of underground parts 1a can be arranged along the direction in which the underground part 1a extends. Therefore, it becomes possible to arrange a plurality of underground parts 1a in a matrix (see FIG. 17) in plan view. The matrix-like arrangement of the underground part 1a will be described later. In the present embodiment, the light irradiation unit 5 is a light source that emits its own light, such as an LED (Light Emitting Diode) or a fluorescent lamp. However, the light irradiation unit 5 may be a light guide unit that guides light from the outside to the inside of the hydroponic cultivation apparatus so that light or sunlight emitted from another light source is irradiated to the plant 1.

As can be seen from FIGS. 1 to 3, the support portion 10 has a shape for fixing the positions of the plurality of plants 1 so that the plurality of underground portions 1a extend in parallel with each other. Specifically, as can be seen from FIGS. 2 and 3, positioning portions 11a, 11b, 11c, 11d, and 11e are attached to the linear member 10a, and positioning portions 12a, 12b, 12c, 12d, and the like are attached to the linear member 10b. 12e is attached. The positioning portions 11a, 11b, 11c, 11d, and 11e and the positioning portions 12a, 12b, 12c, 12d, and 12e are hook-like members fixed to the linear member 10a and the linear member 10b, respectively. According to such a configuration, it is easy to arrange a plurality of underground parts 1a in rows at appropriate intervals along a direction perpendicular to the direction in which the underground part 1a extends. Moreover, the several underground part 1a can be maintained in a mutually parallel state. Therefore, it is easy to make effective use of the cultivation space 13.

As can be seen from FIGS. 1 and 3, the support portion 10 has a shape that does not inhibit the root 1 b from drooping from one end of the cylindrical culture medium 2 so as to be immersed in water or the nutrient solution 4. Moreover, the support part 10 has a shape which does not inhibit the above-ground part 1c extending upward from the other end of the cylindrical culture medium 2. Moreover, the support part 10 has the shape which does not inhibit the edge parts by the side of the ground part 1c of the underground part 1a adjacent to each other in the horizontal direction perpendicular | vertical to the direction where the underground part 1a extends mutually. . Therefore, the distance between the adjacent ground portions 1c in the horizontal direction perpendicular to the direction in which the underground portion 1a extends can be increased. Therefore, the ground part 1c can be efficiently irradiated with light.

4 and 5, in the hydroponic cultivation apparatus 100 of the present embodiment, a plurality of cultivation spaces 13 may be stacked in the vertical direction. According to this, the cultivation number of the plant 1 can be increased, without increasing the occupation area of the hydroponic cultivation apparatus 100 in planar view.

(Whole structure of hydroponic cultivation apparatus of another example)
As FIG. 6 shows, the hydroponic cultivation apparatus 100 of another example is made into the plant 1 instead of the storage tank part 31 comprised by the lower end part of three side wall parts, the edge part 3b, and the floor part 30. As shown in FIG. You may provide the spraying part 6 which sprays mist-like water or the nutrient solution 4. FIG. Also in this case, the cylindrical culture medium 2 covers the periphery of the underground portion 1a of the plant 1 so that the root 1b of the plant 1 hangs down from the tip of the cylindrical culture medium 2. However, the support part 10 supports the cylindrical culture medium 2 at a height position at which the cylindrical culture medium 2 does not contact the water or the nutrient solution 4 accumulated in the storage tank part 31. According to this configuration, it is possible to maintain an appropriate wet state of the tubular culture medium 2 while supplying water or the nutrient solution 4 to the root 1 b of the plant 1.

In the hydroponic cultivation apparatus 100 of the present embodiment, as shown in FIG. 6, the linear member 10a does not have the positioning portions 11a, 11b, 11c, 11d, and 11e, and the linear member 10b is the positioning portion. 12a, 12b, 12c, 12d, and 12e may not be provided.

The hydroponics apparatus may include both the spray unit 6 shown in FIG. 6 and the storage tank unit 31 shown in FIGS. 1 to 3. According to this, both supply of the water or nutrient solution 4 of the root 1b and spraying of the water or nutrient solution 4 to the cylindrical culture medium 2 can be performed efficiently. However, in this case, since the water or nutrient solution 4 is stored in the storage tank 31, the position where the spray unit 6 is installed is preferably the inner surface of the side wall.

(Support part)
Next, the detailed structure of the support part 10 of this Embodiment is demonstrated.

