WO2017047001A1

WO2017047001A1 - Hydroponic medium and hydroponic apparatus

Info

Publication number: WO2017047001A1
Application number: PCT/JP2016/003682
Authority: WO
Inventors: 宏矢野
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2015-09-14
Filing date: 2016-08-09
Publication date: 2017-03-23
Also published as: JPWO2017047001A1

Abstract

A hydroponic medium (30) for a root vegetable (1) according to the present invention is provided with: a permeable part (3); and an impermeable part (2). The permeable part (3) has a penetration section (3A) extending in one direction (L), and retains permeate water from the outside. The impermeable part (2), which is in contact with the permeable part (3) so as to cover the penetration section (3A), has a notch (2A) that is communicatively connected with the penetration section (3A) and that forms a penetration in the one direction (L), and suppresses discharging of water from the permeable part (3). The impermeable part (2) has an ability to block light to a level at which an underground part (1A) of the root vegetable (1) senses, prior to germination, that the present time is in a dark period.

Description

Hydroponic culture medium and hydroponic cultivation equipment

The present invention relates to a culture medium for hydroponics that grows plants without using soil and a hydroponic cultivation apparatus using the same.

Research on so-called hydroponics, in which plants are cultivated by immersing plant roots (underground) in water without using soil, is being promoted. In general hydroponics, the underground part of a plant is surrounded by a flexible medium such as a sponge. For example, the following Patent Document 1 discloses an example of a medium for hydroponics.

Japanese Patent No. 4365815

Regarding root vegetables, germination may adversely affect germination if the area around the part where the bud emerges is dried or if the area where the bud emerges is irradiated with intense light. That is, when germination, it is desirable that the state around the part where the bud emerges is similar to the moisture state and light state in the soil. Therefore, when root vegetables are hydroponically cultivated, in addition to the flexibility of the medium, in order to promote germination, it is necessary to manage the water condition and light condition of the area around the root vegetable roots where the buds emerge. is important. However, there is no document disclosing a technique for improving the moisture state and the light state of the portion around the bud portion of the medium.

The present invention has been proposed in view of the above situation. And the objective is to provide the culture medium and hydroponic cultivation apparatus for the hydroponics of the root vegetables which can improve the state of the water | moisture content around the part where a bud appears, and the state of light.

In order to solve the above-mentioned problem, the medium for hydroponics of root vegetables according to the first aspect of the present invention has a penetrating portion extending along one direction and retains moisture that has permeated from the outside. And a penetrating portion that is in contact with the penetrating portion so as to cover the penetrating portion, has a notch that communicates with the penetrating portion and penetrates along the one direction, and the moisture is released from the penetrating portion. A non-permeable part that suppresses this, and the non-permeable part has a light-shielding property that the underground part of root vegetables before germination feels when the current time is in the dark period.

The hydroponic cultivation apparatus according to the second aspect of the present invention partitions an underground space in which an underground portion of the root vegetable grows and an aboveground space in which the aboveground portion of the root vegetable grows, from the underground space to the above ground space. The partition part which has an opening part which penetrates is provided, The culture medium for hydroponic cultivation of the root vegetables of a 1st aspect is engage | inserted by the said opening part.

According to the culture medium for hydroponic cultivation of root vegetables of the present invention, the water state and light state around the part where the buds appear can be improved. Moreover, according to the hydroponic cultivation apparatus of this invention, germination of root vegetables can be accelerated | stimulated.

