JP2020036578A - Member for nutritious liquid cultivation, nutritious liquid cultivation method, and nutritious liquid cultivation system - Google Patents

Abstract

To provide a member for nutritious liquid cultivation and a nutritious liquid cultivation method in which supply of nutritious liquid and oxygen can be appropriately performed, growth of roots is improved, and yield of leaf vegetable or fruit vegetable can be secured even in an undeveloped rhizosphere environment of an initial cultivation period.SOLUTION: A member for nutritious liquid cultivation 1 has a cultivation bed vessel 2, a fix planting panel 3, a seedling frame 4, a waterproof sheet 5, a hydrophilic sheet 6, and a sprinkling member (sprinkling tube 7). A seedling root pot 9 is mounted into a recess 4m at the top face of the seedling frame 4 through a planting hole 3a of the fix planting panel 3, nutritious liquid is discharged from the sprinkling member (sprinkling tube 7) toward the seedling root pot 9 and a top part 4c of the seedling frame 4, and a plant is raised by flowing nutritious liquid on a bottom face 2b of the cultivation bed 2.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a member for hydroponics of a plant, and a method and a system for hydroponics of a plant using the same. Particularly, even in the cultivation of a plant with dense roots, supply of nutrient solution and oxygen to the root is possible. The present invention relates to a hydroponic cultivation member, a hydroponic cultivation method, and a hydroponic cultivation system which are improved.

  In recent years, attempts have been made to cultivate leafy vegetables and fruit vegetables by hydroponic cultivation using nutrient solutions and the like. Hydroponics has advantages such as stable production of vegetables that are not affected by the weather, cultivation places are not limited, and cultivation with less outflow of fertilizer is possible.

  In hydroponic cultivation, it is important to properly supply nutrient solution and oxygen to the roots of the plant. For example, Patent Literature 1 discloses a nutrient solution cultivation method for stably growing cucumber by cultivating by supplying a nutrient solution enough to wet a water retention sheet laid on the bottom surface of a cultivation bed. I have. However, there is a problem that the supply of the nutrient solution is not sufficient depending on the type of the plant when the nutrient solution is wet enough to wet the water retention sheet.

  Patent Literature 2 discloses a cultivation bed having a cultivation bed tub having an inclined bottom surface and a planting panel plate having a plurality of planting holes disposed thereon, which is disposed on the cultivation bed tub. In the member for nutrient cultivation in which a drainage groove is provided on the bottom surface of the tank, a hydrophilic sheet is disposed so as to cover the drainage groove, and a ventilation space is formed between the hydrophilic sheet and the bottom surface of the drainage groove. A hydroponic cultivation member and a hydroponic cultivation method characterized by being performed are disclosed.

JP 2006-13631 A JP-A-2017-104023

  The rhizosphere environment of a plant varies greatly depending on the growth stage. The rhizosphere environment is, for example, a root length, a development area, a dense state, and the like. In particular, in a plant having a fast root growth or a long cultivation period, the root growth space may become dense due to the growth of the plant root. In this case, the rhizosphere environment in the early stage of cultivation, which is shortly after sowing and planting, and the rhizosphere environment in the late stage of cultivation, when the harvest season is approaching, are significantly different. Therefore, it is necessary to design a cultivation member in consideration of this.

  The present invention, even in an undeveloped rhizosphere environment in the early stage of cultivation, even in a rhizosphere environment in a dense state in the late stage of cultivation, a member for nutrient solution cultivation that enables appropriate supply of nutrient solution and oxygen, It is an object to provide a hydroponic cultivation method and a hydroponic cultivation system.

  The hydroponic cultivation member of the present invention (the first invention) comprises: a cultivation bed tub having a slope on a bottom surface; and a planting panel plate provided on the cultivation bed tub and having a plurality of planting holes formed therein. A seedling stand provided on the bottom surface of the cultivation bed tank below the planting hole, and watering for spraying a nutrient solution (water) such that the nutrient solution is applied to the roots of the plants on the seedling stand or the upper surface of the seedling stand. A nutrient solution cultivation member having a member, wherein a ventilation space is formed between a lower surface side of the seedling rack and a bottom surface of the cultivation bed tank, and a plant is disposed on the seedling rack. A recess is provided above.

  In one aspect of the present invention, the seedling rack extends in the longitudinal direction of the cultivation bed tank, and the recess of the seedling rack extends in the extending direction of the seedling rack.

  In one aspect of the present invention, a seedling pot of a plant is placed on the seedling stand.

  In one aspect of the present invention, the width of the recess is larger than the width of the bottom surface of the seedling pot.

  In one aspect of the present invention, an inclined surface for guiding at least a part of the nutrient solution sprinkled from the watering member and applied to the lower surface of the planting panel plate to the lower surface of the planting panel plate so as to be transmitted to the seedling rack side and flow. Is provided.

  The hydroponic cultivation member of the present invention (the second invention) comprises: a cultivation bed tub having a slope on a bottom surface; and a constant planting panel plate provided on the cultivation bed tub and having a plurality of planting holes formed therein. A seedling stand provided on the bottom surface of the cultivation bed tank below the planting hole, and a watering member for sprinkling the nutrient solution so that the nutrient solution is applied to the roots of the plants on the seedling stand or the upper surface of the seedling stand. A nutrient solution cultivation member in which a ventilation space is formed between a lower surface side of the seedling rack and a bottom surface of the cultivation bed tank, and a plant is arranged on the seedling rack; An inclined surface is provided to guide at least a part of the nutrient solution sprinkled from the sprinkling member and applied to the lower surface of the planting panel plate to the seedling rack side to flow.

  In one aspect of the present invention, a hydrophilic sheet is arranged so as to cover the seedling stand.

  In one aspect of the present invention, a hydrophilic sheet is arranged so as to cover the seedling rack, and the hydrophilic sheet is arranged along the concave shape.

  The nutrient solution cultivation method of the present invention is a nutrient solution cultivation method using the member for nutrient solution cultivation of the present invention, wherein a plant is disposed on the seedling stand through the planting hole, and the root of the plant or The plant is grown by spraying the nutrient solution onto the upper surface of the seedling stand directly or after hitting the planting panel.

  The nutrient solution cultivation system of the present invention includes a nutrient solution circulating mechanism having a tank, a pipe, and a pump, and the member for nutrient solution cultivation of the present invention.

  In the hydroponic cultivation member of the present invention (first invention), a concave portion is provided on a seedling stand. When the nutrient solution accumulates in the concave portions, the ability to supply the nutrient solution to the roots of the plant is enhanced. This can promote the survival of the plant roots.

  In the present invention (the second invention), the nutrient solution applied to the lower surface of the planting panel plate drops along the inclined surface of the lower surface of the planting panel plate onto the seedling stand. Can be increased. This can promote the survival of the plant roots.

