JP2015136359A - Plant cultivation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plant cultivation device which can improve work efficiency.SOLUTION: The plant cultivation device includes a lighting fixture 5 that is disposed to be able to adjust its height and irradiates a plant with artificial light, a projection part 15 that projects from a side face of the lighting fixture 5, and a light reflection plate 20 that is disposed outside a side portion of the lighting fixture 5 and includes a slit 20s allowing the projection part 15 to pass through so that it can move vertically.

Description

  The present invention relates to a plant cultivation apparatus.

  In the field of cultivating plants such as vegetables, medicinal herbs, and flower buds, there is a plant cultivation method using a plurality of shelves and steps, and according to this, plants can be produced at a high density in a relatively narrow space. Of the plant cultivation methods, the hydroponics method facilitates plant disease, contamination control and growth control, and enables year-round production. In order to realize this, a closed type plant production system using artificial light in a closed space has been put into practical use.

Regardless of whether it is a closed type or not, there are the following technologies as hydroponic cultivation devices.
For example, a structure is known in which a lattice member is disposed above a bottom plate on which a plant cultivation container is disposed, and a shelf plate in which a lighting device for illuminating the lower portion is incorporated above the lattice member. The lattice members and the shelf can be adjusted in the vertical direction.

  Moreover, in the plant cultivation apparatus provided with the plant cultivation rack which performs plant cultivation on a multi-stage shelf, the following structures are known, for example. That is, in an apparatus in which a plurality of racks are arranged, racks at both ends of a plurality of adjacent racks are racks on which cultivation containers are placed in parallel along the frontage direction so as to be freely inserted into and removed from the work path. Have. Further, the intermediate rack has a shelf on which the cultivation containers are placed in parallel along the frontage direction so as to be freely inserted into and removed from the work path on either side of the intermediate rack. Furthermore, all the racks are provided with a ceiling-side light reflecting plate that covers the ceiling portion, and the racks at both ends are provided with a back-side vertical light reflecting plate that covers the back side. The light source of the lighting fixture is disposed below the ceiling-side light reflecting plate above.

  Moreover, the container for cultivation mounted on the cultivation shelf of a plant is provided with the guide roller on the shelf so that a container can be taken in and out on the front side.

  Furthermore, in the peanut bean sprouts cultivation apparatus, for example, a plurality of growth trays for growing bean sprouts are arranged in a growth case. A structure is known in which a plurality of guide rails on the left and right side walls are provided inside the growth case, which are guide rails for taking in and out the growth tray, on which the tray is slidably placed. In this structure, when the growth of stalks that are sprouts is completed, the stalks are automatically transferred to the tray carriage, and the sprouts are harvested even if the tray carriage is taken out of the growing room.

  Furthermore, in a cultivation apparatus having a tray in which an artificial medium is laid, a structure is known in which the tray is stored in a multistage manner so that the tray can be inserted into and removed from a case body of the cultivation apparatus by a holder. A substantially linear holder that guides and holds the tray is attached to the inner surfaces of both sides of the case body. Holders of the same height level are provided opposite to the left and right. In the daytime, it is possible to further promote the growth by directly pulling out the trays and directly exposing the plants to sunlight.

  In the plant cultivation apparatus having the above-described shelf, tray, and lattice-like member, lighting such as a fluorescent tube is provided above each shelf, tray, and lattice-like member, except for an apparatus that requires a dark room such as bean sprouts. An instrument is attached, and the plant has a structure for irradiating light.

  Moreover, in the hydroponic cultivation apparatus, it is known that the excess culture solution discharged | emitted from a cultivation bed is connected to a waste-liquid collection | recovery system via a flexible piping and a connection tool. The flexible pipe is connected to the culture solution supply pipe and the drainage receiving part via a screw-type connector.

  In addition, in the hydroponic cultivation apparatus, a structure is known in which a plurality of cultivation beds connected in the vertical direction are connected by a flexible pipe, and a pipe for supplying a culture solution from a tank placed below to the uppermost cultivation bed is known. ing. In this case, the pipe is provided with an air injector and a pump, sucked up while mixing the air in the culture medium in the tank, and poured into the highest cultivation bed.

  Furthermore, in the hydroponic cultivation apparatus, the plant cultivation panel without exposure of the nutrient solution, the projecting drainage opening projecting downward from the plant cultivation panel to the bottom of the panel, and the drainage opening 2. Description of the Related Art A structure having a drain nozzle that allows drainage to flow is known. In this case, it is known that the projection at the bottom of the panel and the waste liquid nozzle need not be connected. In this case, the nutrient solution discharged from the plant cultivation panel flows into the waste solution system as it is, and the nutrient solution discharged from the upper stage does not flow as a nutrient solution to the lower stage.

  Moreover, in the hydroponics apparatus, the structure which forms a step in the inner peripheral surface of a cultivation tank, and fits a lid | cover in the step is known. The lid is formed with a plurality of holes for fitting the pot.

JP 2013-192552 A JP 2011-078350 A Japanese Patent Application Laid-Open No. 09-248065 Japanese Unexamined Patent Publication No. 01-30525 JP 2000-157077 A Noto 3024261 gazette Japanese Unexamined Patent Publication No. 07-231731 Japanese Patent Laid-Open No. 07-227162

  In a plant cultivation apparatus using artificial light, a plant is grown by irradiating light with a lighting fixture, but heat generated from the lighting fixture may adversely affect plant growth. For example, when growing a plant that grows in a cool climate, it is not desirable that the heat generated from the lighting fixtures be trapped in the vicinity of the cultivation shelf. Therefore, for example, it is conceivable to eliminate the side plate on the side of the cultivation shelf and adopt a rack-like structure with only a framework so that the air around the cultivation shelf can be easily replaced.

  On the other hand, since sufficient light is required for growing the plant, it is desirable that the distance of the lighting apparatus with respect to the plant can be varied in accordance with the growth of the plant. Further, in order to prevent differences in coloring and growth of leaves in one plant, it is preferable that light is irradiated to the plant from a plurality of directions other than the ground.

  However, since the light emitted from the lighting device diffuses and passes through the space between the rack frames, in the cultivation shelf built in a rack shape with only the framework, especially near the end of the cultivation shelf, There is a tendency that the amount of light reflection decreases. For this reason, the fall of the light irradiation amount to a plant can be prevented by arrange | positioning a plant near the center of a lighting fixture. However, according to this, there is a useless space around the end of the lighting fixture, i.e., an area that cannot be grown even though there is enough space to grow plants as the area on the shelf. Will occur.