It is a disassembled perspective view of the culture medium for hydroponics of Embodiment 1 of this invention. It is a perspective view of the culture medium for hydroponics of Embodiment 1 of this invention, Comprising: It is a figure which shows the state before the root vegetables bud comes out. It is a side view of the culture medium for hydroponics of Embodiment 1 of this invention, and its surrounding fragmentary sectional drawing, Comprising: It is a figure which shows the state before the root vegetables sprout comes out. It is a perspective view of the culture medium for hydroponics of Embodiment 1 of this invention, Comprising: It is a figure which shows the state after the root vegetables sprout came out. It is a side view of the culture medium for hydroponics of Embodiment 1 of this invention, and its surrounding fragmentary sectional drawing, Comprising: It is a figure which shows the state after the root vegetables sprout came out. It is a disassembled perspective view of the modification of the culture medium for hydroponics of Embodiment 1 of this invention. It is a cross-sectional schematic diagram which shows the hydroponic cultivation apparatus of Embodiment 1 of this invention. It is a disassembled perspective view of the culture medium for hydroponics of Embodiment 2 of this invention. It is a perspective view of the culture medium for hydroponics of Embodiment 2 of this invention, Comprising: It is a figure which shows the state before the root vegetables bud comes out. It is a side view of the culture medium for hydroponics of Embodiment 2 of this invention, and its partial sectional view, Comprising: It is a figure which shows the state after the root vegetables sprout came out. It is a perspective view of the culture medium for hydroponics of Embodiment 2 of this invention, Comprising: It is a figure which shows the state after the root vegetables sprout came out. It is a side view of the culture medium for hydroponics of Embodiment 2 of this invention, and its partial sectional view, Comprising: It is a figure which shows the state after the root vegetables sprout came out. It is a disassembled perspective view of the modification of the culture medium for hydroponics of Embodiment 2 of this invention. It is a perspective view which shows the cylindrical part of the culture medium for hydroponics of Embodiment 3 of this invention. It is the culture medium for hydroponics of Embodiment 3 of this invention, and the fragmentary sectional view of the periphery.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
The culture medium 30 and the hydroponic cultivation apparatus 90 for the hydroponics of the root vegetable 1 according to the first embodiment will be described with reference to FIGS. Examples of root vegetables 1 that can use the culture medium 30 for hydroponics of the present embodiment include ginseng (ginseng or ginseng) or potato (potato). However, the root vegetables 1 cultivated by the culture medium 30 of this Embodiment is not limited to these. In the following embodiments, ginseng is cultivated using the medium 30.

As shown in FIG. 1, the culture medium 30 for hydroponics of the root vegetable 1 of the present embodiment has a permeable portion 3 that retains moisture that has permeated from the outside, and moisture is released from the permeable portion 3. The non-permeable part 2 which suppresses that is provided. In this Embodiment, the permeable part 3 is comprised with the foam material of the open cell structure. Moreover, the impermeable part 2 is comprised with the foam material of the closed cell structure. Therefore, the culture medium 30 can be made flexible and lightweight. A typical example of the material having an open cell structure is urethane foam, that is, sponge. As a material having a closed cell structure, PE (polyethylene) foam or rubber sponge is typical.

As shown in FIG. 1, the permeable portion 3 has a through portion 3 A that extends along one direction L in which the imaginary central axis of the cylinder extends, for example, in the vertical direction. In the present embodiment, the penetrating part 3A is formed by a notch penetrating the permeable part 3 along one direction L. The notch constituting the through portion 3A may have a gap. As shown in FIG. 1, the non-permeable portion 2 has a cut 2 A that communicates with the penetrating portion 3 A and penetrates along the one direction L described above. The cut 2A preferably has no gap from the viewpoint of the light shielding property described later. The permeable portion 3 has a cylindrical outer shape, and the non-permeable portion 2 has a disk-like outer shape, but the permeable portion 3 and the non-permeable portion 2 have any outer shape. It may be.

As shown in FIG. 1, the permeable portion 3 has one surface 31 that is one circular plane of the cylinder, and the other circular plane that faces the one surface 31 as the other circular plane. It has a surface 32. In addition, the permeable portion 3 has a peripheral surface 33 connected to each of the outer edge of the surface 31 on one side and the outer edge of the surface 32 on the other side.

