WO2020100193A1

WO2020100193A1 - Cultivation equipment and method

Info

Publication number: WO2020100193A1
Application number: PCT/JP2018/041844
Authority: WO
Inventors: 貴教門脇
Original assignee: 貴教門脇; 伊藤　謙
Priority date: 2018-11-12
Filing date: 2018-11-12
Publication date: 2020-05-22
Also published as: JP7194948B2; JPWO2020100193A1

Abstract

The present invention addresses the problem of providing cultivation equipment and a cultivation method which are designed to cultivate a plant using air bubbles, with which it is possible to easily simplify the structure and efficiently use the effect of air bubbles.　The present invention is provided with: a storage unit for storing a liquid which is water or a nutrient solution and in which a surfactant is mixed; an air bubble generator for supplying air into the liquid stored in the storage unit to generate air bubbles; and a support unit for supporting a plant to be cultivated. The air bubble generator is configured to sequentially generate air bubbles in the liquid such that a cluster of air bubbles bulge out of the liquid. The support unit supports the plant such that at least a root of the plant or a part of a medium for the plant contacts the cluster directly or through a semi-coating that allows water to pass through.

Description

Cultivation equipment and method

The present invention relates to a cultivation facility and method for cultivating a plant using bubbles.

It is known that it is useful to use bubbles in hydroponics of plants. For example, the cultivation equipment shown in Patent Document 1 is a storage unit (“Liquid solution 3” in the same document) for storing a liquid (“Liquid storage tank 1” in the same document) and a tubular shape oriented in the up-down direction. A support part (in the same document, "hollow tube 2") of which the lower part is a body and is immersed in the liquid, and the support tube of the support cylinder so as to have the same axis or substantially the same axis as the support part. An inner cylinder (in the same document, “liquid-sending pipe 9”) that is positioned and inserted inside and open at both ends, a non-woven fabric filled between the outer peripheral surface of the inner cylinder and the inner peripheral surface of the support (the same). In the literature, "medium 8") and a bubble generator (in the same literature, "air pump 10" and "air supply tube 11") for generating bubbles are provided, and on the peripheral wall of the cylindrical body of the support part, A support hole (in the document, "implantation hole 5") penetrating the inside and the outside is bored, and a funnel-shaped introduction portion whose diameter increases downward is integrally formed on the lower end side of the inner cylinder. ..

When cultivating a plant using this cultivating equipment, the plant is supported by inserting it into the support holes so that its root contacts the nonwoven fabric, and bubbles generated by the bubble generator are introduced from the introduction section to the inside of the inner cylinder. To introduce. The bubbles introduced into the inner cylinder rise together with the liquid and are ejected from the upper end of the inner cylinder. The ejected liquid flows down while being absorbed by the nonwoven fabric. The liquid contained in the non-woven fabric is absorbed by plants.

According to such cultivation equipment and method, it becomes possible to absorb a liquid containing a large amount of oxygen by contacting air bubbles with the roots of the plant, thereby promoting the growth of the plant.

However, with this cultivation equipment and method, the structure becomes complicated and the cost becomes high, and since the bubbles are supplied to the plant side only through the slender inner cylinder, the effect of the bubbles cannot be used efficiently.

JP-A-11-46606

The present invention provides a cultivation facility and method for cultivating a plant using bubbles, wherein the structure can be easily simplified and the effect of bubbles can be efficiently utilized. This is an issue.

In order to solve the above problems, the cultivation equipment of the present invention is a cultivation equipment for cultivating a plant using air bubbles, and a storage unit that stores a liquid mixed with a surfactant or water or a nutrient solution, An air bubble generator that supplies air into the liquid stored in the storage unit to generate air bubbles, and a support unit that supports a plant to be cultivated, and the air bubble generator is a bubble in the liquid. Is formed so as to swell the aggregate of air bubbles from the liquid, and the support portion allows at least a part of the root of the plant or the culture medium of the plant to pass directly or through water. It is characterized by having a structure for supporting the plant so as to touch the aggregate through the semi-coated film.

The storage section is a container having an open upper side, and the bubble generating device generates a bubble in the liquid in the container to form a bubble layer, which is the aggregate, on the liquid surface of the liquid. The support part may have a structure for supporting the plant above the liquid surface in a posture in which the root faces the liquid surface.

