JP2023159668A - Cultivation pot used in plant cultivation system - Google Patents

Abstract

To provide a cultivation pot in which a plant can be cultivated stably, an effective environment for plant growth can be established, and its own strength can be maintained even when containing many plants, in a plant cultivation system that cultivates plants in a cultivation tank containing a nutrient solution.SOLUTION: A cultivation pot has a plurality of elongated storage parts arranged side by side to contain plants. Each of the plurality of storage parts has: a bottom surface provided with a plurality of first openings; side surfaces respectively rising from both edges in the widthwise directions of the bottom surface; a top surface provided at the top of each of the side surfaces; and a plurality of second openings provided on either the side surface, the top surface, or the intersection of the side surface and the top surface. The plurality of storage parts are integrated as a whole by connecting two adjacent top surfaces, so that the cultivation pot is formed into a rectangular tray shape as a whole.SELECTED DRAWING: Figure 3

Description

The present invention relates to the artificial cultivation of plants, and more specifically to a cultivation pot that is installed in a cultivation tank for hydroponic cultivation of plants to accommodate and support the plants to be cultivated.

Plants including vegetables, flowers, etc. are generally produced by soil cultivation methods (open or semi-closed soil cultivation methods) outdoors or indoors. However, there are problems with soil cultivation methods, such as the fact that the harvest is affected by the season and weather, the problem of continuous cropping, and the risk of diseases caused by pests. In contrast to such soil cultivation methods, indoor artificial cultivation methods have been put into practical use in recent years, in which plants are grown indoors using hydroponic cultivation.

There are various methods of hydroponic cultivation, but the most commonly used method uses a flowing nutrient solution to supply nutrients to the roots of plants. It is divided into the submerged hydroponic method and the submerged hydroponic method. Thin-film hydroponic cultivation is a method in which a nutrient solution containing nutrients necessary for plant growth dissolved in water is poured down onto a flat surface with a gentle slope, and plants are grown using the nutrient solution. Thin-film hydroponic cultivation methods may cause problems with plant growth because root elongation is hindered.

On the other hand, the submerged hydroponic cultivation method is a method in which a nutrient solution is supplied to a cultivation tank in which plants are grown so that the roots of the plants are immersed in the nutrient solution. Compared to the thin-film type hydroponic system, the flooded type hydroponic system uses a large amount of nutrient solution, so the water depth is deeper, root growth is not hindered, and changes in nutrient concentration and liquid temperature are gradual. It has characteristics such as being easy to manage. The present invention relates to the latter submerged type hydroponic cultivation method, and hereinafter, when referring to hydroponic cultivation, it refers to the submerged type hydroponic cultivation. The inventor of the present application has proposed a submerged type hydroponic culture in Patent Document 1.

Patent Document 1 proposes a cultivation pot and a cultivation sheet for performing submerged hydroponic cultivation. In this plant cultivation system, the cultivation sheet 15 shown in FIG. 12 is placed inside the cultivation pot 13A shown in FIG. A support constructed by placing the The cultivation sheet 15 is formed by folding one sheet into an accordion shape in the width direction of the cultivation pot 13A to have a plurality of peaks 15a and valleys 15b extending along the longitudinal direction. A culture medium 14 is arranged between the portion 15a and the valley portion 15b. The peak portion 15a is provided with notches 15c at appropriate intervals along the longitudinal direction. It is said that this notch 15c allows sunlight to properly hit the plant without being obstructed even in the early stages of plant growth, and also to properly irradiate the roots of the plant with sunlight even during cultivation. . As the material of the cultivation sheet 15, it is preferable to use a resin material such as polypropylene.

Japanese Patent Application Publication No. 2015-84750

In general hydroponic cultivation, a hole is made in a float that floats on the surface of the nutrient solution in a cultivation tank, a sponge is inserted into the hole, and plant seeds are sown on the sponge to grow the plant. It has been adopted. However, the holes provided in the float cannot support the plant, and the plant may bend from its roots to touch the surface of the float and grow upward in this bent state. In this case, there are problems such as growth inhibition due to distortion of the shape of the plant, and disease outbreaks in the areas in contact with the float surface.