2 and 3, the non-permeable portion 2 has a size enough to cover the entire surface 31 on one side. In the present embodiment, the impermeable portion 2 is fixed on the surface 31 on one side of the permeable portion 3 with an adhesive. Therefore, it is suppressed that light enters the permeable portion 3 from the outside through the surface 31 on one side. Moreover, it is suppressed that a water | moisture content is discharge | released outside from the permeable part 3 through the surface 31 of one side.

2 and 3 show the state of the culture medium 30 when the underground part 1A of the root vegetable 1 in a state where no buds are produced is inserted into the penetration part 3A. 3 shows the state of the culture medium 30 inserted into the opening 7A of the partition 7 that partitions the above-described ground space 91 and the underground space 92 of the hydroponic cultivation apparatus described later. As can be seen from FIG. 2 and FIG. 3, the permeable part 3 is formed according to the shape of the underground part 1A when the underground part 1A of the root vegetables 1 without buds is inserted into the penetration part 3A. Flexibility. Moreover, as FIG. 3 shows, the impermeable part 2 has block | closed the whole opening part 7A. Thereby, the impermeable part 2 has covered 3 A of penetration parts. Therefore, even if the penetration part 3A is opened by insertion of the underground part 1A, the non-permeable part 2 suppresses light from reaching the part 1C where the bud of the underground part 1A emerges from the ground space 91. .

The non-permeable part 2 of the present embodiment has a light shielding property to the extent that the underground part 1A of the root vegetable 1 before germination feels that the current time is the dark period. Therefore, the illuminance of the light irradiated to the portion 1C where the uppermost buds of the underground part 1A appear can be set to a value equal to or less than the illuminance of light that the underground part 1A of the root vegetables 1 feels in the dark period. That is, when the present time is night, a state felt by the underground part 1A before germination shown in FIGS. 2 and 3 can be formed. If the illuminance around the sprout part 1C is such that the root vegetable 1 feels that the current time is in the dark period, the light state of the sprout part 1C is the same as the light state in the soil. It becomes a state. In this case, the adverse effect resulting from the state of light does not occur in the germination of the root vegetables 1 that are hydroponically cultivated. The illuminance that the root vegetables 1 feel when the current time is in the dark period varies depending on the type of the root vegetables 1. For example, rice recognizes an illuminance situation of about 200 lux or less as a dark period, and Onamomi recognizes an illuminance situation of 10 lux or less as a dark period. When the type of root vegetable 1 to be cultivated is determined, the illuminance at which the underground portion 1A of the root vegetable 1 feels in the dark period is also determined. Therefore, for example, when it is determined that the root vegetable 1 to be cultivated is ginseng, the degree of light-shielding property of the non-permeable part 2 necessary to feel that the underground part 1A of ginseng is in the dark period is also determined. The

In the present embodiment, the light-shielding property to the extent that the root vegetables 1 feel that the current time is in the dark period is realized only by the non-permeable portion 2. In the present embodiment, the surface of the non-permeable portion 2 is colored so as to obtain a light-shielding property to the extent that the root vegetable 1 feels in the dark period. Therefore, it is possible to easily realize a desired light shielding property and diversify the choices of materials for the non-permeable portion 2. However, the light-shielding property to the extent that the root vegetables 1 feel that the current time is in the dark period may be realized by any configuration such as the thickness, material, and color of the non-permeable portion 2 or a combination thereof. .

Further, in the state shown in FIGS. 2 and 3, the non-permeable part 2 suppresses evaporation of moisture in the permeable part 3. Therefore, the state around the portion 1C where the root vegetables 1 sprout can be brought into a wet state similar to that in the soil.

As can be seen from the above, according to the culture medium 30 for hydroponics of the root vegetable 1 of the present embodiment, it is possible to improve the water condition and the light condition around the portion 1C where the root vegetable 1 buds appear. it can.

4 and 5 show the state of the culture medium 30 after the root vegetables 1 sprout. FIG. 5 shows the state of the culture medium 30 inserted into the opening 7A of the partition 7 that partitions the above-described ground space 91 and the underground space 92 of the hydroponic cultivation apparatus 90 described later. As can be seen from FIG. 4 and FIG. 5, the non-permeable part 2 has a degree of flexibility that allows the buds as the underground part 1 A to be cut and penetrate the 2 A. The shoots of the root vegetables 1 that have emerged from the bud portion 1C grow into stems as the above-ground portion 1B, penetrate the cut 2A, and reach the above-ground space 91.