  As a countermeasure, it is conceivable to fix the light reflecting member to the frame support of the cultivation shelf, etc., but the light reflecting member deteriorates the air permeability, or the light reflecting plate gets in the way and hands from the side of the rack. It becomes impossible to put in, and work efficiency worsens.

  In addition, the cultivation tray placed on the cultivation shelf is equipped with a hose that flows liquid fertilizer, movable pipes, nozzles, etc., but in the structure where the hose is removed from the cultivation tray when replacing the cultivation tray, the hose is removed efficiently Or mounting. Moreover, although a flexible pipe is easy to bend | curve, since liquid accumulates in the bent part, there exists a possibility that liquid manure may leak during the handling of the flexible pipe after flowing liquid manure.

  Furthermore, in the structure in which the edge of the cultivation tank is formed in a step shape and the lid is fitted, stepped processing accuracy is required, and the larger the size, the more likely the lid will bend, making them difficult to fit. There is.

  The objective of this invention is providing the plant cultivation apparatus which can make work efficiency high.

According to one aspect of the present embodiment, a lighting rack that can be adjusted in height, a cultivation rack in which a wiring cable that supplies power to the lighting apparatus is attached, and a side of the cultivation rack And a light reflector having a slit that is movably passed through the wiring cable.
The objects and advantages of the invention will be realized and attained by means of the elements and combinations particularly pointed out in the appended claims. It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention.

  According to the present embodiment, work efficiency can be increased.

FIG. 1 is a perspective view illustrating an example of a schematic configuration of a plant cultivation apparatus according to the present embodiment. FIG. 2 is a front view showing an example of a cultivation unit attached to the plant cultivation apparatus according to the present embodiment. FIG. 3 is an exploded perspective view showing an example of a cultivation tray and its transport device in the plant cultivation apparatus according to the embodiment. Drawing 4 (a)-(c) is a top view showing an example of a lid of a cultivation tray in a plant cultivation device concerning an embodiment. Drawing 5 (a) and (b) is a front view showing an example of the liquid manure hose connected between the cultivation trays of the plant cultivation device concerning an embodiment. 6A and 6B are front views showing a modification of the liquid manure hose connected between the cultivation trays of the plant cultivation apparatus according to the embodiment. Drawing 7 (a) and (b) is a perspective view showing an example of a cultivation tray in a plant cultivation device concerning an embodiment, a lighting fixture, an elevator for lighting fixture, and a light reflector. Fig.8 (a) is a perspective view which shows the modification of the light reflecting plate in the plant cultivation apparatus which concerns on embodiment, FIG.8 (b), (c) is the reflecting plate of the modification in the plant cultivation apparatus which concerns on embodiment. It is a front view which shows operation | movement of a lighting fixture.

Embodiments will be described below with reference to the drawings. In the drawings, similar components are given the same reference numerals.
FIG. 1 is a perspective view illustrating an example of a schematic configuration of the plant cultivation apparatus according to the present embodiment, and FIG. 2 is a front view illustrating an example of the plant cultivation apparatus according to the present embodiment.

  In FIG. 1, FIG. 2, the cultivation unit 3 which has the cultivation tray 4 and the lighting fixture 5 arrange | positioned on it is attached in multiple stages in the height direction within the cultivation rack 2, and also the cultivation unit 3 of each stage is provided two by two. The structure arrange | positioned in parallel is made into one plant cultivation apparatus 1. FIG. Therefore, in FIG. 1, a plurality of plant cultivation apparatuses 1A, 1C (1B, 1D) are installed adjacently along a first passage A in a plant cultivation room, for example, a clean room (not shown), which is a closed space, Even along the second passage B in the depth direction orthogonal to the first passage A, a plurality of plant cultivation devices 1A, 1B (1C, 1D) are installed adjacent to each other.

  However, when a plurality of first passages A and second passages B are arranged vertically and horizontally, a plurality of plant cultivation devices 1A, 1B installed in respective regions partitioned by the first passage A and the second passage B, A set of 1C and 1D may be regarded as one plant cultivation apparatus.

  In addition, in the following description, the 1st channel | path A at the time of looking down at the plant cultivation apparatus 1 from right above is an area | region where taking out and attachment work of the cultivation tray 4 is performed, and the 1st channel | path side is expressed as a front side. There is.

  The plant cultivation apparatus 1 described below is mainly used for hydroponics. As the plant to be cultivated, for example, leafy vegetables can be considered, but naturally, plants other than leafy vegetables may be used as cultivation targets.

  The plant cultivation apparatus 1 has a cultivation rack 2. The cultivation rack 2 has a framework structure, and a plurality of support columns 2 a are attached to the floor E along the first passage A in a plurality of rows at intervals. The support 2a is erected substantially perpendicular to the floor surface E. Further, the plurality of columns 2a adjacent in the row direction along the second passage B are supported in the lateral direction via the first beam 2b at a plurality of locations, and the first beam 2b and the column 2a are, for example, screws, It is fixed with rivets.

  As illustrated in the front view of FIG. 2 as viewed from the first passage A, two second pillars 2a adjacent to each other along the first passage A are arranged at intervals in the height direction. The beam 2c is passed in the horizontal direction, and the support column 2a and the second beam 2c are fixed by, for example, screws, rivets or the like. As will be described later, the cultivation tray 4 and the lighting fixture 5 are attached to the plurality of second beams 2c arranged in the height direction.

  In FIG. 1, a structure in which the cultivation unit 3 is attached to the second beam 2 c between the two support columns 2 a arranged in one row along the first passage A is used as one plant cultivation apparatus 1. According to this, the 1st plant cultivation apparatus 1A and the 2nd plant cultivation apparatus 1B are adjacent along the 2nd passage B, and also the 3rd plant cultivation apparatus 1C and the 4th plant cultivation apparatus 1D Adjacent. Further, along the first passage A, the first plant cultivation device 1A and the third plant cultivation device 1C are adjacent, and further, the second plant cultivation device 1B and the fourth plant cultivation device 1D are adjacent.

