JP2007082414A - Hydroponic cultivation method and hydroponic cultivation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hydroponic cultivation method comprising saving unnecessary space of a cultivation tank to improve production efficiency, and effectively supplying nutrient solution to seedlings in rooting and germinating steps. <P>SOLUTION: The hydroponic cultivation method comprises sowing plant seeds in respective culture media charged in a plurality of raising seedling pots, and storing the pots in a raising seedling chamber 9. Although the raising seedling pots are usually held by holding members respectively in prescribed arrangement, they are housed in the raising seedling chamber 9 in such an arrangement as to be closer than the prescribed arrangement when the raising seedling pots are housed in the raising seedling chamber 9. Culture solution containing components commonly required through rooting and germination of the seeds to final growth of the seedlings is sprayed in the the raising seedling chamber 9 so as to make the seeds take roots and germinate, and then the raising seedling pots are set in a bed 2 charged with the culture solution so as to be soaked in the culture solution to raise the seedlings in the raising seedling pots. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a hydroponic cultivation method and a hydroponic cultivation apparatus.

  Conventionally, as a hydroponics apparatus, as described in Patent Document 1, for example, a culture tank that is installed in a house and in which a culture solution (hereinafter referred to as nutrient solution) is stored, and a medium that supports plants are provided. What is equipped with several seedling pots which are loaded and immersed in the nutrient solution stored in the said cultivation tank is known. A panel member is attached to the cultivation tank so as to cover the liquid level of the nutrient solution stored in the cultivation tank, and the nutrient solution stored in the cultivation tank has a plurality of float bodies. Are floating side by side. These panel members and float bodies are properly used depending on the type of plant.

  The panel member is provided with an insertion opening into which each of the seedling pots can be individually fitted, and the float body can be inserted with a predetermined number of the seedling pots arranged in a row. Mouths are provided, and the seedling pots are fitted into these insertion ports, so that the seedling pots are held by the panel member and the float body with the lower part immersed in the nutrient solution. .

In hydroponics using such a cultivation tank and seedling pot, seeds of the plant are sown in the medium, and the seedling pot loaded with the medium is used as the panel member or float body (hereinafter referred to as a holding member). It is common to consistently carry out from the rooting and germination of seeds to the final growth of seedlings in the same cultivation tank by holding them. As the nutrient solution, a solution containing components that are commonly required from seed rooting and germination to final growth of seedlings is employed.
JP 2003-265057 A

  However, since the interval at which the holding member holds the seedling pot is set in consideration of the growth of the seedling, useless space is increased at the time of seedling growth, particularly at the time of rooting and germination, and the production efficiency is poor. Moreover, the nutrient solution cannot be effectively supplied to the seedlings in the rooting and germination stages simply by immersing the medium sowing seeds in the nutrient solution. Therefore, it is desired to improve the production efficiency by efficiently using the cultivation tank and to supply the nutrient solution effectively to the seedlings in the rooting and germination stages.

  Japanese Patent Laid-Open No. 6-319392 discloses a technique for rooting and germinating seeds using a nursery room, but this technique is based on seed rooting and germination using the same holding member. This is until the final growth of the seedlings. That is, in the said technique, after arrange | positioning a holding member in a seedling room first, the said holding member is moved to a cultivation tank, and there is no technical idea which utilizes a space efficiently. Moreover, in the said technique, there is no means which implement | achieves an effective nutrient supply to the seedling in a rooting and germination stage only by making humidity into 90-100%.

  In view of such circumstances, the present invention improves the production efficiency by efficiently using a cultivation tank, and is capable of effectively supplying a nutrient solution to seedlings in the rooting and germination stages and It aims at providing a hydroponic cultivation apparatus.

  In order to achieve the above-mentioned object, the hydroponics method according to the present invention uses the nutrient solution containing components that are commonly required from the rooting and germination of plant seeds to the final growth of seedlings. A method for hydroponics, the step of sowing seeds of each plant in a plurality of seedling pots loaded with a medium supporting the plant, and storing these seedling pots in a nursery room Rooting and germination of the seed in the seedling room, and after the rooting and germination, the seedling pots are held on the holding member in an arrangement in which the seedling pots are spaced from each other at a predetermined interval in at least one direction. And in the arrangement state, each seedling pot is placed in a cultivation tank in which the nutrient solution is stored and the seedling chamber is bred by immersing the seedling pot in the nutrient solution. Stores each seedling pot in an array that is denser than the array when these seedling pots are held by the holding member, and sprays the nutrient solution into the seedling chamber to root and germinate the seeds. It is characterized by making it.

