JPH04218319A - Culture tool - Google Patents

Abstract

PURPOSE:To provide a culture tool comprising new structure improved in order to better balance of supply of water and nutrient and oxygen feed to root of plant. CONSTITUTION:A water absorption controlling pipe 6 having both open ends, comprising a water impermeable pipe with a hollow part packed with a water absorbing material 5 is combined with an inner container 1 provided with a great number of rooting small holes 11 in such a way that a top opening part 61 thereof is laid in a dented part 2 storing a rooting material of the inner container 1 and a bottom opening part 62 is set at the bottom of the inner container 1. The water impermeable pipe and the water absorption controlling pipe are suspended in a liquid tank 7 charged with a culture solution L. An amount of water absorption in the dented part 2 of rooting material in the inner container 1 can be regulated by controlling height and position of the dented part 2 of rooting material of the top opening part 61 of the water absorption controlling pipe 6, controlling contact ratio of the bottom opening part 62 with water or the culture solution L and controlling both the top and the bottom opening parts 61 and 61.

Description

[Detailed description of the invention]

0001

[Purpose of the Invention] This invention relates to a cultivation tool for growing more healthily mainly garden plants such as flowers and ornamental plants, and in particular, it is concerned with the balance between water and nutrient supply and oxygen supply to the roots of these plants. The purpose of the present invention is to provide a cultivation tool with a new structure that has been improved to improve the quality of cultivation.

0002

BACKGROUND OF THE INVENTION As lifestyles have become more enriched, various gardening products have been introduced into ordinary households. One example of this is growing and appreciating various plants through solution cultivation. Solution cultivation, a cultivation method in which plants are grown by using a material other than soil as a medium and supplying water and nutrients through a solution, can be done in several ways depending on the structure of the cultivation equipment used, the means for supplying the culture solution, etc. One of the cultivation methods is to use artificial soil (i.e., polyester fiber molded products, polyurethane processing, molded products, etc.) as a culture medium.
There is a cultivation method called hydroponic cultivation that uses a liquid tank and continuously supplies culture solution to artificial soil through a liquid supply pipe.

The most familiar type of cultivation equipment that uses the principle of hydroponic cultivation is the potted cultivation equipment, which is
We have adopted a structure in which the culture solution stored in the liquid tank is supplied into the artificial soil from the lower end of the artificial soil using a liquid suction wick (a special wick that excels in capillary action and does not rot) rather than a liquid supply pipe, so it does not require much effort. It does not require advanced technology, cultivation management is easy, and the structure of the cultivation equipment itself is relatively simple and inexpensive, so it is used as equipment for cultivation practice in school classes and is easy to enjoy. It is widely used in general households as an indoor gardening tool.

[0004] However, on the other hand, in the case of this potted cultivation equipment, the culture solution is supplied from below the artificial soil, so it is necessary to keep the water retention amount supplied below the artificial soil above a specified level. Otherwise, there is a problem in that it is difficult for water or culture solution to permeate into the upper part of the soil. Therefore, in order to supply liquid to the upper part of the soil in this cultivation tool, it is necessary to supply a large amount of liquid from below and to maintain the liquid supply state at all times.

[0005] As a result, the amount of water retained under the soil tends to become saturated (overwatered) at any time, causing problems such as root rot and oxygen deficiency, resulting in poor growth conditions. This tendency is particularly noticeable when natural soil, which has excellent water absorption and water retention properties, is used instead of artificial soil. There are also cases where people lose confidence in growing plants using potted cultivation equipment using hydroponic cultivation, which should be easy, and lose the opportunity to easily enjoy home gardening. ing.