The support section may have a holding panel, and the holding panel may have one or a plurality of holding sections for holding the plant.

The space for forming the bubble layer may be formed between the lower surface of the holding panel and the liquid surface of the liquid in a state where the bubble layer is not generated.

The support part is a support container capable of restricting the inside and outside of the liquid or the air bubbles, and the support container has a support hole through which the plant is inserted and held. The assembly may be provided and the assembly may be positioned on the inner surface or the outer surface side of the support container.

The semipermeable membrane may be configured to allow water to pass therethrough and prevent a surfactant from passing therethrough.

Further, the cultivation method to which the present invention is applied is a cultivation method in which a plant is cultivated using air bubbles, and the air is sequentially supplied by supplying air into a liquid containing a surfactant or water which is a nutrient solution. By generating, the aggregate of the bubbles is swollen from the liquid, and at least a part of the root of the plant to be cultivated or a culture medium of the plant is swelled directly or through water during at least a part of the growing period. It is characterized in that the plant is supported so as to touch the aggregate through a coating film.

The root of the plant may be immersed in the foam layer.

The surfactant may be saponin.

The aggregate of bubbles generated by using a surfactant contains a large amount of bubbles and can be used instead of the medium, so that the structure can be easily simplified and the effect of bubbles can be efficiently obtained. Can be used. In addition, since it is possible to generate an aggregate of bubbles with a small amount of liquid, it becomes easy to reduce the amount of liquid necessary for cultivating the plant.

It is a front cross section which shows the structure of the cultivation equipment to which this invention is applied. It is a top view of a holding panel. It is a component table of a nutrient solution. It is a flow figure showing the processing process of the cultivation method to which the present invention is applied. It is a front cross section which shows the structure of another embodiment of the cultivation equipment to which this invention is applied. It is a front cross section which shows the structure of another embodiment of the cultivation equipment to which this invention is applied. It is a front cross section which shows the structure of another embodiment of the cultivation equipment to which this invention is applied. It is sectional drawing which shows the structure of another embodiment of the cultivation equipment to which this invention is applied. It is sectional drawing which shows the structure of another embodiment of the cultivation equipment to which this invention is applied. 3 is photographs showing the growing states of treated areas A to D as of June 12, 2018. (A) is a photograph showing the growth status of treated areas A and B as of June 17, 2018, and (B) shows the growth status of treated areas C and D as of June 17, 2018. It is a photograph. (A) is a photograph showing the growth status of treated areas A and B as of June 19, 2018, and (B) shows the growth status of treated areas C and D as of June 19, 2018. It is a photograph. (A) is a photograph showing the growing state of treated areas A and B as of June 20, 2018, and (B) is a photograph showing the growing state of treated area C as of June 20, 2018. is there. (A) is a photograph showing the growing state of treated areas A and B as of June 25, 2018, and (B) is a photograph showing the growing state of treated area C as of June 25, 2018. is there. It is a photograph which shows the growth state of the cabbage radish collected by cultivation until July 1, 2018 by the processing A and B. It is a photograph which shows the growth state of the cucumber which was cultivated by treatment C until July 1, 2018 and collected. (A) is a photograph showing a growing state of a vine plant, and (B) is a photograph showing a state of a bubble layer of the cultivation equipment of (A). It is a photograph showing the growing state of ginseng.

1 is a front sectional view showing the structure of a cultivation facility to which the present invention is applied, and FIG. 2 is a plan view of a holding panel. A cultivating facility for cultivating the plant P is positioned and placed on a container (reservoir) 1 formed in a cylindrical shape with a bottom and an annular opening edge of the container case 1 so as to close an upper opening portion of the container 1. A holding panel (supporting part) 2 and a bubble generating device 3 for generating bubbles B by supplying air into the liquid L, which is water or a nutrient solution stored in the container 1 and mixed with a surfactant. ing.

The container 1 is formed in a rectangular shape in a plan sectional view and is open at the top. The container 1 is made of a transparent material such as glass or resin so that the inside of the container 1 can be seen. The liquid L is stored inside the container 1.