  According to this configuration, in the stage where the plant until the seeds root and germinate, the planting pot is stored in a denser arrangement than the arrangement when the seedling pot is held by the holding member. The space can be effectively used to cause rooting and germination of many seeds. Furthermore, in the nursery room, the nutrient solution containing the components that are commonly required from seed rooting and germination to the final growth of the seedling is sprayed to effectively supply the nutrient solution to the seedlings in the rooting and germination stages. can do. After the seeds are rooted and germinated, the seedling pot is moved to the cultivation tank and held by the holding member, thereby forming a predetermined gap between the seedling pots, and the space necessary for growth around the seedling The growth can be promoted while ensuring. In this way, in the nursery room, the seedling pots are arranged closely, and in the cultivation tank, the seedling pots are arranged at intervals considering the growth of seedlings, so that the space between the seedling pots in the cultivation tank becomes the growth of the seedlings. Therefore, the production tank can be efficiently used to improve the production efficiency.

  In the hydroponics method, when the seeds are rooted and germinated, the temperature in the nursery room is maintained at 18 to 25 ° C., and the humidity in the nursery room is adjusted to 90 to 100%. It is preferable to spray the nutrient solution into the nursery room.

  In this way, the nursery room can be made into an optimum environment for seed rooting and germination. Moreover, by adjusting the humidity with the nutrient solution, the seeds can be rooted and germinated more actively.

  Moreover, it is preferable to add a nutrient required for the growth of a plant to the said nutrient solution in the middle of supplying the said nutrient solution to the said cultivation tank.

  If it does in this way, a nutrient can be efficiently supplied to the seedling in the growth stage.

  Further, the holding member is a plurality of float bodies that float alongside the nutrient solution stored in the cultivation tank, and as the float body, two types of float bodies having different width dimensions in the alignment direction are used, In the step of raising the seedling in the seedling pot, immediately after the seeds are rooted and germinated, the seedling pot is held in a float body having a small width dimension, and the seedling pot is floated with a small width dimension according to the growth of the plant. It is preferable to transfer from a body to a float body with a large width dimension.

  In this way, by properly using two types of float bodies with different width dimensions according to the growth of the plant, it becomes possible to grow more seedlings by using the cultivation tank more effectively, and further improve the production efficiency. Can be made.

  Moreover, before spraying the nutrient solution in the nursery room, the nutrient solution is preferably water-treated with aeration and a water heater.

  In this way, seeds can be rooted and germinated more effectively.

  Further, the hydroponic cultivation apparatus according to the present invention is loaded with a cultivation tank in which a nutrient solution containing components necessary in common from seed rooting and germination to final growth of seedlings is stored, and a medium supporting the plant. A plurality of seedling pots, and an array in which these seedling pots are spaced apart from each other at a predetermined interval in at least one direction, and are held in a state where the seedling pots are partially immersed in the nutrient solution stored in the cultivation tank In a hydroponic cultivation apparatus comprising a member, a nutrient solution tank for storing a nutrient solution, a seedling room stored in a denser arrangement than that when the seedling pot is held by the holding member, and the nursery room And a nutrient solution supply means for supplying the nutrient solution stored in the nutrient solution tank to the sprayer and the cultivation tank.

  According to this configuration, the seedling pot is stored in the seedling room in a denser arrangement than the arrangement when held by the holding member, and the seeds are rooted and germinated while spraying the nutrient solution in the seedling room. It is possible, and this makes it possible to effectively utilize the space in the nursery room and to effectively supply the nutrient solution to the seedlings in the rooting and germination stages. Then, after the seeds are rooted and germinated, if the seedling pot is transferred to the cultivation tank and held by the holding member, a predetermined gap is formed between the seedling pots, and the space necessary for growth around the seedlings The growth can be promoted while ensuring. In this way, in the nursery room, the seedling pots are arranged closely, and in the cultivation tank, the seedling pots are arranged at intervals considering the growth of seedlings, so that the space between the seedling pots in the cultivation tank becomes the growth of the seedlings. Therefore, the production tank can be efficiently used to improve the production efficiency.

  In the hydroponic cultivation apparatus, the nursery room is provided with an air conditioner that maintains the temperature in the nursery room at 18 to 25 ° C., and the sprayer adjusts the humidity in the nursery room to 90 to 100%. It is preferable that the nutrient solution is sprayed.

