TW202228508A - Cultivation unit and cultivation system - Google Patents

Abstract

Provided are a cultivation unit and a cultivation system which enable easy cultivation of a plant in a culture medium without requiring a cultivation bed that occupies a large footprint, and enables cultivation of a plant which can be unitized. This cultivation unit 10 comprises: a cylindrical body; a liquid distribution part which is disposed lateral to or around the cylindrical body; and a culture medium housing part which is disposed lateral to or around the cylindrical body and below the liquid distribution part. The liquid distribution part is for supplying liquid to a culture medium within the culture medium housing part and is provided with a first connection part that allows liquid to be supplied to the liquid distribution part through the interior of the cylindrical body. The liquid can be discharged through the cylindrical body, by a second connection part that is for discharging liquid from the culture medium housing part into the interior of the cylindrical body.

Description

Cultivation unit and cultivation system

The present invention relates to a plant cultivation unit and cultivation system.

There is a technique (refer to Patent Document 1) for cultivating plants by supplying a culture liquid to a medium. The culture medium is accommodated in a linear cultivation bed, and the culture solution is circulated in the cultivation bed to cultivate plants (see Patent Document 2). [Prior Art Literature] [Patent Literature]

Patent Document 1: Japanese Patent Laid-Open No. 2004-033151 Patent Document 2: Japanese Patent Laid-Open No. 2018-111

(The problem that the invention intends to solve)

An object of the present invention is to provide a cultivation unit and a cultivation system which can easily perform medium cultivation of plants. (Technical means to solve problems)

1. Cultivation unit The cultivation unit of the present invention comprises: cylindrical body; a liquid distribution part, which is provided on or around the side surface of the above-mentioned cylindrical body; and a culture medium storage part, which is arranged on the side surface or around the cylindrical body, and is arranged below the liquid distribution part; The liquid distribution part is a member for supplying liquid to the culture medium in the culture medium storage part, and A first communication part is provided, which can supply liquid to the liquid distribution part through the inside of the cylindrical body.

In the present invention, the liquid distribution portion may be provided with a plurality of liquid supply ports for distributing the liquid to a plurality of regions of the culture medium storage portion.

In the present invention, a water stop part may be provided inside the cylindrical body, which is used for blocking the flow of liquid toward the bottom of the cylindrical body, and guiding the liquid toward the liquid distribution part.

In the present invention, it may be provided with a second communication portion for discharging the liquid from the medium storage portion toward the inside of the cylindrical body.

In the present invention, a liquid receiving portion may be provided on or around the upper portion of the cylindrical body, and a third communication portion may be provided to allow the liquid to flow from the liquid receiving portion to the cylindrical body. internal.

In this invention, the liquid can be supplied to the said liquid distribution part through the inner pipe provided in the said cylindrical body.

In the present invention, a first covering body may be provided to cover the culture medium accommodated in the culture medium accommodating portion.

In the present invention, the culture medium storage portion may include an inner container for accommodating a culture medium, and an outer container for accommodating the inner container.

In the present invention, the culture medium storage portion may be configured by arranging a plurality of the inner containers in a circular shape.

In the present invention, the inner container may be provided with a through hole on the bottom surface.

In the present invention, the culture medium storage portion may be provided with a space in at least a part between the bottom of the inner container and the outer container.

In the present invention, the cylindrical body may be provided with a communication portion for discharging liquid toward the inside of the cylindrical body, and the liquid is supplied to a space provided at least in part between the bottom of the inner container and the outer container. .

In the present invention, the inner container may have a bottom surface formed as an inclined surface. It prevents liquid retention.

In the present invention, a space securing member for forming a space between the bottom surface of the medium storage portion and the medium housed in the medium storage portion may be provided.

In the present invention, the above-mentioned medium storage portion may be partitioned by a partition portion.

In the present invention, a supply pipe for supplying the liquid from the liquid distribution part to the culture medium storage part may be provided.

In the present invention, the liquid distribution part may be provided with a second covering body.

In the present invention, it may be provided with an attracting member hooking portion for hooking the hook for attracting around the cylindrical body.

In the present invention, a stem hanging portion for hanging the stem of the plant to be cultivated on the side surface of the medium storage portion may be provided.

In the present invention, the liquid receiving portion may be provided with a filter portion for removing solids in the liquid.

2. Cultivation system The cultivation system of the present invention comprises: The cultivation unit of the present invention; and Rails, which guide the movement of the above-mentioned cultivation units.