  Moreover, the nutrient solution cultivation method and the nutrient solution cultivation system of the present invention can appropriately supply nutrient solution and oxygen to the plant from the early stage of cultivation to the late stage of cultivation by using the hydroponic cultivation member. Thereby, the yield of leafy vegetables and fruit vegetables can be improved.

  Furthermore, according to one aspect of the present invention, by performing watering from the watering member, it is possible to appropriately increase the humidity in the root growing space. Thereby, the humidity in the root growth space is maintained at a high level, and the cultivated plant is promoted to develop the root in the moisture, and the amount of oxygen taken in from the root can be increased.

It is a schematic sectional perspective view of the member for nutrient solution cultivation concerning an embodiment. It is sectional drawing of the member for nutrient solution cultivation which concerns on embodiment. It is a perspective view of a cultivation bed tank. It is a perspective view of a seedling stand. FIG. 5 is a sectional view taken along line VV of FIG. 4. It is sectional drawing of a seedling stand. It is a perspective view of a seedling stand. It is a perspective view of a seedling stand. It is a perspective view of a seedling stand. It is sectional drawing of a seedling stand. It is sectional drawing of a planting panel board. It is a top view of the nutrient solution cultivation system concerning an embodiment.

  Hereinafter, the present invention will be described in more detail, but the present invention is not limited to the following embodiments. Further, in the present invention, each term including “up” or “down”, such as “down”, “up”, “lower”, and “upper”, means a vertical direction in the vertical direction.

  In the present invention, the “nutrient solution” is not particularly limited as long as it is water used for plant cultivation. For example, it is preferably water containing any fertilizer component such as nitrogen, phosphorus, and potassium. In the present invention, the raw water means, for example, tap water, rainwater, well water, and the like. In the present invention, water may comprehensively mean nutrient solution and raw water.

  FIG. 1 is a sectional perspective view showing a member for nutriculture according to an embodiment of the present invention, and FIG. 2 is an enlarged sectional view thereof. 3 and 4 are perspective views of a cultivation bed tank and a seedling stand, and FIG. 5 is a cross-sectional view of the seedling stand.

  The hydroponic cultivation member 1 includes a cultivation bed tank 2 and a planting panel plate 3 made of foamed plastic such as styrene foam, a seedling mount 4, a waterproof sheet 5, a hydrophilic sheet 6, a watering member (watering tube). 7). Then, the plant (the seedling pot 9) is placed on the seedling stand 4. The materials such as the cultivation bed tank, the planting panel plate, and the seedling stand constituting the nutrient solution cultivation member 1 are not particularly limited, and have a strength enough to mount the plant. Any can be used.

  The plants placed on the seedling stand are plant seeds or plant seedlings. In the present invention, by providing a watering member for watering so that the nutrient solution is applied to the roots of the plant on the seedling stand or the upper surface of the seedling stand, seeds before germination and the early roots of the plant where the development area of the plant root is small are small. Water can be directly sprayed on the seedlings, and the nutrient solution can be reliably supplied to the plants. Therefore, the sprinkling member is to sprinkle water so that the nutrient solution is directly applied to the roots of the plants on the seedling stand or the upper surface of the seedling stand. Preferably, the watering member is to directly spray water to the roots of the plants on the seedling stand. is there. However, it is also possible that at least part of the nutrient solution hits the planting panel plate 3 and then hangs on the roots of the plants on the seedling stand or on the upper surface of the seedling stand. In addition, it is preferable that the plant arrange | positioned at a seedling stand is a seedling of the plant cultivated by a seedling raising apparatus etc., for example. According to this, the period for using the hydroponic cultivation member of the present invention, that is, the cultivation period in the hydroponic cultivation system of the present invention can be shortened. Therefore, the area of the cultivation field can be effectively used, the harvest period can be allocated for a long time throughout the year, and the yield can be increased in a limited field area.

  In the present invention, the watering member is not particularly limited, but is, for example, a watering tube. Further, in the present invention, the watering member is not particularly limited as long as it is in a root growing space surrounded by a cultivation bed tank and a planting panel board, and can be provided anywhere. The installation location of the watering member is, for example, on the seedling stand, the bottom of the cultivation bed tank, or the lower surface of the planting panel board, but it is difficult to prevent the root from growing from the seedling stand to the bottom of the cultivation bed tank. Therefore, it is preferable that the seedling stand is placed on the bottom surface of the cultivation bed tank without touching it.

  The form of the plant seedling is not particularly limited, but is, for example, a seedling pot. Seedling pots are those in which the roots of plants grown in individual pots or cell trays grow like a net so as to hold a medium. In a state where the roots are sufficiently grown and the medium is sufficiently held, even if the seedling is pulled out from the pot or the cell tray, the medium is protected by the root pot and the medium is hardly collapsed, and the seedling can be planted. In one embodiment of the present invention, it is preferable that the roots of the plant form a seedling pot. In this embodiment, the root survival greatly affects the productivity of the plant.

  In the present invention, the root of a plant includes the seed itself in the case of a seed before germination and rooting, and means somewhere in the whole root pot in the case of a seedling root pot.

  In the present invention, direct watering means that a nutrient solution is directly applied to a seedling stand, preferably somewhere in a seed or a seedling pot.

  As clearly shown in FIG. 3, in one embodiment of the present invention, the cultivation bed tub 2 has a long box shape extending in one direction with an open upper surface, and a pair of long side walls 2 a, 2 a and a bottom plate portion 2 b. And

  The intersection corner between the upper end surface and the inner side surface of the long side walls 2a, 2a is a cutout step 2d, and the side edge of the planting panel 3 is engaged with the step 2d.

  Seedling stand 4 is arranged at the center in the width direction (the center between long side walls 2a, 2a) of the upper surface of bottom plate 2b (the bottom of cultivation bed tank 2). On the upper surface of the bottom plate 2b between the seedling stand 4 and each of the long side walls 2a, 2a, a plurality of ridges 2t extend in the longitudinal direction of the cultivation bed tank 2 respectively. In FIG. 1, illustration of the ridge 2t is omitted.

  In this embodiment, a total of six ridges 2t are provided, three on each side of the seedling gantry 4. In the present invention, the ridges 2t are not necessarily required. However, when the ridges 2t are formed, the number of the ridges 2t is preferably, for example, one or more on at least one side of the seedling rack 4 and at least one on each side. It is more preferable to provide three or more lines, and particularly preferable to provide three or more lines. It is more preferable to provide the same number of the protruding strips 2t on both sides of the seedling stand 4, for example, two or more strips on both sides of the seedling stand 4, a total of four or more strips, and a total of four or more strips. Each can be a total of 6 or more. The number of the ridges 2t can be appropriately set according to the width dimension of the bottom plate 2b.