As shown in FIG. 6, the penetrating part 3 A of the permeable part 3 may be a through hole instead of the penetrating notch shown in FIG. 1. Further, when the through-hole 3A is a through-hole, the shape of the through-hole is not limited to a cylindrical shape, and may be any shape such as a triangular prism shape or a quadrangular prism shape.

Further, in FIG. 1, the penetrating part 3 A was cut inward from the peripheral surface 33 of the permeable part 3 to a position connecting the central part of the surface 31 on one side and the central part of the surface 32 on the other side. It may be a thing. In this case, the notch 2A that penetrates is also cut inward from the peripheral surface of the impermeable portion 2 to a position that connects the central portion of the circular surface on one side and the central portion of the circular surface on the other side. There may be. The cut 2A is preferably as small as possible, but if the light-shielding property and moisture retention of the non-permeable part 2 to the extent that the underground part 1A feels in the dark period can be ensured, the peripheral part of the non-permeable part 2 is centered. It may be cut inward.

The notch 2A and the penetrating portion 3A that penetrate in the present embodiment are linear notches in plan view. However, both the cut 2A and the through portion 3A may be cuts of other forms such as an X-shaped cut in a plan view.

The whole outline of the hydroponic cultivation apparatus 90 in which the culture medium 30 for hydroponic cultivation of the root vegetables 1 of the present embodiment is used will be described with reference to FIG. In the present embodiment, the hydroponic cultivation apparatus means an apparatus for cultivating a plant by immersing the root of the root vegetable 1 in water.

The hydroponic cultivation apparatus 90 of the present embodiment includes a water tank 6 that is provided in the housing 100 and holds the nutrient solution 60. A nutrient solution 60 is stored in the water tank 6. The hydroponic cultivation apparatus 90 includes the illumination unit 5 above the root vegetables 1. Since the leaf as the above-ground part 1B of the root vegetables 1 protrudes upward from the culture medium 30, it can receive light from the illumination part 5 and can perform photosynthesis.

On the other hand, the fine roots as the underground part 1A of the root vegetables 1 hang down so as to be immersed in the nutrient solution 60 from the lower part of the main root. Therefore, the root vegetables 1 can absorb the nutrient solution 60 from the fine roots.

In the present embodiment, a part of the underground part 1A is surrounded by the medium 30 above the nutrient solution 60 in the water tank 6. The hydroponic cultivation apparatus 90 of the present embodiment includes a partition 7 having an opening 7A in which a culture medium 30 for hydroponic cultivation is fitted. The partition part 7 may have any shape as long as it can hold the culture medium 30 for hydroponics so as to position the root vegetables 1 above the nutrient solution 60. The partition portion 7 is preferably formed of a material such as foamed polystyrene from the viewpoint of weight reduction.

In the present embodiment, the hydroponic cultivation apparatus 90 includes the nutrient solution supply unit 10 that supplies the nutrient solution 60 to the permeable portion 3 of the culture medium 30. The nutrient solution supply unit 10 includes a spray port 20 that blows the mist-shaped nutrient solution 60 toward the underground space 92, a pipe and pump 11 that guides the nutrient solution 60 to the spray port 20, and a tank 12 that stores the nutrient solution 60. It has. In the hydroponic cultivation apparatus 90 of the present embodiment, the nutrient solution 60 in the tank 12 is supplied from the supply pipe 6 A to which the water tank 6 is attached to the water tank 6 by the drive of the pump 11, and is provided in the water tank 6. It is discharged from the discharge pipe 6C. Further, the nutrient solution 60 is blown out from the spray port 20 to the underground space 92 by driving the pump 11. The nutrient solution 60 blown out from the spray port 20 to the underground space 92 penetrates the permeable portion 3 by contacting the culture medium 30. Thereby, the wet state of the permeable part 3 is maintained, and the nutrient solution 60 is supplied to the underground part 1A of the root vegetables 1.