Since the cylindrical culture medium 2 has flexibility, when the underground part 1a is deformed due to the bending property, there is a possibility that it is elastically deformed accordingly. Therefore, the support part 10 is provided so as to suppress the elastic deformation of the cylindrical culture medium 2 that occurs when the underground part 1a is deformed due to the ground bending property. Therefore, the support part 10 can suppress the deformation | transformation resulting from the bending of the underground part 1a in cooperation with the cylindrical culture medium 2. Each of the support portions 10 described below supports the tubular culture medium 2 in such a manner that the tubular culture medium 2 assists the function of suppressing the deformation caused by the bending property of the underground portion 1a.

Further, all of the support portions 10 shown below locally support the tubular medium 2 at a plurality of dispersed locations. Therefore, the support part 10 can drop the water or the nutrient solution 4 around the cylindrical culture medium 2 toward the bottom surface. Therefore, it is suppressed that the underground part 1a will rot due to excess water being hold | maintained at the cylindrical culture medium 2. FIG.

As shown in FIGS. 1 to 6, the first example of the support portion 10 includes two linear members 10a and 10b that support the tubular culture medium 2 and extend in parallel to each other. It is out. The two linear members 10a and 10b are provided at the same height and extend along a horizontal plane. According to the support portion 10, the plant 1 can be supported with an extremely simple structure so that the underground portion 1a extends in the horizontal direction. However, the support part 10 is comprised by the 3 or more linear member which is provided in the same height position according to the magnitude | size of the underground part 1a of the plant 1, and the cylindrical culture medium 2, and is mutually extended in parallel. May be. The support of the cylindrical culture medium 2 is more stable when the number of linear members is larger. Further, instead of the linear members 10a and 10b, rod-like members or elongated plate-like members may be used. As long as the support part 10 is a member extended in two or more linear forms which can support the cylindrical culture medium 2 locally, the thickness, width | variety, or thickness may be what.

As shown in FIGS. 7 to 12, the support unit 10 can change at least one of the number, shape, and position of the members constituting the support unit 10 in accordance with the extension of the underground part 1a. It is configured to be possible.

7 and 8 can increase the number of members constituting the support portion 10 as the underground portion 1a extends. As shown in FIG. 7, when the length of the underground part 1a is relatively small, the tubular culture medium 2 is supported by the support part 10 including the two linear members 10a and 10b. On the other hand, as shown in FIG. 8, when the length of the underground part 1a becomes relatively large, the tubular culture medium 2 is provided at the same height, and the three linear members 10a extending along the horizontal plane. , 10b, 10c. That is, the linear member 10c is used in addition to the linear members 10a and 10b. According to this, it is suppressed that support of the cylindrical culture medium 2 by the support part 10 resulting from the expansion | extension of the underground part 1a becomes unstable.

7 and 8, the tubular medium 2 having the same size is continuously used even when the underground portion 1a extends, but the size depends on the degree of extension of the underground portion 1a. A cylindrical culture medium 2 having a different size may be used.

9 and 10, the shape of the support portion 10 may be changed according to the extension of the underground portion 1a. 9 and 10, the support part 10 has a vertical frame 10d having an L-shaped corner part and a linear horizontal frame 10g. As shown in FIGS. 9 and 10, a rectangular frame structure is formed by the vertical frame 10d and the horizontal frame 10g in a plan view. A mesh member 10f is stretched inside the rectangular frame structure. Both ends of the plurality of strings constituting the mesh member 10f are fixed to the vertical frame 10d or the horizontal frame 10g. The crossing portions of the plurality of strings constituting the mesh member 10f are not fixed to each other, and the vertical string and the horizontal string can move relative to each other.

9 and 10 includes leg portions (not shown) that extend in the vertical direction from the lower surfaces of the four L-shaped corner portions of the vertical frame 10d. The four legs are installed on the bottom surface. Thereby, the vertical frame 10d and the horizontal frame 10g are arranged in parallel to the horizontal plane.

9 and 10, the positioning portions 11a, 11b, 11c, 11d, and 11e and the positioning portions 12a, 12b, 12c, 12d, and 12e are configured by hooks provided on the vertical frame 10d. Therefore, a plurality of cylindrical culture media 2 can be arranged at appropriate intervals.

As can be seen by comparing FIG. 9 and FIG. 10, the width of the support portion 10 is increased along the direction in which the underground portion 1 a of the plant 1 extends. Specifically, the vertical frame 10d and the horizontal frame 10g are nested, and the vertical frame 10d can move relative to the horizontal frame 10g along the direction in which the horizontal frame 10g extends. It has become. The string portion constituting the mesh member 10f is wound around the positioning portions 11a, 11b, 11c, 11d, and 11e of the vertical frame 10d by a take-up reel. Therefore, when the horizontal string constituting the mesh member 10f is pulled, the take-up reel rotates in the reverse direction to come out of the vertical frame 10d. When the take-up reel rotates forward, the horizontal string is taken up by the take-up reel. Accordingly, the mesh member 10f can change the mesh shape by the relative movement of the vertical string and the horizontal string.