In the present invention, the above-mentioned rail may be provided above the above-mentioned cultivation unit, and the above-mentioned cultivation unit may be suspended from the above-mentioned rail to move.

In the present invention, the cultivation unit may be provided above the rail, and the cultivation unit may move on the rail.

In the present invention, a first toothed portion or a chain is provided on the side of the above-mentioned cultivation unit, and a second toothed portion or a chain corresponding to the first toothed portion or the chain is provided on the above-mentioned track. The first toothed part or the chain of the unit is engaged with the second toothed part, so that the cultivation unit can be rotated.

In this invention, the said cultivation unit is rotatable, and has the engagement piece provided rotatably with respect to the said rail, and the said cultivation unit can be rotated by the said engagement piece being engaged with the said cultivation unit.

In this invention, the said engaging piece makes the inner surface contact|abut with a cultivation unit, and the said cultivation unit can be rotated by providing resistance to the site|part which contact|abutted with the said cultivation unit.

In the present invention, the engaging piece may have a portion that is bent toward the inner side of the rail and is open to the outer side of the rail.

In this invention, the friction body may be provided in the said cultivation unit side of the said engagement piece.

In this invention, the liquid supply part for supplying water to the said liquid receiving part may be provided.

In this invention, the liquid drain part which receives the liquid below the moving area of the said cultivation unit may be provided.

In the present invention, the term "medium" refers to a concept that includes, for example, any material having a function of maintaining the roots of a plant, or a solid shape capable of absorbing or releasing water and adsorbing and maintaining nutrients, and includes soil media and porous materials. Porous materials include coral sand and coral gravel. (Compared to the efficacy of the prior art)

According to the present invention, medium cultivation of plants can be easily performed without requiring a large cultivation bed occupying a large area. Furthermore, novel plant cultivation which can be unitized can be realized.

Hereinafter, preferred embodiments of the present invention will be described in detail.

1. Cultivation unit 10 1-6, the cultivation unit 10 of this embodiment is demonstrated.

The cultivation unit 10 of the present embodiment includes: a cylindrical body 20 ; a liquid distribution part 30 provided on or around the side surface of the cylindrical body 20 ; , and is arranged below the liquid distribution part 30 . The liquid is not particularly limited as long as it is a liquid required for plant cultivation, and for example, water and a culture medium may be included.

The liquid distribution part 30 is a member for supplying liquid to the medium 50 in the medium storage part 40 , and is provided with a first communication part 70 for supplying the liquid through the inside of the cylindrical body 20 to the liquid distribution section 30 . The liquid distribution part 30 may be provided with a plurality of liquid supply ports, and the liquid supply ports are used for distributing the liquid to a plurality of regions of the culture medium storage part 40 .

A water stop portion 24 may be disposed inside the cylindrical body 20 , and the water stop portion 24 is used for preventing the liquid from flowing downward toward the cylindrical body 20 and guiding the liquid toward the liquid distribution portion 30 . The cylindrical body 20 may be constituted by, for example, a stainless steel column. In addition, it is provided with a second communication portion 72 for discharging the liquid from the culture medium storage portion 40 toward the interior of the cylindrical body 20 . In addition, a liquid receiving portion 60 may be provided on or around the upper portion of the cylindrical body 20, and a third communicating portion 74 may be provided, and the third communicating portion 74 is used to allow the liquid to flow from the liquid receiving portion 60 to the Inside the cylindrical body 20 . Accordingly, the liquid received by the liquid receiving portion 60 enters the interior of the cylindrical body 20 through the third communication portion 74 , and flows into the liquid distribution portion 30 and the culture medium sequentially through the first communication portion 70 . The accommodating portion 40 flows into the interior of the cylindrical body 20 through the second communication portion 72 and is discharged.

As shown in FIG. 7 , a first covering body 46 may be provided to cover the culture medium 50 accommodated in the culture medium accommodating portion 40 . By providing the first covering body 46, it can suppress the evaporation of the liquid in the medium 50.