  2 and 3, the side surface of the ridge 2t is inclined with respect to the lower surface of the ridge. The side surface of the ridge 2t may be vertical or inclined with respect to the bottom of the cultivation bed tank without being inclined. When the side surface of the ridge 2t is inclined, the side surface of the ridge is preferably inclined such that the upper surface of the ridge is smaller than the lower surface, and the inclination angle is preferably 20 degrees or more, and more preferably 30 degrees or more. Is more preferable. Further, the inclination angle is preferably equal to or less than 80 degrees, and more preferably equal to or less than 60 degrees. By inclining the side surface of the ridge 2t and setting the angle of inclination to the above range, the adhesion between the ridge and the hydrophilic sheet is improved, and bubbles are generated between the ridge and the hydrophilic sheet. This is preferable because it can be prevented.

  The ridge 2t has a function of positioning the watering tube 7 and preventing rolling, and also has a function of guiding a nutrient solution flowing on the bottom plate 2b. The height of the ridge 2t from the bottom plate 2b is 0 mm or more, preferably 1.0 mm or more, and more preferably 3.0 mm or more. The height of the ridge 2t from the bottom plate portion 2b is preferably 10 mm or less, more preferably less than 10 mm, and particularly preferably 8.0 mm or less.

  When a plurality of ridges 2t (for example, three in FIG. 3) are provided on one side of the seedling mount 4, the interval between the ridges 2t is preferably 10 mm or more, and more preferably 20 mm or more. The interval between the ridges 2t is preferably 50 mm or less, and more preferably 30 mm or less. When the side surface of the ridge 2t is inclined as shown in FIGS. The interval between the ridges 2t means the interval at the bottom of the ridge 2t.

  The gap between the seedling stand 4 and the ridge 2t closest to the seedling stand 4 is preferably small, and is preferably 10 mm or less, and more preferably 7 mm or less per side of the seedling stand. On the other hand, the width of the gap between the seedling rack 4 and the ridge 2t closest to the seedling rack 4 is preferably more than 0 mm on one side, more preferably 1 mm or more. With such a range, communication of the nutrient solution and air between the ventilation space T and the root growth space S becomes smooth, and the seedling stand 4 can be easily installed at an appropriate position on the bottom of the cultivation bed tank. Becomes The ventilation space T is a space through which air circulates, while allowing the nutrient solution to flow down. In particular, in the root growth space S, as the roots develop and the water depth increases, the amount of nutrient solution flowing into the ventilation space T increases. As a result, an air layer (moisture space) can be secured above the root growth space, and it becomes easy for plants to develop wet roots and absorb oxygen.

  Note that, in one aspect of the present embodiment, the cultivation bed tub 2 is not provided with a gradient on the upper surface of the bottom plate portion 2b (the bottom surface of the cultivation bed tub 2), and the cultivation bed tub 2 is provided with a gradient. It has a form. This gradient is preferably a running water gradient from one end to the other end in the longitudinal direction, and is, for example, about 1/50 to 1/200. In another aspect of the present embodiment, the upper surface of the bottom plate portion 2b (the bottom surface of the cultivation bed tub 2) may have a gradient, and the cultivation bed tub 2 may be installed horizontally.

  The length in the longitudinal direction of the cultivation bed tank 2 and the planting panel plate 3 is not limited, but is preferably, for example, 5.0 m or more, more preferably 10 m or more. The length is preferably 50 m or less, more preferably 30 m or less. Furthermore, the width of the cultivation bed tank 2 and the planting panel 3 is preferably 0.1 m or more, more preferably 0.3 m or more. Further, the width is preferably 2.0 m or less, more preferably 1.0 m or less.

  In the present invention, the planting panel board is arranged on the cultivation bed tank, and a plurality of planting holes are provided at intervals in the longitudinal direction. In one aspect of the present embodiment, the planting panel plate 3 is provided with a plurality of planting holes 3a in a row at intervals in the longitudinal direction. The interval between the planting holes 3a can be appropriately designed depending on the type of plant to be cultivated, and is not limited. For example, the interval is 200 mm or more and 800 mm or less, and particularly preferably 400 mm or more and 600 mm or less. The planting hole 3 a is located above the seedling stand 4. In the illustrated embodiment, only one seedling stand 4 is provided and the row of planting holes 3a is also one row. However, a plurality of seedling stands 4 are provided in parallel, and a plurality of rows of planting holes 3a are provided. Is also good.

  Further, the shape of the planting hole 3a may be a prismatic shape or any other shape in addition to a cylindrical shape as shown in the figure. In the present invention, when the seedling pot to be used is cylindrical, the planting hole is also preferably cylindrical. When the seedling pot is prismatic, the planting hole is also preferably prismatic. Thus, by making the planar shape of the seedling pot and the planar shape of the planting hole the same, the gap between the seedling pot and the seedling pot in the planting hole can be reduced, and the spouting of the sprinkled nutrient solution can be suppressed. be able to. Furthermore, it is possible to suppress occurrence of algae by hitting the cultivated plant or dropping the liquid on the planting panel plate. The shape of the planting hole 3a is preferably slightly larger (for example, about 1 mm to 2 mm) than the shape of the seedling pot. Thereby, it is possible to easily plant a seedling in the center of the concave portion of the seedling stand.

  In this embodiment, the lower surface near the center in the width direction of the planting panel 3 is an inclined surface 3f having a downward slope toward the center in the width direction. By providing the inclined surface 3f, the nutrient solution released from the sprinkling member 7 and applied to the lower surface of the planting panel plate 3 travels along the inclined surface 3f and collects at the center of the planting panel plate 3 in the width direction. Since the solution is dropped onto the seedling stand 4, the ability to supply nutrient solution to the roots of the plant can be increased. This can promote the survival of the plant roots.

  In this embodiment, the inclined surface 3f is provided only in the vicinity of the center of the planted panel plate 3 in the width direction. However, the inclined surface 3f may be provided on the entire lower surface of the planted panel plate 3. In addition, as in the case of the planting panel board 3A in FIG. 11, the vicinity of the center in the width direction is an inclined surface 3f having a downward slope toward the center in the width direction, and the rest is a downward slope toward the side of the planting panel board 3A. The inclined surface may be 3g. Other configurations of the planting panel board 3A are the same as those of the planting panel board 3, and the same reference numerals indicate the same parts.

  The waterproof sheet 5 is provided so as to cover the upper end surface and the inner side surface of the long side walls 2a, 2a of the cultivation bed tank 2 and the upper surface of the bottom plate 2b.

  In the present invention, the waterproof sheet 5 may be further folded back beyond the upper end face of the long side wall of the cultivation bed tank so as to cover the top surface from the side end face of the planting panel board 3. By covering the planting panel plate 3 with the waterproof sheet 5 in this way, it is possible to reduce the incidence of light on the root growing space S and prevent the occurrence of algae. In this case, it is preferable that the waterproof sheet has a light shielding function. Furthermore, when the waterproof sheet 5 is made of a material having light reflectivity, an insect repellent effect can be obtained by covering the planted panel board with the waterproof sheet.