Furthermore, the support consisting of the cultivation pot and cultivation sheet proposed in Patent Document 1 has the following problems. Since the cultivation sheet of Patent Document 1 is used by folding one sheet, the height from the troughs 15b to the peaks 15a and the distance between adjacent peaks 15a may vary from row to row. If the height from the valley part 15b to the peak part 15a is not constant for each row, there will be places where the valley part 15b of some rows does not reach the water surface, and the plants planted in those places will have roots. There is a risk that it may not stick. Furthermore, if the distance between adjacent peaks 15a is narrow, the growth of plants in that area may be hindered, and if the distance is wide, plants planted in areas with wide gaps may fall. There is.

The present invention is a plant cultivation system that cultivates plants in a cultivation tank containing a nutrient solution, which enables stable cultivation of plants, creates an effective environment for plant growth, and can grow many plants. To provide a cultivation pot that can maintain its own strength even when housed.

The present invention provides a cultivation pot that accommodates cultivated plants and can be used in a plant cultivation system that cultivates plants in a cultivation tank containing a nutrient solution. This cultivation pot is designed to be suitable for, but not limited to, a cultivation tank (also referred to as a flat bed) used for cultivation of leafy vegetables.

A cultivation pot has a plurality of elongated storage sections arranged side by side to accommodate plants. Each of the plurality of accommodating parts has a bottom surface provided with a plurality of first openings, a side surface rising from each of both edges in the width direction of the bottom surface, a top portion provided at the top of each of the side surfaces, a side surface, It has a plurality of second openings provided either at the top or at an intersection between the side surface and the top. The plurality of accommodating portions are connected at two adjacent top portions to be integrated as a whole. Preferably, the two side surfaces of each of the plurality of accommodating portions are formed such that the distance between the two side surfaces increases upward from the bottom surface.

In one embodiment, it is preferable that a rib extending in the length direction is provided on one of the two adjacent tops or a connecting portion of the two adjacent tops. In one embodiment, an outer wall having a plurality of steps formed outwardly extends from the top of the two outermost accommodating units in the longitudinal direction. It is preferable that the Preferably, the top portion is formed in a planar shape, that is, it is a top surface.

It is preferable that a seeding sheet is arranged in the plurality of storage parts so as to be in contact with at least the bottom surface of each of the storage parts.

The cultivation pot according to the present invention has a structure in which each side of adjacent rows of the same width has a top (preferably a flat top surface) at the top, and the adjacent rows are connected to each other at the top, This forms a plurality of longitudinally extending ridges separating adjacent rows. This mountain supports the roots of vegetables on the sides to prevent them from falling over. In other words, this mountain plays the same role as soil in soil cultivation. Therefore, plants grown in the cultivation pot according to the present invention can preferentially use the energy to prevent themselves from falling over for growth, and for a shorter period of time than when the cultivation pot is not used. It is possible to grow plants with high nutritional value, good shape, and high commercial value.

Furthermore, the cultivation pot according to the present invention is provided with a plurality of openings, preferably at the top of each row. These openings allow (1) sunlight to shine on the roots of the plants, (2) carbon dioxide gas generated from the roots to escape into the air, and (3) air from the aeration of the nutrient solution in the cultivation tank to be released through the openings. Benefits include cooling the plants by passing upwards. In addition, as a side effect of feature (3), since air flows within each row, air also flows to the parts of the plants that are in contact with the mountains (i.e., the sides), which can prevent diseases. does not occur. These features also contribute to the short-term growth of highly nutritious plants in the cultivation pot according to the invention.

Furthermore, in the cultivation pot according to the present invention, ribs are formed upward from the flat part. These ribs can prevent twisting or bending due to the weight of vegetables, for example when the cultivation pot is molded from lightweight resin.

By using the cultivation pot according to the present invention, a float becomes unnecessary, thereby increasing the cultivation area.

