JPH09224509A - Panel for solution culture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a panel capable of suppressing the reproduction of photophilic microorganisms in culture solution giving bad influence to a plant and preventing leaf burn caused by reflected light from a panel at the time of the solution culture of the plant planted at the shading-processed panel. SOLUTION: Many planting holes 2 are formed and shading processing is given in addition. To put it in the concrete, for example, the many planting holes are formed at a panel consisting of colored expanded polystyrene, otherwise a shading sheet such as a colored plastic sheet is stuck to a non-colored expanded polystyrene panel provided with the many planting holes. As a color to color is desirably blue, green etc. In addition the panel is generally used for solution culture by inserting polyurethane foam block carrying a plant seedling 3 to the planting hole 2 and then floating the panel on the culture solution 6.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a panel as a plant support used for hydroponic cultivation.

[0002]

2. Description of the Related Art Conventionally, an uncolored polystyrene foam having a large number of planting holes is used as the panel, and a polyurethane foam block carrying a plant seedling is inserted into the planting holes of the panel to prepare a culture solution. Hydroponics is performed by floating the panel on the culture solution in the tank.

[0003]

As described above, since a polystyrene foam which is not colored and has a high light transmittance is conventionally used, it can be used in the culture solution in the culture solution tank, that is, in the rhizosphere. Of light, which promotes the reproduction of photophilic microorganisms present in the culture broth and causes serious diseases to plants. Further, the pH of the culture solution changes greatly due to the propagation of the photophilic microorganisms, which makes the culture solution unstable and difficult to control, which adversely affects the plants. Furthermore, when strong sunlight is applied in summer, etc., the uncolored (white) panel reflects light and the lower leaves are damaged, causing so-called leaf burn.

[0004]

[Means for Solving the Problems] As a means for solving the above conventional problems, the present invention provides a panel (1) provided with a large number of planting holes (2), wherein the panel (1) includes The present invention provides a hydroponic panel that has been subjected to a light-shielding treatment, wherein the panel (1) is made of polystyrene foam, and provides a hydroponic panel that is light-shielded by coloring. To do.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A specific example of the present invention is shown in FIGS. The panel (1) shown in FIG. 1 is made of colored polystyrene foam and is provided with a large number of planting holes (2). Coloring of the polystyrene foam is black, blue, red, green,
Any color such as yellow, purple and brown can be used, but preferable colors include blue and green. Due to such coloring, the light transmittance and light reflectance of the polystyrene foam are greatly reduced.

As shown in FIG. 2, the panel (1) has plant seedlings.
A polyurethane foam block (4) carrying (3) is inserted and then the panel (1) is a culture solution in a culture solution tank (5).
It is floated on (6). The culture solution (6) in the culture solution tank (5) is circulated between the culture solution tank (5) and the culture solution storage tank (9) via the circulation path (8) by the circulation pump (7). . Then, in the culture solution storage tank (9), the pH and conductivity of the culture solution (6) are measured by the pH sensor (10) and the conductivity sensor (11), and the measured values are stored in the controller (12). Input the controller
Supply route (14) from stock solution tank (13) of culture solution (6) by (12)
Feed pump (1) to supply the stock solution to the culture solution storage tank (9) via
5) is operated, and a predetermined amount of the stock solution is supplied from the stock solution tank (13) to the culture solution storage tank (9), and the culture solution (6) in the culture solution storage tank (9)
Is maintained at proper pH and proper conductivity.

In hydroponics, the culture solution (6)
Between the culture solution tank (5) and the culture solution storage tank (9),
Plant seedlings planted on the panel (1) through the polyurethane foam block (4) by controlling H and conductivity to appropriate values.
(3) grows, but since the panel (1) is shaded by coloring it, the amount of light reaching the rhizosphere is reduced, and thus the aerophilic microorganisms present in the culture solution (6) Can suppress the breeding of the.

FIG. 3 shows another embodiment of the present invention.
In this example, a panel (21) provided with a large number of planting holes (22)
Is made of uncolored polystyrene foam, and a light-shielding sheet (23) is attached to the upper surface of the panel (21). The light shielding sheet
(23) is a light-shielding sheet such as a colored plastic sheet, a fiber sheet, a waterproof paper sheet, etc., and may be attached not only to the upper surface of the panel (21) but also to the upper and lower surfaces. As the panel, plastic foam such as polyethylene foam and polypropylene foam is used in addition to polystyrene foam.

[0009]

INDUSTRIAL APPLICABILITY In the present invention, since the panel used for hydroponic cultivation is subjected to light-shielding treatment, the light reaching the rhizosphere is reduced and the reflection of light is reduced when the plants planted on the panel are hydroponic. Is also reduced, which suppresses the growth of photophilic microorganisms present in the culture broth, which can prevent plants from being affected by disease and leaf burns of plants, and A large change in pH is also prevented, and smooth control becomes possible. Therefore, in the present invention, the growth of plants is promoted, and the quality and yield are greatly improved.

[Brief description of drawings]

 1 and 2 show one specific example of the present invention.

FIG. 1 is a perspective view of a panel.

[Figure 2] Hydroponics system diagram

FIG. 3 is a panel cross-sectional view of another specific example.

[Explanation of symbols]

 1,21 Panel 2,22 Planting hole 23 Shading sheet

Claims (3)

[Claims] 1. A panel for hydroponic cultivation, which is a panel provided with a large number of planting holes, the panel being subjected to a light-shielding treatment. 2. The panel for hydroponics according to claim 1, wherein the panel is made of polystyrene foam. 3. The panel for hydroponic cultivation according to claim 2, wherein the polystyrene foam is light-shielded by being colored.