The above-mentioned nutrient solution is, for example, a standard nutrient solution of Otsuka A prescription or a standard nutrient solution of Otsuka B prescription, but is not particularly limited thereto. Incidentally, the components of these standard nutrient solutions are as shown in FIG.

The liquid L contains the above surfactant for the purpose of promoting foaming. As this surface-active agent, a natural one which does not hinder the growth of the plant P is used. More specifically, plant-derived saponin is used as a surfactant.

The holding panel 2 has one or a plurality of recesses (holding portions) 4 recessed downward. An insertion hole 4a is formed in the center of the bottom of each recess 4. The inside of the concave portion 4 is filled with a fixed body 6 which can be changed flexibly and can contain the liquid L. This fixed body 6 functions as a medium. The solid body 6 may be made of a material containing cellulose. Further, the sponge may be cut into a predetermined size and used as the fixed body 6, or the cut nonwoven fabric or the like may be used as the fixed body 6 in a lump.

The fixed body 6 holds the stem P1 and the root P2 of the plant P. Specifically, the plant P is held on the fixed body 6 by inserting the stem P1 into the solid body 6 or by extending the root P2 inside the fixed body 6 during the growth process. The upper part of the stem P1 and the leaf P3 of the plant P extend upward from the fixed body 6, and the lower part of the stem P1 and the root P2 extend downward from the fixed body 6. The root P2 protrudes outward and downward of the holding panel 2 through the insertion hole 4a and faces the liquid surface L1 side of the liquid L.

That is, the holding panel 2 is configured to support the plant P above the liquid level L1 with the root P2 thereof facing the liquid level L1 of the liquid L stored in the container 1.

The bubble generating device 3 includes an ear stone 8 immersed in the liquid L stored in the container 1, an air pump (not shown) installed outside the container 1, and an air tube 9 connecting the air pump and the air stone 8. I have it.

In order to irradiate the leaf P3 of the plant P supported by the holding panel 2 with light to promote photosynthesis, this cultivation facility may be installed under the sun and cultivated by natural light. You may cultivate P. In this case, the light source 11 composed of an LED or the like is installed directly above the leaf P3 of the plant P. The irradiation direction of the light source 11 is directed downward.

Next, I will explain the cultivation method using this cultivation equipment.

First, inject the liquid L into the container 1. The amount of the liquid L injected into the container 1 is adjusted so that the liquid level L1 does not reach the lower end of the holding panel 2. In other words, a space S is formed between the liquid level L1 of the liquid L that is not foaming and the holding panel 2.

Next, the ear stones 8 are immersed in the liquid L in the container 1. After that, the holding panel 2 on which one or a plurality of plants P are supported is positioned and placed on the annular opening edge of the container 1. In normal hydroponics, at least a part of the root P2 of the plant P supported by the holding panel 2 needs to be immersed in the liquid L in the container 1, but in this example, this condition is not essential. Absent. That is, the root P2 of the plant P supported by the holding panel 2 does not have to reach the liquid level L1 of the liquid L that has been injected into the container 1 and is not foaming.

Next, the air pump pumps air through the air tube 9. The pressure-applied air that reaches the earstones 8 is jetted from the airstones 8 into the liquid L, and countless bubbles B are generated. The bubbles B generated at any time rise in the liquid L and swell upward from the liquid level L1 to form a bubble layer which is an aggregate G of the bubbles B on the liquid level L1.

The bubble layer G is formed in the space S with the above-mentioned configuration. In other words, this space S is used as a space for forming the bubble layer G. Then, at least a part of the root P2 of the plant P is brought into contact with the bubble layer G. The plant P can grow as long as at least a part of the root P2 is in contact with the bubble layer G, and does not need to be immersed in the liquid L.

In the illustrated example, the bubble layer G swells to a position above the lower surface of the holding panel 2, and the plant P supported by the support portion has the entire portion of the root P2 extending downward from the fixed body 6. Are immersed in the bubble layer G. In other words, the holding panel 2 is configured to support the plant P such that the root P2 portion contacts the aggregate G. The plant P efficiently absorbs the nutrients in the liquid L via the bubble layer G and grows.