The hydroponic cultivation apparatus 90 of the present embodiment includes the medium 30 described above. Therefore, the moisture state and light state of the permeable portion 3 around the portion 1C where the root vegetables 1 buds are maintained in the same state as that in the soil by the non-permeable portion 2. Therefore, germination of root vegetables 1 can be promoted. Moreover, the root vegetables 1 in the state before germination and the root vegetables 1 in the state after germination can be cultivated by the same hydroponic cultivation apparatus 90.

(Embodiment 2)
The culture medium 30 for hydroponics of the root vegetable 1 according to the second embodiment will be described with reference to FIGS.

Hereinafter, differences between the medium 30 for hydroponics of the root vegetable 1 according to the present embodiment and the medium 30 for hydroponics of the root vegetable 1 according to the first embodiment will be mainly described. Except for the points described below, the medium 30 for hydroponics of the root vegetable 1 according to the present embodiment has substantially the same configuration as the medium 30 for hydroponics of the root vegetable 1 according to the first embodiment. ing.

As shown in FIG. 8, also in the culture medium 30 of the present embodiment, the permeable portion 3 has a cylindrical outer shape and extends in one direction L, as in the culture medium 30 of the first embodiment. It has a penetrating part 3A extending in the direction. However, as shown in FIG. 8, in the present embodiment, the permeable portion 3 has a disc-shaped recess 3 C on one circular surface of the columnar outer shape. The penetrating portion 3A is a cut extending from the bottom surface of the disc-shaped recess 3C to the other circular surface of the cylindrical outer shape of the permeable portion 3 facing the bottom surface. The impermeable portion 2 has a disk-like outer shape. The impermeable portion 2 has a cut 2A that communicates with the penetrating portion 3A and penetrates along the one direction L, as in the first embodiment.

FIG. 9 and FIG. 10 show the state of the culture medium 30 of the present embodiment when the underground part 1A of the root vegetable 1 in a state where no buds are produced is inserted into the penetration part 3A. In addition, FIG. 10 shows the state of the culture medium 30 of the present embodiment inserted into the opening 7A of the partition 7 that partitions the ground space 91 and the underground space 92 of the hydroponic cultivation apparatus 90 (see FIG. 7). Yes. As shown in FIG. 9 and FIG. 10, the impermeable portion 2 is fitted into the recess 3 C so that the upper surface 3 D of the protrusion adjacent to the recess 3 C becomes an exposed surface. Thereby, the impermeable part 2 is in contact with the permeable part 3 so that 3 A of penetration parts may be covered. The disc-shaped impermeable portion 2 has a diameter slightly larger than the diameter of the disc-shaped recess 3C. Therefore, the non-permeable part 2 is interference-fitted, that is, press-fitted into the recessed part 3C. Therefore, the impermeable portion 2 and the permeable portion 3 are fixed so as not to be separated from each other. However, the permeable portion 3 and the non-permeable portion 2 may be fixed by an adhesive.

FIG. 11 and FIG. 12 show the state of the medium 30 of the present embodiment after the root vegetables 1 sprout. In addition, FIG. 12 has shown the state of the culture medium 30 of this Embodiment inserted in the opening part 7A of the partition part 7 which partitions off the ground space 91 and the underground space 92 of the hydroponic cultivation apparatus 90. FIG.

Also in the present embodiment, as shown in FIG. 11 and FIG. 12, the permeable part 3 has a penetrating part 3A when the underground part 1A of the root vegetable 1 without buds is inserted into the penetrating part 3A. However, it has the softness | flexibility of the grade which spreads according to the shape of 1 A of underground parts. The non-permeable part 2 has the flexibility of the grade which the bud extended upwards from the underground part 1A cuts and penetrates 2A.