The culture medium storage unit 40 may include an inner container 40b for accommodating the culture medium 50, and an outer container 40a for accommodating the inner container 40b. As shown in FIGS. 8 and 9 , through holes 40b1 may be provided on the bottom surface and the side surface of the inner container 40b. The culture medium accommodating part 40 can be formed by arranging a plurality of inner containers 40b in a circular shape. The culture medium storage portion 40 may be provided with a space in at least a part between the bottom of the inner container 40b and the outer container 40a. When the inner container 40b is provided, the second communication portion 72 may be configured to discharge the liquid toward the inside of the cylindrical body 20, and the liquid system is supplied to at least a part between the bottom of the inner container 40b and the outer container 40a. Set space. The bottom surface of the inner container 40b may be formed as an inclined surface. By putting the culture medium 50 into the plurality of inner containers 40b, it is possible to easily perform washing and exchange of the culture medium 50.

As shown in FIG. 3 , a space securing member 48 may be provided for forming a space between the bottom surface of the culture medium accommodating portion 40 and the medium 50 accommodated in the medium accommodating portion 40 . The roots and the culture medium 50 are in contact with the air, so that oxygen supply and temperature adjustment can be facilitated. For example, by contacting with air, the liquid can be easily vaporized, and the effect of reducing the temperature of the root can also be obtained. The culture medium storage part 40 may also be partitioned by the partition part 42 . By wrapping the medium 50 with the medium net 52, the medium 50 can be easily taken out and the medium 50 can be easily washed. The space securing member 48 is not particularly limited as long as it can secure the space, and for example, it may be formed of an elastic net.

In the liquid distribution part 30 , a supply pipe 32 extending from the supply port of the liquid distribution part 30 may be provided. By providing the supply pipe 32, the position at which the liquid is supplied to the medium storage unit 40 can be set in a point-by-point manner, and the position can be easily changed. The liquid distribution part 30 may be provided with a second covering body 34 . By providing the second covering body 34, the mixing of dust and the like can be prevented.

Around the cylindrical body 20, a lure hooking portion 80 for hooking a hook (a lure) 86 for attracting can be provided. By arranging the attracting element tying portion 80 in a circular shape, the stem of the plant can be wound in a spiral shape. That is, as the plant grows, by rotating the attracting member 86 in a certain rotation direction, the attracting rope can be wound around the cultivation unit 10 in a spiral shape.

In addition, a stem tie portion 82 may be provided, and the stem tie portion 82 is used to tie the stem of the plant cultivated on the side surface of the medium storage portion 40 . Thereby, even if the stem is extended, the stem can still be wound around the stem tying portion 82 .

As shown in FIG. 10 , a filter part 62 for removing solids in the liquid can also be provided in the liquid receiving part 60 . The filter part 62 can be a hemispherical tray with through holes, or can be realized by an elastic net.

It is also possible to supply the liquid to the liquid distribution part 30 through the inner tube 22 provided inside the cylindrical body 20 .

2. Variation of liquid supply form As shown in FIG. 11 , the supply of the liquid to the liquid distribution part 30 may also be supplied from below. Specifically, an inner tube 22 can also be provided inside the cylindrical body 20 , and the liquid is supplied to the liquid distribution part 30 through the inner tube 22 . As for the liquid, the liquid accumulated in the tank body T1 may be pumped by the pump P1. When the cultivation unit 10 is rotated, the cylindrical body 20 may be rotated, and the inner tube 22 may be fixed so as not to rotate.

Although the tank body T1 applied to this embodiment is not particularly limited, for example, as shown in FIG. 12 , it may be a form having a sub-tank body T1a and a main tank body T1b.

3. Cultivation system using cultivation units (1) The first cultivation system As shown in FIG. 13 , the cultivation unit 10 may be installed on the base 90 . As shown in FIG. 14 , an annular bearing 92 may be provided between the cultivation unit 10 and the base 90 , and the control device S1 drives the motor M1 to actuate the annular bearing 92 to make the cultivation unit 10 rotatable relative to the base 90 . A groove body T1 can also be provided in the base 90 . An example of the flow of the liquid from the tank body T1 to the liquid distribution part 20 and the culture medium storage part 30 is shown in FIG. 15 . The liquid is drawn from the tank body T1 by the pump, supplied to the liquid distribution part 30 through the inner pipe 22 , and supplied to the medium storage part 40 through the supply pipe 32 , and flows into the cylindrical body 20 through the second communication part 72 . Inside, it can return to tank T1. In addition, the cultivation unit 10 can also be rotated by the manual operation of an operator. In this way, the cultivation unit 10 can be rotated, thereby uniformly irradiating the cultivated plants with light.