FIG. 4 is a flow diagram showing the processing steps of the cultivation method to which the present invention is applied. As shown in the figure, according to the above-mentioned content, the method of cultivating the plant P stores water or the nutrient solution inside the container 1 which is a storage part, and the interface in the water or the nutrient solution. A preparing step of mixing an activator, an assembling step of assembling the cultivation equipment after the preparing step, a generating step of generating bubbles B in the liquid L stored in the container 1 after the assembling step, and a liquid L A step of sequentially generating a bubble layer which is an aggregate G of bubbles B on the liquid surface L1 by the bubbles B generated in the inside, and a contact step of bringing the bubbles B into contact with the root P2 of the plant P in the state of the aggregate G And an extinguishing step in which the bubbles B forming the aggregate G burst and disappear.

The preparation process is performed when a new plant P is cultivated or each time the liquid L stored in the container 1 is exchanged. Either the injecting operation into the container 1 or the surfactant mixing operation in this preparation step may be performed first.

The generation process, the generation process, the contact process, and the disappearance process are repeated in this order at any time until the liquid L stored in the container 1 is replaced.

If the cultivation equipment is preassembled in a state where water, nutrient solution or liquid L can be injected into the container 1, the assembly process can be omitted.

According to the cultivation equipment and method configured as described above, since the bubble layer G swells upward from the liquid surface L, the liquid L is supplied to an amount such that the liquid surface L becomes the height at which the root P2 of the plant P is immersed. It is not necessary to inject into the container 1, and the plant 1 can be cultivated with a small amount of the liquid L. For example, the aggregate G can be expanded to several times to several tens times the volume of the liquid L.

In addition, the liquid L after use for cultivation causes pollution when directly discarded in the sea or river, but if the amount of the liquid L used is small, the amount is also small, which is an aspect of environmental protection. There is a big merit from

Moreover, since the bubble layer G is composed of innumerable bubbles B, it becomes possible to cultivate the plant P by fully utilizing the effective action of the bubbles B. For example, many surfactants have a bactericidal action when bubbles B are generated, and the bactericidal action can prevent the liquid L from spoiling. In addition to this, in many cases, the air bubbles B are negatively charged on the surface, which makes it easier for the plant P to absorb cations serving as nutrients, and the absorption efficiency is also improved.

Also, this cultivation equipment and method is superior in terms of the sustainability of nutrient supply compared to the case of cultivation by spraying water or a nutrient solution.

Moreover, this cultivating equipment does not require a special device because the aggregate G of the bubbles B from the liquid L can be swelled if a surfactant is used, and the structure of the cultivating equipment is simple. It is also easy to

Note that when water containing a surfactant is used as the liquid L, it is necessary to separately supply the plant P with nutrients required for growth. For example, a nutrient solution may be supplied to the fixed body 6 from above the fixed body 6, and the nutrient solution may be contained in the fixed body 6 to supply the nutrients to the plant P.

Next, with reference to FIG. 5, another embodiment of the cultivation equipment to which the present invention is applied will be described for different parts from the above-mentioned embodiment.

FIG. 5 is a front sectional view showing the configuration of another embodiment of the cultivation equipment to which the present invention is applied. In the above-mentioned form, since the surfactant is also absorbed by the plant P, it is necessary to mix a surfactant that does not hinder the growth of the plant P with water or a nutrient solution. It is also possible to use those as the surfactant.

In this case, it is necessary to prevent the root P from contacting any of the liquid L, the bubble B, and the aggregate G. Therefore, the semipermeable membrane 10 is provided on the surface (the lower surface in the illustrated example) of the fixed body 6 that comes into contact with the liquid L, the air bubbles B, or the aggregate G. The semipermeable membrane 10 has a structure that allows water in the liquid L to pass therethrough and does not allow components other than water in the liquid L to pass. Therefore, only the water in the liquid L is absorbed by the fixed body 6 or the plant P and used for the growth of the plant P, and the components other than water in the liquid L are absorbed by the fixed body 6 and the plant P. Instead, it remains inside the container 1.

Incidentally, in this embodiment, nutrients are supplied to the plant P by the same means as the case where water mixed with a surfactant is used as the liquid L.

Next, another embodiment of the cultivation equipment to which the present invention is applied will be described with reference to FIG.