As shown in FIGS. 9 and 10, the support portion 10 whose shape changes also prevents the support of the tubular medium 2 by the support portion 10 from becoming unstable due to the extension of the underground portion 1a. Is done.

9 and 10, a handle 10e is provided on the horizontal frame 10g. Therefore, the support part 10 can be easily attached to the cultivation tank 3 by grasping the two handle parts 10e with both hands.

When the mesh member or the lattice member as described above is used as the support portion 10, the water or nutrient solution 4 around the tubular culture medium 2 does not collect on the support portion 10 and moves toward the storage tank portion 31. Fall. In addition, when the change of the shape of the support part 10 is not required, the support part 10 which has a mesh-like or lattice-like member may be comprised with the mesh-like member which consists of stainless steel, a plastics, or a tree | wood.

As shown in FIGS. 11 and 12, the support portion 10 may include two linear members 10a and 10b and four column portions 10j, 10k, 10l, and 10m that can move. The column portions 10j, 10k, 10l, and 10m are all installed on the bottom surface of the cultivation tank 3. Both ends of the linear member 10a are attached to the movable column portions 10j and 10k, respectively. Moreover, the both ends of the linear member 10b are attached to 10 m and 10 l, respectively. Therefore, as can be seen from FIG. 11 and FIG. 12, the position of any one of the set of column portions 10j and 10k and the set of column portions 10m and 10l can be changed. Therefore, the space | interval of the linear member 10a which comprises the support part 10, and the linear member 10b can be changed. Also by this, the position of linear member 10a, 10b which comprises the support part 10 can be changed according to the expansion | extension of the underground part 1a. Therefore, it becomes possible to prevent the support of the tubular culture medium 2 by the support part 10 from becoming unstable due to the extension of the underground part 1a.

11 and 12, the positioning portions 11a, 11b, 11c, and 11d and the positioning portions 12a, 12b, 12c, and 12d are configured by linear members 10a and hook-shaped members that are fixed to the linear members 10b, respectively. ing. Therefore, a plurality of cylindrical culture media 2 can be arranged at appropriate intervals.

As shown in FIG. 13, the support portion 10 may be a perforated member 10u provided with a plurality of through holes 10h and having a flat plate shape. The perforated member 10u is installed in the cultivation space 13 in parallel to the horizontal plane. The height of the perforated member 10u is the same as the height of the linear members 10a and 10b described above. As for the perforated member 10u, the upper surface of the perforated member 10u is inclined toward each of the plurality of through holes 10h so that water or water or nutrient solution 4 around the cylindrical culture medium 2 does not accumulate on the support portion 10. It is desirable that

According to the above-described perforated member 10u, the support portion 10 can be easily manufactured. Examples of the perforated member 10u include punching metal or perforated plastic.

A plurality of ridges 11j, 11k, and 11l projecting upward are provided on the upper surface of the perforated member 10u. The ridge is a portion whose cross section extends on a straight line having a convex shape. The plurality of ridges 11j, 11k, and 11l extend in parallel with each other. Moreover, the some cylindrical culture medium 2 is arrange | positioned between the some protruding item | line 11j, 11k, 11l. Therefore, a plurality of cylindrical culture media 2 can be arranged between the ridges 11j, 11k, and 11l so as to extend in parallel with each other. Moreover, the some cylindrical culture medium 2 can be arrange | positioned at an appropriate space | interval.

The support portion 10 is one of the support portions 10 shown in FIGS. 7 to 13 described above according to the extension of the underground portion 1a, among the support portions 10 shown in FIGS. 7 to 13 described above. You may replace | exchange for the other support part 10. FIG. This also suppresses the unstable support of the tubular medium 2 by the support 10 due to the extension of the underground part 1a.

(Other examples of light illumination unit)
As shown in FIGS. 14 and 15, the light irradiation unit 5 is provided on the side of the tubular culture medium 2 so that the above-ground part 1 c of the plant 1 extends in a direction opposite to the extending direction of the underground part 1 a. It may be done. That is, the light irradiation part 5 may be provided on the side of the plant 1 on the ground part 1c side. Specifically, the light irradiation part 5 is attached on the inner side surface of the side wall part of the cultivation tank 3. However, as long as the light irradiation part 5 is provided in the side of the ground part 1c, the light irradiation part 5 may be attached to what. For example, the light irradiation part 5 may be supported by the member extended from the floor part 30, and may be located in the side of the ground part 1c.

According to the above configuration, both the above-ground part 1c and the underground part 1a extend along the horizontal plane. Therefore, the height of the cultivation space 13 of the plant 1 can be further reduced.