  A seedling stand 4 is provided at the center between the long side walls 2a, 2a so as to extend in the longitudinal direction of the cultivation bed tank 2. In the embodiment of FIGS. 1 to 5, the seedling mount 4 has a zenith 4c and legs 4d on both sides of the zenith 4c. A plurality of openings 4b are provided in each leg 4d at intervals in the longitudinal direction.

  A recess 4m is provided on the upper surface of the zenith 4c of the seedling stand 4. In this embodiment, the recess 4m is a recess (groove) extending in the longitudinal direction of the seedling stand 4. The bottom surface of the concave portion 4m is a flat surface at a predetermined depth lower than the bank-shaped convex portions 4t on both sides of the concave portion 4m.

  By providing the concave portion 4m, the nutrient solution is stored in the concave portion 4m, and the ability to supply the nutrient solution to the root of the plant is increased, so that the root of the plant can be promoted. In the present invention, the shape of the recess formed on the upper surface of the zenith of the seedling mount is not particularly limited as long as the nutrient solution is stored. In another embodiment of the recess in the present invention, for example, one recess may be formed for one plant.

  The width of the recess 4m is preferably larger than the width of the bottom of the seedling pot used. Specifically, the width of the concave portion 4m is more preferably 1 mm or more than the width of the seedling pot bottom used, and particularly preferably 5 mm or more than the width of the seedling pot bottom used. Further, the width of the concave portion 4m is preferably smaller than the width obtained by adding 50 mm to the width of the bottom of the seedling pot used, and more preferably smaller than the width obtained by adding 45 mm to the width of the bottom of the seedling pot used. It is particularly preferable that the width be smaller than the width obtained by adding 40 mm to the width of the bottom surface. By setting the width of the concave portion on the seedling rack in such a range, the seedling pot can be stored in a stable posture in the concave portion on the seedling rack. This prevents seedling falling (tilting of the seedling), and the seedling is easily maintained in an upright posture, so that the root survival rate of the seedling can be increased or the time required for root survival can be shortened. Further, the bottom surface in the concave portion on the seedling stand is preferably flat.

  In addition, the width of the seedling pot bottom means the diameter of the seedling pot bottom when the seedling pot to be used is circular. Further, when the seedling pot to be used is not circular (for example, square, rectangular, diamond-shaped, or the like), it means the length of one side of the bottom surface of the seedling pot in the largest direction. In one aspect of the present invention, as described above, the width of the concave portion on the seedling stand is larger than the width of the bottom surface of the seedling pot to be used, so that the seedling pot is stored in the concave portion on the seedling stand. Can be. Thereby, the lower end portion of the seedling pot is immersed in the nutrient solution stored in the recess 4m, and the nutrient solution is efficiently absorbed by the plant.

  In the above description, the concave portion 4m has a groove shape extending continuously in the longitudinal direction of the seedling rack 4, but may have a concave shape that is not continuous in the longitudinal direction.

  In the seedling stand 4 of FIGS. 4 and 5, the concave portion 4m is formed to be recessed from the zenith portion 4c. However, as in the seedling stand 4A of FIG. The shape may be such that a recess 4m is formed between 4t and 4t.

  The depth of the recess 4m formed on the seedling stand is preferably 1 mm or more, more preferably 2 mm or more, and particularly preferably 3 mm or more. By setting the depth of the concave portion 4m in such a range, it is easy to obtain the effect of preventing the seedling from falling (the seedling is tilted) and maintaining the upright posture of the seedling. Further, the depth of the recess 4m is preferably 25 mm or less, more preferably 20 mm or less, and particularly preferably 15 mm or less. By setting the depth of the concave portion 4m in such a range, the roots of the plant elongate and easily reach the water film under the seedling stand. Thereby, nutrient solution absorption from underwater roots can be promoted, and the productivity of plants can be increased.

  In the above embodiment, the seedling stand is configured to accommodate the lower part of the seedling pot in the recess 4m, but as shown in FIG. 7, a seedling having a narrow groove-shaped recess 4m provided in the zenith 4c. The gantry 4B may be used. In this case, the seedling pot is arranged such that the bottom surface thereof is seated on the convex portion 4t along the concave portion 4m. The nutrient solution is efficiently absorbed by the plant by extending the root of the seedling pot into the recess 4m.

  In FIG. 7, two concave portions 4m are shown, but one or three or more concave portions may be provided.

  The seedling stand 4 has a shape having a space inside to form a ventilation space in a root growing space. In the present invention, since the ventilation space T is provided between the lower surface side of the seedling stand and the bottom surface of the cultivation bed tank, a ventilation space is formed below the root growth space. Thereby, oxygen is effectively supplied to the lower part (root group development layer) of the remarkably growing root, and the growth of the plant is promoted.

  The seedling stand 4 is preferably provided with an opening 4b. According to this, the nutrient solution and oxygen can be easily transmitted through the root growth space S and the ventilation space T. Therefore, the material of the seedling rack is not particularly limited, but is preferably a hard member such as plastic provided with a large number of openings.

  The interval (arrangement pitch) between the openings 4b formed in the seedling stand is not limited, but is preferably smaller than the arrangement pitch of the planting holes 3a. Specifically, the arrangement pitch of the openings of the seedling mount is preferably 200 mm or less, and particularly preferably 100 mm or less. Thereby, the number of openings 4b of the seedling stand per plant can be ensured, the nutrient solution and oxygen can easily pass through the root growth space S and the ventilation space T, and the nutrients and oxygen can be more reliably supplied to the plant roots. It becomes possible to supply. Therefore, the numerical aperture of the seedling gantry per plant is preferably 4 or more, more preferably 8 or more. Alternatively, the arrangement pitch of the openings of the seedling stand is preferably 50% or less, more preferably 30% or less, of the arrangement interval of the planting holes.

  In the present invention, it is preferable to set the arrangement pitch of the openings of the seedling stand so that the seedling stand is not flooded. Thereby, even in the latter stage of cultivation where the roots of the plant develop and the water depth increases, a moisture space (oxygen supply area) is secured in the root growing space, and the development of the moisture middle root and the absorption of oxygen in the plant can be performed. .

  In addition, the space | interval of the opening 4b means the space | interval of the opening formed in the leg part of one side of a seedling stand. However, the numerical aperture of the seedling rack per one plant is the numerical aperture formed on the legs on both sides of the seedling rack.

  In the seedling gantry 4, the openings 4b are provided in one leg 4d in a zigzag shape in the longitudinal direction of the seedling gantry 4, but may be arranged in a straight line as in a seedling gantry 4C shown in FIG. The openings 4b are preferably formed in the legs on both sides of the seedling rack.