On the other hand, in order to avoid the above disaster,
Even for people who enjoy hydroponic cultivation using potted cultivation equipment using only artificial soil, if possible, the soil should have a buffering capacity like natural soil (i.e., voluntarily manage the amount of nutrients, composition ratio, pH, etc.) By using soil that has the ability to avoid soil-borne diseases caused by parasitic microorganisms, we achieve more advantageous plant growth, and even grow special plants that are difficult to grow without soil that has a buffering capacity. There are also expectations that people will be able to easily enjoy growing plants using hydroponic cultivation using this pot-based cultivation equipment. This invention was developed as a result of continued development and research to deal with the above situation.
It has finally been completed and consists of the structure as detailed below.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As is clearly understood from the representative embodiment of the invention shown in the drawings, the cultivation tool of the present invention includes a rooting material accommodating recess 2 in which a large number of rooting holes 11 are formed;
The inner container 1 has ears 3 or legs 4 for suspending the rooting material storage recess 2 in the liquid tank 7, and both ends are open, and a water absorbing material 5 is provided in the hollow part. A water absorption adjustment pipe 6 made of a water-impermeable material tube and filled with water absorption adjustment pipe 6 has an upper end opening 61 inside the rooting material accommodation recess 2 of the inner container 1, and a lower end opening 62 of the pipe 6 which is viewed from below the inner container 1. At the same time, they are combined in a suspended manner in the liquid tank 7 in which water or culture solution L is stored, and the upper end opening 61 of the water absorption adjustment pipe 6 is placed at the height position or opening inside the rooting material accommodation recess 2. By adjusting the area, adjusting the contact ratio of the lower end opening 62 with water or culture solution L, or adjusting both the upper and lower end openings 61 and 62, the rooting material of the inner container 1 can be accommodated. The basic gist of the configuration is such that the amount of water absorbed into the recess 2 can be adjusted.

[0008] The inner container 1 is made of a material such as plastics or glass that can be formed relatively freely, can be easily colored, and can also be made transparent for its shape formation or design effect. Although it is preferable to use a material such as stainless steel or ceramics, it is of course possible to use a material such as stainless steel or ceramics if necessary. The external shape of the inner container 1 can be a cylinder, a square prism, or various other shapes.
After water or culture solution L is supplied through the upper end opening 61 of the water absorption adjustment tube 6, the water that collects and accumulates at the bottom thereof, that is,
In order to reduce gravity water (excess water) as much as possible,
It is preferable that the bottom area is narrow, for example, it is formed in the shape of an inverted cone with a bottom end shaped like the one adopted in each of the embodiments described later.

A large number of small rooting holes 11, 11, . . . are formed in the outer circumferential wall of the rooting material accommodating recess 2 of the inner container 1 so that the roots of plants can grow out of the container 1 as they grow. You must do so. The rooting holes 11, 11,...
When forming the holes, for example, the holes are not just drilled horizontally but diagonally downward so that the roots can easily grow into the liquid tank 7, and the exit of the small hole 11,
It would be advantageous if consideration was given to forming a hole with a shape in which the periphery of the entrance was carved out smoothly. In addition, inner container 1
When used for cultivating climbing plants, a support that is necessary to support the growing vines can be erected at a suitable location on the upper edge (even if it is the ear 3 described later). It is convenient to provide holding parts 12, 12, . . . .

[0010] The liquid tank 7 can be formed into a specially made one whose combination with the inner container 1 has been predicted in advance, or an existing flower pot can be used as is or after being appropriately processed. From the viewpoint of controlling the amount of water or culture solution L, it is desirable that this liquid tank 7 is made of a transparent material, but if it cannot be made transparent due to the material, A viewing window may be provided at an appropriate location on the peripheral wall that does not impede the storage of the liquid L, or a simple water meter may be incorporated. In addition, the surrounding wall may have a double structure, for example, the inside of the surrounding wall may be formed hollow to provide an air layer, or the hollow surrounding wall may be filled with a heat insulating material using a blowing method to form an insulating structure. In addition, a substance 8 having a water rot prevention effect such as ion exchange resin or activated carbon may be placed in the liquid tank 7 to keep the water or culture solution L as clean as possible for as long as possible. You can also.

[0011] The ear portion 3 or the leg portion 4 is a general term for a component for suspending the inner container 1 in the liquid tank 7. In addition to the ones that do not have a shape that protrudes outward, the upper edge is simply hooked onto the inner wall surface of the inverted conical trapezoidal liquid tank 7, and in some cases, the entire upper edge is It also includes a structure in which only key points are caught on the inner wall surface instead of the circumference, and the leg portion 4 also includes a water absorption adjustment pipe 6, in addition to the structure shown in each embodiment described later. The structure of the legs 4 includes any structure that allows the inner container 1 to float above the bottom of the liquid tank 7 so that the lower end opening 62 can protrude downward from the bottom of the inner container 1 to some extent. be done.

The water-absorbing material 5 is made of, for example, a sponge, an ultra-fine fiber woven fabric, or a fine material that can effectively raise the water or culture solution L stored in the liquid tank 7 by capillary action or other (for example, siphon principle). It is possible to use various materials such as granular sand and bundled pipe material. These water absorbing materials 5 may be integrally molded with the water absorption adjusting tube 6, or may be formed as separate bodies that can be loaded and assembled later.