In FIG. 14, since the spraying part 6 is installed on the bottom surface, the drainage channel 3a is constituted by a hole provided so as to penetrate the floor part 30. On the other hand, in FIG. 15, since the water or nutrient solution 4 is stored in the storage tank 31, the drainage channel 3 a is configured by a groove formed by the edge 3 b and the side wall of the cultivation tank 3. Yes.

(Hanging from the ceiling of the support part)
When the light irradiation part 5 is provided on the side of the ground part 1c, as shown in FIGS. 15 and 16, the support part 10 is U-shaped and has a plurality of meshes or lattices each having flexibility. The member 10n may be included. In this case, each of the plurality of mesh-like or lattice-like members 10n is suspended from the ceiling portion. The U-shaped mesh-like or lattice-like member 10n may be a belt-like mesh-like or lattice-like member having a predetermined hardness and formed into a U-shape. In this case, the floor portion 30 supports the U-shaped mesh-shaped or lattice-shaped member 10n. The plurality of mesh-like or lattice-like members 10n support the plurality of cylindrical culture media 2 at the same height so that the underground portions 1a of the plurality of plants 1 extend along the horizontal plane. In addition, the plurality of mesh-like or lattice-like members 10n support the plurality of cylindrical culture media 2 so that the plurality of cylindrical culture media 2 extend in parallel to each other. Therefore, the plurality of underground portions 1a also extend in parallel with each other. In this case, the plurality of mesh-like or lattice-like members 10n support the plurality of cylindrical culture media 2 in a one-to-one manner so as to fix the positions of the plurality of cylindrical culture media 2 respectively. .

The above-described mesh-like or lattice-like member 10n also assists the function of the tubular culture medium 2 suppressing the deformation of the underground part 1a, like the support part 10 described above. The plurality of mesh-like or lattice-like members 10n described above also locally support the tubular culture medium 2 at a plurality of dispersed locations. Therefore, the support part 10 shown by FIG. 15 and FIG. 16 also drops the water or nutrient solution 4 around the cylindrical culture medium 2 toward the storage tank part 31.

(Plant matrix arrangement)
As shown in FIG. 17, the support part group 110 may include a plurality of support parts 10 arranged at intervals along the direction in which the underground part 1 a of the plant 1 extends. The plurality of support portions 10 each have a plurality of cylindrical shapes such that the underground portions 1a of two or more plants 1 form a line along a horizontal direction perpendicular to the direction in which the underground portion 1a of the plant 1 extends. The medium 2 is supported. Therefore, as can be seen from FIG. 17, a plurality of cylindrical culture media 2 are arranged in parallel to each other along the horizontal plane. In addition, in two adjacent cylindrical culture media 2 arranged in parallel to each other, a plurality of plants 1 are arranged so that the ends of the underground portion 1a on the ground portion 1c side of the plant 1 are opposite to each other. Has been. According to this, in the plan view, the distance between the adjacent ground portions 1c can be increased. Therefore, a plurality of plants 1 can efficiently perform photosynthesis.