1 is a schematic overall view of a plant cultivation system in which a cultivation pot according to an embodiment of the present invention is used. FIG. 1 is a schematic side sectional view of a cultivation tank in which a cultivation pot according to an embodiment of the present invention is used. FIG. 1 is a perspective view of a portion of a cultivation pot according to an embodiment of the present invention. FIG. 4 is a schematic diagram showing a state in which leafy vegetables (spinach) are supported in one of the accommodating parts of the cultivation pot shown in FIG. 3; FIG. 4 is a diagram showing how the long sides and short sides fit together when the cultivation pots shown in FIG. 3 are stacked. It is a diagram showing an example in which a cultivation pot according to an embodiment of the present invention is installed in a cultivation tank, and shows an example in which the cultivation pot is installed in a cultivation tank twice as wide as the cultivation pot. This figure shows a state in which the cultivation tank is viewed from the end side in the length direction.

(Overview of plant cultivation system)
FIG. 1 shows a schematic diagram of a plant cultivation system 1 in which a cultivation pot according to an embodiment of the present invention is used. The plant cultivation system 1 includes a house 60, one or more cultivation tanks 10 housed in the house 60 for cultivating plants, and modified air production means 20 for producing modified air RA. The manufactured modified air RA is air modified to have a high oxygen content. Although the modified air production means 20 is provided outside the house 60 in FIG. 1, it may be provided inside the house 60.

In the cultivation tank 10, a single item or multiple items of plants are supported by a support (cultivation pot or float), and a nutrient solution S containing nutrients for growing the plants flows inside. . The cultivation tank 10 is supported by a support frame 19, for example. When many types of plants are cultivated, it is preferable to configure the system in multiple stages so as to be able to accommodate different types of plants and time until harvest. Roots of plants to be cultivated are immersed in the nutrient solution S in the cultivation tank 10. The nutrient solution S is supplied with reformed air RA. Facilities such as a nutrient solution tank 41 are buried in the underground portion of the house 60.

In plant cultivation system 1, leaf vegetables such as spinach and leaf lettuce, fruit vegetables such as tomatoes, eggplants and cucumbers, head vegetables such as Chinese cabbage, cabbage and lettuce, legumes such as peas, fava beans and peanuts, fruits such as strawberries and melons, Flowers and other plants can be cultivated as a single item or as multiple items throughout the year. Furthermore, when cultivating multiple types of plants in the plant cultivation system 1, plants at different growth stages can be mixed and cultivated simultaneously from immediately after germination to harvest.

The plant cultivation system 1 is configured such that a nutrient solution S, in which the same nutrients are mixed so as to be homogeneous throughout, is constantly circulated between all the cultivation tanks 10 in a constant state. The nutrient solution S has the same components regardless of the plant item, growth stage, and cultivation period, and is used continuously to replenish water and/or nutrients by the amount lost due to evaporation and absorption by the plants. Just that is enough.

The components contained in the nutrient solution S are not particularly limited, and any nutrient solution used in general hydroponic cultivation can be used. The nutrient solution S contains, for example, ammonia nitrogen, water-soluble phosphoric acid, nitrate nitrogen, water-soluble potassium, calcium nitrate, water-soluble magnesium, water-soluble manganese, water-soluble boron, water-soluble iron, water-soluble copper, It may contain water-soluble molybdenum and water-soluble zinc. The state of the nutrient solution S is such that at least the values of parameters such as dissolved oxygen concentration (DO), electrical conductivity (EC), temperature Ts, hydrogen ion concentration index (pH), and oxidation-reduction potential (ORP) are approximately constant. Managed to be maintained.

FIG. 2 is a schematic side view showing the cultivation tank 10 and peripheral equipment in which the cultivation pot 12 according to an embodiment of the present invention is used. The cultivation tank 10 is a tank configured so that the nutrient solution S flows in one direction at a predetermined speed.

The length, width, and depth of the cultivation tank 10 are determined depending on the type and amount of plants cultivated in each cultivation tank 10 and the scale of the cultivation facility. determined in such a way that the roots and stems can maintain their original growth shape. For example, the size of the cultivation tank 10 is about 1000 mm in width and about 200 mm in depth for leaf vegetables, and the width and depth are about 200 mm for fruit vegetables such as eggplants and tomatoes. For head vegetables such as lettuce, one with a width and depth of about 200 mm is used. The length of the tank 10 is appropriately set depending on the scale of the greenhouse 60 for any plant, and may be, for example, about 50 cm for a short tank and about 100 m for a long tank.