The water absorption regulating pipe 6 is formed using the above-mentioned water absorbing material 5 as a pipe core, but it itself is made of non-water permeable material.
For example, it is made of plastic, stainless steel, or plastic laminated material, and has a structure that prevents the absorbed water or culture solution L from leaking halfway into the outside, that is, into the rooting material storage recess 2. , and has an appropriate cross section (a cross section that approximately matches the mounting portion 13 formed in the inner container 1)
It is a tube body with both ends open and upper and lower openings 61, 6.
form 2.

Although not shown in the drawings, at the upper end of the water absorption adjustment tube 6, there is provided a placement plate (for example, a polyester fiber molded product with excellent water retention) to facilitate the radial arrangement of plant roots. It is also possible to attach an umbrella-shaped member formed by molding a material used as a culture medium such as a molded peat moss into a cone shape.

[0015] Furthermore, when the water absorbing material 5 combined with the water absorbing adjustment pipe 6 is made of a material such as fine sand that easily spills out from the lower end opening 62 when filled into the pipe, For example, the lower end opening 62 may be plugged with another piece of water-absorbing material such as a piece of sponge, or the upper end opening 61 may be plugged with another piece of water absorbing material such as a piece of sponge.
It is preferable to form a structure in which the shape is tapered toward the lower end opening 62. The rooting material that can be used in the inner container 1 of this invention is not only applicable to all artificial soils that have been used in conventional hydroponic cultivation, but also to all natural soils that are used in ordinary pots. Become. EMBODIMENT OF THE INVENTION Hereinafter, the structure of this invention will be demonstrated more concretely based on the Example shown in drawing.

[0016]

[Embodiment 1] First, what is shown in the center vertical sectional perspective view of FIG. 1 and the perspective view of only the inner container 1 in FIG. 2 are examples of embodiments of the most basic structure of the present invention. That is, the inner container 1 is formed to have an appearance approximately shaped like a wine glass or a cocktail glass, and a portion corresponding to the head of the same shape is inserted into the rooting material accommodation recess 2 in which a large number of rooting small holes 11 are formed. , the part corresponding to the stem is used as the mounting part 13 of the water absorption adjustment tube 6, and one or more water absorption adjustment pipes 6 are combined with the mounting part 13 so as to be vertically adjustable. The cultivation tool is formed with ears 3 for edge hooking.

In the inner container 1 of this embodiment, the mounting portion 13
Although an example is shown in which the base 14 is formed at the lower end in the shape of a flat plate, it may be omitted if necessary, and the mounting part 13 may simply be formed as a part that protrudes downward, or may be formed as a hollow hole. Of course, it is also possible to do so. The base 8 is like a lid that protects the substances 8 such as water quality improvers and anti-corrosion agents filled in the lower part of the liquid tank 7. Although it is designed to be placed on the formed step 73, this step 73 is not necessarily necessary, and the inner container 1 is suspended in the air by the ears 3, and the base 14 is placed in an appropriate position from the bottom of the liquid tank 7. It may also be made to float in a certain position. Note that the water or culture solution L placed in the liquid tank 7 communicates with the top and bottom regardless of the formation of this base 14, and by forming the liquid tank 7 transparent, the amount can be confirmed. It is convenient to do so.

The water absorption adjustment pipe 6 is attached to the attachment part 13 of the inner container 1.
The structure is such that it is inserted slightly tightly into the hollow part, and its frictional resistance allows the combination state with respect to the inner container 1 to be freely adjusted. It is possible to make it the one of . Further, the upper end opening 61 is designed to be larger than the lower end opening 62 in order to increase the exposed area of the water absorbing material 5 that is filled in the hollow part and reaches the lower end opening 62. However, it is not necessarily necessary to use this example, and it is also possible to use a completely single-tube shape.

[0019]Although not shown in the figure, the plant is
The roots are placed in the upper end opening 61 of the water absorption adjustment pipe 6, and the roots are spread approximately evenly around the circumference, and the rooting material is filled as appropriate, and the roots are covered with the rooting material. ,
The entire base of the plant is buried, and naturally the upper end opening 61 of the water absorption adjustment pipe 6 and the exposed water absorption material 5 are also buried.
It should be placed at the optimal height within this rooting material.

