JPS633736A - Fix planting device for hydroponics - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a planting device with a hole cap (also referred to as a planting panel) used for hydroponic cultivation of leafy vegetables or fruit vegetables.

(Prior Art) There is a method of cultivating plants using an aqueous solution containing dissolved nutrients without using soil, that is, a hydroponic cultivation method.

This method does not have the problem of continuous cropping like soil where the currants become old and the yield decreases, and the crops grow quickly and have high yields. It has the advantage of being readily available.

Hydroponic cultivation requires at least a bed (often a plastic container) in which the roots of the plants exist and an aqueous solution, and a planting device to hold the plants at regular intervals.

Among these, planters are required to be lightweight, able to float on water, and strong enough to withstand repeated use. Up until now, planting boards made of styrene foam have been mainly used as a device that satisfies this requirement.

[Problems to be Solved by the Invention] However, this Styrofoam planting board also had the following problems.

In other words, roots can invade the fused portions of the Styrofoam beads, eventually rotting and causing plant disease. This is particularly a problem for leafy vegetables, and is a problem that must be improved in planting boards that require repeated use.

In addition, Styrofoam planting boards have the drawbacks of being relatively easy to break and chip, and are difficult to punch holes in, and the light irradiation needs to be improved, so something even better has been desired.

Therefore, the present inventor made efforts to improve these problems, and developed a hydroponic planting device using a continuous extruded foam with closed cells and a thin metal film on the surface, and previously filed a patent application (patent application). (Sho 61-91361).

Although many of the conventional problems were solved with this fixed planting container, a new problem arose with repeated use: roots eventually invaded the side walls of the planting hole.

In other words, by using closed-cell polyethylene foam, root intrusion seemed to be solved at first, but with repeated use, it became affected by the surfactants used during cleaning. This caused environmental brittle fracture, which caused the problem of roots penetrating into the resulting defects.

What is surprising is the great vitality of the roots.

[Means for solving problems]

Therefore, the inventor of the present invention conducted extensive research in order to completely block the sides of the hole in the planting panel from the roots, and as a result, he discovered that this problem could be solved by attaching a hole cap to the planting hole, and arrived at the present invention.

That is, the present invention provides a planting device for hydroponic cultivation made of foamed resin in which a hole cap is attached to the planting hole.

The present invention will be described in detail below.

The hole cap for a planting hole used in the present invention refers to a cap that is provided to completely block the roots from the sides of the planting hole, and has a side wall that completely covers at least the sides of the planting hole. In order to securely attach the hole cap to a transplanter, it is preferable to make the outer diameter of the cylindrical body of the cap larger than the diameter of the planting hole.

Particularly preferred is one having a flange at the upper end as shown in FIG. It is also recommended that the length of the cylindrical body be longer than the thickness of the planting container so that the roots do not attach to the planting container and grow downward.

If you want to use the ball cap repeatedly while it is fixed, insert a pair of cylindrical bodies with a collar on one end and a thread on the other end into the planting hole and screw them together, as shown in Figure 2. The one that tightens is better.

On the other hand, if you need to use it removably,
Alternatively, in the case of shipping the whole cap, use a truncated conical cylindrical body with one end having a diameter larger than the diameter of the planting hole and the other end having a diameter smaller than the diameter of the planting hole, as shown in Fig. 3. It is better.

The material of the hole cap is not particularly limited, but synthetic resin is preferred because it has excellent properties such as ease of molding and no rust.

The thickness of the cylindrical body and flange that make up the hole cap is 1~
2. It is enough if you are familiar with it.

It is desirable that its size and shape match the diameter and shape of the planting hole.

Any porous resin can be used as the foamed resin serving as the base material of the planter of the present invention. However, continuous extruded foams with closed cells are particularly preferred.

Here, having closed cells means that the closed cell ratio is 90% or more as measured by the closed cell ratio measurement method using ASTH.

Continuous extruded foam with closed cells is good for its insulation properties,
This is because it has an excellent heat retention effect and can prevent transpiration of the culture solution.