In the example shown in FIG. 17, each support portion 10 is constituted by two linear members 10a and 10b. However, the mesh-like or lattice-like member 10n having flexibility shown in FIGS. 15 and 16 may be attached to the ceiling portion of the cultivation tank 3 in a matrix shape. According to these support parts 10, the planar space in the cultivation tank 3 can be utilized effectively by arrange | positioning the underground part 1a of the plant 1 in matrix form.
(Other examples of medium)
As shown in FIGS. 18 to 26, instead of the medium 2 described above, mediums 2a, 2b, 2c, 2f, and 2g described below may be used. The culture mediums 2a, 2b, 2c, 2f, and 2g have the same configuration as the above-described culture medium 2 except for the points described below.
As shown in FIGS. 18 and 19, a medium 2 a may be used instead of the medium 2 described above. The culture medium 2a has a so-called half pipe shape in which a cylindrical pipe is cut along the axial direction. Therefore, the culture medium 2a has an arc whose cross section perpendicular to the axial direction forms an arc of 180 °, and has a holding surface 2a1 extending along the horizontal flat direction. The holding surface 2a1 is in close contact with the underground portion 1a and constitutes a groove that holds the underground portion 1a. In this case, the groove has a curved surface along the outer peripheral surface of the underground portion 1a.
As shown in FIGS. 20 and 21, the medium 2 b may be used instead of the medium 2 described above. The culture medium 2b has a shape in which a slit is provided in a cylindrical pipe along the axial direction. Therefore, the culture medium 2b has an arc whose cross section perpendicular to the axial direction forms an arc with a larger angle than a 180 ° arc, and has a holding surface 2b1 extending along the horizontal direction. The holding surface 2b1 is in close contact with the underground portion 1b and constitutes a groove that holds the underground portion 1a. Also in this case, the groove has a curved surface along the outer peripheral surface of the underground portion 1a. The culture medium 2b receives the underground part 1a when the slit is expanded and encloses the underground part 1a when the slit is narrowed. The culture medium 2b may be configured such that the slit is closed in a state in which the underground part 1a is not received.
Even when the above-described cylindrical culture medium 2 is used, the lower inner surface of the cylindrical culture medium constitutes a holding surface for holding the underground portion 1a, and the holding surface is in close contact with the underground portion 1a. The groove which holds the underground part 1a is comprised. Also in this case, the groove has a curved surface along the outer peripheral surface of the underground portion 1a.
As shown in FIG. 22 and FIG. 23, a medium 2c may be used instead of the medium 2 described above. The culture medium 2c has a holding surface 2c1 in which the cross section is wavy, specifically, a sine curve. The holding surface 2c1 is in close contact with the underground portion 1b and constitutes a groove that holds the underground portion 1a. Also in this case, the groove has a curved surface along the outer peripheral surface of the underground portion 1a.
However, the holding surface 2c1 does not have to be a curved surface. If the holding surface 2c1 includes a plurality of concave portions that respectively receive the plurality of underground portions 1a and a plurality of convex portions that form a partition between the plurality of concave portions, the shape of the projections and depressions. May be anything. In this case, the recess constitutes a groove as a holding surface.
Instead of the medium 2 described above, a medium in which the grooves described above are formed by a holding surface that draws an arc having a cross section of 180 ° on the main surface of the rectangular parallelepiped may be used. In other words, the holding surface is in close contact with the underground portion 1a and forms a groove that holds the underground portion 1a. Also in this case, the groove has a curved surface along the outer peripheral surface of the underground portion 1a. However, the holding surface may not be a curved surface, and may be a groove constituted by three side surfaces of the four side surfaces of the rectangular parallelepiped. Moreover, instead of the above-mentioned culture medium 2, the above-mentioned groove | channel may use the culture medium comprised by the holding surface which consists of two side surfaces among the three side surfaces of a triangular prism.
As shown in FIG. 24, a medium 2f may be used instead of the medium 2 described above. The culture medium 2f has a groove extending along the direction in which the underground portion 1a extends. The groove has a holding surface 2f1 extending along a direction intersecting the vertical direction. The holding surface 2f1 extends from one end 2f11 to the other end 2f12. In other words, the holding surface 2f1 is in close contact with the underground portion 1a and forms a groove for holding the underground portion 1a. Also in this case, the groove has a curved surface along the outer peripheral surface of the underground portion 1a.
When the culture medium 2f is installed on the support portion 10, the one end 2f1 is higher than the other end 2f12. Therefore, when the culture medium 2f holds the underground part 1a,
The underground part 1a is inclined with respect to the vertical direction and is inclined with respect to the horizontal plane.
In FIG. 24, when looking at the adjacent culture medium 2f along the direction in which the support portions 10a and 10b extend, the positive and negative gradients of the two holding surfaces 2f1 are opposite to each other. In this case, the underground part 1a is installed in the culture medium 2f so that the end of the underground part 1a on the ground part 1c side protrudes from the position above the holding surface 2f1. Thereby, in the relationship between the adjacent culture media 2f, the end portions on the ground portion 1c side of the underground portion 1a are not adjacent to each other. That is, the plurality of plants 1 are arranged so that the ends of the underground portion 1a on the ground portion 1c side of the plant 1 are opposite to each other. In this case, the illumination unit 5 may be installed on either the side surface or the ceiling surface depending on the direction in which the ground portion 1c extends.
As shown in FIGS. 25 and 26, a medium 2g may be used instead of the cylindrical medium 2 described above. The culture medium 2g has a shape in which a cut is formed in a rectangular parallelepiped, and has a holding surface 2g1 composed of two opposing surfaces formed by the cut. When the underground part 1a is pushed into the cut, the cut is opened. The underground part 1a is inserted into the cut. As a result, the underground part 1a contacts the holding surface 2g1 and is supported by the holding surface 2g1. The holding surface 2g1 is in close contact with the underground portion 1a and constitutes a groove that holds the underground portion 1a. Also in this case, the groove has a curved surface along the outer peripheral surface of the underground portion 1a.
As can be seen from the above, the culture media 2, 2a, 2b, 2c, 2f, and 2g all guide the extension of the underground portion 1a in the direction intersecting the vertical direction. Moreover, the support part 10 supports the culture medium 2, 2a, 2b, 2c, 2f, 2g so that the state of the culture medium 2, 2a, 2b, 2c, 2f, 2g is maintained. The medium may be any other medium as long as it guides the extension of the underground portion 1a in a direction crossing the vertical direction.
The intersection angle between the direction intersecting the vertical direction and the vertical direction may be any angle as long as it is larger than 0 °. However, from the viewpoint of reducing the height of the cultivation space 13, it is 90 ° as much as possible. It is desirable to be close. In particular, it is preferable that the aforementioned crossing angle is determined so that the underground part 1a extends substantially along the horizontal direction. For example, the crossing angle at which the underground portion 1a extends substantially along the horizontal direction may be a value from 85 degrees to 90 degrees.
Moreover, the plant 1 does not fall from the culture medium 2, 2a, 2b, 2c, 2f, 2g by the frictional force generated between the culture medium 2, 2a, 2b, 2c, 2f, 2g and the underground part 1a. It is desirable to be retained. Therefore, also from this viewpoint, it is preferable that the above-mentioned crossing angle is as close to 90 ° as possible. However, if the surface roughness value of the medium is large, the aforementioned crossing angle may be a value larger than 45 degrees and smaller than 90 degrees, for example. When the crossing angle is greater than 0 ° and less than 45 °, the culture medium is provided with a support member that supports the underground portion 1a so as to prevent the underground portion 1a from falling from the culture medium. It may be done.
The support unit 10 may be any other member that supports the medium so that the state of the medium is maintained.
Even in the above case, the support unit 10 suppresses elastic deformation of the culture media 2, 2 a, 2 b, 2 c, 2 f, and 2 g based on the deformation of the underground part 1 a due to the refractory nature of the plant 1. The support part 10 is a position that suppresses elastic deformation of the culture mediums 2, 2a, 2b, 2c, 2f, 2g based on the deformation of the underground part 1a due to flexion, and the culture media 2, 2a, 2b, 2c, 2f, 2 g is supported from below.
However, depending on the size, thickness, elastic modulus, etc., of the culture media 2, 2a, 2b, 2c, 2f, 2g, the culture media 2, 2a, 2b, 2c, 2f, 2g itself may be inferior to the underground part 1a. It is also possible to suppress the resulting deformation.