[0020]

[Embodiment 2] This example is characterized by the structure of the inner container 1, and as shown in the center vertical sectional view in FIG. 3 and the perspective view of only the inner container 1 in FIG. is formed into a substantially W-shaped or substantially inverted M-shaped cross section with a raised central part, and the water absorption adjustment pipe 6 is installed vertically with the raised central part as the mounting part 13, and the upper end of the liquid tank 7 is installed at the upper end of the outer periphery. This cultivation tool is formed with ears 3 for edge hooking or has legs 4 protruding downward.

[0021] In this example, unlike the above-mentioned embodiment, a configuration is adopted in which the mounting portion 13 is cylindrical and protrudes into the rooting material storage recess 2 of the inner container 1. This structure was only adopted because it was convenient in terms of connecting to the structure of the parts, and it is not a structure that restricts this characteristic approximately W-shaped or approximately inverted M-shaped cross section. Alternatively, the cylindrical mounting part 13 may be formed downward from the central raised part, or the mounting part 13 itself may be omitted, and only a hole through which the water absorption adjustment tube 6 is inserted may be bored. It is also possible to have a built-in structure.

As a structure for holding the inner container 1 in a suspended state, in this example, the ears 3 are formed on the upper edge of the inner container 1, and the legs 4 are used to hold the inner container 1 independently from the liquid tank 7. However, in some cases, the ears 3 may be omitted and only the legs 4 are used, and the legs 4 may be used to hold the inner container 1 suspended in the liquid tank 7. In addition to realizing this, it may also serve as a stand for standing on its own when taken out from the liquid tank 7.

[0023] In this embodiment, the water absorption adjustment tube 6 is constructed from a collection of a plurality of coated strings, and the strings inside the water-impermeable coating part are the same as the absorbent material 5. However, an example is shown in which fine grain sand 51 is further combined with the exposed portion of the water absorbing material 5 at the upper end. In the figure, 71 is a hole for regulating the amount of water or culture medium L entering the liquid tank 7, 72 is a rotating lid attached to a small hole for checking the water level in the liquid tank 7, and 12 is a hole for regulating the amount of water or culture solution L entering the liquid tank 7. , shows the holding part for erecting the pillars, which is necessary to support the growing vines.

The following two examples are examples in which the water absorption adjustment pipe 6 has a water absorption amount adjustment structure.

[Embodiment 3] First, in this example, as shown in the center vertical sectional view in FIG. 5 and the perspective view of only the inner container 1 in FIG.
The water absorption regulating tube 6 itself is formed in advance into a plurality of hollow parts, each of which is filled with water absorbing material 5, and the lower end opening 62 is provided with a water absorption prevention material for each of the divided hollow parts. Stoppers 63, 63, .

The water absorption prevention plug 63 is as shown in the figure.
In addition to having a structure connected to the lower end opening 62 of the water absorption adjustment pipe 6 in a hinge-like manner, it may also be formed of something like a single cork stopper, which can be attached and removed as necessary. Good too. Note that the divided hollow parts of the water absorption adjustment pipe 6 do not all have to have the same cross-sectional area;
It is possible to make subtle adjustments by mixing sizes, etc., or by changing the material of the water-absorbing material 5 packed individually, even if the cross-sectional area is the same, to take advantage of the difference in water-absorbing capacity. You may also make subtle adjustments to the water supply.

[0026]

[Embodiment 4] The last example is already adopted in FIGS. 3 and 4, which have been taken up as an example of the structure of the inner container 1, and the water absorption adjustment pipe 6 is arranged in a plurality of flexible tubes. A water absorbing material 5 is combined inside each of the non-water permeable pipe bodies (including those in which a mere coating or other coating layer is formed on the surface of the water absorbing material 5), and a water absorbing adjustment pipe 6 is formed. By bending the lower end portions of several of the plurality of water-impermeable tubes constituting the tube, the lower end opening 62 can be brought in and out on the surface of the water or culture solution L, and water is not absorbed from them. This is an example of a device in which the amount of water absorption can be adjusted.

Each of the flexible, water-impermeable tubes with the water-absorbing material 5 assembled therein functions as a water-absorption adjustment tube 6, and is bent to allow water or culture solution L to flow through the lower end opening. The structure for keeping the portion 62 from touching can be realized by inserting the lower end opening 62 into the temporary fixing portion 15 provided at the appropriate location on the lower surface of the inner container 1, as in the illustrated example. It is also possible to adopt other appropriate means, such as temporarily tying them together with wire or the like.