  That is, in FIG. 1, two plant cultivation devices 1 are arranged adjacent to each other along the first passage A, and another two plant cultivation devices 1 are arranged adjacent to each other along the second passage B. The example which the support | pillar 2a of the adjacent plant cultivation apparatus 1 was connected via the beam 2b is shown. However, these plant cultivation devices 1 can be combined and viewed as one plant cultivation device. How many struts 2a, how many first beams 2b, and how many second beams 2c are included in the plant cultivation apparatus 1 depends on the amount of plants to be cultivated and the space where the plant cultivation apparatus 1 is installed. The width may be determined appropriately in consideration of the strength against the weight including the plant or instrument to be placed.

  Next, the cultivation tray 4 and the conveyance tool 6 for conveying this will be described with reference to the front view of FIG. 2 and the perspective view of FIG.

  The cultivation tray 4 has a horizontally long concave cultivation container 4 a and a rectangular flat lid 4 b that covers the upper opening thereof, and is carried into the cultivation rack 2 using the transport device 6, and carried out from the cultivation rack 2. Is done.

  The transfer device 6 slides on the rail 7 passed over the second beams 2c of the plurality of cultivation racks 2 adjacent to each other in the depth direction along the second passage B and moves in the front-rear direction, that is, the second passage B. It is moved in the depth direction along. The rails 7 have a quadrangular cross section, and at least two rails 7 are attached in parallel on the second beam 2c at intervals in the width direction. The transport device 6 is formed in a frame shape having a substantially rectangular plane shape, and sliding portions 6a having a Γ-shaped cross section that are fitted from the inside to the corners of the upper surface and the side surface of the rail 7 run along the rail 7 on both sides thereof. It is formed in a straight line.

  On each of the sliding parts 6a on both sides of the transport device 6, there is a portion where the cultivation tray 4 is placed horizontally along the front end portion and the rear end portion of the transport device 6, and the cultivation tray is included in these portions. The U-shaped container fitting portion 6b into which 4 is fitted is formed by two or more in the front and rear direction when viewed from the first passage A side, that is, the front side. Thereby, the some cultivation tray 4 will be positioned and attached on the conveyance instrument 6. FIG.

  Further, one or more handles 6 c are attached to the front end of the transfer device 6 when viewed from the first passage A. For example, a plurality of handles 6c are attached at intervals in the lateral direction. Further, a reinforcing beam 6 d may be attached to a portion near the center of the frame-shaped transport device 6.

  When storing the cultivation tray 4 in the cultivation rack 2, the operator first fits the cultivation container 4 into the container fitting portion 6 b of the conveyance device 6 from above, and then the conveyance device 6 from the first passage A side. The rear end portion of the sliding portion 6 a is placed on the rail 7 in the cultivation rack 2. Further, the operator puts his / her hand on the handle 6c of the conveying device 6 and slides the sliding portion 6a on the rail 7 while pushing the conveying device 6 and stops at the set position. Thereby, the attachment work of the cultivation tray 4 with respect to the cultivation rack 2 is complete | finished. On the other hand, when taking out the cultivation tray 4 from the cultivation rack 2, an operator pulls out the conveyance device 6 toward the 1st channel | path A, grasping the handle 6c with a hand, and the sliding part 6a of the conveyance device 6 is railed. The cultivation tray 4 is taken out from the cultivation rack 2 together with the conveyance device 6 while being slid on the substrate 7 and supporting the conveyance device 6.

  An operator stores the removed cultivation tray 4 in the cultivation rack of another processing apparatus while being placed on the conveyance device 6 or moves the cultivation tray 4 to the conveyance device 6 so that the cultivation tray 4 can be easily operated during cultivation. Or take it down. Here, as another processing apparatus, for example, as described above, the type of liquid fertilizer to be supplied is different, and an apparatus having the same structure as the present embodiment can be considered.

  As described above, when the conveyance device 6 that slides on the rail 7 provided in the cultivation rack 2 is used, a plurality of cultivation trays 4 can be taken in and out at a time, so that work efficiency is increased. Moreover, since a plurality of container fitting portions 6b for fitting the cultivation tray 4 are formed on the front and rear of the conveying device 6 at intervals, the plurality of cultivation trays 4 can be easily positioned. The space | interval of the area | region of the several plant S to grow can be ensured easily.

  Moreover, the both sides of the plant cultivation apparatus 1 are considered in view of increasing the number of the plants S to be cultivated and thus the harvest amount by increasing the number of the cultivation trays 4 as much as possible with respect to the installation area of the plant cultivation apparatus 1. As shown in FIG. 1, two plant cultivation apparatuses 1 </ b> A and 1 </ b> B are installed adjacent to each other in a back-to-back state and work is performed on one plant cultivation apparatus 1. It is conceivable to provide the first passage A only on the front side to be performed. In that case, by using the transport device 6 having the above-described structure, it becomes easy to work on the cultivation tray 4 in the back of the plant cultivation apparatus 1, and the work is facilitated when the cultivation tray 4 is moved.

  In addition, the conveyance apparatus 6 is formed in the size which can also mount the cultivation tray 4 each mounted in the same level of the plant cultivation apparatuses 1A and 1B adjacent to the depth direction, ie, the direction along the 2nd channel | path B of FIG. May be. For example, as shown in FIG. 1 and FIG. 3, when two cultivation trays 4 are placed in the depth direction at one stage in one plant cultivation apparatus 1A, the plant cultivation apparatuses 1A and 1B can be connected. For example, four cultivation trays 4 can be placed in one stage. Then, while enlarging the conveying instrument 6 rather than the illustration of FIG. 3, by increasing the number of container fitting parts 6b, for example, it is possible to place four cultivation trays 4 on one conveying instrument 6 Also good.

  In the example of FIG. 3, an example is shown in which the pot insertion holes 4 d into which the cultivation pot 9 is fitted are opened in a row in the cultivation tray 4, but it is not necessary to be limited to this. For example, as the cultivation tray 4, a breeding cultivation tray with a wide depth in which a plurality of cultivation pots 9 are arranged vertically and horizontally may be placed on the transport device 6. In this case, only one set of container fitting portions is provided. You can also.

  The cultivation tray 4 placed on the transport device 4 having such a structure will be described with reference to FIGS.

  As shown in FIGS. 3 and 4 (a), a hose insertion hole 4c into which the liquid manure hose 8 is inserted from above is formed near both ends of the plate-like lid 4b of the cultivation tray 4, and between them. In the region, a plurality of pot insertion holes 4d into which the cultivation pots 9 are inserted are formed on a straight line at intervals in the longitudinal direction.