In the present embodiment, as shown in FIG. 12, when the culture medium 30 is fitted into the opening 7A of the partitioning portion 7, the upper surface 3D of the convex portion adjacent to the concave portion 3C of the permeable portion 3 is the ground space. 91 is exposed. Therefore, a certain amount of moisture in the permeable portion 3 evaporates into the ground space 91. As a result, moisture in the permeable portion 3 is retained in the permeable portion 3 for a long period of time while maintaining a wet state around the portion 1C where the root vegetables 1 buds in an appropriate state. Corruption can be prevented. Therefore, root vegetables 1 can be cultivated under a favorable environment.

Also in the present embodiment, the non-permeable part 2 has a light shielding property to the extent that the underground part 1A of the root vegetables 1 before germination feels that the current time is in the dark period. Therefore, even if light reaches the permeable portion 3 from the ground space 91 via the upper surface 3D of the convex portion, the non-permeable portion 2 is in the state of light around the portion 1C where the bud of the permeable portion 3 comes out. Can be made to feel that the underground part 1A is in the dark period. Moreover, although a part of the water | moisture content in the permeable part 3 is discharge | released to the ground space 91 via the upper surface 3D of the convex part as an exposed surface, the water | moisture content in the vicinity of the part 1C from which the bud in the permeable part 3 comes out. Is suppressed by the non-permeable part 2. Therefore, it is possible to improve the moisture state and light state around the portion 1C where the root vegetables 1 sprout in the medium 30.

As shown in FIG. 13, the penetrating part 3 A of the permeable part 3 may be a through hole instead of the penetrating notch shown in FIG. 8. Further, when the through-hole 3A is a through-hole, the shape of the through-hole is not limited to a cylindrical shape, and may be any shape such as a triangular prism shape or a quadrangular prism shape.

Further, as shown in FIG. 13, the cut 2A is cut inward from the peripheral surface of the non-permeable portion 2 to a position connecting the central portion of the surface on one side and the central portion of the surface on the other side. It may be. Further, although not shown, the penetration portion 3A is also cut inward from the peripheral surface of the permeable portion 3 to a position connecting the central portion of the surface on one side and the central portion of the surface on the other side. It may be.

The through-cut 2A and the through-hole 3A of the present embodiment are also linear cuts in plan view as shown in FIG. However, both the cut 2A and the through portion 3A may be cuts of other forms such as an X-shaped cut in a plan view.

(Embodiment 3)
The culture medium 30 for hydroponics of the root vegetables 1 of Embodiment 3 is demonstrated using FIG. 14 and FIG. Hereinafter, differences between the medium 30 for hydroponics of the root vegetable 1 of the present embodiment and the medium 30 for hydroponics of the root vegetable 1 of Embodiment 2 will be mainly described.

The medium 30 for hydroponics of the root vegetable 1 according to the present embodiment has the permeable part 3 and the non-permeable part 2 of the medium 30 for hydroponics of the root vegetable 1 according to the second embodiment. . However, as shown in FIG. 14, the culture medium 30 has an opening 4 C and an opening 4 D in addition to the permeable portion 3 and the non-permeable portion 2, and the tubular portion 4 extending along one direction L. It has more.

In the present embodiment, the cylindrical portion 4 has a cylindrical shape, but may have a rectangular cylindrical shape. Moreover, as for the cylindrical part 4, an outer peripheral surface and an internal peripheral surface do not need to be a substantially similar shape. For example, the outer peripheral surface may be configured by a side surface of a rectangular tube, and the inner peripheral surface may be configured by a cylindrical peripheral surface.

As shown in FIG. 15, the permeable portion 3 and the non-permeable portion 2 are fitted into the cylindrical portion 4. In the present embodiment, the non-permeable portion 2 and the permeable portion 3 are interference-fitted, that is, press-fitted to the cylindrical portion 4. At the time of use, the non-permeable part 2 and the permeable part 3 are press-fitted into the tubular part 4 together with the underground part 1A in a state where the underground part 1A of the root vegetables 1 is inserted into the penetration part 3A.