A cultivation pot is installed in the cultivation tank 10. Cultivation pots of various sizes can be appropriately used depending on the type of plants to be cultivated and the size of the cultivation tank 10. A cultivation pot 12 according to an embodiment of the present invention is designed to be suitable for a cultivation tank 10 (also referred to as a flat bed) used for cultivation of leafy vegetables. Details of the cultivation pot 12 will be described later.

A nutrient solution S is supplied to the cultivation tank 10 from a supply path 45 . The nutrient solution S supplied from the supply port 45a flows in the direction of the arrow S in FIG. 2 within the cultivation tank 10.

Inside the cultivation tank 10, an air pipe 34 and an air supply section 36 are provided. The reformed air RA is supplied to the air supply section 36 through the air pipe 34, and the reformed air RA is supplied to the nutrient solution S from the air supply section 36. The air supply section 36 is preferably, but not limited to, a hollow cylindrical porous body made of ceramic fired at a high temperature.

The cultivation tank 10 is provided with a discharge device 25 for the nutrient solution S, and the nutrient solution S flowing through the cultivation tank 10 is discharged from the discharge device 25. The discharge device 25 is preferably composed of two discharge sections 25A and 25B, but is not limited thereto. In this embodiment, the first discharge part 25A is provided such that the discharge port for the nutrient solution S is located at the same height as the level of the nutrient solution S. Further, the second discharge part 25B has a sheath pipe with an intake port for the nutrient solution S at the lower end, and the discharge port for the nutrient solution S is provided at a lower position than the outlet of the first discharge part 25A. ing. Regarding the ejection device according to this embodiment, the applicant of the present application has filed a separate patent application (Japanese Patent Application No. 2022-001446).

The nutrient solution S discharged from the cultivation tank 10 passes through the discharge paths 46a and 46b and enters the discharge side tank 41, which is preferably buried underground. The nutrient solution S in the discharge side tank 41 is supplied by a circulation pump (not shown) through a pipe 43 to a supply side tank 44 which is preferably buried underground. The nutrient solution S in the supply side tank 44 is supplied to the cultivation tank 10 from the supply port 45a through the supply route 45 by a supply pump (not shown). The supply route 45 may be provided with a valve (not shown) that opens and closes the route as necessary so that the supply amount of the nutrient solution S can be controlled more precisely.

(Cultivation pot)
Hereinafter, the cultivation pot 12 according to one embodiment of the present invention will be described in detail.
FIG. 3 is a perspective view of the cultivation pot 12. In this figure, only a part near one end in the length direction of the cultivation pot 12 is shown, and the omitted part has the shape shown in FIG. 3 continuing in the length direction. ing. The cultivation pot 12 is formed into a rectangular tray shape as a whole, and inside thereof, a plurality of rows 121 to 127 extending in the length direction are arranged side by side in the width direction. The overall shape is not limited to a rectangle, but may be formed into a square tray shape. Note that in this specification, the direction along the long side of the cultivation pot 12 in FIG. (left and right direction). Each of these plurality of rows 121 to 127 accommodates plants to be cultivated. Hereinafter, the plurality of rows 121 to 127 will be referred to as storage sections.

Each of the accommodating parts 121 to 127 has a bottom surface 13. In FIG. 2, the reference numbers of the elements of the accommodating part are mainly shown only in the part of the accommodating part 122 so as not to complicate the drawing. A plurality of openings 13a (a plurality of first openings) through which plant roots pass are provided in the bottom surface 13 so as to be lined up along the length direction of the accommodating parts 121 to 127. The size of the opening 13a can be determined as appropriate depending on the type of plant being cultivated (ie, the thickness of the root bundle). In this embodiment, the width of the opening 13a is the same as the width of the bottom surface 13, but the width of the opening 13a is not limited to this, and the width of the opening 13a may be narrower than the width of the bottom surface 13. Although the shape of the opening 13a is square in the cultivation pot 12 according to this embodiment, it is not limited to this, and may be circular, for example.