(2) The second cultivation system As shown in FIGS. 16 and 17 , a plurality of cultivation units 10 may be provided on the turntable 94b provided on the base body 94a. A first annular bearing 92a can be disposed between the rotary table 94b and the base body 94a, and the rotary table 94b can be rotatably provided on the base body 94a. The cultivation unit 10 can be placed on the rotary table 94b via the second annular bearing 92b, whereby the cultivation unit 10 can be rotated relative to the rotary table 94b. A circumferential drainage ditch 96 for recovering the drainage from the cultivation unit 10 can also be arranged around the base body 94a, and the drainage ditch 96 and the tank body T1 are connected by a pipeline. The liquid supply column 98 may be provided in the center of the turntable 94b, and the liquid may be supplied to each cultivation unit 10 from the liquid supply column 98. A light source for promoting photosynthesis of cultivated plants, such as an LED light source, may also be provided around the liquid supply column 98 .

(3) The third cultivation system As shown in FIGS. 18 to 21 , the cultivation system 100 includes a cultivation unit 10 and a rail. The cultivation unit 10 can be moved by rail guidance. As an aspect, the cultivation unit 10 may be suspended from the movable body 112 mounted on the upper rail 110 , and the cultivation unit 10 may be moved by moving the movable body 112 .

As another aspect, the cart 122 may be installed on the lower rail 120, the cultivation unit 10 may be placed on the cart 122, and the cultivation unit 10 may be moved by moving the cart 122. A ball bearing or the like may be interposed between the cultivation unit 10 and the trolley 122 , so that the cultivation unit 10 can rotate relative to the trolley 122 . In this case, the cultivation unit 10 may be rotated by passing the side of the engaging piece 140 . The engaging piece (rotation mechanism) 140 is capable of rotating the cultivation unit by abutting the inner surface thereof with the cultivation unit 10 and supplying resistance to the site in contact with the cultivation unit 10 (refer to FIG. 21(A) ). In addition, the engaging piece 140 may have a portion that is bent toward the inner side of the rail and is open to the outer side of the rail (refer to FIG. 21(B) ). Thereby, the cultivation unit 10 can be rotated during the movement in both directions. If an elastic plate such as a rubber material is provided in advance on the surface of the engaging piece 140 in contact with the cultivation unit 10, smooth rotation can be achieved.

Below the movement of the cultivation unit 10, a drainage ditch 96 for receiving the drainage from the cultivation unit 10 is provided.

As shown in FIG. 22 and FIG. 23 , by setting a chain on the bottom surface of the cultivation unit 10 , a toothed portion (flat sprocket) 142 is provided on the side surface of the lower rail 110 , and the toothed portion 142 is connected to the chain 144 By engaging, when the cultivation unit 10 passes the side of the toothed portion 142, the cultivation unit 10 can be rotated. A toothed portion instead of a chain can also be provided on the bottom surface of the cultivation unit 10 , and the toothed portion corresponds to the toothed portion 142 provided on the side surface of the lower rail 110 . When the cultivation unit 10 passes next to the toothed portion 142 on the side surface of the lower rail 110 , the resin plate 142 of urethane material can also be used to press against the cultivation unit 10 .

As shown in FIG. 24 , by disposing the L-angle stay 124 under the trolley 122 and disposing the stay receiving portion 126 on the side of the lower rail 120 to receive the L-angle stay 124 , the cultivation unit 10 can be prevented from being damaged. dump.

As shown in FIG. 25 , the trolley 122 on which the cultivation unit 10 is placed may be engaged with the chain 126 provided with the flange, and the chain 126 may be rotated by the sprocket 128 to move the cultivation unit 10 . The wheel 122a provided with the V-groove can also be moved by engaging the mountain-shaped rail 120a.

As shown in FIG. 26 , the movement of the cultivation unit 10 can also be divided into a linear movement area and a turning area, and the linear movement area is used as the cultivation space, and the turning area is used, for example, as a work space and a maintenance space. As shown in FIG. 27 , the work space, the maintenance space, and the cultivation space can be separated, and the air conditioner can be effectively operated in the work space and the maintenance space, so as to improve the work environment. In other words, it can easily move the cultivation unit 10 between the space where the air conditioner operates effectively and the cultivation place.

As shown in FIG. 27 , in the cultivation space, an LED irradiation system 150 and a chemical spray system 152 may be installed, and the cultivation unit 10 may be moved to a truck by moving means 160 such as a crane. When moving to a truck, there may also be an area for immersing a certain liquid in the culture medium part.

Various modifications can be made to this embodiment within the scope of the present invention.

