JPH0216618Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a cultivation bed for hydroponic cultivation.

<Prior art> Conventionally, long beds for hydroponic cultivation are provided with a bed base member with a slight inclination in the longitudinal direction, and the culture solution is supplied from the higher side and collected at the lower side. It is known that the bed base member is arranged horizontally and the culture solution is supplied from one end and collected at the other end, but in both cases, the culture solution is distributed in the longitudinal direction. It was configured to flow.

If the culture solution is configured to flow in the longitudinal direction of the bed base member as described above, it is extremely difficult to horizontally install the bed base member, which is usually 30 to 50 meters long, and requires considerable skill. and when tilting at a predetermined angle,
Similarly to the above, it is also difficult to arrange the entire bed base member at a constant inclination.

Furthermore, when the culture solution flows along the bed base member, the distance becomes long, and the quality of the culture solution changes due to temperature changes, flow speed changes, etc. between the culture solution supply side and the liquid collection side, and one It becomes difficult to apply a culture solution of the same quality to the entire plant placed on the bed base member. Moreover, when the bed base member is first installed, it maintains a horizontal and constant slope, but after long-term use, it may deform due to changes in the ground or the expansion and contraction of the bed frame and bed base member due to heat. The plant may become different from what it was when it was installed, and the culture solution may stagnate, causing roots that remain submerged in this area to rot due to lack of oxygen, or become overnourished due to excessive culture solution being applied. It was not favorable for the growth of.

Even when there is no deformation of the bed base member, the culture solution flows through the long bed base member, resulting in poor drainage and roots remaining immersed in the culture solution, resulting in vegetative growth due to excess nutrients. Or, it has the disadvantage of causing growth problems such as root rot due to lack of oxygen.

<Purpose of the present invention> The present invention was proposed in order to eliminate the above-mentioned drawbacks, and in order to maintain a constant quality of growth of cultivated plants, it is necessary to improve the quality of the culture solution in which the roots of cultivated plants are immersed. The purpose of the present invention is to provide a bed for hydroponic cultivation that can control the amount of nutrients and prevent poor growth due to excess nutrients and insufficient oxygen, and that is easy to install.

<Structure of the present invention> The present invention is a long hydroponic cultivation bed formed so that a culture solution can be supplied onto the bed base member, which has an inclined surface in a direction substantially perpendicular to the longitudinal direction of the bed. a bed base member having a plurality of concave grooves formed on its upper surface along the inclination direction; a water-permeable member placed on the bed base member that does not allow the roots of cultivated plants to penetrate; and the bed base. a liquid supply means disposed above near the high end edge of the member; a liquid collection means disposed below the low end edge of the bed base member; a bed cover for covering the upper part of the bed base member; This is a hydroponic cultivation bed consisting of:

<Example> The present invention will be explained below based on the example shown in the drawings.

In the figure, reference numeral 1 denotes a bed base member, which has an inclined surface in a direction substantially perpendicular to the longitudinal direction of the bed, and a plurality of grooves 2 are formed on the upper surface of the bed base member 1 along the inclined direction. It is formed.

FIG. 2 shows one embodiment of the bed base member 1, in which grooves 2 are formed on the upper surface of the flat plate-like member 1a, but the invention is not limited to this.
As shown in the figure, a corrugated member 1b may be employed and its troughs may be employed as grooves 2.

3 is a water permeable member placed on the bed base member 1, and is made of polyvinyl alcohol, polyester,
It is composed of a non-woven sheet-like body made of fibers such as nylon, has water absorption properties, and has fine pores through which the roots of the cultivated plants 7 cannot pass.

It is preferable that the pores have a diameter of 50 μm or less, for example.

It is preferable that the water-permeable member 3 is formed by bending an end near the lower edge of the bed base member 1 upward so that the roots of the cultivated plants 7 do not extend into the liquid collecting means 5, which will be described later.

Additionally, the ends near the high edges of the bed base member 1 are similarly bent upward (not shown) to prevent the roots of the cultivated plants 7 from coming into direct contact with the culture solution supplied from the liquid supply means 4, which will be described later. It is preferable to form.

Reference numeral 4 denotes a liquid supply means disposed above near the high end edge of the bed base member 1. As shown in the figure, this liquid supply means 4 has a plurality of through holes 4a for discharging the culture liquid into the pipe body, and has a plurality of through holes 4a for discharging the culture liquid into the tube body, so that the liquid supply means 4 has a plurality of through holes 4a for discharging the culture liquid into the tube body, and the liquid supply means 4 has a plurality of through holes 4a for discharging the culture liquid into the tube body, and has a plurality of through holes 4a for discharging the culture liquid into the tube body. It is configured so that culture solution can be supplied.

Note that the liquid supply means is not limited to one in which a plurality of through holes 4a are bored in a tube body, but also one in which the tube body is made of a porous material, or a concave channel having a U-shaped cross section or shape with an open top. The side wall portion may be opened as appropriate, or the bottom portion may be provided with a culture solution discharge hole.

Reference numeral 5 denotes a liquid collecting means disposed below the lower edge of the bed base member 1. This liquid collection means 5 is formed in a gutter shape as shown in the figure, and is configured to receive the culture liquid that has passed through the water permeable member 3 and flowed on the bed base member 1, and to flow it into a specific liquid tank. is forming. When forming the gutter-like liquid collecting means 5, a member having a U-shape or a U-shaped cross section may be used, but it may also be formed by forming a trench in the ground and covering the surface with a watertight film.