  By the way, in view of increasing the yield of plants, it is desirable to increase the number of plants cultivated in one cultivation tray 4. However, if the leafy vegetables such as lettuce and komatsuna are used, for example, 15 centimeters on the lid 4b so that the leaves do not overlap with each other when the adjacent plants grow, for example, in a moderate width for the growth of the plant. Some width is required. Of course, depending on the type of plant to be cultivated, it is possible to appropriately determine the width of the plant.

  The cultivation tray 4 has a cultivation container 4a such as a cocoon for storing or flowing liquid fertilizer as described above, and a lid body 4b that covers the upper opening of the cultivation container 4a. A pot insertion hole 4d and a hose insertion hole 4c are formed. In the pot insertion hole 4d, a cup-shaped cultivation pot 9 in which the plant S grown is planted is inserted. Since the upper edge of the cultivation pot 9 is caught by the edge of the pot insertion hole 4d, when the lid 4b is lifted, the cultivation pot 9 is also lifted.

  As shown in the plan view of FIG. 4B, the pot insertion holes 4d formed in the lid 4b may be formed in two or more rows so as to be zigzag in the longitudinal direction. In this case, even if the pitch L of the pot insertion holes 4d adjacent in the oblique direction is set to be the same as that of one row, and the pitch of the pot insertion holes 4d in each row is set to L or more, the pot insertion 4d per length is set. Can be increased from 8 holes to 10 holes, for example. Moreover, since the pot insertion holes 4d are arranged in two or more rows in the width direction, when the lid body 4b in which the cultivation pot 9 is fitted is placed on the opening of the cultivation container 4a, it is illustrated in FIG. In this way, the root grown from the cultivation pot 9 or the plant in the cultivation pot 9 hits the inner wall surface of the cultivation container 4a with a slight amount of deviation x in the depth direction. For this reason, it is not necessary to provide structures such as protrusions and steps for positioning between the lid 4b and the cultivation container 4a on the back of the lid 4b or the opening of the cultivation container 4a. As a result, the center of gravity is biased when the cultivation tray 4 is transported and the balance is lost, or the lid 4b is displaced together with the cultivation pot 9 so that the roots of the plants protruding into or outside the cultivation pot 9 do not touch the liquid fertilizer. Can be avoided. In addition, positioning of the lid 4b is facilitated.

  As illustrated in FIG. 3, the cultivation pot 9 has a bottomed cylindrical shape having an opening at the upper end, and has a tapered outer peripheral surface whose upper end is wider than the lower end. It has a structure in which a sponge (not shown) serving as a medium in which a plant S, such as a lettuce seedling, is grown for a predetermined period is inserted. For example, a cubic urethane sponge is used as the sponge. In addition, a plurality of vertically long slits 9a having a width that allows plant roots to protrude are formed in the circumferential direction around the lower portion of the cultivation pot 9, and a plurality of holes (not shown) are formed at the bottom. .

  Liquid fertilizer is supplied through a liquid fertilizer hose 8 inserted into the hose insertion hole 4c on one end side of the lid 4b so that one end of the cultivation container 4a of the cultivation tray 4 is surrounded by a wavy line in the cutaway cross section of FIG. 2 and FIG. This is the liquid fertilizer introduction region 4e. Further, as shown in the partially cutaway cross section of FIGS. 2 and 5A, a liquid fertilizer discharge hole 4f is formed in the bottom portion near the other end of the cultivation container 4a. A liquid amount adjuster 10 that adjusts the liquid amount so that the liquid fertilizer in the cultivation container 4a of the cultivation tray 4 does not exceed the set height is attached to the liquid fertilizer discharge hole 4f and its periphery.

  The liquid amount adjuster 10 has a funnel structure, and a tubular foot 10b extending downward is formed in the liquid fertilizer discharge hole 4f at the bottom thereof. Furthermore, a plurality of vertically long drainage slits 10 a are formed along the circumferential direction in a region exceeding the set height from the bottom of the liquid amount adjuster 10. As a result, the liquid fertilizer R that has reached the set height in the cultivation container 4a of the cultivation tray 4 overflows into the liquid amount adjuster 10 through the drainage slit 10a, and is discharged downward through the tubular legs 10b below it. The

  In the cultivation tray 4, the liquid fertilizer R is usually flowing for liquid fertilization, and the liquid fertilizer R discharged from the upper cultivation tray 4 is used to circulate the liquid fertilizer R between the upper and lower cultivation trays 4. Is flowed to the lower cultivation tray 4 with a liquid manure hose 8.

  By growing in a state where there are very few bacteria compared to an unclosed space such as in a clean room, leaves that are edible parts of leafy vegetables such as lettuce and Japanese mustard can be eaten without washing Keep it clean. On the other hand, in the liquid fertilizer R, there is a possibility that plant wastes or various germs originally contained in the fertilizer are mixed. Therefore, in order to keep the edible portion in a clean state, it is necessary to avoid the liquid fertilizer R from splashing and being applied to the leaves. For this purpose, the cultivation tray 4 is provided with a lid 4b that spatially separates leaves that do not want to touch the liquid manure and roots that need to contact the liquid manure.

  On the other hand, it is necessary to move the cultivated plant from the cultivation rack 2 together with the cultivation tray 4 by the transport device 6 as described above. For example, it moves to another shelf in order to change the type of liquid fertilizer, or the cultivation tray 4 is lowered from the shelf so that it is easy to work during cultivation.

  Therefore, in order to make the cultivation tray 4 movable with respect to the plant cultivation apparatus 1, the liquid manure hose 8 and the cultivation tray 4 can be easily separated because it becomes an obstacle if the liquid manure hose 8 is fixed to the cultivation tray 4. Need to be able to Furthermore, it is necessary to make it possible to circulate the liquid manure between the plurality of cultivation trays 4 without scattering and to easily remove the liquid manure when the cultivation tray 4 is moved. For this reason, the liquid manure hose 8 having the following structure is employed.

  The liquid manure hose 8 connected to the tubular foot 10b of the liquid amount adjuster 10 is fitted to the first hose 8a and the lower portion of the first hose 8a so as to be movable up and down as illustrated in FIG. 5A. And a second hose 8b. The inner diameter of the second hose 8b is larger than the outer shape of the first hose 8a so that the first hose 8a can be inserted. Further, at the lower part of the second hose 8b, a liquid flow hole 8d penetrating the side part is formed in at least one place. The liquid flow hole 8d is in a state where the liquid flow hole 8d is opened in a state where the second hose 8b is extended from the first hose 8a and inserted into the cultivation tray 4 housed in the lower stage of the cultivation rack 2. A fitting 12 for fixing to the support column 2a may be attached to the outer periphery of the first hose 8a.