(Advantages of the hydroponic cultivation apparatus of the embodiment)
According to the hydroponic cultivation apparatus 100 of the present embodiment described above, the underground portion 1a of the plant 1 is arranged so as to extend along the direction intersecting the vertical direction. Therefore, the height of the cultivation space 13 can be reduced. In particular, when the underground part 1a of the plant 1 is arranged so as to extend in the horizontal direction, the height of the cultivation space 13 is set in consideration of only the length of the ground part 1c regardless of the length of the underground part 1a. Can be determined. As a result, the height of the cultivation space 13 depending on the length of the underground part 1a and the above-ground part 1c of the plant 1 is reduced. Therefore, even when hydroponics is performed in a space in a plant factory having a limited height, a large number of cultivation spaces 13 can be stacked. Thereby, the space in the plant factory can be used more efficiently. Therefore, the yield per unit area can be increased.

Hereinafter, the characteristic configuration of the hydroponic cultivation apparatus 100 of the embodiment and the effects obtained thereby will be described.

(1) The hydroponic cultivation apparatus 100 includes a cultivation tank 3 for cultivating the plant 1. The hydroponic cultivation apparatus 100 has culture media 2, 2a, 2b, 2c, 2f, and 2g that have flexibility and liquid retention and guide the extension of the underground portion 1a along the direction intersecting the vertical direction. . The hydroponic cultivation apparatus 100 is disposed in the cultivation tank 3, and the culture mediums 2, 2a, 2b, 2c, and so on are maintained so that the extension of the underground portion 1a is guided along the direction intersecting the vertical direction. The support part 10 which supports 2f and 2g is provided.