  According to this configuration, the nursery room can be set to an optimum environment for seed rooting and germination. Moreover, by adjusting the humidity with the nutrient solution, the seeds can be rooted and germinated more actively.

  Further, a fertilizer tank for collecting the nutrient solution and adding nutrients necessary for plant growth, and a fertilizer supply means for supplying the nutrient tank with nutrients added in the fertilizer tank to the cultivation tank The nutrient solution supply means is preferably configured to supply the nutrient solution to the fertilizer supply tank.

  According to this configuration, nutrients can be efficiently supplied to the seedlings in the growth stage.

  In addition, the holding member is a plurality of float bodies that float alongside the nutrient solution stored in the cultivation tank, and two types of float bodies having different width dimensions in the arrangement direction are used as the float bodies. Preferably it is.

  According to this structure, it becomes possible to selectively use two types of float bodies having different width dimensions in accordance with the growth of the plant, and thereby, more seedlings can be bred using the cultivation tank more effectively. .

  Moreover, it is preferable that the nutrient solution tank is provided with a circulation path for circulating the nutrient solution stored in the nutrient solution tank, in which aeration and a water heater are disposed in the middle. .

  According to this structure, the nutrient solution water-treated with aeration and a water heater can be sprayed in a nursery room, and a seed can be rooted and germinated more effectively.

  As mentioned above, according to this invention, while eliminating the useless space of a cultivation tank and improving production efficiency, a nutrient solution can be effectively supplied to the seedling in a rooting and germination stage.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, a hydroponic cultivation apparatus according to an embodiment of the present invention includes a house 1 and a plurality of cultivation tanks (hereinafter referred to as beds) 2 installed in the house 1. Moreover, although illustration is abbreviate | omitted, the boiler is provided in the house 1 and the temperature in the house 1 is maintained more than fixed temperature.

  As shown in FIG. 2, each of the beds 2 has a substantially rectangular container shape in a plan view that extends in a specific direction and opens upward, in which the nutrient solution 3 is stored. These beds 2 are installed side by side in a direction orthogonal to the longitudinal direction of the bed 2 while being held at a predetermined height by a plurality of legs 25. In the illustrated example, the bed 2 is provided in one stage in the vertical direction, but the bed 2 may be provided in multiple stages in the vertical direction.

  A supply pipe 21 to which the nutrient solution 3 is supplied is provided at one end side in the longitudinal direction of each bed 2, and a discharge pipe 22 that discharges the nutrient solution 3 from the lower surface of the bed 2 at the other end side. The nutrient solution 3 flows in the bed 2 from one end side toward the other end side. The nutrient solution 3 discharged from the discharge pipe 22 is supplied again from the supply pipe 21 to the bed 2 through a circulation path 76 (see FIG. 9) described later.

  As shown in FIG. 3, a panel member 5 is attached to the bed 2 so as to cover the opening of the bed 2, and the nutrient solution 3 stored in the bed 2 includes As shown, a plurality of seedling float bodies 4 </ b> A or a culture float body 4 </ b> B (described later) (see FIG. 5B) floats side by side in the longitudinal direction of the bed 2.

  The seedling float body 4A is commonly used for various plants, and is used from immediately after the seeds are rooted and germinated until the seedlings are grown to some extent. On the other hand, the panel member 5 is used from the stage in which fruit vegetables such as tomato, pepper, pumpkin and the like and cabbage, lettuce, etc. are grown to some extent until the final growth, and the cultivated float body 4B is made from spinach and komatsuna. It is used from the stage where non-headed vegetables such as are grown to some extent until final growth. A plurality of seedling pots 6A are held on the panel member 5 and the float bodies 4A and 4B.

  The seedling pot 6A is for holding the culture medium 68 supporting the plant in a state immersed in the nutrient solution 3, and is integrally formed with a synthetic resin or the like, as shown in FIGS. 6 (a) and 6 (b). In this way, the horizontal cross-sectional shape remains substantially square and spreads outward as it goes upward.

  Specifically, the seedling pot 6A is a container-shaped medium holding unit 61 that is substantially square in a plan view, and is positioned above the medium holding unit 61 and is slightly larger than the medium holding unit 61 in a plan view. It consists of a frame-shaped ridge portion 62 that forms a substantially square shape, and a connecting portion 63 that connects the inner end portion of the lower surface of the ridge portion 62 and the upper end portion of the culture medium holding portion 61. The medium holding part 61 and the connecting part 63 are provided with windows 65 at appropriate positions, through which air and nutrient solution 3 can be circulated inside and outside the seedling pot 6A.