  In addition, at least the first hose 8a of the liquid manure hose 8 may have a shape that is curved in an initial state, and may have elasticity enough to return to an initial shape by releasing the external force after being deformed by an external force. For example, if you cut a rubber hose that is bundled and bundled in a circular shape into a length of, for example, about 20 cm, the hose that was cut out has an arc shape because it has wrinkles that were bundled in a circular shape. Loosely curved. This curvature can be used as it is. The second hose 8b may be formed so as not to be deformed. In addition, when the second hose 8b is formed to be curved, the curvature thereof may be different from the curvature of the first hose 8a. The first hose 8a and the second hose 8b are made of resin, for example.

  The upper end of the first hose 8 a of the liquid manure hose 8 is fitted into the foot 10 b of the liquid amount adjuster 10 in the cultivation tray 4. In a state where the second hose 8b is extended downward from the first hose 8a and inserted into the hose insertion hole 4c of the cultivation tray 4 stored in the lower stage of the cultivation rack 2, the second hose 8b is connected to the hose insertion hole 4c. The amount of bending may be sufficient to contact the inner edge and apply pressure to the lid 4b in the lateral direction.

  As illustrated in FIG. 5A, the liquid manure hose 8 connected to the foot 10b protruding from the liquid manure discharge port 4f of the cultivation tray 4 is a hose of the lid 4b of another cultivation tray 4 arranged at the lower stage thereof. By being inserted into the insertion hole 4 c, the lower end is arranged in the liquid fertilizer introduction region 4 e of the other cultivation tray 4. Furthermore, the liquid manure which flowed into the 1st hose 8a of the liquid manure hose 8 from the upper cultivation tray 4 is discharged | emitted from the opening 8c of the lower end of the 2nd hose 8b. However, when the lower end comes into contact with the bottom of the liquid fertilizer introduction region 4e, the liquid fertilizer hardly flows from the opening 8c at the lower end. However, even in such a state, the liquid manure flows out from the liquid flow hole 8d formed in the lower side portion of the second hose 8b to the side, so that the liquid manure is supplied smoothly in the liquid manure introduction region 4e. Moreover, since the liquid fertilization hose 8 contacts the edge of the hose insertion hole 4c of the lid 4b of the cultivation tray 4 by its curvature and the movement is restricted, the work of fixing or removing the lower end of the liquid fertilization hose 8 with a member Is no longer necessary.

  The liquid manure hose 8 can be easily inserted into the hose insertion hole 4c by having a structure that expands and contracts in the length direction. The stretchable structure is not limited to the above, and may be, for example, a pipe having at least part of a bellows structure that can be folded in the longitudinal direction. In the case where the liquid manure hose 8 having the bellows structure is employed, the movement of the liquid manure hose 8 can be regulated by placing the edge of the hose insertion hole 4c in the concave portion of the bellows. The plurality of cultivation trays 4 are connected in series by the liquid manure hose 8.

  By the way, when taking out the cultivation tray 4 from the cultivation rack 2, as shown in FIG.5 (b), supply of the liquid fertilizer to the cultivation tray 4 is stopped, and the liquid fertilizer hose 8 stops flowing. Then, the second hose 8b of the liquid manure hose 8 is slid up and removed from the lid 4b. When the second hose 8b is slid along the outer periphery of the first hose 8a, friction due to mutual contact increases due to the difference in curvature between the elastic first hose 8a and the second hose 8b. It will be in the state where it is hard to shift from hose 8a. Thereafter, the connection between the first hose 8a and the liquid amount adjuster 10 is disconnected. Here, when the second hose 8b is slid, if the liquid flow hole 8d on the side thereof is blocked by the first hose 8a, even if liquid fertilizer leaks from the liquid amount adjuster 10, the leaking direction is Since only the opening 8c is provided, diffusion of liquid manure is prevented.

  8 d of liquid flow holes may be formed in the side part of the upper end part of the 2nd hose 8b, and can fit the 1st hose 8a in the 2nd hose 8b, without having to select the direction of the 2nd hose 8b. Workability is improved. Here, when the liquid flow hole 8d is also formed on the side portion of the upper end portion of the second hose 8b, the liquid manure hose 8 is also in a state where the liquid fertilizer hose 8 is extended to supply liquid fertilizer as shown in FIG. Even in the state where the supply is interrupted and pulled out from the lower cultivation tray 4 as shown in (b), the liquid flow hole 8d formed on the side of the upper end of the second hose 8b is blocked by the first hose 8a. It becomes the state.

  By the way, although the liquid fertilizer hose 8 shown in FIG. 5 has the structure which connects the upper end to the tubular leg | foot 10b of the liquid quantity regulator 10, it does not restrict to this. For example, as illustrated in FIGS. 6A and 6B, a structure in which the foot 11a of the funnel-shaped container 11 is connected to the top of the liquid manure hose 8 may be employed. As the funnel-shaped container 11, a vinyl chloride pipe | tube can be used, for example. The tubular foot 11a of the funnel-shaped container 11 is connected to the upper end of the first hose 8a, and an attachment 12 for fixing to the support column 2a is attached around the connecting portion. The funnel-shaped container 11 at the upper part of the liquid manure hose 8 having such a structure is disposed directly below the tubular foot 10b of the liquid amount adjuster 10 in the cultivation container 4a of the cultivation tray 4.

  According to the liquid manure hose 8 having such a structure, even when the foot 10b and the upper end of the liquid manure hose 8 or the funnel-shaped container 11 are spatially separated from each other, the liquid manure hose 8 flows out from the foot 10b in a substantially connected state. The liquid fertilizer can flow into the liquid fertilizer hose 8 without leakage. Therefore, when the cultivation tray 4 is transported by the transport device 6, it does not take time to connect the liquid fertilizer hose 8 to the liquid amount adjuster 10 or to remove it, and the work efficiency can be increased.