FIG. 6 is a front sectional view showing the configuration of another embodiment of the cultivation equipment to which the present invention is applied. In this embodiment, the holding panel 2 has a predetermined thickness, and the holding panel 2 is provided with a holding hole (holding portion) 2a into which the fixed body 6 is inserted. The inner periphery of the holding hole 2a is formed in a tapered shape that gradually decreases downward.

Then, the fixed body 6 on which the plant P is fixed is fitted into the holding hole 2a and inserted, whereby the plant P and the fixed body 6 are held and supported by the holding panel 2. The tapered shape of the holding hole 2a prevents the fixed body 6 fitted and fixed in the holding hole 2a from falling out of the holding hole 2a.

Incidentally, also in the present embodiment, the bubble layer G is swelled up to the position reaching the lower surface of the holding panel 2 by the bubble generator 3.

Next, with reference to FIG. 7, another embodiment of the cultivation equipment to which the present invention is applied will be described for different parts from the above-mentioned embodiment.

FIG. 7 is a front sectional view showing the configuration of another embodiment of the cultivation equipment to which the present invention is applied. In this embodiment, the fixed body 6 functions as a support portion. Specifically, the fixed body 6 is floated on the bubble layer G using buoyancy. The fixed body 6 holds the root P2 and the stem P1 of the plant P.

According to the cultivation equipment of this embodiment, since the holding panel is unnecessary, the structure becomes simpler and the manufacturing cost becomes lower.

Note that the fixed body 6 may be composed of one or more floating materials such as dead trees and fallen leaves laid in a floating state over the entire upper surface of the bubble layer G.

Next, with reference to FIG. 8, another embodiment of the cultivation equipment to which the present invention is applied will be described by referring to differences from the above-mentioned embodiment.

FIG. 8 is a cross-sectional view showing the configuration of another embodiment of the cultivation equipment to which the present invention is applied. The cultivation equipment of this embodiment is provided with a support container 12 as a support portion, which is separated from the inside and the outside to regulate the movement of the liquid. Specifically, the support container 12 is formed in a spherical shape having a hollow inside. The support container 12 has a spherical surface provided with a plurality of support holes 12a for communicating the inside and the outside.

The plant P is inserted into the support hole 12a so that the root P2 side thereof is located inside the support container 12 and the leaf P3 side thereof is located outside the support container 12, whereby the plant P is supported by the support container 12. Support. Incidentally, at the time of the insertion, the fixed body 6 holding the root P2 and the stem P1 or the stem P1 itself of the plant P is fitted to the inner peripheral edge side of the support hole 12a.

The storage part 13 for storing the liquid may be formed inside the support container 12, but a storage part (not shown) may be provided outside the support container 12. The light source is located outside the support container 12. By the way, the light source may be the sun or artificial illumination such as an LED.

When the storage part 13 is provided inside the support container 12, the storage part 13 formed inside the support container 12 is provided with the liquid L stored therein by immersing it in the ear stones 8. The bubbles B are ejected from the earstone 8 so that the bubbles G are filled with the aggregate G of the bubbles B.

When the reservoir is provided outside the support container 12, the ear stones 8 are provided by being immersed in the liquid stored in the reservoir, and the aggregate G of the bubbles B swells from the liquid L stored in the reservoir. As described above, the bubbles B are ejected from the ear stones 8 and the aggregate G is supplied into the support container 12 to be filled therein.

The light source may be sunlight, but an artificial light source 11 that is installed outside the support container 12 and is composed of an LED or the like may be used as a light source for cultivation.

According to the cultivation equipment configured in this way, it is possible to efficiently grow plants even in a weightless environment such as outer space. Further, since it becomes possible to uniformly provide the support holes 12a on the entire spherical surface of the support container 12, it is possible to grow more plants P in one support container 12.

Next, with reference to FIG. 9, another embodiment of the cultivation equipment to which the present invention is applied will be described for different parts from the above-mentioned embodiment.

FIG. 9 is a cross-sectional view showing the configuration of another embodiment of the cultivation equipment to which the present invention is applied. In the cultivation equipment of this embodiment, by inserting the plant P into the support hole 12a such that the root P2 side is located outside the support container 12 and the leaf P3 side is located outside the support container 12. , The plant P is supported by the support container 12. Incidentally, at the time of the insertion, the fixed body 6 holding the root P2 and the stem P1 or the stem P1 itself of the plant P is fitted to the inner peripheral edge side of the support hole 12a.