  The shape of the opening 4b is not particularly limited as long as it allows the nutrient solution and air to pass through, and may be, for example, a circular shape, an elliptical shape, or a slit shape. Further, the position (height) of the opening 4b is not particularly limited, but is preferably set at a height of 5 to 50 mm, particularly 5 to 40 mm, particularly 5 to 30 mm from the lower edge of the leg 4d.

  The seedling gantry may have a cross-sectional shape such as a trapezoid in which the legs 4d and 4d have a flat plate shape, like the seedling gantry 4E in FIG. The leg 4d may be provided at right angles to the zenith 4c.

  The seedling stand 4 is placed above the waterproof sheet 5 after laying the waterproof sheet 5. A communication portion through which nutrient solution and air pass is formed between the lower edge of the leg 4d and the waterproof sheet 5 below the leg 4d due to bending of the seedling mount 4 and wrinkling of the waterproof sheet 5. . In order to increase the size of the communication portion, a communication portion 4k formed of a notch may be provided at the lower end edge of the leg portion 4d, as in the seedling stand 4D in FIG. Further, a spacer may be arranged, or a projection may be provided below the leg 4d. The internal space surrounded by the seedling stand 4 is a ventilation space T.

The height of the seedling stand 4 is not particularly limited, and height H ₂ of the space between the bottom plate portion 2b and the planting panel plate 3 of cultivation bed vessel 2, be set as appropriate by the plants cultivated Can be. The height _{H 1} from the top portion to the bottom surface of the planting panel plate 3 seedlings gantry 4 is 20 to 100 mm, especially about 20~80mm are preferred.

  The width of the bottom of the seedling rack 4 is not particularly limited, but is, for example, preferably 10% or more of the width of the cultivation bed tank, and more preferably 15% or more. Further, the width is preferably 50% or less of the width of the cultivation bed tank, and more preferably 40% or less. According to this, both the root growing space S and the ventilation space T can be appropriately secured. Therefore, the width of the seedling mount 4 is, for example, preferably 30 mm or more, and more preferably 50 mm or more. Further, the value of the width is preferably 500 mm or less, and more preferably 300 mm or less. Here, the “width of the bottom of the seedling rack” means the distance between the lower ends of the legs 4d of the seedling rack.

Height H ₂ of between the bottom plate portion 2b of the cultivation bed vessel 2 and the planting panel plate 3, type of the plant to be cultivated, can be appropriately set by the duration of cultivation, considering the cost of the productivity and material Then, it is preferable to set it to about 50 mm to 150 mm.

  In one embodiment of the present invention, it is preferable that a hydrophilic sheet is disposed so as to cover the upper surface of the seedling rack 4. Thereby, the nutrient solution directly sprinkled on the upper surface of the seedling stand can increase the water content of the hydrophilic sheet, thereby promoting the supply of the nutrient solution to the roots of the plant. The hydrophilic sheet is not particularly limited as long as it has a water-containing function and can pump up liquid by capillary action, and any of them can be used. It is more preferable that the material has a function of transmitting air or a material that does not allow roots to pass through. Examples of the hydrophilic sheet include a nonwoven fabric, a woven fabric, and paper, and a hydrophilic nonwoven fabric is particularly preferable.

  Moreover, in one aspect of the present invention, it is preferable that a root shielding sheet is disposed so as to cover the upper surface of the seedling stand 4. It is preferable that the root shield sheet is further provided so as to cover the upper end surface and the inner side surface of the long side walls 2 a, 2 a of the cultivation bed tank 2, the upper surface of the bottom plate portion 2 b, and the upper surface of the seedling stand 4. As described above, in one embodiment of the present invention, by providing the root shielding sheet so as to cover the upper surface of the seedling rack, it is possible to prevent plant roots from entering the lower surface of the seedling rack and supply oxygen to the root from the lower surface. It becomes easy to secure the ventilation space.

  In one embodiment of the present invention, a hydrophilic sheet having a root-shielding function can be used as the hydrophilic sheet. Alternatively, a root shielding sheet can be used separately from the hydrophilic sheet. When the hydrophilic sheet and the root shield sheet are used in an overlapping manner, it is preferable to dispose the root shield sheet on the hydrophilic sheet.

  In one embodiment of the present invention, the root-shielding sheet, the hydrophilic root-shielding sheet, or the hydrophilic sheet is arranged along the concave shape on the seedling stand as shown as the hydrophilic sheet (6) in FIG. Preferably.

  The hydrophilic sheet 6 may be provided with an identification portion indicating the center position in the width direction. When the hydrophilic sheet 6 is laid on the cultivation bed tub 2, the work efficiency of laying the hydrophilic sheet 6 is improved by arranging the identification portion at the center between the long side walls 2a.

  In this embodiment, it is preferable that the watering tubes 7 are provided on both sides of the seedling stand 4. Further, it is preferable that the watering tube is installed above the hydrophilic sheet 6. Further, in one embodiment of the present invention, as shown in FIG. 2, the watering tube 7 has watering holes 7a and 7b for discharging nutrient solution obliquely upward. In this embodiment, the sprinkling hole 7a is provided so as to discharge the nutrient solution obliquely upward and to the right, and the sprinkling hole 7b is provided so as to discharge the nutrient solution and obliquely upward and to the left. By providing the water sprinkling holes 7a and 7b so as to discharge the nutrient solution in opposite directions, the water sprinkling tube 7 is prevented from rotating due to the reaction force of the water discharged from the water sprinkling holes 7a and 7b.

  In this embodiment, as described above, a plurality of ridges 2t are provided on the upper surface of the bottom plate 2b, and the watering tube 7 is arranged in a state of fitting in the groove-like portion between the ridges 2t. ing. As a result, the watering tube 7 is installed in a state of being positioned in parallel with the seedling stand 4, and rotation and displacement are prevented by the released water pressure and external vibration.

  The watering holes 7a and 7b of the watering tube 7 on the left side and the watering hole 7b of the watering tube 7 on the right side of FIG. The direction is set, and the inner diameters of the watering holes 7a and 7b and the nutrient solution supply pressure to the watering tube 7 are set.

  Since the watering tube 7 is provided with the watering holes 7a and 7b, even when the watering tube 7 is arranged on either the left or right side of the seedling rack 4, the watering hole 7a or 7b is placed on the seedling rack 4 from one of the watering holes 7a and 7b. Nutrient solution can be applied to the seedling pot 9 or the zenith 4a.