Among continuous extruded foams having closed cells, polyethylene foam, especially low-density polyethylene foam, is superior. This is because when it is made into a planting device, it has the advantage of being strong with less cracking and chipping, and can also be punched (drilled) to form a planting hole.

Light management is especially important for successful hydroponic cultivation.

For this reason, it is preferable to use a planter in which a gold aH film that causes diffused reflection of light is provided on the surface of a foamed resin plate.

Here, the metal thin film may be any metal thin film that reflects light, but an aluminum or vapor-deposited film is preferable from the viewpoint of economy and availability.

Particularly excellent is an aluminum vapor-deposited film in which an aluminum vapor-deposited film is sandwiched between a transparent polyethylene terephthalate film and a nylon woven or knitted fabric or a polyethylene film (PE film). With the upper layer PET film,
It prevents the aluminum vapor-deposited film from peeling off and does not stain easily.
Also, cleaning becomes easier.

In addition, when the lower layer is made of PE film, P [helps in fixing with the foam and enables strong thermal fusion.

To fix this vapor-deposited aluminum film on a foamed resin board, first heat the film to a predetermined temperature using a heating machine, and then use a pressure roller with a certain pattern on the surface to fix the foamed resin board (for example, high-density polyethylene foam). This is done by crimping it onto a plate). As mentioned above, the PE film and PE foam on the three-layer film side are thermally fused,
Firmly fixed.

Incidentally, the surface pattern of the pressure roller can be provided with a surface shape in which diffused reflection occurs on the foam surface by, for example, taking a pyramid-like uneven shape.

The shape of the planter of the present invention is set according to the shape of the cultivation bed, but it is usually a rectangular plate.

Also, the thickness is set depending on the cultivated crop, but it is 25 to 30
m is enough. In any case, it needs to be buoyant and thick enough to withstand repeated use and support the weight of the crops above.

The planting hole is a hole in which the sown seeds germinate and the grown seedlings are held, and is used by inserting a small piece of urethane that is slightly larger than the hole. A hole cutout is attached to the hole. The shape of the hole can be arbitrarily selected, such as circular or square.

In the hydroponic planting device of the present invention, plants to be grown are transplanted together with the aforementioned urethane pieces into a hole pot attached to a planting hole, and then floated on the aqueous solution of the bed (leafy vegetables) or hung on the side wall of the bed ( fruits and vegetables).

In addition, in a planting device with a metal thin film provided on the surface, which is a preferred embodiment of the hydroponic planting device of the present invention, the light that is diffusely reflected by the metal thin film is added to the normal irradiation light and is irradiated to the plants. As a result of light hitting the underside of leaves that are in the shade, photosynthesis, which is the basis for plant growth, becomes more active and growth is promoted.

In addition, in the case of fruits and vegetables, it also has the effect of promoting growth and improving the coloring of the fruit surface (especially in the shaded areas), thereby improving quality.

〔Example〕

The present invention will be explained below with reference to examples, but the present invention is not limited to these examples.

Example 1 Thickness: 30. Three layers of polyethylene terephthalate film/aluminum deposited film/polyethylene film + M structure are applied to the top surface of a low-density polyethylene film with closed cells manufactured by a continuous extrusion method (manufactured by Asahi Kasei Corporation, Suntec Film (registered trademark)). The aluminum vapor-deposited film was placed so that the polyethylene film side was in contact with the polyethylene film, and heated in a heating oven.

Next, the two are crimped together using a crimping roll with a pyramid-shaped stamp on the surface.

The polyethylene film and the polyethylene film of the aluminum vapor-deposited film are heat-sealed and firmly fixed to each other. Cut this board into pieces measuring 45cm long x 6occm wide, then cut 4 pieces at 11cm intervals from 6cm from the edge in the vertical direction, and 8 pieces at 7cm intervals from 5cm from the edge in the horizontal direction, for a total of 32 pieces. Drill a circular hole with a diameter of 2.5 cm.

A plastic cylinder (thickness: 1.5 cm) having an outer diameter of 2.7 cm and a length of 3.5 cm and having a 4 cm diameter flange at the upper end as shown in FIG. 1 (A>) was inserted and attached to each person.

