JPH0462692B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a hydroponic cultivation apparatus using corrugated plastic tubes.

[Prior art and its problems]

Conventional hydroponic cultivation equipment uses rockwool as a medium in a flat tank called a bed, on which a nutrient solution supply pipe is installed, and cultivated plants are placed at appropriate intervals. Common.

However, with this configuration, there are problems such as the installation of the bed, piping, etc., making the equipment large-scale and troublesome to install, and the flat layout restricting the installation location. . In addition, since the nutrient solution is soaked into rock wool that is spread flat, a large amount of nutrient solution is used.
Furthermore, the amount of evaporation increases, making it uneconomical.

[Means for solving problems and their effects]

In view of the problems of the prior art as described above, the present invention provides a hydroponic cultivation device that is easy to install, can be installed relatively freely, and requires less water and nutrient solution. Its structure is such that openings are formed at appropriate intervals in the longitudinal direction on the upper surface of a long corrugated plastic pipe in the installed state, and a culture medium such as rock wool is placed in the opening. It is characterized in that water or a nutrient solution is allowed to flow through the plastic tube.

Long corrugated plastic tubes are flexible, so
It can be easily transported anywhere in a rolled state, and can be freely installed in any installation location, such as a long and narrow place, a sloping place, or a winding place. Of course, if the area is flat, it can be easily handled by serpentine laying. Therefore, by simply laying a corrugated plastic tube filled with a culture medium such as rock wool in each opening, or by laying a corrugated plastic tube with an opening formed therein, a medium such as rock wool can be filled in each opening. It can be easily installed by simply filling it with the Of course, a suitable opening jig (such as an annular heater for melting plastic)
The openings may be formed after the corrugated plastic pipe has been installed by using a pipe.

Furthermore, since the corrugated plastic pipe serves as a passage for water or nutrient solution, piping for supplying water or nutrient solution is also extremely simple.

Furthermore, the amount of water or nutrient solution used can be saved because the water or nutrient solution is only absorbed intermittently into a culture medium such as rock wool, and evaporation is only small through the openings.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an embodiment of the invention. In the figure, reference numeral 1 denotes a long corrugated plastic tube, and openings 2 are formed on the upper surface of the tube at appropriate intervals in the longitudinal direction. Rock wool 3 for a culture medium is installed in each opening 2, and cultivated plants 4 are planted in the rock wool 3. In addition, a nutrient solution 5 necessary for growing plants 4 is passed through the corrugated plastic tube 1. Rockwool 3 absorbs and impregnates the nutrient solution 5,
It supplies water and nutrients to the roots of the plant 4.

The nutrient solution 5 is supplied from one end of the corrugated plastic tube 1 and discharged from the other end, but it is preferable to collect and circulate the discharged nutrient solution. Further, it is preferable that the corrugated plastic pipe 1 is installed with a slight inclination so that the nutrient solution can flow smoothly from one end to the other.

Since the corrugated plastic tube 1 is flexible, the installation pattern can be freely selected. It is particularly suitable for meandering installation on slopes, linear installation along roads and railways, and meandering installation on building walls and roofs.

The corrugated plastic tube 1 is not particularly limited, but it is preferable to use a corrugated hard polyethylene tube that is chemically stable and strong.

The rock wool 3 may be packed into the opening 2 in the form of a block as shown in the figure, but if the rock wool needs to be replaced, the rock wool can be packed in the surrounding wall and bottom with many holes (mesh pattern) as shown in Figure 2. It is convenient to install the liquid-permeable container 6 inside the opening and replace the entire container.

FIG. 3 shows another embodiment of the invention. This embodiment is a countermeasure for cases where the length of the corrugated plastic tube 1 is long and the nutrient solution 5 does not flow smoothly, or when there is a difference in the concentration of the nutrient solution 5 in the longitudinal direction. A thin tube 7 for supplying a nutrient solution is housed in the tube 1, and the nutrient solution 5 is supplied through the thin tube 7. When a plurality of thin tubes 7 are inserted, the length of each thin tube 7 is made to be different so that the nutrient solution is evenly distributed in the longitudinal direction.

FIG. 4 shows yet another embodiment of the invention. In this embodiment, the part 1a of the corrugated plastic tube 1 that accommodates the rock wool 3 is made thicker, and the other part 1b is made thinner. The rock wool storage part 1a requires a certain amount of volume because the roots of the plants 4 will grow there, but the other part 1b may be small because it is only necessary to drain the nutrient solution 5 therein.

FIG. 5 shows yet another embodiment of the invention. In this embodiment, a mesh pipe 8 is housed in a corrugated plastic pipe 1, and the roots of a plant 4 are allowed to grow along this mesh pipe 8.

In the above example, an example was explained in which a nutrient solution is passed through a corrugated plastic pipe, but it is also possible to flow water into a corrugated plastic pipe and supply nutrients from each opening (solid nutrients are also acceptable as long as they are water-soluble). You can also.

〔Effect of the invention〕

As explained above, the hydroponic cultivation device according to the present invention uses corrugated plastic pipes, so it is extremely easy to install, and has the advantage that hydroponic cultivation can be carried out anywhere without being restricted by the installation location. be. Furthermore, since the amount of water or nutrient solution used is small, it is economical and has the advantage of being suitable for hydroponic cultivation in areas with little water.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing one embodiment of the hydroponic cultivation device of the present invention, FIG. 2 is a perspective view of a rock wool container used in the device, FIGS. 3, 4, and 5.
The figures are a longitudinal cross-sectional view, a side view, and a cross-sectional view showing other embodiments of the present invention, respectively. 1 - corrugated plastic tube, 2 - opening, 3 - rock wool, 4 - cultivated plant, 5 - nutrient solution.

Claims (1)

[Scope of Claims] 1 Openings are formed at appropriate intervals in the longitudinal direction on the upper surface side of the long corrugated plastic pipe in the installed state, and a culture medium such as rock wool is placed in the openings, and the above-mentioned A hydroponic cultivation device characterized by allowing water or nutrient solution to flow through a corrugated plastic tube. 2. The hydroponic cultivation apparatus according to claim 1, wherein the rock wool is housed in a liquid-permeable container and installed in an opening. 3. The hydroponic cultivation apparatus according to claim 1, in which a thin tube for supplying water or a nutrient solution is housed in a corrugated plastic tube. 4. The hydroponic cultivation apparatus according to claim 1, wherein the corrugated plastic tube is a corrugated hard polyethylene tube.