  In one aspect of the present invention, the watering tube preferably extends in a direction parallel to the seedling stand. The arrangement pitch of the watering holes 7a, 7b of the watering tube 7 (the interval between the watering holes 7a, 7a and the distance between the watering holes 7b, 7b in the longitudinal direction) is arranged at the pitch of the planting holes 3a (that is, the arrangement pitch of the seedling pots 9). Is preferably smaller than the above. The arrangement interval of the watering holes 7a and 7b is not limited, but is preferably 30% or less, more preferably 20% or less, particularly preferably 10% or less of the arrangement interval of the planting holes 3a. preferable. This makes it easier for watering to be applied to the roots of the plants, and can improve the development of the roots of the plants (particularly, of the seedlings). Similarly, the arrangement interval of the watering holes 7a and 7b is preferably less than 50 mm, more preferably 40 mm or less, and even more preferably 30 mm or less.

  The watering tube 7 is not particularly limited, but, for example, the inside of the tubular body is divided by a partition wall to form two flow paths, and a part of the tubular body of the watering tube is made of nonwoven fabric. It is preferable to use one that is used.

  In the present invention, in particular, two flow paths (A) and (B) are formed, and a cylindrical portion and a partition wall of the flow path (A) that come into contact with the outside air are formed of a film. B) The portion of the cylindrical body which is in contact with the outside air is made of non-woven fabric, and the partition wall is provided with a water passage hole, and water is passed to the flow path (A) through the pipe of the inlet joint. It is preferable to use a watering tube which is formed so that does not come into contact with the nonwoven fabric of the flow path (B). According to this, water can be sprayed more uniformly in the longitudinal direction of the water spray tube. The watering tube may be any of a watering type, a mist type, a root type, a drip type, and the like. From the viewpoint of improving the humidity of the space, it is preferable to use a watering type watering tube.

  In the present invention, when the watering tube is placed on the bottom surface of the cultivation bed tank, the watering tube preferably has a distance (M: gap distance between the watering tube and the seedling mounting) of 50 mm or less. , 30 mm or less. According to this, the amount of nutrient solution that is directly sprinkled on the roots of the plants on the seedling stand or the upper surface of the seedling stand is secured, and in the root development region in the initial stage of cultivation, the nutrient solution is reliably supplied, and the root development is performed. Can be improved.

  A plurality of the nutrient solution cultivation members 1 configured as described above are connected to form a cultivation bed tank row 10 (FIG. 12) having a length of 10 to 100 m. The waterproof sheet 5 is continuously laid across the cultivation bed tanks 2. Thereby, water leakage from the joining surface of the cultivation bed tanks 2 is prevented.

  In one embodiment of the present invention, the seedling pot 9 is placed on the seedling stand 4 through the planting holes 3 a of the planting panel 3 covered on each cultivation bed tub 2, and is grown on the bottom surface 2 b of the cultivation bed tub 2. The liquid is caused to flow to form a water channel (having a water flowing mechanism), and the nutrient solution is applied to the seedling pot 9 and the top of the zenith 4c from the watering tube 7. That is, one embodiment of the present invention has two nutrient solution water supply systems, a flowing water mechanism and a watering mechanism. Thereby, in the early stage of cultivation, the water can be effectively supplied to the seedling pot 9 by the watering mechanism. In addition, from the middle stage of cultivation to the late stage of cultivation, the water can be effectively supplied to the entire widened root zone by the water flow mechanism. In addition, the flowing water mechanism means a flowing water channel formed from upstream to downstream in the longitudinal direction of the cultivation bed tank. Furthermore, the running water mechanism is preferably a thin film hydroponic cultivation mechanism. At least a part of the nutrient solution released from the watering tube 7 and applied to the lower surface of the planting panel plate 3 flows toward the center in the width direction of the planting panel plate 3 along the inclined surface 3f, and the seedling stand 4 (4A) 4E) or on the seedling pot 9 thereon.

  The plants are grown by supplying the nutrient solution in this manner. As a result, the root 9r (FIG. 2) extends from the seedling pot 9 to the root growing space S surrounded by the long sides 2a, 2a, the bottom plate portion 2b, the planting table 4, and the planting panel plate 3.

  Preferably, a sufficient amount of nutrient solution is sprinkled so that the nutrient solution overflows from the recess 4m.

  In the nutrient solution cultivation member of the present invention, it is preferable to have a water channel from upstream to downstream in the longitudinal direction of the cultivation bed tank. The flowing water channel is formed by, for example, a gradient formed on the bottom surface of the cultivation bed tub starting from a liquid supply pipe installed upstream in the longitudinal direction of the cultivation bed tub. Thereby, the supply of the nutrient solution to the underwater root of the plant can be performed by the watering member or the flowing water channel. Furthermore, the hydroponic cultivation member of the present invention is preferably a thin-film hydroponic cultivation member. Thin-film hydroponics has both a nutrient solution layer and an air layer in the root growth space. Thereby, a water film is formed on the bottom plate portion 2b of the cultivation bed tank in the root growing space. Above this water film is an air layer, which is capable of supplying oxygen to the roots of moisture. Below the water film is a layer of nutrient solution, which can supply nutrients and water to the underwater roots. Note that in one embodiment of the present invention, the nutrient solution cultivation member is preferably a nutrient solution circulating type.

  In one embodiment of the present invention, it is preferable that the water channel is provided on both sides of the seedling stand. That is, the seedling stand is preferably provided substantially at the center in the short direction of the cultivation bed tank. In addition, it is preferable that a water film-like flowing water channel is formed on both sides of the seedling stand in the bottom plate portion 2b on the bottom of the cultivation bed tank. More specifically, it is preferable that the discharge port of the liquid supply pipe is installed toward both sides of the seedling rack so as to have a water channel on both sides of the seedling rack. Thereby, the underwater root of the plant elongates more quickly, reaches the water film below the seedling mount, and can absorb the nutrient solution.

  There is a submerged hydroponic (DFT) as an opposite concept of the thin film hydroponic. Submerged hydroponics is a method of soaking roots in nutrient solution. That is, there is no moisture space in the root growing space. Therefore, the supply of oxygen to the roots in submerged hydroponics depends on absorbing dissolved oxygen in the nutrient solution. In the present invention, the thin-film hydroponic has a moisture space in a root growth space regardless of the water depth.

  In one aspect of the present invention, it is preferable that the watering members are provided on both sides of the seedling mount. According to this, it is possible to appropriately maintain the humidity and the water temperature in the root growing space.

  At the beginning of growth, the root 9r is short, and the plant absorbs the nutrient solution from the nutrient solution poured from the watering tube 7 and the nutrient solution stored in the recess 4m. In this embodiment, the seedling stand 4 is provided with the concave portion 4m, and a part of the nutrient solution is retained in the concave portion 4m, so that the retained liquid is efficiently absorbed by the roots of the plant.

  When the roots of the plant gradually extend and reach the water film on the bottom plate 2b, the nutrient solution is absorbed from the water film.