Next, a small piece of urethane foam with a square size of 2 to 3 cm that holds the mitsuba seedlings (seeds of mitsuba were separately sown on the urethane foam, germinated, and grown as seedlings) was planted in the above manner. Insert into the hole.

A cross-sectional view showing this state is shown in FIG. 1(B).

The planting vessel containing the honey leaf seedlings is placed on top of an aqueous solution placed in a bed made of Styrofoam and covered with a plastic film to prevent water leakage.

The hydroponic solution containing dissolved nutrients is circulated and supplied by a pump, and the required amount of air is also pumped in to continue hydroponic cultivation.

The mitsu leaves were harvested and shipped 42 days after planting, and the leaves were of good color and had grown well, producing first-class mitsu leaves.

Subsequently, this planting device was washed and used repeatedly for cultivating honey leaves in the same manner as above, and the same good results were obtained in each case.

In addition, the same cultivation was performed using the hole caps shown in FIGS. 2(A) and 3(A), and the same results as above were obtained.

For comparison, we tried cultivating honey leaves hydroponically under the same conditions using the same planting container except that no hole cap was attached to the planting hole, and the results were the same up to the first harvest. However, when it was washed with detergent and cultivated for a second time, roots were found to have invaded the foam from the side of the planting hole.

[Effects of the Invention] As explained above, even if the planting device for hydroponic cultivation of the present invention is used repeatedly, there is no root invasion into the planting device, which occurs in the past, and diseases caused by this do not occur. Occurrence can be prevented,
Coupled with the improvement in the strength of the material, the effect of greatly increasing the number of times the planter can be used is achieved.

[Brief explanation of the drawing]

Fig. 1 (A> is a perspective view showing an example of a ball cap with a flange, and Fig. 1 (B) is a sectional view showing a mode of use of the planter of the present invention using this. Fig. 2 ( A) is a perspective view showing an example of a hole cap with upper and lower flanges screwed together, and FIG. 2(B) is a sectional view showing how the planter of the present invention using this is used. Figure (A) is a perspective view showing an example of a truncated conical hole cap whose upper outer diameter is larger than the planting hole diameter and whose lower outer diameter is smaller, and Fig. 2 (B) is a perspective view of the hole cap of the present invention using this hole cap. It is a cross-sectional view showing how the planting device is used.Patent applicant Asahi Kasei Industries Co., Ltd. Agent Patent attorney No @ Kasaya Figure 1 Figure 2 Introduction Figure 3 Procedure Ne City official book (method) % formula % 1, Description of the case 1986 Patent Application No. 144898 2 Title of the invention Hydroponic planting device 3 Person making the amendment Relationship to the case Patent applicant 1-2-6 Dojimahama, Kita-ku, Osaka-shi, Osaka (003) ) Asahi Kasei Industries Co., Ltd. Representative Masami Seko 4, Agent Postal code 104 Room 802, Central Higashi Ginza, 2-15-15 Tsukiji, Chuo-ku, Tokyo August 26, 1986 "Explanation" column 7, details of the amendment

Claims (1)

[Claims] 1. A planting device for hydroponic cultivation made of foamed resin, in which a hole cap is attached to the planting hole. 2. The planting device for hydroponic cultivation according to claim 1, wherein the hole cap is a cylindrical body with a flange at the upper end. 3. Claim 1, characterized in that the hole cap is a pair of cylindrical bodies each having a flange at one end and a threaded end at the other end, which are inserted into a planting hole and screwed together. The described planting device for hydroponic cultivation. 4. Claim 1, characterized in that the hole cap is a truncated conical cylindrical body with one end having a diameter larger than the diameter of the planting hole and the other end having a diameter smaller than the diameter of the planting hole. Planting device for hydroponic cultivation. 5. A planter for hydroponic cultivation according to claim 1, characterized in that a thin metal film capable of diffusely reflecting light is fixed to the surface of the planter made of foamed resin. 6. The planting device for hydroponic cultivation according to claim 5, wherein the metal thin film is an aluminum vapor-deposited film. 7. The planting device for hydroponic cultivation according to claim 1, wherein the foamed resin is a polyethylene foam.