[0028]

[Function] In the cultivation tool of the present invention having the above-described structure, first, the water absorption adjusting pipe 6 is installed substantially vertically so as to protrude into the rooting material accommodating recess 2 of the inner container 1. At that time, the height of the upper end opening 61 of the water absorption adjustment pipe 6 is determined depending on the amount of rooting material to be filled, that is, to which part of the rooting material storage recess 2 the rooting material is packed. Adjustment is made by moving the water absorption adjustment tube 6 up and down as appropriate so that it is at a somewhat lower position. After that, place the root of the plant to be cultivated on the upper end of the water absorption adjustment pipe 6, and fill it with an appropriate rooting material, such as artificial soil or natural soil, while making sure that the roots spread approximately evenly around the surrounding area, so that the root of the plant is completely covered. Try to hide it.

The steps up to this point are carried out as work on the inner container 1, regardless of the liquid tank 7. After the plants are planted in the inner container 1 as desired, the inner container 1 is gently inserted from its lower end into the liquid tank 7 into which an appropriate amount of water or culture solution L is poured, and the ears 3 or legs of the inner container 1 The inner container 1 is suspended in the liquid tank 7 by the portion 4 to realize a cultivation tool.

[0030] As a result, the lower end opening 61 of the water absorption adjustment tube 6 becomes immersed in the water or culture solution L accumulated at the bottom of the liquid tank 7, and as a result, the water or culture solution L is gradually sucked upward through the water absorption material 5. It's getting worse. In this process, the water or culture solution L rising inside the water absorption adjustment pipe 6 never flows out toward the rooting material such as artificial soil or natural soil until it reaches the upper end opening 61. The water or culture solution L that has been sucked up and reached the upper end opening 61 first begins to permeate the rooting material around the base of the plant (these are the rooting materials located far above), and then further spreads to the surrounding area. Due to the action of gravity, it gradually penetrates downward, and finally it penetrates almost the entire area evenly.

[0031] In this way, the water or culture solution L repeats the phenomenon of constantly propagating and penetrating downward from the upper rooting material, so that the water or culture solution L is supplied almost evenly to the entire root of the plant. Therefore, only the lower part where the roots grow does not become oversaturated with moisture, and the outer periphery of the rooting material is exposed to air through the rooting holes 11, 11, . . . of the inner container 1. Thanks to these conditions, an extremely favorable environment for root growth is created.

[0032] The roots that have grown and extended are placed in the rooting holes 11, 1.
1, ... starts to hang down in the direction of the liquid tank 7, and directly falls into the liquid tank 7.
As they come into contact with the air inside, they grow further under moderate humidity, and some of them absorb moisture and nutrients directly from the water or culture solution L accumulated at the bottom of the liquid tank 7, never causing root rot. There is no chance of triggering or causing oxygen deprivation. In addition, if the amount of water or culture solution L to be supplied needs to be adjusted depending on the type of plant, its growth condition, etc., the cultivation apparatus shown in Embodiment 3 or 4, in which the water absorption adjustment pipe 6 can adjust water absorption, may be used. Adopt the following methods to ensure optimal management and growth.

[0033]

[Effects] First of all, the cultivation device of the present invention realized as described above is different from the conventional hydroponic cultivation in which water is supplied by applying capillary action, and the cultivation device uses the water stored at the bottom of the liquid tank 7 for cultivation. The structure is such that Liquid L is first lifted to the top of the rooting material, and then spread and permeated downward through the rooting material, making the water retention rate within the rooting material extremely stable. This stable water retention rate is ensured and over-humidity is avoided.
It becomes easier for air to flow in from 1, 11, . . . , creating an extremely favorable environment for root growth in terms of water supply and oxygen supply. This effect is particularly effective when using natural soil with excellent water retention as a rooting material, and as a result, cultivation of plants that require natural soil, which was nearly impossible until now, is now possible through hydroponic cultivation. This will also become possible in cultivation, which will increase the variety of plants that can be admired.

On the other hand, when the inner container 1 shown in Embodiment 2 is adopted, it is easier to maintain the posture of the plant than when the water supply adjustment pipe 6 is simply made to protrude into the rooting material storage recess 2.
This has the effect of making it easier to pack the rooting material in a state where the roots are evenly distributed around the surrounding area, which makes the cultivation container easier to handle. This will also have the effect of increasing the number of roots, ensuring a more favorable environment for root growth, and making it possible to reliably prevent root rot and oxygen deficiency. In addition, by forming the leg portions 4, the inner container 1 can be left standing on its own while the water supply adjustment pipe 6 remains adjusted, making it easier to perform subsequent work, and using water and culture solution during the cultivation process. It also has the effect of making it easier to inspect and replenish L.