  By using the seedling stand 4 or 4A to 4E, it is possible to form the ventilation space T in the root growth space S between the cultivation bed tank 2 and the planting panel plate 3, and particularly, in the latter stage of cultivation, The supply of oxygen to the roots of rice can be effectively performed. Moreover, since the seedling mortar 9 is not washed by the flow of the nutrient solution by using the seedling gantry 4 or 4A to 4E, the medium in the seedling mortar 9 is prevented from collapsing or flowing out.

  By arranging the seedling stands 4, 4A to 4E and the hydrophilic sheet 6 and providing the ridges 2t, the flow of the nutrient solution flowing through the bottom plate portion 2b of the cultivation bed tank 2 depends on the root growth of the plant to be cultivated. It is possible to suppress the inhibition and the retention of the nutrient solution.

  In addition, the liquid on the hydrophilic sheets 6 on both sides of the seedling racks 4, 4A to 4E passes through the communicating portions between the seedling racks 4, 4A to 4E and the hydrophilic sheet 6, and the liquid in the seedling racks 4, 4A to 4E. And flows down through the ventilation space T in the seedling stand 4. In this way, the retention of the nutrient solution can be suppressed, the roots of the plant to be cultivated are prevented from being submerged in the nutrient solution, and oxygen deficiency is suppressed. It becomes possible to supply.

  In addition, oxygen (air) in the ventilation space T is grown from the ventilation space T through the communicating portion, the opening 4b, and the hydrophilic sheet 6 to the root group development layer of the roots, which is grown in the root growth space S and is dense. , And can be supplied efficiently.

  According to the nutrient solution cultivation method of the present invention, a root having two different forms and functions, that is, an underwater root that grows mainly in water and has few branches and a moist root that has many root hairs and is maintained in moisture. Can grow. Submerged roots mainly absorb fertilizer and water in nutrient solution, and moist roots mainly absorb oxygen directly from the moisture.

  In addition, according to the watering tube, a uniform nutrient solution in the longitudinal direction, specifically, a nutrient solution having a uniform nutrient concentration and water temperature can be supplied to the plant. It is easy to unify the growth rate and stabilize the yield of leafy vegetables and fruits and vegetables. Furthermore, in the nutrient solution cultivation method of the present invention, it is preferable that the water temperature of the nutrient solution is controlled to an appropriate temperature to perform watering for 24 hours. According to this, even if the temperature around the cultivation apparatus changes greatly, the rhizosphere temperature (the temperature of the root growing space) can be maintained in an appropriate range. The supply of the nutrient solution by the watering tube can be stopped only at the beginning of cultivation and stopped when the root reaches the bottom of the cultivation bed. However, as described above, the root of the plant develops and reaches the bottom of the cultivation bed because it can supply a uniform nutrient solution in the longitudinal direction and can suppress the influence on the rhizosphere temperature due to changes in the surrounding temperature. After that, it is preferable that the supply of the nutrient solution by the watering tube is continued.

  The thin-film hydroponic method adopted in this embodiment can reliably secure a space for growing submerged roots while maintaining a humid space, and can reliably take in nutrients and water from the submerged roots. Furthermore, since the supply of the nutrient solution is of a flow type, contamination of water quality (such as propagation of microorganisms) is unlikely to occur, and stable cultivation can be realized. In addition, it is preferable that the nutrient solution cultivation member of the present invention has a control device for the nutrient solution temperature. Specifically, a temperature adjusting mechanism may be added around the water supply pipe or in the tank. In the nutrient solution cultivation method of the present invention, it is preferable to control the supply temperature of the nutrient solution. According to this, by controlling the temperature of the nutrient solution supplied to the root growth space at an appropriate temperature, the rhizosphere temperature is appropriately maintained, and root growth is promoted. The supply temperature of the nutrient solution is appropriately set depending on the weather, the season, and the type of the plant, and is not limited. For example, the temperature is preferably from 10 ° C to 30 ° C, more preferably from 15 ° C to 25 ° C, and particularly preferably. 18 ° C. or higher and 23 ° C. or lower.

  The root group of plants grown by the hydroponic method of the present invention is a root group having three regions: a region occupied by a large number of underwater roots, a region occupied by a large amount of moisture roots, and a region in which the water roots and the moisture roots are mixed. It can be. Furthermore, by efficiently supplying oxygen to a region where underwater roots and moisture roots coexist and a region occupied by a large amount of underwater roots, it is possible to suppress the lack of dissolved oxygen even in a dense rooted state, And the yield of fruits and vegetables can be increased.

  INDUSTRIAL APPLICABILITY The member for hydroponics of the present invention forms a moisture space in a root growing space, and is particularly suitable for thin film hydroponics (hereinafter also referred to as "NFT") in which oxygen can be easily supplied to the root.

  In addition, the present invention is preferably used for cultivation of fruits and vegetables having many roots, more preferably used for cultivation of Cucurbitaceae plants, and still more preferably used for cultivation of cucumber.

  In the above embodiment, the watering tube is arranged on the cultivation bed tank 2, but the present invention is not limited to this. For example, a watering tube may be suspended from a planting panel board.

  In the above embodiment, the ridge 2t is provided in the cultivation bed tank 2, but a ridge other than the ridge may be provided.

  In the embodiment of FIGS. 1 to 5, both the configuration in which the inclined surface 3f is provided in the planting panel plate 3 or 3A and the configuration in which the concave portion 4m is provided in the seedling stands 4, 4A to 4F are adopted. Then, only one of the configurations may be provided.

  By arranging a nutrient solution circulating mechanism having a tank, a pipe, a pump, and the like on the nutrient solution cultivation member of the present invention, a nutrient solution cultivation system can be obtained. FIG. 12 is a plan view showing an example of the nutriculture system according to the embodiment of the present invention.

  In FIG. 12, a plurality of cultivation bed tubs 2 are connected in series in a house to form a cultivation bed tub row 10, and the cultivation bed tub rows 10 are arranged in a plurality of rows (four rows in the drawing) to form a cultivation bed tub group. 20. In addition, in one cultivation bed tub row 10, a plurality of cultivation bed tubs 2 are arranged in series, and a waterproof sheet 5 is spread over each cultivation bed tub 2. This prevents water leakage from the joint surface between the cultivation bed tubs 2. The number of the cultivation bed tubs 2 constituting one cultivation bed tub row 10 is about 5 to 100, but is not limited thereto.

  Each cultivation bed tank row 10 is preferably installed at a gradient of about 1/50 to 1/200 so as to have a running water gradient from one end to the other end in the longitudinal direction. Thereby, the nutrient solution cultivation member of the present invention has a flowing water channel from upstream to downstream in the longitudinal direction of the cultivation bed tank. As described above, the nutrient solution cultivation member and the nutrient solution cultivation system of the present invention employ a thin-film hydroponic system in the supply and circulation of the nutrient solution, thereby easily securing an oxygen supply area in the root growing space, It is preferable because oxygen is easily absorbed by the roots of the plant. That is, in the nutrient solution cultivation method of the present invention, it is preferable to set a gradient from one end in the longitudinal direction to the other end in the cultivation bed tank so that the seedling stand is not flooded. Thereby, even in the latter stage of cultivation where the roots of the plant develop and the water depth increases, a moisture space (oxygen supply area) is secured in the root growing space, and the development of the moisture middle root and the absorption of oxygen in the plant can be performed. .