The cylindrical part 4 has higher rigidity than the permeable part 3 and the non-permeable part 2. For example, the cylindrical portion 4 is preferably formed of plastic, metal, foamed polystyrene, hard rubber, or the like in order to sufficiently exhibit the effect of reducing external force. According to this, since the root vegetables 1 in the permeable part 3 and the non-permeable part 2 are protected from external force by the cylindrical part 4, attachment to the opening part 7A of the culture medium 30 can be performed easily.

The lower end of the cylindrical part 4 has a ring-shaped edge part 4B extending inward from the cylindrical part 4. Therefore, the permeable portion 3 and the non-permeable portion 2 are fitted in the tubular portion 4 so as to be placed on the edge portion 4B. As a result, the permeable portion 3 and the non-permeable portion 2 are arranged in the vertical direction in the cylindrical portion 4. Accordingly, the penetrating part 3A and the notch 2A penetrating are arranged so as to extend along one direction L from the opening 4C on one side of the cylindrical part 4 to the opening 4D on the other side of the cylindrical part 4. If the permeable portion 3 and the non-permeable portion 2 are formed slightly larger in the radial direction than the internal space of the tubular portion 4, the permeable portion 3 and the non-permeable portion 2 are in close contact with the tubular portion 4 to form a tubular shape. Does not fall from part 4. In this case, the cylindrical part 4 may be a cylindrical body that does not have the edge part 4B.

The tubular portion 4 further includes a locked portion 4A that protrudes outward from the outer peripheral surface of the upper end of the tubular portion 4. The locked portion 4A is hooked on the partition portion 7 around the opening 7A. Therefore, the culture medium 30 does not fall from the opening 7A. However, if the peripheral surface of the cylindrical portion 4 has a diameter slightly larger than the diameter of the opening 7A, the cylindrical portion 4 is press-fitted into the opening 7A and thus does not fall from the opening 7A. In this case, the cylindrical part 4 may be a cylindrical body that does not have the locked part 4A.

Hereinafter, the characteristic configuration of the culture medium 30 for hydroponics of root vegetables according to the embodiment and the effects obtained thereby will be described.

(1) The medium 30 for hydroponics of the root vegetable 1 includes the permeable part 3 and the non-permeable part 2. The permeable part 3 has the penetration part 3A extended along the one direction L, and hold | maintains the water | moisture content which permeate | transmitted from the exterior. Further, the non-permeable portion 2 is in contact with the permeable portion 3 so as to cover the penetration portion 3A, and has a cut 2A that communicates with the penetration portion 3A and penetrates along the one direction L, so that moisture is permeable. The release from the portion 3 is suppressed. The non-permeable part 2 has a light shielding property to the extent that the underground part 1A of the root vegetables 1 before germination feels that the current time is the dark period.

According to said structure, while the non-permeable part 2 suppresses the evaporation of the water | moisture content in the permeable part 3 to the ground space 91, the root vegetables 1 show the state around the part 1C from which the root vegetables 1 sprout comes out. It can be in a state where it feels dark. Therefore, it is possible to improve the moisture state and light state around the portion 1C where the root vegetables 1 sprout in the medium 30.

(2) The permeable part 3 may have a surface 31 on one side and a surface 32 on the other side facing the surface 31 on one side. The permeable part 3 may have a peripheral surface 33 connected to each of the outer edge of the surface 31 on one side and the outer edge of the surface 32 on the other side. The impermeable portion 2 may cover the entire surface 31 on one side.

According to this configuration, light can be reliably prevented from entering the permeable portion 3 from the outside through the one surface 31 and from being released from the permeable portion 3 to the outside through the one surface 31. can do.