  Moreover, the funnel-shaped container 11 and the 1st hose 8a of the liquid manure hose 8 may be integrated. In this case, the liquid manure hose 8 will have the 1st hose 8a and the 2nd hose 8b which upper end exhibits a funnel-shaped shape, and the funnel-shaped container 11 becomes unnecessary. Alternatively, in other words, it can be said that the tubular leg 11a of the funnel-shaped container 11 is elongated and connected to the second hose 8b. When the foot 11a of the funnel-shaped container 11 is elongated, the second hose 8b is fitted in the lower part of the outlet portion of the funnel-shaped container 11 so as to be movable up and down. The inner diameter of the second hose 8b is larger than the outer shape of the foot 11a of the funnel-shaped container 11, and has a shape into which the outlet portion of the funnel-shaped container 11 can be inserted. Alternatively, the funnel-shaped container 11 and the bellows-structured liquid manure hose 8 may be integrated, and the liquid manure hose 8 as a whole may have a funnel shape, that is, the opening diameter at the upper end may be larger than the opening diameter at the lower end. In any case, the upper end opening diameter of the funnel-shaped container 11 or the upper end opening diameter of the liquid manure hose 8 integrated with the funnel-shaped container 11 should be larger than the opening diameter of the tubular foot 10b of the liquid amount adjuster 10. Thus, the liquid manure that has flowed out of the foot 10b can be received without spilling.

  As shown in FIG. 2, the cultivation tray 4 placed on the conveying device 6 is arranged in a plurality of stages in the vertical direction in the plant cultivation apparatus 1. Are arranged in order so that the attachment positions of the liquid fertilizer supply region 4e and the liquid amount adjuster 10 are reversed left and right. That is, every other installation position of the liquid fertilizer supply area 4e of the cultivation tray 4 and the liquid amount adjuster 10 is in the same direction. Then, liquid fertilizer is supplied to the liquid fertilizer supply region 4 e of the uppermost cultivation tray 4 from the liquid fertilizer supply device (not shown) through the liquid fertilizer hose 8, and the supplied liquid fertilizer has a set height in the cultivation tray 4. Then, it leaks through the slit 10a of the liquid amount adjuster 10 toward the lower foot 10b, and is supplied to the liquid fertilizer supply region 4e of the lower stage cultivation tray 4 through the liquid fertilizer hose 8 connected to the foot 10b. Thus, the liquid fertilizer is sent to the plants S cultivated in the cultivation pot 9 fitted in the cultivation trays 4 arranged in a plurality of stages in order from the top to the bottom through the liquid manure hose 8, and sufficient. The liquid fertilizer containing nutrients is always supplied while being exchanged.

  In addition, the foot 10b of the liquid amount adjuster 10 of the cultivation tray 4 attached to the lowest stage is substantially in the opening 14a of the drainage recovery pipe 14 via the relay pipe 13, as shown in FIG. The liquid fertilizer that is connected and collected is processed by a regeneration processing device (not shown) and supplied again to the uppermost cultivation tray 4 as liquid fertilizer.

  Now, the liquid fertilizer hose 8 is inserted into the liquid fertilizer supply area | region 4e through the hose insertion hole 4c to the some cultivation tray 4 arrange | positioned at intervals up and down in the plant cultivation apparatus 1, and the cultivation pot is put into the pot insertion hole 4d. 9 is inserted. For example, a plant S that has finished the seedling raising process is planted in a sponge (not shown) in the cultivation pot 9. The plant needs a sufficient amount of light for photosynthesis. Therefore, as will be described below, it is desirable that the distance of the luminaire 5 to the plant can be made variable according to the growth of the plant.

  As illustrated in the front view of FIG. 2 and the perspective view of FIG. 7A, the lighting fixture 5 has a long shape along the cultivation tray 4, for example, a straight tube fluorescent lamp or a linear LED. Are used, and a power supply wiring cord 15 is connected to one or both ends thereof. The luminaire 5 is attached to the web of the second beam 2c via the elevator 16. The elevator 16 has a plurality of foldable arms 16a that are supported at the upper end by the web of the second beam 2c having a T-shaped cross section and can be expanded and contracted in the vertical direction. The intermediate folded portions of the plurality of arms 16a are connected to each other via a beam 16b so as to be rotatable. A plate 16c having an inverted T-shaped cross section is pivotally supported at the lower end of each of the plurality of arms 16a.

  At the lower end of the plate 16c, support tools 16d for supporting the lighting device 5 in front and rear are attached to a plurality of locations. The support 16d has, for example, a recess formed in the center, and the plate 16c is fixed in the recess by a screw, a rivet or the like, whereby the plate 16c is positioned between the two lighting fixtures 5 and the lighting fixture 5 And the interval between the second beams 2c are reduced. Further, wires 17 drawn upward are attached to the left and right ends of the plate 16c. As shown in FIG. 2, the wire 17 is connected to both ends of the coil spring 19 through a pulley 18 rotatably attached to the web of the second beam 2c, and is pulled upward with a force that does not fall down.

  According to the lighting fixture 5 attached to the elevator 16 having such a structure so as to be movable up and down, the height can be changed in accordance with the growth of the plant, and by raising the lighting fixture 5 higher, Work such as attachment and detachment becomes easy.

  By the way, in order to prevent a difference in coloring and growth of leaves in one plant, it is desirable to irradiate the plant from above and from each surface other than the ground direction. Think of it as However, in the cultivation rack 2 having only a framework as described above, the air flowability can be improved and the temperature can be maintained at an appropriate temperature for plant growth. However, the light emitted from the lighting fixture 5 is supported by the columns 2a, 2b, The light passes through the open space between 2c and diffuses as it is. For this reason, the inventors have realized that it is necessary to provide a light reflecting member around the cultivation rack 2 so that light does not diffuse and return to the plant direction. Then, even if the distance of the lighting fixture 5 with respect to a plant was changed, the light reflecting plate (light reflection part) 20 of the following structure which can reflect the light emitted from illumination in the plant direction was invented.

  The light reflection plate 20 is arranged on the outer side of the cultivation tray 4 in the state accommodated in the plant cultivation apparatus 1 and outside the region where the plurality of pot insertion holes 4d are formed. The light reflecting plate 20 may be a mirror made of glass, silver film or the like, or a mirror-finished metal plate, but a glossy white plate such as a white vinyl chloride plate is sufficient. The light reflecting plate 20 is disposed in order to make the light intensity distribution on the cultivation tray 4 of the light irradiated from the lighting fixture 5 substantially uniform. That is, the light reflection plate 20 compensates at least the amount of light irradiated to the plant grown in the cultivation pot 9 disposed at the positions below the left and right side ends of the lighting fixture 5 by light reflection. Thereby, the light intensity distribution on the cultivation tray 4 can be made substantially equal, and the plant can be grown under substantially equal conditions regardless of the position of the cultivation pot 9.