According to said structure, culture medium 2,2a, 2b, 2c, 2f, 2g guides the expansion | extension of the underground part 1a, suppressing the deformation | transformation of the underground part 1a resulting from a terrestrial bending property. The support part 10 assists the function in which the culture media 2, 2 a, 2 b, 2 c, 2 f, 2 g suppress the deformation of the underground part 1 a. As a result, it is possible to reduce the deformation caused by the territoriality generated in the underground part 1a of the plant 1 by the culture mediums 2, 2a, 2b, 2c, 2f, 2g and the support part 10. Therefore, it becomes possible to cultivate the plant 1 in the state where the underground portion 1a extends in the direction intersecting the vertical direction in the cultivation space 13. Therefore, the height of the cultivation space 13 can be reduced.
(2) The culture media 2, 2a, 2b, 2c, 2f, and 2g may have holding surfaces 2a1, 2b1, 2c1, 2f1, and 2g1 that contact the underground portion 1a and hold the underground portion 1a. The holding surfaces 2a1, 2b1, 2c1, 2f1, and 2g1 may constitute a groove that extends along a direction that intersects the vertical direction.
According to said structure, since the underground part 1a expand | extends along holding surface 2a1, 2b1, 2c1, 2f1, 2g1, it can guide the extension direction of the underground part 1a easily.
(3) The groove has a curved surface along the outer peripheral surface of the underground portion 1a. According to this configuration, the holding surfaces 2a1, 2b1, 2c1, 2f1, and 2g1 can be brought into close contact with the outer peripheral surface of the underground portion 1a as much as possible. Therefore, water or nutrient solution 4 can be efficiently supplied to the underground part 1a.
(4) The support part 10 supports the culture medium from the lower side at a position that suppresses elastic deformation of the culture mediums 2, 2a, 2b, 2c, 2f, and 2g based on deformation of the underground part 1a due to flexion. May be.
According to said structure, even when culture medium 2,2a, 2b, 2c, 2f, 2g consists of a material which elastically deforms greatly, a deformation | transformation of the underground part 1a resulting from ground bending property can be suppressed.

(5) It is preferable that the support part 10 supports the culture media 2, 2a, 2b, 2c, 2f, and 2g at a plurality of dispersed locations. According to this, the decay of the plant 1 resulting from the accumulation of water or nutrient solution 4 around the culture media 2, 2a, 2b, 2c, 2f, 2g can be suppressed.

(6) The support portion 10 may be configured to change at least one of the number, shape, and position of the members constituting the support portion 10 in accordance with the extension of the underground portion 1a. According to this, it becomes possible to prevent the support of the culture mediums 2, 2a, 2b, 2c, 2f, 2g by the support part 10 from becoming unstable due to the extension of the underground part 1a.

(7) The support unit 10 may include two or more linear members 10a, 10b, and 10c that support the culture media 2, 2a, 2b, 2c, 2f, and 2g and extend in parallel with each other. . According to this, the water or nutrient solution 4 around the culture medium 2 falls. Therefore, it can suppress that the underground part 1a of the plant 1 decays | causes that the culture medium 2, 2a, 2b, 2c, 2f, 2g hold | maintains water or the nutrient solution 4 excessively. . Instead of the linear members 10a, 10b, 10c, rod-like members or elongated plate-like members may be used.

(8) The support portion 10 may include a mesh-like or lattice-like member 10n. Also for this reason, for the same reason as described above, the underground portion 1a of the plant 1 has been spoiled due to excessive retention of water or nutrient solution 4 in the culture media 2, 2a, 2b, 2c, 2f, 2g. Can be suppressed.

(9) The support portion 10 may include a perforated member 10u provided with a plurality of through holes 10h. Also for this reason, for the same reason as described above, the underground portion 1a of the plant 1 has been spoiled due to excessive retention of water or nutrient solution 4 in the culture media 2, 2a, 2b, 2c, 2f, 2g. Can be suppressed.

(10) It is preferable that the support part 10 has a shape for fixing the positions of the plurality of plants 1 such that the plurality of underground parts 1a extend in parallel with each other. According to this, since it becomes easy to arrange and arrange a plurality of plants 1, it becomes easy to aim at effective use of space.

(11) The hydroponic cultivation apparatus 100 may include a light irradiation unit 5 that irradiates the plant 1 with light. The light irradiation part 5 may be provided above the culture media 2, 2a, 2b, 2c, 2f, 2g.

According to said structure, the above-ground part 1c of the plant 1 can be extended toward upper direction. Therefore, a plurality of underground parts 1a can be arranged along the direction in which the underground part 1a extends. Therefore, it becomes possible to arrange | position the several underground part 1a in matrix form in planar view.

(12) The hydroponic cultivation apparatus 100 may include a light irradiation unit 5 that irradiates the plant 1 with light. The light irradiation part 5 may be provided in the side of the culture media 2, 2a, 2b, 2c, 2f, 2g. According to this, the above-ground part 1c of the plant 1 can be extended in the direction opposite to the extending direction of the underground part 1a. More specifically, not only the underground part 1a but also the ground part 1a can extend sideways. Therefore, in addition to reducing the height of the underground part 1a, the height of the ground part 1c can also be reduced, so that the height of the cultivation space 13 can be further reduced.

(13) The cultivation tank 3 may include a storage tank unit 31 for storing water or nutrient solution 4. According to this, the root 1b of the plant 1 hanging down from the culture medium 2, 2a, 2b, 2c, 2f, 2g can be immersed in the water or the nutrient solution 4.