10: Cultivation unit 20: Cylindrical body 22: Inner tube 24: Water stop 30: Liquid distribution section 32: Supply pipe 34: Second cover 40: Culture medium storage part 40a: Outer packaging 40b: inner container 42: Division 46: The first cover 48: Space Assured Components 50: Medium 52: Media Network 60: Liquid access part 62: Filtration Department 70: The first communication part 72: Second communication part 74: Third communication part (opening part) 80: Attractor hanger 82: Stem hanging part 84: Hanging utensils 86: Lure 90: Pedestal 92: Ring bearing 92a: first annular bearing 92b: Second ring bearing 94a: seat body 94b: Rotary table 96: Gutters 98: Liquid supply column 100: Cultivation system 110: Upper Track 112: Moving body 120: Lower track 120a: Yamagata Track 122: Trolley 122a: Wheels with V-groove 124a: L angle stay 124b: stay receiving part 126: Chain with flange 128: sprocket 130: Liquid supply part 132: Liquid Drainage Department 140: Snap-in piece 142: toothed part 144: Chain 146: Resin Board 150: LED illumination system 152: Pharmacy spray system 160: Mobile Means M1: Motor P1: Pump S1: Control device T1: tank body

Fig. 1 is a diagram schematically showing a cultivation unit of an embodiment. Fig. 2 is a diagram schematically showing a cultivation unit of the embodiment. Fig. 3 is an exploded view schematically showing the cultivation unit of the embodiment. Fig. 4 is a diagram schematically showing a cultivation unit of the embodiment. Fig. 5 is a diagram schematically showing a cultivation unit of the embodiment. Fig. 6 is a diagram schematically showing a cultivation unit of the embodiment. Fig. 7 is an enlarged view schematically showing a part of the cultivation unit of the embodiment. Fig. 8 is an enlarged view schematically showing the inner container of the cultivation unit of the embodiment. Fig. 9 is an enlarged view schematically showing the inner container of the cultivation unit of the embodiment. Fig. 10 is an enlarged view schematically showing a part of the cultivation unit of the embodiment. FIG. 11 is a diagram schematically showing a modification of the cultivation unit of the embodiment. Fig. 12 is a diagram schematically showing a pump applied to the cultivation unit of the embodiment. Fig. 13 is a diagram schematically showing an application example of the cultivation unit of the embodiment. Fig. 14 is an exploded view schematically showing an application example of the cultivation unit of the embodiment. Fig. 15 is a diagram schematically showing an application example of the cultivation unit of the embodiment. Fig. 16 is a diagram schematically showing an application example of the cultivation unit of the embodiment. Fig. 17 is a diagram schematically showing an application example of the cultivation unit of the embodiment. Fig. 18 is a diagram schematically showing the cultivation system of the embodiment. Fig. 19 is a diagram schematically showing the cultivation system of the embodiment. FIG. 20 is a diagram schematically showing a cross section of the cultivation system along the line B-B shown in FIG. 19 . 21(A) and (B) are diagrams schematically showing the cultivation system below the cross section along the horizontal plane. Fig. 22 is a diagram schematically showing an example of the cultivation system of the embodiment. Fig. 23 is a diagram schematically showing a rotation state of the cultivation unit. FIG. 24 is a diagram schematically showing the state of the overturn prevention of the cultivation system. Fig. 25 is a diagram schematically showing the movement of the cultivation system. Fig. 26 is a diagram schematically showing the orbital aspect of the cultivation system. FIG. 27 is a diagram schematically showing an application example of the cultivation system.

10: Cultivation unit

20: Cylindrical body

24: Water stop

30: Liquid distribution section

32: Supply pipe

40a: Outer packaging

40b: inner container

50: Medium

60: Liquid access part

70: The first communication part

72: Second communication part

74: Third communication part (opening part)

80: Attractor hanger

86: Lure

P1: Pump

Claims (30)