  Further, as illustrated in FIG. 7B, a vertically long slit 20 s through which the wiring cord 15 connected to both ends of the luminaire 5 is passed is formed in the upper part of the light reflection plate 20. The number of slits 20s may be determined according to the number of lighting fixtures 5. In the example of FIG. 7, since there are two lighting fixtures 5 for one light reflection plate 20, slits 20s are formed at two locations. Has been. The length of the slit 20s is determined in accordance with the vertical movement range of the lighting fixture 5. In addition, when the lighting fixture 5 is a fluorescent lamp, as illustrated in FIG. A reflecting mirror 23 is disposed on the fluorescent tube 5a. As illustrated in FIG. 2, the reflecting mirror 23 has a bag shape surrounding the fluorescent tube 5 a, has a reflecting surface on the upper surface side, and has a transparent film on the lower surface side. Further, a clip 24 may be used to fix the bag-like reflecting mirror 23 to the fluorescent tube 5a.

  According to such a structure, the mountable light reflecting plate 20 can be attached at the end of the work. That is, after performing the operations such as installing the cultivation tray 4 in the frame-shaped cultivation rack 2 and attaching the liquid manure hose 8 and confirming their positions from the second passage B side, the light reflector 20 is cultivated in the plant. It can be attached to the device 1. Moreover, the slit 20s formed in the light reflecting plate 20 also serves as an air flow path, and allows air passing through the space between the lighting fixture 5 and the cultivation tray 3 to pass through to the second passage B side.

  By the way, as illustrated by the two-dot chain line in FIG. 7B, a part of the second beam 2c supporting the lighting fixture 5 and a part of the elevator 16 enter the center of the upper end of the light reflecting plate 20. The notch 20a may be formed. By providing such a notch 20a, the light reflection plate 20 can be expanded in the height direction, and the amount of light reflection to the plant can be increased.

  Further, as illustrated in FIG. 8A, a hanging tool 21 that crosses the upper portion of the slit 20s of the light reflecting plate 20 may be detachably attached. In the example of FIG. 8A, the hanging tool 21 shows an example of a plate shape, but it is not limited to the plate shape, and may be a string shape, for example. The light reflection plate 20 may be hung from the wiring cord 15 in other shapes. According to this, when moving the position of the lighting fixture 5 high, the hanging tool 21 can be hooked on the wiring cable 15 of the lighting fixture 5 and the light reflection plate 20 can be lifted together with the lighting fixture 5.

  For example, when the plants planted in the cultivation tray 4 are small, as shown in FIG. 8B, the lid 4b of the cultivation tray 4 and the light reflection are reflected on the inside of the cultivation tray 4 where the plant S is planted. The plate 20 is inclined so that the angle θ formed by the plate 20 is greater than 90 degrees. Thereby, it can adjust so that the light irradiated diagonally downward toward the outer side from the lighting fixture 5 may be reflected in a horizontal direction.

  Furthermore, as illustrated in FIG. 8C, as the plant S grows and its height increases, the distance between the lighting device 5 and the cultivation tray 4 is increased to ensure an optimum distance. In this case, the light reflecting plate 20 can be lifted and raised through the hanging tool 21 hung on the wiring cable 15 by raising the position of the lighting fixture 5. Thereby, light can be reflected by the light reflection plate 20 above the leaf of the plant that has grown upward, and the amount of light irradiated to the plant S can be optimized. In this case, by providing a gap between the lower end of the light reflection plate 20 and the cultivation tray 4, it is possible to improve the air circulation that deteriorates due to the increase and growth of the leaves of the plant S.

  In the plant cultivation apparatus 1 as described above, first, the cultivation pot 9 containing the sponge (not shown) in which the germinated plant S is planted is fitted into the pot insertion hole 4 d of the cultivation tray 4. Thereafter, the cultivation tray 4 is fitted into the container fitting portion 6 b of the transport device 6. Furthermore, the sliding parts 6a on both sides of the transport device 6 are placed on the rail 7 in the cultivation rack 2, and the transport device 6 is housed in the cultivation rack 2 by the operation as described above. In this case, the liquid level adjuster 10 of the cultivation tray 4 attached at the bottom is connected to the opening 14 a of the drainage recovery pipe 14 via the relay pipe 13. Moreover, it arrange | positions in order so that the supply area | region 4e of the cultivation tray 4 arrange | positioned up and down and the position of the liquid quantity adjuster 10 may turn right and left.

  After arranging the plurality of cultivation trays 4 in this manner, the length of the liquid manure hose 8 is substantially connected to the tubular foot 10b of the liquid amount adjuster 10 of the upper cultivation tray 4 while the upper end of the liquid manure hose 8 is substantially connected. For example, the second hose 8b is pulled down from the curved first hose 8a and inserted into the hose insertion hole 4c of another cultivation tray 4 at the lower stage. In this case, adjustment is made so that the flow hole 8d provided in the lower end side portion of the second hose 8b is not blocked by the first hose 8a. In addition, the liquid manure hose 8 connected to the liquid supply port (not shown) of a liquid manure supply apparatus is substantially connected to the hose insertion hole 4c of the uppermost cultivation tray 4.

  Thereafter, the wiring cable 15 of the lighting fixture 5 is passed through the slit 20 s of the light reflecting plate 20 and the lower end thereof is placed on the cultivation tray 4. Thereafter, the height of the lighting fixture 5 is adjusted by the elevator 16. Further, the angle and the like of the light reflecting plate 20 are adjusted.

  Further, by supplying liquid fertilizer from the liquid fertilizer supply device to the liquid fertilizer supply region 4 e in the uppermost cultivation tray 4 through the liquid fertilizer hose 8, the volume of the liquid fertilizer increases in the liquid fertilizer tray 4, and the slit 10 a of the liquid amount adjuster 10 is formed. When reaching the height, the liquid fertilizer is supplied to the inside from the liquid fertilizer supply area 4e of another lower cultivation tray 4 through the liquid fertilizer hose 8. When the amount of liquid fertilizer therein reaches the slit 10a of the liquid amount adjuster 10, the liquid fertilizer is supplied from the liquid amount adjuster 10 to the lower cultivation tray 4 through the liquid fertilizer hose 8. The liquid fertilizer supplied as such is discharged to the liquid fertilizer recovery pipe 14 through the liquid amount adjuster 10 of the lowermost liquid fertilizer tray 4, reprocessed by the liquid fertilizer recovery apparatus, and further sent to the liquid fertilizer supply apparatus.