Further, in the cultivation pot 12 according to this embodiment, the plurality of openings 13a of the same size are arranged at equal intervals in the length direction of the storage parts 121 to 127, but the invention is not limited to this. For example, a plurality of openings of different sizes may be arranged at equal or unequal intervals, or a plurality of openings of the same size may be arranged at unequal intervals. For example, when different types of plants are housed in one housing part, an embodiment may be adopted in which openings of different sizes are arranged at equal or unequal intervals.

Each of the accommodating parts 121 to 127 has side surfaces 14 (141, 142) rising from both edges of the bottom surface 13 in the width direction. It is preferable that the side surfaces 141 and 142 face each other so that the distance between them increases as the distance increases upward from the bottom surface 13. That is, it is preferable that the cross-sectional shape of each of the accommodating portions 121 to 127 is approximately an inverted trapezoidal shape. This shape is formed in response to the fact that the portion of the plant to be cultivated that fits into the container has a generally inverted conical shape. The distance between the sides 141 and 142 is designed according to the size of the plant part that will fit into the storage parts 121-127.

At the top of each of the side surfaces 14, an apex is provided. The top portion is preferably a planar top surface 15 (151, 152). The top portion is not limited to being flat, and may be formed as a surface that is convex upwardly or downwardly, for example. Regarding one housing part (for example, the housing part 122), a top surface 151 is provided at the top of the side surface 141, and a top surface 152 is provided at the top of the side surface 142. The top surfaces 151 and 152 are provided so as to extend away from the side surfaces 141 and 142 from each other. In this embodiment, the top surfaces 151, 152 are provided at the top of the side surfaces 141, 142, but are not limited to this, and are located below the top of the side surfaces 141, 142 (however, the top surfaces (preferably). The top surfaces 151 and 152 are not limited to horizontal extension, and may be provided, for example, to extend from the top of the side surfaces 141 and 142 at an upward angle or a downward angle.

Adjacent housing portions are connected at their respective adjacent top surfaces 151, 152. For example, the accommodating portion 122 and the accommodating portion 123 are connected by connecting a top surface 152 of the accommodating portion 122 and a top surface 151 of the accommodating portion 123. In this way, by connecting the adjacent accommodating parts 121 to 127 at the mutually adjacent top surfaces 151 and 152, in the cultivation pot 12, the accommodating parts 121 to 127 extending in the length direction are integrated as a whole. , forming widthwise juxtaposed structures.

In other words, the cultivation pot 12 has a structure in which adjacent storage parts are separated by a plurality of peaks (mountains formed by the side surface 141, the top surface 151, the top surface 152, and the side surface 142) extending in the longitudinal direction. . This mountain has a function of supporting the plants housed in each of the housing sections 121 to 127 so that they do not fall over. As schematically shown in FIG. 4, the housed plants are supported by this mountain (specifically, the sides 141, 142 of the mountain). In other words, this mountain part plays the same role as the soil in normal soil cultivation. Plants use energy to keep themselves from falling over, but the cultivation pot according to the present invention can artificially support the plants with this mountain part, and as a result, the plants can keep themselves from falling over. It is thought that the energy used to prevent the plant from collapsing can be used preferentially for growth.

Each of the accommodating parts 121 to 127 has a plurality of openings 17a, 17b (a plurality of second openings) at the intersection 16 (16a, 16b) between the side surfaces 141, 142 and the top surfaces 151, 152. A plurality of openings 17a are provided at the intersection 16a between the side surface 141 and the top surface 151 along the length of the intersection 16a. Similarly, at the intersection 16b between the side surface 142 and the top surface 152, a plurality of openings 17b are provided along the length direction of the intersection. By providing the openings 17a and 17b at such positions, (1) the roots of the plants are exposed to sunlight, (2) the carbon dioxide gas generated from the roots escapes into the air, and (3) the cultivation tank is Benefits include aeration of the nutrient solution, which allows air to escape upward through the openings to cool the plants. In addition, as a side effect of the feature (3), since air flows in each of the housing parts 121 to 127, air also flows in the part where a part of the plant is in contact with the side surfaces 141 and 142. , no disease occurs.