(14) The cultivation tank 3 may include a spray unit 6 for spraying mist-like water or nutrient solution 4. According to this, mist-like water or nutrient solution 4 can be sprayed on the culture medium 2, 2a, 2b, 2c, 2f, 2g.

(15) The direction intersecting the vertical direction is preferably the horizontal direction. According to this, the height of the hydroponic cultivation apparatus 100 can be made as low as possible.
(16) The hydroponic cultivation method used by the hydroponic cultivation apparatus 100 described above includes a plurality of plants 1 such that the ends of the underground portions 1a on the ground portion 1c side of the adjacent plants 1 are opposite to each other. Place.

According to said method, the distance of the adjacent ground parts 1c can be enlarged in planar view. Therefore, a plurality of plants 1 can efficiently perform photosynthesis.
In addition, this application claims priority based on Japanese Patent Application No. 2014-212627 filed on October 16, 2014, and uses all the contents described in the Japanese application. .

DESCRIPTION OF SYMBOLS 1 Plant 1a Underground part 1b Root 2, 2a, 2b, 2c, 2f, 2g Medium 2a1, 2b1, 2c1, 2f1, 2g1 Holding surface 3 Cultivation tank 4 Water or nutrient solution 5 Light irradiation part 6 Spraying part 10 Supporting part 10a, 10b, 10c Linear member 10f, 10n Mesh-like or lattice-like member 10i, 10u Perforated member 13 Cultivation space 31 Reservoir unit 100 Hydroponics device

Claims (16)

1. A cultivation tank for cultivating plants,
   A medium having flexibility and liquid retention, and guiding the extension of the underground portion along the direction intersecting the vertical direction;
   Hydroponics provided with a support portion that is arranged in the cultivation tank and supports the culture medium so that the extension of the underground portion is guided along the direction intersecting the vertical direction. Cultivation equipment.
2. The culture medium has a holding surface that contacts the basement and holds the basement,
   The hydroponic cultivation apparatus according to claim 1, wherein the holding surface constitutes a groove extending along a direction intersecting the vertical direction.
3. The hydroponic cultivation apparatus according to claim 2, wherein the groove has a curved surface along an outer peripheral surface of the underground portion.
4. The water according to any one of claims 1 to 3, wherein the support portion supports the culture medium from below at a position that suppresses elastic deformation of the culture medium based on deformation of the underground portion due to flexion. Tillage cultivation equipment.
5. The hydroponic cultivation apparatus according to any one of claims 1 to 4, wherein the support unit supports the medium at a plurality of dispersed positions.
6. The support portion according to claim 1, wherein the support portion is configured to change at least one of the number, shape, and position of members constituting the support portion according to the extension of the underground portion. The hydroponic cultivation apparatus in any one.
7. The hydroponic according to any one of claims 1 to 6, wherein the support section includes two or more linear, rod-shaped, or elongated plate-shaped members each supporting the culture medium and extending in parallel with each other. Cultivation equipment.
8. The hydroponic cultivation apparatus according to any one of claims 1 to 6, wherein the support portion includes a mesh-like or lattice-like member.
9. The hydroponic cultivation apparatus according to any one of claims 1 to 6, wherein the support portion includes a perforated member provided with a plurality of through holes.
10. The hydroponic cultivation apparatus according to any one of claims 1 to 9, wherein the support portion has a shape that fixes positions of the plurality of culture media such that the plurality of culture media extend in parallel with each other.
11. A light irradiation unit for irradiating the plant with light;
    The hydroponic cultivation apparatus according to any one of claims 1 to 10, wherein the light irradiation unit is provided above the medium.
12. A light irradiation unit for irradiating the plant with light;
    The hydroponic cultivation apparatus according to any one of claims 1 to 11, wherein the light irradiation unit is provided on a side of the culture medium.
13. The hydroponic cultivation apparatus according to any one of claims 1 to 12, wherein the cultivation tank includes a storage tank section for storing water or nutrient solution.
14. The hydroponic cultivation apparatus according to any one of claims 1 to 13, wherein the cultivation tank further includes a spraying unit that sprays mist-like water or nutrient solution.
15. The hydroponic cultivation apparatus according to any one of claims 1 to 14, wherein a direction intersecting the vertical direction is a horizontal direction.
16. A hydroponic cultivation method using the hydroponic cultivation apparatus according to any one of claims 1 to 15,
    The hydroponic cultivation method which arrange | positions the said some plant so that the edge parts of the said underground part by the side of the above-ground part of the said plant which adjoin each other may mutually reverse.

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