[0035] Furthermore, in the case where the water absorption adjustment pipe 1 shown in Examples 3 and 4 is adopted and the amount of liquid in the rooting material can be freely adjusted, the water retention rate in the rooting material is The cultivation container can be adjusted to the optimum conditions according to the type of plant to be cultivated and its growth conditions, and is especially suitable for cultivating special plants that require careful consideration of the amount of water used for cultivation management. can do.

As mentioned above, the cultivation tool of the present invention has a relatively simple structure and can be provided at low cost.
Water or culture solution is easy to manage, plants can be grown and appreciated in ideal conditions, and can be managed at appropriate intervals, making it ideal for home and business use when people are often away. Its usefulness as a cultivation tool is extremely high.Moreover, unlike previous tools of this kind, it can use natural soil in addition to artificial soil, and it can exhibit the outstanding feature that the range of cultivation species is not limited. It has become a thing.

[Brief explanation of the drawing]

The drawings are based on representative embodiments of the invention.

FIG. 1 is a central vertical sectional view of the most basic configuration of the present invention.

FIG. 2 is a perspective view showing only the inner container of the same as above.

FIG. 3 is a central longitudinal cross-sectional view of another embodiment.

FIG. 4 is a perspective view showing only the inner container of the same as above.

FIG. 5 is a central vertical sectional view of yet another embodiment.

FIG. 6 is a perspective view showing only the inner container of the same as above.

[Explanation of symbols]

1 Inner container 11 Same root hole 12 Same holding part 13 Same attachment part 14 Same base 15 Temporary fixing part 2 Rooting material storage recess 3 Ears 4 Legs 5 Water absorbing material 51 Same fine sand 6 Water absorption adjustment pipe 61 Upper end opening 62 Lower end opening 63 Water absorption prevention plug 7 Liquid tank 71 Same liquid volume regulation hole 72 Small hole for checking the same liquid level 73　　　　　　　　Same section

Claims (5)

[Claims] Claim 1: An inner container having a rooting material accommodating recess in which a large number of rooting holes are formed, and ears or legs for suspending the rooting material accommodating recess in a liquid tank. On the other hand, both ends are opened, and the hollow part is filled with a water absorption adjustment pipe made of a non-water permeable material filled with a water absorbing material. The openings are assembled as desired outside and below the inner container, while they are suspended in a liquid tank in which water or culture medium is stored, and the inner height of the rooting material accommodation recess of the upper end opening of the water absorption adjustment tube is By adjusting the position or opening area, adjusting the contact ratio of the lower opening with water or culture solution, or adjusting both the upper and lower openings, it is possible to insert the rooting material into the recess of the inner container. A cultivation tool that allows you to adjust the amount of water absorbed. 2. The inner container has an external shape approximately shaped like a wine glass or a cocktail glass, and a portion corresponding to the head of the same shape is inserted into a rooting material accommodating recess in which a large number of small holes are formed. , the part corresponding to the stem is used as the insertion part for the water absorption adjustment tube, and one or more water absorption adjustment pipes are combined with the insertion part so as to be vertically adjustable, and a part corresponding to the head is provided at the upper end for hanging the upper edge of the liquid tank. The cultivation tool according to claim 1, further comprising ears. 3. The inner container is formed into a substantially W-shaped or substantially inverted M-shaped cross section with a raised central portion,
Claim 1: A water absorption adjustment pipe is installed vertically using the central raised part as an attachment part, and an ear part for hooking the upper edge of the liquid tank is formed at the upper end of the outer periphery, and if necessary, a leg part is provided downwardly to protrude. Cultivation equipment described. 4. The cultivation tool according to claim 1, wherein the contact ratio of the lower end opening of the water absorption adjusting tube to the water or the culture solution is adjusted by removing a detachable water absorption prevention stopper from the lower end opening. 5. The water absorption adjustment tube is formed of a flexible, water-impermeable tube body, and the contact ratio of the lower end opening of the water absorption adjustment tube to water or culture solution is adjusted by bending the lower end portion of the water absorption adjustment tube. 2. The cultivation tool according to claim 1, wherein the lower end opening is brought into and out of the water or culture solution surface.