The shape and size of the openings 17a and 17b are not particularly limited as long as they do not impair the above-mentioned advantages of providing the openings. In addition, in the embodiment of FIG. 3, openings 17a and 17b extend across side surfaces 141 and 142 and top surfaces 151 and 152 at intersections 16 (16a and 16b) between side surfaces 141 and 142 and top surfaces 151 and 152. is formed, but is not limited to this. The openings 17a, 17b may be formed, for example, above the side surfaces 141, 142, preferably near the intersection 16 (16a, 16b), or on the top surfaces 151, 152, preferably An opening may be formed near the intersection 16 (16a, 16b). Further, in the embodiment shown in FIG. 3, the openings 17a and 17b are arranged at equal intervals in the length direction of the accommodating parts 121 to 127, but the invention is not limited thereto. may be arranged at equal or unequal intervals, or openings of the same size may be arranged at unequal intervals.

It is preferable that the cultivation pot 12 has a rib 18 extending in the length direction erected at a connecting portion between two adjacent top surfaces 151 and 152. The rib 18 is preferably a plate-shaped body that projects upward from the connecting portion of the two top surfaces 151 and 152. By forming the ribs 18, the cultivation pot 12 is prevented from twisting or bending due to the weight of plants when a large amount of plants are cultivated, especially when the cultivation pot 12 is molded from lightweight resin. I can do it.

The ribs are not limited to being provided at the connecting portion between the two top surfaces 151 and 152, and may be provided on either the top surface 151 or the top surface 152 as long as they can prevent twisting or bending of the cultivation pot 12. It may be provided so as to be erected on top of it. Furthermore, the ribs are not limited to being provided on all of the connecting parts of the top surfaces 151 and 152, but may be provided on every other connecting part as long as it is possible to prevent the cultivation pot 12 from twisting or bending. may be provided. Furthermore, each rib 18 is formed as a plate-like body that is continuous in the length direction, but the ribs may also be formed by, for example, arranging a plurality of plate-like bodies in the length direction in one connecting part. good. Furthermore, although the rib 18 is provided with only one plate in the width direction of each of the top surfaces 151 and 152, the present invention is not limited to this. For example, two plates are provided in the width direction of each of the ribs 18. The shapes may be placed side by side.

On the top surfaces 151 and 152 of the outermost accommodating parts 121 and 127 among the plurality of accommodating parts 121 to 127, long side outer walls 128 extending in the length direction are erected. It is preferable that the long side outer wall 128 is erected on the top surfaces 151, 152 with two steps 128a, 128b (a plurality of steps) formed outward. A flat portion 128c is formed between the first stage 128a and the second stage 128b.

Further, at both longitudinal ends of the plurality of accommodating parts 121 to 127, the bottom surface 13 of each accommodating part (more specifically, the bottom surface end portions 13b located at both ends of the bottom surface 13) and side surfaces 141, A short-side outer wall 129 extending in the width direction is provided so as to be in contact with the end surface of 142 . It is preferable that the short side outer wall 129 is erected from the end surface of the bottom surface 13 with two steps 129a and 129b formed outward. A flat portion 129c is formed between the first stage 129a and the second stage 129b.

By forming the long side outer wall 128 and the short side outer wall 129 in this way, a plurality of cultivation pots 12 can be stacked stably. When a plurality of cultivation pots 12 are stacked, as shown in FIG. The lower surfaces of the top surfaces 151 and 152 (proximate to the long side outer wall 128) are placed, and the lower surface of the flat portion 128c of the upper cultivation pot 12 is located on the upper end 128d of the second stage 128b of the lower cultivation pot 12. Similarly, as shown in FIG. 5(b), on the short side outer wall 129, the flat part 129c of the upper cultivation pot 12 is placed above the upper end 129d of the second stage 129b of the lower cultivation pot 12. The bottom surface is located.

It is preferable that a seed sowing sheet 19 for placing seeds of plants to be cultivated is placed in each of the plurality of storage parts 121 to 127 so as to cover at least the plurality of openings 13a of the bottom surface 13. In FIG. 3, the seed sowing sheet 19 is shown in the storage section 123, but a similar seed sowing sheet 19 can also be arranged in some or all of the other storage sections 121, 122, 124 to 127.