  The panel member 5 is provided with an insertion port 51 at an appropriate position where each of the seedling pots 6A can be individually fitted. The insertion port 51 is configured by a circular through hole that penetrates the panel member 5 in the plate thickness direction. Then, when the seedling pot 6A is fitted into the insertion port 51, as shown in FIG. 7, the ridge part 62 of the seedling pot 6A is placed on the upper surface of the panel member 5, whereby the culture medium holding part 61 is fed. The seedling pot 6 </ b> A is held by the panel member 5 while being immersed in the liquid 3.

  The seedling float body 4A has a substantially rectangular parallelepiped shape extending in the width direction orthogonal to the longitudinal direction of the bed 2 and flat in the horizontal direction. The length of the seedling float body 4A is set to be slightly smaller than the dimension between the inner side surfaces in the width direction of the bed 2, and the width dimension W1 (see FIG. 5 (a)) is a certain amount of seedlings. It is set to such an extent that the float body 4A does not sink even when grown. The seedling float body 4A is provided with an insertion port 41 into which a predetermined number of seedling pots 6A can be fitted in a line.

  The insertion port 41 has a rectangular shape in plan view extending along the longitudinal direction of the seedling float body 4A and penetrates the seedling float body 4A in the vertical direction. Then, when the seedling pot 6A is fitted into the insertion port 41, as shown in FIG. 8, the ridge part 62 of the seedling pot 6A is placed on the upper surface of the seedling float body 4A, so that the culture medium holding part 61 is The seedling pot 6A is held by the seedling float body 4A while being immersed in the nutrient solution 3.

  In addition, the insertion opening 51 of the panel member 5 is provided at intervals so as to be in an appropriate dense state when the fruits and vegetables and the heading vegetables are grown, and the seedling pot 6A is inserted into the insertion opening 51 of the panel member 5. When fitted, these seedling pots 6A are held at positions spaced apart from each other by a predetermined distance. On the other hand, when the seedling pot 6A is fitted into the insertion port 41 of the seedling float body 4A, the adjacent seedling pots 6A in the insertion port 41 are in contact with or close to each other, but the arrangement direction of the seedling float body 4A, that is, the bed In the longitudinal direction of 2, the adjacent raised seedling float bodies 4A come into contact with each other, so that a predetermined gap is formed between the raising seedling pots 6A fitted in the insertion ports 41 of the adjacent float bodies 4A.

  As shown in FIGS. 5 (a) and 5 (b), the cultivated float body 4B is obtained by increasing the width W1 of the seedling float body 4A. The width W2 of the cultivated float body 4B is set so as to be in an appropriate dense state in the arrangement direction of the cultivated float bodies 4B, that is, in the longitudinal direction of the bed 2, when the non-ballistic vegetable grows. And when the seedling pot 6A is inserted into the insertion port 41 of the cultivation float body 4B, the medium holding part 61 of the seedling pot 6A is soaked in the nutrient solution 3 as shown in FIG. Become.

  Next, the hydroponic cultivation apparatus according to the present embodiment will be described from the viewpoint of the flow of the nutrient solution 3 using the piping system diagram shown in FIG.

  The hydroponic cultivation apparatus according to this embodiment generates seeds in a nutrient solution tank 73 for storing the nutrient solution 3 in the house 1, a fertilizer tank 75 for adding nutrients necessary for plant growth to the nutrient solution 3, and seeds. It further comprises a seedling room 9 for rooting and germination. In addition, these tanks 73 and 75 and the seedling room 9 do not need to be installed in the house 1 and may be installed outside the house 1.

  The nutrient solution tank 73 is supplied with water from an external water source 71, and the nutrient solution is generated by supplying the stock solution from the nutrient solution supply unit 72 in the middle thereof. This stock solution contains components that are commonly required from seed rooting and germination to the final growth of seedlings, such as nitrogen, phosphoric acid, potash and many kinds of trace minerals, many Kinds of organic acids and the like.