A cultivation unit comprising: cylindrical body; a liquid distribution part, which is provided on or around the side surface of the above-mentioned cylindrical body; and a culture medium storage part, which is arranged on the side surface or around the cylindrical body, and is arranged below the liquid distribution part; The liquid distribution part is a member for supplying liquid to the culture medium in the culture medium storage part, and A first communication part is provided, which can supply liquid to the liquid distribution part through the inside of the cylindrical body. The cultivation unit of claim 1, wherein the liquid distribution part is provided with a plurality of liquid supply ports for distributing the liquid to a plurality of regions of the culture medium storage part. The cultivation unit according to claim 1, wherein a water stop portion is provided inside the cylindrical body for blocking the flow of liquid toward the downward direction of the cylindrical body and guiding the liquid toward the liquid distribution portion. The cultivation unit according to any one of claims 1 to 3, wherein a second communication portion is provided for discharging the liquid from the medium storage portion toward the inside of the cylindrical body. The cultivation unit according to any one of claims 1 to 4, comprising a liquid receiving portion provided on the side surface of or around the upper portion of the cylindrical body, and a third communication portion is provided for allowing the liquid to flow from the liquid The receiving portion flows into the inside of the cylindrical body. The cultivation unit according to any one of claims 1 to 5, wherein the liquid is supplied to the liquid distribution unit through an inner tube provided inside the cylindrical body. The cultivation unit according to any one of claims 1 to 6, wherein a first covering body is provided to cover the culture medium accommodated in the culture medium accommodating portion. The cultivation unit according to any one of claims 1 to 7, wherein the culture medium storage portion includes an inner container for accommodating a culture medium, and an outer container for accommodating the inner container. The cultivation unit according to claim 8, wherein the culture medium storage portion is configured by arranging a plurality of the inner containers in a circular shape. The cultivation unit according to claim 8 or 9, wherein the inner container is provided with a through hole in the bottom surface. The cultivation unit according to any one of claims 8 to 10, wherein the culture medium storage portion is provided with a space in at least a part between the bottom of the inner container and the outer container. The cultivation unit according to any one of claims 8 to 11, wherein the cylindrical body is provided with a communication portion for discharging liquid toward the inside of the cylindrical body, and the liquid is supplied between the bottom of the inner container and the At least a portion of the space provided between the outer containers. The cultivation unit according to any one of claims 8 to 12, wherein the inner container has a bottom surface configured as an inclined surface. The cultivation unit according to any one of claims 1 to 13, wherein a space securing member is provided for forming a space between the bottom surface of the medium storage portion and the medium housed in the medium storage portion. The cultivation unit according to any one of claims 1 to 14, wherein the medium storage portion is partitioned by a partition portion. The cultivation unit according to any one of claims 1 to 15, wherein a supply pipe for supplying the liquid from the liquid distribution part to the culture medium storage part is provided. The cultivation unit according to any one of claims 1 to 16, wherein the liquid distribution part is provided with a second covering body. The cultivation unit according to any one of Claims 1 to 17, wherein a lure hooking portion for hooking a hook for attracting around the cylindrical body is provided. The cultivation unit according to any one of Claims 1 to 18, wherein a stem tying portion for tying the stem of the plant to be cultivated on the side surface of the medium storage portion is provided. The cultivation unit according to any one of claims 1 to 19, wherein the liquid receiving portion is provided with a filter portion for removing solids in the liquid. A cultivation system comprising: the cultivation unit of any one of claims 1 to 20; and Rails, which guide the movement of the above-mentioned cultivation units. The cultivation system of claim 21, wherein the rail is provided above the cultivation unit, and the cultivation unit is suspended from the rail to move. The cultivation system of claim 21, wherein the cultivation unit is provided above the rail, and the cultivation unit moves on the rail. The cultivation system of claim 23, wherein a first toothed portion or chain is provided on the side surface of the cultivation unit, and a second toothed portion or chain corresponding to the first toothed portion or chain is provided on the rail and the cultivation unit is rotated by engaging the first toothed portion or the chain of the cultivation unit with the second toothed portion. The cultivation unit of claim 23, wherein the cultivation unit is set to be rotatable, and It has an engaging piece rotatably provided with respect to the above-mentioned rail, The said cultivation unit is rotated by the said engagement piece being engaged with the said cultivation unit. The cultivation system of claim 25, wherein the engaging piece abuts the inner surface of the engaging piece with the cultivation unit, and rotates the cultivation unit by providing resistance at the site abutting against the cultivation unit. The cultivation system of claim 26, wherein the engaging piece has a portion that is curved toward the inner side of the rail and is open to the outer side of the rail. The cultivation unit according to any one of claims 25 to 27, wherein a friction body is provided on the cultivation unit side of the engaging piece. The cultivation unit of any one of Claims 25-28 which is provided with the liquid supply part for supplying water to the said liquid receiving part. The cultivation unit according to any one of Claims 25 to 29, wherein a liquid drainage portion for receiving liquid is provided below the moving area of the cultivation unit.

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