Furthermore, the liquid collecting means 5 is not limited to the gutter-like structure as described above, and may of course be a liquid tank for pooling the culture liquid.

6 is a bed cover for covering the upper part of the bed base member. This bed cover 6 supports the plants placed on the water-permeable member 3, and also provides insulation and heat insulation to prevent changes in the temperature of the culture solution due to solar heat, etc., or to prevent the generation of chlorella due to light irradiation.
It is made of a material with good light shielding properties.

8 is a support member for holding the bed base member 1 at a predetermined angle.

4 and 5 show an application example of the bed according to the present invention. In FIG. 4, the bed base member 11 is formed to be inclined so that the center is high and both sides have low edges. A liquid supply means 12 is provided above the center of the member 11, and liquid collection means 13 are provided below near both side edges.
13 was installed. 14 is a water permeable member. Further, in FIG. 5, the bed base members 21, 21 are arranged so that both sides of the bed are the high edges and the center of the bed is the low edge, and the liquid supply means 22, 22 are arranged on both sides of the bed. This is an example in which a liquid collection means 23 is installed in the center of the bed. 24
is a water permeable member.

Bed base members 1, 11, 21, liquid supply means 3, 1
2, 22 and the liquid collection means are formed into appropriate lengths and connected to form a bed; the bed base members 1, 11, 21; the liquid supply means 3, 12, 22; and the liquid collection means 4, 13. , 23, for example, bed base members 1, 11, 21 and liquid supply means 3,
12, 22, the bed base members 1, 11, 21, the liquid collection means 4, 13, 23, and forming the three into a unit of appropriate length and connecting these to form the bed are not included in the present invention. It can be done.

Note that the culture solution collected in the liquid collection means 4, 13, and 23 is sent to the liquid supply means again by the pump.

<Operations and Effects of the Present Invention> The present invention has the above-mentioned configuration and has the following effects.

The culture solution supplied from the liquid supply means flows on the water permeable member, passes through the water permeable member, flows down onto the bed base member, flows over the bed base member, and reaches the liquid collection means.

Therefore, the excessively supplied culture solution immediately flows down to the bottom of the water-permeable member, and the roots of the cultivated plants cannot pass through the water-permeable member, resulting in vegetative growth due to excess nutrients or roots due to lack of oxygen. It does not cause growth problems such as rot.

In particular, since the water permeable member is placed on the bed base member in contact with the convex portion of the groove provided on the upper surface of the bed base member, there is a gap between the water permeable member and the groove of the bed base member. A gap is created, and the air present in this gap passes through the water-permeable member and is supplied to the roots of the cultivated plants, so that the roots are also supplied with sufficient oxygen from the lower part of the water-permeable member.

Since the distance through which the culture solution flows over the bed base member is much shorter than in the past, the temperature of the supply solution remains approximately constant.

If tilted longitudinally, e.g. length 50
m, the difference in height between the high end and the low end is 0.5
If m, the inclination θ of the bed base member is θ≒1/100
It is extremely difficult to install the bed base member at a uniform angle, and even if the bed base member is installed at a uniform angle, the bed base member may deform due to long-term use and retain its original state. However, since the present invention has a structure in which the bed base member is tilted in a direction substantially perpendicular to the longitudinal direction, the tilt angle of the bed base member can be set to a large value, and the work is extremely easy. Even if the bed base member is slightly deformed, the culture solution does not stagnate, and no repair work is required. Note that this effect can be said to be similar when compared with the case where the bed base member is installed horizontally.

Since a plurality of grooves are provided on the upper surface of the bed base member in the direction in which the culture solution flows along the slope, the culture solution can be supplied along the grooves, and therefore the culture solution can be supplied in the longitudinal direction. Even if there are some undulations or undulations, the culture solution can be supplied along the grooves and can be uniformly applied to the entire root of the plant.

Since the structure is such that the culture solution flows in a direction approximately perpendicular to the longitudinal direction, the number of plants placed in the direction of flow is much smaller than in the longitudinal direction, and as a result, the flow of the culture solution by the roots of the plants is reduced. There is little resistance and almost no liquid supply spots occur.

Since the present invention has the above-mentioned effects, it can provide plants with an environment suitable for their growth, and is easy to install and can be used for a long time without repair work. It has practical value.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view showing one embodiment of the present invention, and FIGS. 2 and 3 are different embodiments of the bed base member. FIG. 5 is a longitudinal sectional view showing another embodiment of the bed according to the present invention. 1, 11, 21... bed base member, 2... groove, 3... water permeable member, 4, 12, 22... liquid supply means, 5, 13, 23... liquid collection means, 6... Bed covering.

Claims (1)

[Claims for Utility Model Registration] A long hydroponic cultivation bed formed so that a culture solution can be supplied onto the bed base member, which has an inclined surface in a direction substantially perpendicular to the longitudinal direction of the bed. , and a bed base member having a plurality of grooves formed on its upper surface along the inclination direction; a water-permeable member placed on the bed base member and not allowing penetration of the roots of cultivated plants; and the bed base member. a liquid supply means disposed above near the high end edge of the bed base member; a liquid collection means disposed below the low end edge of the bed base member; a bed covering body for covering the upper part of the bed base member; A bed for hydroponic cultivation.