  The nutrient solution tank 73 is provided with a circulation path 73 a for circulating the nutrient solution 3 stored in the nutrient solution tank 73. In the middle of the circulation path 73a, an aeration 81 for supplying oxygen to the nutrient solution 3 and an active water device 82 for activating the nutrient solution 3 are disposed, and the nutrient solution is provided by the aeration 81 and the active water device 82. The nutrient solution 3 stored in the tank 73 is always activated. Further, by circulating the nutrient solution 3 in this way, water and the stock solution can be mixed uniformly.

  The nutrient solution 3 stored in the nutrient solution tank 73 is pressurized by a nutrient solution supply pump 74 and then distributed to a plurality of (three in the present embodiment) nutrient solution supply paths 74a to 74c for the raising of the seedlings. A sprayer 91 provided in the chamber 9, the fertilizer tank 75, and the circulation path 76 described above are supplied.

  The sprayer 92 sprays the nutrient solution 3 into the seedling room 9 so that the humidity in the seedling room 9 is adjusted to 90 to 100%. Further, the nursery room 9 is provided with an air conditioner 92 in addition to the sprayer 91 so that the indoor temperature is maintained at 18 to 25 ° C, more preferably 19.5 to 20.5 ° C. ing.

  The circulation path 76 is connected to the supply pipe 21 and the discharge pipe 22 provided in each bed 2 and forms a closed loop. The circulation path 76 is provided with a circulation pump 77, and as described above, the nutrient solution 3 discharged from the discharge pipe 22 is pumped up by the circulation pump 77 and supplied again to the bed 2 from the supply pipe 21. .

  A part of the circulation path 76 is branched to form a branch path 78. An aeration 81 and a water heater 82 are also provided in the branch path 78, and a part of the circulating nutrient solution 3 is treated with water, and then supplied to the bed 2 from the treatment liquid supply pipe 24 (not shown in FIG. 2). It has come to be.

  A manual valve 75b is disposed in the middle of the nutrient solution supply path 74b for supplying the nutrient solution 3 to the fertilizer tank 75. Then, by opening the manual valve 75b, the nutrient solution 3 is stored in the fertilizer tank 75 by a necessary amount.

  In the fertilizer tank 75, a nutrient solution (for example, nitrogen, phosphoric acid, potash, etc.) necessary for plant growth is added to the nutrient solution 3 stored in the fertilizer tank 75 by a predetermined amount, so that a high concentration nutrient solution is obtained. Is generated. This nutrient solution is generated manually. The fertilizer tank 75 is connected to a fertilizer supply pump 75a, and the bed 2 is provided with a concentration detection sensor 23 for detecting the concentration of nutrients in the nutrient solution 3, and the concentration detection sensor 23 detects the concentration. When the concentration falls below the lower limit value of the set value, the fertilizer supply pump 75a is automatically operated, and the nutrient solution is fed into the circulation path 76. In other words, nutrients necessary for plant growth are added to the nutrient solution 3 while the nutrient solution is being supplied from the nutrient solution supply path 74c to the bed 2 via the circulation path 76. Then, the nutrient solution is automatically supplied until the nutrient concentration reaches the upper limit value of the set value. When no nutrient solution is left in the fertilizer tank 75, the manual valve 75b is opened again to supply the nutrient solution 3 to the fertilizer tank 75 to generate the nutrient solution.

  Next, a method for hydroponics using the hydroponic cultivation apparatus configured as described above will be described.

  First, plant seeds are sown in the culture medium 68 loaded in each seedling pot 6A, and these seedling pots 6A are stored in the seedling room 9. At this time, in the seedling room 9, as shown in FIG. 10, the seedling pot 6A is stored in a denser array than that when the seedling float body 4A or the panel member 5 is held. In this embodiment, when the seedling pot 6A is held on the seedling float body 4A, a predetermined gap is formed between the adjacent seedling pots 6A in the longitudinal direction of the bed 2, whereas the inside of the seedling room 9 Then, the seedling pots 6A are laid out so that they are not spaced apart or slightly separated from each other, and stored in a dense arrangement as described above.

  And in the state which maintained the temperature in the seedling room 9 at 18-25 degreeC with the air conditioner 92, spraying the nutrient solution 3 with the sprayer 91 so that the humidity in the seedling room 9 may be adjusted to 90-100%, the said. Root and germinate seeds.

  After the seeds are rooted and germinated, the seedling float body 4A is floated on the bed 2, and the seedling float body 4A holds the seedling pot 6A.