  One tank 33 is attached to one cultivation bed tank group 20. The nutrient solution cultivation system includes a tank 33 for storing a circulating nutrient solution, and the nutrient solution in the tank 33 is supplied to each cultivation bed tank row 10 via a pump 34, a pipe 35, and a valve 36. The tank 33 is provided with a system for supplying water for replenishing the amount of water corresponding to the amount of nutrient solution absorbed by the plant. The system for supplying water preferably has a raw water tank (not shown) for supplying the water, a supply control valve 25a, and a pipe 25, and is preferably a system that constantly supplies water. In the tank 33, it is more preferable that the amount of flowing water into the tank 33 is controlled by the ball tap 31 which is a float valve so that the amount of stored nutrient solution is always constant.

  It is preferable that the hydroponic cultivation system of the present invention is provided with a system for supplying liquid fertilizer. The system for supplying liquid fertilizer has a tank (not shown) for storing concentrated liquid fertilizer, a supply control valve 24a for supplying the liquid fertilizer, and a pipe 24. The total fertilizer concentration (EC) of the circulating nutrient solution is reduced by constantly supplied water. Therefore, it is preferable that the nutrient solution cultivation system of the present invention is equipped with a sensor unit for measuring an EC value, for example, in a tank. It is preferable to control the total fertilizer concentration at all times. When the EC of the nutrient solution in the tank falls below a certain value, the concentrated liquid fertilizer is supplied. In the system for supplying liquid fertilizer of the hydroponic cultivation system of the present invention, liquid fertilizer is preferably supplied from two tanks storing two or more concentrated liquid fertilizers.

  In the present invention, it is preferable to maintain the pH of water (nutrient solution) supplied to the plant within a certain range. For example, when the pH rises above a specific value, an acid or the like is replenished, and when the pH falls below a certain value, an alkali or the like is replenished, so that the pH value can be suitably maintained. In the present invention, a sensor for measuring the pH of circulating water (nutrient solution) may be provided. According to this, it is also possible to control the pH of the nutrient solution within a certain range.

  Water (nutrient solution) is supplied from a tank storing this water (nutrient solution) to each cultivation bed tank row via a pump, piping, and a valve, and water (not absorbed) from the end portion of each cultivation bed tank row ( The nutrient solution is returned to the tank.

While the present invention has been described in detail with particular embodiments, it will be apparent to those skilled in the art that various modifications can be made without departing from the spirit and scope of the invention.
This application is based on Japanese Patent Application No. 2018-164638 filed on Sep. 3, 2018, which is incorporated by reference in its entirety. Further, the term "seedling stand" in the present application means the term "plant mounting stand" in Japanese Patent Application No. 2018-164638, and can be replaced.

S Root growth space T Ventilation space M Distance between watering member (watering tube) and seedling stand 1 Hydroponic cultivation member 2 Cultivation bed tank 2b Bottom plate 2t Protrusions 3,3A Planting panel 3a Planting hole 4,4A- 4E Seedling stand 4b Opening 4c Zenith 4d Leg 4k Communication part 4m Depression 4t Convex part 5 Waterproof sheet 6 Hydrophilic sheet 7 Watering tube 7a, 7b Watering hole 9 Seedling pot 10 Cultivation bed tank row 20 Cultivation bed tank group 31 Ball tap 40 tub member

Claims (10)

A cultivation bed tank with a slope on the bottom,
A planting panel plate, in which a plurality of planting holes are drilled, arranged on the cultivation bed tank,
A seedling stand provided on the bottom of the cultivation bed tank below the planting hole,
A watering member for watering the nutrient solution so that the nutrient solution is applied to the root of the plant or the upper surface of the seedling mount on the seedling mount,
A ventilating space is formed between the lower surface side of the seedling rack and the bottom surface of the cultivation bed tank, and a nutrient solution cultivation member in which plants are arranged on the seedling rack,
A nutrient solution cultivation member having a recess on the seedling stand. The seedling stand extends in the longitudinal direction of the cultivation bed tank,
The nutrient solution cultivation member according to claim 1, wherein the concave portion of the seedling rack extends in a direction in which the seedling rack extends.   3. The member for hydroponics according to claim 1, wherein a seedling pot of a plant is placed on the seedling stand.   The hydroponic cultivation member according to any one of claims 1 to 3, wherein a width of the concave portion is larger than a width of a bottom surface of the seedling pot.   On the lower surface of the planting panel plate, there is provided an inclined surface for guiding at least a part of the nutrient solution sprinkled from the watering member and applied to the lower surface of the planting panel plate to the seedling mount side to flow. The member for hydroponics according to any one of claims 1 to 4, characterized in that: A cultivation bed tank with a slope on the bottom,
A planting panel plate, in which a plurality of planting holes are drilled, arranged on the cultivation bed tank,
A seedling stand provided on the bottom of the cultivation bed tank below the planting hole,
A watering member for watering the nutrient solution so that the nutrient solution is applied to the root of the plant or the upper surface of the seedling mount on the seedling mount,
A ventilating space is formed between the lower surface side of the seedling rack and the bottom surface of the cultivation bed tank, and a nutrient solution cultivation member in which plants are arranged on the seedling rack,
On the lower surface of the planting panel plate, there is provided an inclined surface for guiding at least a part of the nutrient solution sprinkled from the watering member and applied to the lower surface of the planting panel plate to the seedling mount side to flow. Characteristic nutrient cultivation member.   The member for hydroponics according to any one of claims 1 to 6, wherein a hydrophilic sheet is arranged so as to cover the seedling stand. A hydrophilic sheet is arranged to cover the seedling stand,
The member for hydroponics according to claim 7, wherein the hydrophilic sheet is arranged along the shape of the concave portion.   It is a nutrient solution cultivation method using the member for nutrient solution cultivation as described in any one of Claims 1-8, Comprising: A plant is arrange | positioned to the said seedling stand through the said planting hole, and the said watering member is on the seedling stand. The method of cultivating a nutrient solution, wherein the nutrient solution is sprinkled so that the nutrient solution is applied directly to the roots of the plant or the upper surface of the seedling stand or after hitting the planting panel plate to grow the plant. A nutrient solution cultivation system comprising: a nutrient solution circulating mechanism having a tank, a pipe, and a pump; and the member for nutrient solution cultivation according to claim 1.

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