(3) The permeable portion 3 has a recess 3C, and the non-permeable portion 2 may be fitted into the recess 3C so that the upper surface 3D of the protrusion adjacent to the recess 3C becomes an exposed surface. According to this configuration, the permeable portion 3 is exposed to the ground space 91 when the culture medium 30 is fitted into the opening 7 A of the partition portion 7. Therefore, a certain amount of moisture in the permeable portion 3 evaporates into the ground space 91. As a result, while maintaining the wet state around the portion 1C where the root vegetables 1 bud, the water in the permeable portion 3 is prevented from being spoiled due to the water remaining in the permeable portion 3 for a long period of time. be able to.

(4) The permeable part 3 may include an open cell structure, and the non-permeable part 2 may include a closed cell structure. According to this configuration, the medium 30 for hydroponics of root vegetables as described above can be formed of a general material.

(5) The culture medium 30 has a higher rigidity than the permeable part 3 and the non-permeable part 2 and further includes a cylindrical part 4 extending along one direction L. The permeable part 3 and the non-permeable part 2 May be fitted into the tubular portion 4. According to this, since the root vegetables 1 in the permeable part 3 and the non-permeable part 2 are protected by the cylindrical part 4, the culture medium 30 can be easily attached to the opening part 7A.

(6) The hydroponic cultivation apparatus 90 divides the underground space 92 where the underground part 1A of the root vegetable 1 grows from the ground space 91 where the ground part 1B of the root vegetable 1 grows, and penetrates from the underground space 92 to the ground space 91 A partition 7 having an opening 7A is provided. The medium 30 for hydroponics of the root vegetable 1 is fitted in the opening 7A.

According to this, hydroponics can be performed in a state where the moisture state and the light state around the portion 1C where the buds appear are improved. Therefore, germination of root vegetables 1 can be promoted.
This application claims priority based on Japanese Patent Application No. 2015-180354 filed on Sep. 14, 2015, and incorporates by reference all the contents described in the Japanese application. .

DESCRIPTION OF SYMBOLS 1 Root vegetables 1A Underground part 1B Above-ground part 2 Non-permeable part 2A Notch 3 Permeable part 3A Through-hole part 3C Concave part 3D Upper surface of a convex part 4 Tubular part 7 Partition part 7A Opening part 30 Medium 31 One side surface 32 The other side Surface 33 Perimeter 90 Hydroponic cultivation equipment 91 Ground space 92 Underground space L One direction

Claims

A penetrating portion having a penetrating portion extending along one direction and retaining moisture penetrating from the outside;
The penetrating portion is in contact with the penetrating portion so as to cover the penetrating portion, has a notch penetrating the penetrating portion and penetrating along the one direction, and prevents the moisture from being released from the penetrating portion. An impermeable portion to
The non-permeable part is a medium for hydroponic cultivation of root vegetables, which has a light-shielding property to the extent that the underground part of root vegetables before germination feels when the current time is in the dark period.
The permeable part is
One side surface,
The other surface facing the one surface;
A peripheral surface connected to each of the outer edge of the surface on the one side and the outer edge of the surface on the other side,
The medium for hydroponics of root vegetables according to claim 1, wherein the non-permeable portion covers the entire surface of the one side.
The permeable portion has a recess,
The medium for hydroponic cultivation of root vegetables according to claim 1, wherein the non-permeable portion is fitted into the concave portion such that an upper surface of the convex portion adjacent to the concave portion becomes an exposed surface.
The permeable portion includes an open cell structure,
The culture medium for hydroponics of root vegetables according to any one of claims 1 to 3, wherein the non-permeable portion includes a closed cell structure.
A cylindrical portion having higher rigidity than the permeable portion and the non-permeable portion, and extending along the one direction;
The medium for hydroponics of root vegetables according to any one of claims 1 to 4, wherein the permeable portion and the non-permeable portion are fitted into the cylindrical portion.
Partitioning the underground space where the root part of the root vegetable grows and the ground space where the ground part of the root vegetable grows, and having a partition part having an opening penetrating from the underground space to the ground space,
A hydroponic cultivation apparatus, wherein the medium for hydroponic cultivation of root vegetables according to any one of claims 1 to 5 is fitted into the opening.