  In the case where the plant is fruit vegetables or heady vegetables, after growing the seedling to some extent with the seedling float body 4A, the cultivation float body 4B is floated on the bed 2, and the seedling pot 6A is grown from the seedling float body 4A to the cultivation float body 4B. Change to. On the other hand, when the plant is a non-tuberculous vegetable, the panel member 5 is attached to the bed 2, and the seedling pot 6A is transferred from the seedling float body 4A to the panel member 5. Then, the seedling is finally grown on the cultivation float body 4B or the panel member 5.

  As explained above, according to the hydroponic cultivation method using the hydroponic cultivation apparatus according to the present embodiment, the seedling pot 6A is raised to the seedling float at the stage where the plant until the seeds root and germinate takes place. By storing in a denser arrangement than the arrangement when held by the body 4A or the panel member 5, it is possible to effectively utilize the space in the nursery room 9 to cause rooting and germination of many seeds. . Further, in the nursery room 9, the nutrient solution 3 containing the components necessary in common from seed rooting and germination to the final growth of the seedling is sprayed to the seedlings in the rooting and germination stages. Can be supplied effectively.

  When seeds are rooted and germinated, the temperature in the nursery room 9 is kept at 18 to 25 ° C. and the nutrient solution 3 is sprayed so as to adjust the humidity to 90 to 100%. 9 can be an optimum environment for seed rooting and germination. Moreover, by adjusting the humidity with the nutrient solution 3, seeds can be rooted and germinated more actively.

  Furthermore, before spraying the nutrient solution 3 in the seedling room 9, the nutrient solution 3 is water-treated with the aeration and the active water in the nutrient tank 73, so that the seeds can be rooted more effectively. Can germinate. And according to the method according to the present embodiment, seeds can be rooted and germinated in a short period of time, usually about one and a half days to two days.

  Then, after the seeds are rooted and germinated, the seedling pot 6A is transferred to the bed 2, so that seedlings can be grown using substantially the entire surface of the bed 2, and the production efficiency can be improved by eliminating the wasted space of the bed 2. Can be improved.

  Further, during the supply of the nutrient solution 3 to the bed 2, nutrients necessary for the growth of the plant are automatically added to the nutrient solution 3 by the fertilizer supply pump 75 a, so that the seedlings in the growth stage Nutrients can be supplied efficiently.

  In addition, when cultivating fruit vegetables and heady vegetables, the bed 2 can be used more effectively by using two types of float bodies 4A and 4B having different width dimensions according to the growth of the plant. It becomes possible to raise seedlings, and the production efficiency can be further improved.

  In addition, in the said embodiment, although the form using the seedling pot 6A of substantially square shape was shown by planar view, when cultivating fruit vegetables and heading vegetables using the seedling float body 4A and the cultivation float body 4B May use a seedling pot 6B having a substantially rectangular shape in a plan view shown in FIG. This seedling pot 6B is obtained by extending the seedling pot 6A in one direction in accordance with the size of the insertion port 41 of the seedling float body 4A and the cultivation float body 4B, and only one is inserted into the insertion port 41. ing. In order to arrange the seedling pot 6B in the seedling room 9, as shown in FIG. 12, the seedling pots 6B may be arranged so as to contact or be close to each other in a direction orthogonal to the longitudinal direction.

  The seedling pot is not limited to the seedling pot 6A shown in FIG. 6 or the seedling pot 6B shown in FIG. For example, it may be trapezoidal in side view or circular in plan view. And according to the shape of the seedling pot, the shapes of the insertion port 51 of the panel member 5 and the insertion ports 41 of the float bodies 4A and 4B can be appropriately changed.

It is a front view of the house of the hydroponic cultivation apparatus concerning one embodiment of the present invention. It is a side view of the bed installed in the house shown in FIG. It is a perspective view when a panel member is attached to the bed shown in FIG. It is a perspective view when a float body is floated on the bed shown in FIG. (A) is a top view of a seedling float body, (b) is a top view of a cultivation float body. It is a figure which shows a seedling raising pot, (a) is a top view, (b) is a partial cross section side view. It is a cross-sectional side view when a seedling pot is held on a panel member. It is a cross-sectional side view when a seedling pot is held on a seedling float body (cultivation float body). It is a piping system diagram of a hydroponic cultivation apparatus. It is a top view when the seedling pot is arrange | positioned in a seedling room. It is a figure which shows the seedling pot of a modification, (a) is a top view, (b) is a side view. It is a top view when the seedling pot of a modification is arrange | positioned in the seedling room.