A artificial light source 11 composed of LEDs etc. is provided inside the support container 12 on the center side. A storage unit (not shown) is arranged outside the support container 12, and the ear stones 8 are immersed in the liquid L stored in the storage unit so that the aggregate G of the bubbles B swells from the liquid L. Eject air from 8. The aggregate G swollen from the liquid L is supplied to the spherical outer surface side of the support container 12.

If the watertightness between the inside and outside of the support container 12 can be ensured, the support container 12 itself holding a plurality of plants P may be immersed in the aggregate G of the bubbles B.

Next, the experimental results of the cultivation equipment and method to which the present invention is applied will be described.

1 to 4 using the standard cultivation solution of the Otsuka A prescription as a nutrient solution and cultivating a plant P, a radish radish and a cucumber from June 9, 2018 to July 1, the same year. went. Here, the cultivation equipment for cultivating kaiware radish using the bubble layer G to which the present invention is applied is referred to as a treatment section A. Further, for the purpose of comparison with the treated area A, a cultivation facility for cultivating radish radish without using the bubble layer G is referred to as a treated area B. On the other hand, a cultivation facility for cultivating cucumber using the bubble layer G to which the present invention is applied is referred to as a treatment section C. Further, for the purpose of comparison with the treated area C, a cultivation facility for cultivating cucumber without using the bubble layer G is referred to as treated area D. By the way, in the treatment sections B and D, the nutrient solution containing no surfactant is used as a liquid, and the root P2 is dipped in this liquid to generate bubbles in the liquid to the extent that the bubble layer G is not formed.

On June 9 of the same year, seeds were seeded on the medium 6 of the treatment sections A to D.

Fig. 10 is a photograph showing the growth status of treatment areas A to D as of June 12, 2018. The lower left cultivation equipment is the treatment area A, the lower right cultivation equipment is the treatment area B, the upper left cultivation equipment is the treatment area C, and the upper right cultivation equipment is the treatment area D. As shown in the figure, germination was confirmed in the treated sections A to C, but germination was not confirmed in the treated section D.

FIG. 11 (A) is a photograph showing the growth status of treated areas A and B as of June 17, 2018, and (B) is the growth status of treated areas C and D as of June 17, 2018. Is a photograph showing. The cultivation equipment on the left side of FIG. 4A is a treatment area A, and the cultivation equipment on the right side is a treatment area B. In the two treatment areas A and B, smooth growth was observed respectively. The cultivation equipment on the left side of FIG. 3B is the treatment area C, and the cultivation equipment on the right side is the treatment area D. Good growth was observed in treated area C, while germination was not confirmed in treated area D.

FIG. 12 (A) is a photograph showing the growth status of treated areas A and B as of June 19, 2018, and (B) is the growth status of treated areas C and D as of June 19, 2018. Is a photograph showing. The cultivation equipment on the left side of FIG. 4A is a treatment area A, and the cultivation equipment on the right side is a treatment area B. In the two treatment areas A and B, smooth growth was observed respectively. The cultivation equipment on the left side of FIG. 3B is the treatment area C, and the cultivation equipment on the right side is the treatment area D. Good growth was observed in treated area C, while germination was not confirmed in treated area D.

FIG. 13 (A) is a photograph showing the growing state of treated areas A and B as of June 20, 2018, and (B) shows the growing state of treated area C as of June 20, 2018. It is a photograph. The cultivation equipment on the left side of FIG. 4A is a treatment area A, and the cultivation equipment on the right side is a treatment area B. In the two treatment areas A and B, smooth growth was observed respectively. The cultivating equipment in the same figure (B) is the treatment section C, and in the treatment section C, favorable growth was observed, while in the treatment section D, germination was not continuously confirmed.