As the seed sowing sheet 19, it is preferable to use an elongated nonwoven fabric cut to a size that covers at least the width of the bottom surface 13 of the storage sections 121 to 127. The seed sowing sheet 19 may be sized to cover not only the bottom surface 13 but also the side surfaces 141 and 142 up to a certain height below. The length of the seed sowing sheet 19 may be the same as or shorter than the length of the bottom surface 13 of the storage portions 121 to 127, as necessary. Although the seed sowing sheet 19 is not provided with holes at positions corresponding to the openings 13a of the bottom surface 13, the roots of the plants can penetrate the seed sowing sheet 19 by themselves and extend downward.

The cultivation pot 12 is installed in the cultivation tank 10 so that the lower surface of the bottom surface 13 of the cultivation pot 12 is in contact with the liquid surface of the nutrient solution S flowing through the cultivation tank 10. One embodiment for installing the cultivation pot 12 in the cultivation tank 10 is shown in FIG. In the cultivation tank 10, a first pot mounting part 10d having a substantially L-shaped cross section and projecting outward is formed at the upper end of both side walls 10b in the width direction. In addition, a plate-shaped support part 10e extending in the length direction is placed on the bottom of the widthwise central part of the cultivation tank 10, and on both sides of the upper end thereof, a cross-section approximately extending outward from both sides of the plate-shaped support part 10e is placed. A second pot mounting portion 10f having an inverted L shape is provided. The cultivation pot 12 can be installed in the cultivation tank 10 by placing the lower part of its long side on the first pot placement part 10d and the second pot placement part 10f.

1 Plant cultivation system 10 Cultivation tank 10a Bottom surface 10b, 10c Side surface 10d, 10f Pot placement part 10e Plate-like support part 11 Support body 12 Cultivation pot 121-127 Plant storage part 128 Long side outer wall 128a 1st stage 128b 2nd Step 128c Flat portion 128d Top end 129 Short side outer wall 129a First step 129b Second step 129c Flat portion 129d Top end 13 Bottom surface 13a Opening (first opening)
13b Bottom end 14, 141, 142 Side surface 15, 151, 152 Top surface 16a, 16b Intersection between side surface and top surface 17a, 17b Opening (second opening)
18 Rib 19 Seed sheet 25 Discharge device (number change)
25A 1st discharge section (number change)
25B Second discharge section (number change)
20 Modified air production means 30 Modified air supply means 34 Air piping 36 Air supply section 40 Nutrient solution circulation means 41 Discharge side tank 41a, 41b Liquid receiving port 41c Liquid sending port 43 Piping 44 Supply side tank 45 Supply route 45a Supply port 46a, 46b Discharge route 60 House RA Reformed air S Nutrient solution

Claims (6)

In a plant cultivation system for cultivating plants in a cultivation tank containing a nutrient solution, a cultivation pot for housing cultivated plants,
A number of elongated storage areas for storing plants are arranged side by side.
Each of the plurality of accommodating parts is
a bottom surface provided with a plurality of first openings; a side surface rising from each of both widthwise edges of the bottom surface;
a top provided at the top of each of the side surfaces;
a plurality of second openings provided on either the side surface, the top portion, or an intersection between the side surface and the top portion;
A cultivation pot in which the plurality of accommodating parts are connected at two adjacent top parts to be integrated as a whole. The cultivation pot according to claim 1, wherein the two side surfaces of each of the plurality of accommodating portions are formed such that a distance between them increases upward from the bottom surface. The cultivation method according to claim 1 or 2, wherein a rib extending in the length direction is provided on either one of the two adjacent apexes or a connecting portion of the two adjoining apexes. pot. At the tops of the two outermost accommodating units among the plurality of accommodating units, an outer wall having a plurality of steps formed outward is erected so as to extend in the length direction. The cultivation pot according to claim 1 or 2. The cultivation pot according to claim 1 or 2, wherein the top portion is configured in a planar shape. The cultivation pot according to claim 1 or 2, wherein a seeding sheet is arranged so as to be in contact with at least the bottom surface of each of the plurality of storage parts.

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