Explanation of symbols

1 house 2 beds (cultivation tank)
3 Nutrient solution 4A Nursery float body (holding member)
4B Cultivation float (holding member)
5 Panel member (holding member)
6A, 6B Nursery pot 73 Nutrient solution tank 74 Nutrient solution supply pump 74a, 74b, 74c Nutrient solution supply path 75 Fertilizer tank 76 Circulation path 81 Aeration 82 Water heater 9 Nursery room 91 Sprayer 92 Air conditioner

Claims (10)

It is a method of hydroponically cultivating the plant using a nutrient solution containing components that are commonly required from rooting and germination of plant seeds to final growth of seedlings,
Sowing seeds of the plant in each medium of a plurality of seedling pots loaded with a medium supporting the plant;
Storing these seedling pots in a seedling room and rooting and germinating the seeds in the seedling room;
After the rooting and germination, the seedling pots are held on the holding member in an arrangement in which the seedling pots are spaced apart from each other at a predetermined interval in at least one direction, and the nutrient solution is stored in the arrangement state. Including raising each seedling pot in a tank and nurturing the seedling pot in the seedling pot by immersing in the nutrient solution,
In the nursery room, the seedling pots are stored in a denser arrangement than when these seedling pots are held by the holding member, and the seeds are sprayed into the seedling room by spraying the nutrient solution. A hydroponics method characterized by rooting and germination.   When the seeds are rooted and germinated, the nutrient solution is placed in the nursery room so that the temperature in the nursery room is maintained at 18 to 25 ° C. and the humidity in the nursery room is adjusted to 90 to 100%. The hydroponic cultivation method according to claim 1, wherein spraying is performed.   The hydroponic cultivation method according to claim 1 or 2, wherein nutrients necessary for plant growth are added to the nutrient solution while the nutrient solution is being supplied to the cultivation tank. The holding member is a plurality of float bodies floating alongside the nutrient solution stored in the cultivation tank, and as the float body, two types of float bodies having different width dimensions in the alignment direction are used,
In the step of raising seedlings in the seedling pot, immediately after rooting and germination of the seed, the seedling pot is held in a float body having a small width dimension, and the seedling pot is reduced in width according to the growth of the plant. The hydroponic cultivation method according to any one of claims 1 to 3, wherein the float body is transferred from a float body to a float body having a large width dimension.   The hydroponic cultivation method according to any one of claims 1 to 4, wherein the nutrient solution is water-treated with aeration and a water heater before the nutrient solution is sprayed in the nursery room. A cultivation tank in which a nutrient solution containing components necessary in common from seed rooting and germination to final growth of seedlings is stored, a plurality of seedling pots loaded with a medium supporting plants, and these seedling pots In a hydroponic cultivation apparatus provided with a holding member that is held in a state where a part of the nutrient solution stored in the cultivation tank is immersed in an array separated from each other at a predetermined interval in at least one direction,
A nutrient solution tank for storing a nutrient solution, a seedling room in which the seedling pot is stored in a denser arrangement than that when the seedling pot is held by the holding member, a sprayer for spraying the nutrient solution into the seedling room, and the nutrient solution A hydroponic cultivation apparatus, further comprising nutrient solution supply means for supplying nutrient solution stored in a solution tank to the sprayer and the cultivation tank.   The nursery room is provided with an air conditioner for maintaining the temperature in the nursery room at 18 to 25 ° C., and the sprayer sprays the nutrient solution so as to adjust the humidity in the nursery room to 90 to 100%. The hydroponic cultivation apparatus according to claim 6, wherein   Further comprising a fertilizer tank for storing the nutrient solution and adding nutrients necessary for the growth of the plant, and a fertilizer supply means for supplying the nutrient solution added with nutrients in the fertilizer tank to the cultivation tank; The hydroponic cultivation apparatus according to claim 6 or 7, wherein the nutrient solution supply means is configured to supply the nutrient solution to the fertilizer supply tank.   The holding member is a plurality of float bodies floating side by side in the nutrient solution stored in the cultivation tank, and two types of float bodies having different width dimensions in the arrangement direction are used as the float bodies. The hydroponic cultivation apparatus according to any one of claims 6 to 8.   The nutrient solution tank is provided with a circulation path that circulates the nutrient solution stored in the nutrient solution tank, and is provided with a circulation path in the middle of which aeration and a water heater are disposed. The hydroponic cultivation apparatus of any one of Claims 6-9.

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