  When such circulation of liquid fertilizer is performed for a set number of days, the plant S that absorbs nutrients from the liquid fertilizer and is irradiated with light from the lighting device 5 grows. The height of the lighting fixture 5 is changed using the elevator 16 according to the growth. When the set number of days elapses, in order to place the plants in the cultivation tray 4 in another environment, the cultivation tray 4 is carried out from the plant cultivation apparatus 1 to an apparatus in another environment.

  In order to take out the cultivation tray 4, first, the supply of liquid fertilizer by the liquid fertilizer supply device is stopped, it is confirmed that the liquid fertilizer has stopped flowing through the liquid fertilizer hose 8, and the length of the liquid manure hose 8 is shortened. For example, the second hose 8b is slid up on the first hose 8a and pushed up. In this case, the liquid flow hole 8d on the lower end side portion of the second hose 8b may be closed by the first hose 8a. Furthermore, you may stop light emission of the lighting fixture 5. FIG. Thereafter, the liquid manure hose 8 is removed from the hose insertion hole 4 c of the cultivation tray 4. After that, the conveying device 6 is slid on the rail 7 and pulled out to the first passage A, the cultivation tray 4 is taken out from the plant cultivation apparatus 1, and the cultivation tray 4 is placed on the conveying device 6 in another state. Transfer to device.

  By the way, the light reflecting plate 20 placed on the cultivation tray 4 can be removed from the cultivation tray 4 before or after removing the liquid manure hose 8 to facilitate the work. The light reflecting plate 20 may stand on the support 2a and the second beam 2c of the cultivation rack 2.

  Thus, according to this embodiment, attachment and detachment of the cultivation tray 4 with respect to the plant cultivation apparatus 1 can be made easy, and work efficiency can be improved.

  All examples and conditional expressions given here are intended to help the reader understand the inventions and concepts that have contributed to the promotion of technology, such examples and It is interpreted without being limited to the conditions, and the organization of such examples in the specification is not related to showing the superiority or inferiority of the present invention. While embodiments of the present invention have been described in detail, it will be understood that various changes, substitutions and variations can be made thereto without departing from the spirit and scope of the invention.

DESCRIPTION OF SYMBOLS 1 Plant cultivation apparatus 2 Cultivation rack 3 Cultivation unit 4 Cultivation tray 4a Cultivation container 4b Lid 4c Hose insertion hole 4d Pot insertion hole 5 Lighting fixture 6 Transport fixture 7 Rail 8 Liquid manure hose 8a First hose 8b Second hose 8d Liquid flow Hole 9 Cultivation pot 10 Liquid level adjuster 11 Funnel-shaped container 12 Attachment 15 Wiring cord 16 Elevator 17 Wire 18 Pulley 20 Light reflector 20s Slit 20a Notch 21 Hang

Claims (15)

A lighting fixture that is adjustable in height and irradiates the plant with artificial light;
A protrusion protruding from a side surface of the lighting fixture;
A light reflector including a slit that is disposed on the outer side of the lighting fixture and passes through the protrusion so as to move up and down;
A plant cultivation apparatus.   The plant cultivation device according to claim 1, wherein the protruding portion is a wiring cable that supplies power to the lighting fixture.   The plant cultivation apparatus according to claim 1, wherein a notch portion into which a part of a support body that supports the lighting fixture is formed is formed in an upper portion of the light reflection plate.   The plant cultivation apparatus according to any one of claims 1 to 3, wherein a hanging tool that crosses the slit is attached to an upper portion of the slit of the light reflecting plate. A multi-stage cultivation rack for storing a plurality of cultivation trays for hydroponically cultivating plants, and
Liquid fertilizer hose for supplying liquid fertilizer to the cultivation tray, having a variable length and capable of inserting a lower end toward the hose insertion hole of the cultivation tray,
A fixture for fixing the liquid manure hose to the cultivation rack;
A plant cultivation apparatus.   The multi-stage cultivation rack has at least three or more stages, the liquid manure hose is connected from one end of the upper stage to one end of the middle stage, and the other end from the other end of the middle stage to the other end of the lower stage The plant cultivation apparatus according to claim 5, wherein a liquid fertilizer hose is connected.   The plant cultivation device according to claim 5 or 6, wherein the liquid manure hose includes an upper hose and a lower hose into which the upper hose is inserted.   8. The plant cultivation apparatus according to claim 7, wherein at least the upper hose has elasticity and is curved in the liquid manure hose.   A funnel-shaped container is connected to the upper end of the liquid manure hose, and the upper-end opening diameter of the funnel-shaped container is provided in the cultivation tray, and the diameter of the discharge port through which liquid fertilizer flowing in the cultivation tray is discharged The plant cultivation apparatus according to claim 5, wherein the plant cultivation apparatus is large.   At least the upper part of the liquid manure hose has a funnel-like shape, and the upper end opening diameter of the liquid manure hose is provided in the cultivation tray and is larger than the diameter of the discharge port through which the liquid manure flowing in the cultivation tray is discharged The plant cultivation device according to any one of claims 5 to 8, wherein the plant cultivation device is large.   The plant cultivation device according to any one of claims 5 to 10, wherein a hole is formed in a side portion of a lower end of the liquid manure hose.   The plant cultivation apparatus according to any one of claims 5 to 11, further comprising a tray transporting device on which the cultivation tray is placed and having a sliding portion that slides on a rail in the cultivation rack.   The plant cultivation device according to claim 12, wherein a fitting portion for fitting the cultivation tray is formed in the tray conveying device. A cultivation container that has an opening at the top and is supplied with liquid fertilizer;
Covering the opening of the cultivation container, a plurality of holes provided in a plurality of rows at zigzag intervals in the longitudinal direction, where a cultivation pot insertion hole into which a cultivation pot in which a plant seedling was planted was fitted was formed A plate-shaped lid;
Plant cultivation device having a cultivation tray equipped with   The hose insertion hole is formed on the liquid fertilizer supply area in the cultivation container outside the area where the plurality of cultivation pot insertion holes are formed. Item 15. A plant cultivation apparatus according to Item 14.

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