FIG. 14 (A) is a photograph showing the growing state of treated areas A and B as of June 25, 2018, and (B) shows the growing state of treated area C as of June 25, 2018. It is a photograph. The cultivation equipment on the left side of FIG. 4A is a treatment area A, and the cultivation equipment on the right side is a treatment area B. In the two treatment areas A and B, smooth growth was observed respectively. The cultivating equipment in the same figure (B) is the treatment section C, and in the treatment section C, favorable growth was observed, while in the treatment section D, germination was not continuously confirmed.

Fig. 15 is a photograph showing the growth state of radish radish collected by treatment A and B until July 1, 2018. The left side of the figure is the radish radish collected from the treatment area A, and the right side is the radish radish collected from the treatment area B. Good growth was confirmed in both treatment areas A and B.

FIG. 16 is a photograph showing the growth state of cucumbers that were cultivated in Treatment C until July 1, 2018 and collected. Good growth was confirmed in treated area C. On the other hand, in treated area D, germination was not confirmed until the end, but the cause is unknown.

Next, another experiment result of the cultivation equipment and method to which the present invention is applied will be described.

Using the cultivating equipment of the forms shown in FIGS. 1 to 4 and the standard nutrient solution prescribed by Otsuka A as a nutrient solution, a vine plant that is a plant P was cultivated. FIG. 17 (A) is a photograph showing the growing state of a vine plant, and (B) is a photograph showing the state of the bubble layer of the cultivation equipment of (A). As shown in the figure, smooth growth was also observed in vine plants.

Using the cultivation equipment of the form shown in FIG. 7 and the standard nutrient solution of Otsuka A prescription, the plant G, ginseng, was cultivated. FIG. 18 is a photograph showing the growing state of ginseng. As shown in the figure, smooth growth was also observed in ginseng.

1 container (storage part)
2 Holding panel (support part)
2a Holding hole (holding part)
3 Bubble generator 4 Recessed part (holding part)
11 Support container (support part)
11a Support hole 12 Support container (support part)
13 Reservoir B Bubble G Bubble layer (aggregate)
L liquid L1 liquid level P plant P2 root S space

Claims

A cultivation facility for cultivating a plant using bubbles,
A storage unit that stores a liquid that is water or a nutrient solution mixed with a surfactant,
A bubble generating device that generates air bubbles by supplying air into the liquid stored in the storage section,
With a support portion for supporting a plant to be cultivated,
The bubble generating device is configured to swell the aggregate of bubbles from the liquid by sequentially generating bubbles in the liquid,
The support portion has a structure that supports the plant such that the root of the plant or at least a part of the culture medium of the plant touches the aggregate directly or through a semi-coating film that allows water to pass. Characterizing cultivation equipment.
The storage part is a container whose upper part is opened,
The bubble generating device is configured to generate a bubble in the liquid in the container to form a bubble layer as the aggregate on the liquid surface of the liquid,
The cultivation equipment according to claim 1, wherein the support portion has a structure that supports the plant above the liquid surface in a posture in which the root faces the liquid surface.
The support portion has a holding panel,
The cultivation equipment according to claim 2, wherein the holding panel is formed with one or a plurality of holding portions for holding the plants.
The cultivation facility according to claim 3, wherein a space for forming the bubble layer is formed between a lower surface of the holding panel and the liquid surface of the liquid in a state where the bubble layer is not generated.
The support part is a support container capable of restricting the coming and going of the liquid or the air bubble by separating the inside and the outside,
The support container is provided with a support hole through which the plant is inserted and held,
The cultivation facility according to claim 1, wherein the aggregate is introduced into an inner surface or an outer surface side of the support container.
The said semipermeable membrane is the cultivation equipment in any one of Claim 1 thru | or 5 comprised so that water may be penetrated and a surfactant may not be penetrated.
A cultivation method for cultivating a plant using bubbles,
By supplying air into a liquid mixed with a surfactant or water, which is a nutrient solution, to sequentially generate bubbles, an aggregate of the bubbles is swelled from the liquid,
The roots of the plant to be cultivated or at least a part of the culture medium of the plant are supported so as to come into contact with the aggregate during the growing period of at least a part thereof, directly or through a water-permeable semi-coating film. A cultivation method characterized by the above.
The cultivation method according to claim 7, wherein the root of the plant is immersed in the bubble layer.
The cultivation method according to claim 7, wherein the surfactant is saponin.