JPH0213331A - Nursery device - Google Patents

Abstract

PURPOSE:To obtain a nursery device equipped with a nursery box having a far infrared irradiator at the bottom thereof and a sterilizer and capable of providing the optimum nursery environmental condition growth promotion of a plant body in processes of nursing seeds and growing and acclimating plant cultured tissues. CONSTITUTION:A nursery box 1 having a far infrared ray irradiator 3 at the bottom thereof and a sterilizer installed in the course of a culture solution circuit 4 formed by connecting the above-mentioned nursery box 1 and a culture solution tank 5 are provided. A culture solution is passed from the tank 5 through a feed pipe (4a), fed into the box 1, then passed through a drain pipe (4b) and returned to the tank 5. Foreign materials, such as molds, are removed with a filter 7 in the returning course from the box 1 to the tank 5 to sterilize the culture solution with the far infrared ray irradiator 3.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a seedling raising device, and its purpose is to raise seedlings,
It is an object of the present invention to provide a seedling-raising device that can provide optimal seedling-raising environmental conditions during the growth and acclimatization process in plant culture Mi fabric, and also promotes the growth of plants.

(Prior art and its problems) In recent years, hydroponic cultivation of vegetables has been actively carried out and is being produced efficiently commercially.

Furthermore, seedling raising equipment that adjusts environmental conditions such as environmental gas temperature, humidity, light, and culture fluid has been developed, further improving its productivity.

However, the above-mentioned seedling-raising equipment only allows for mass production by adjusting the environmental conditions to those suitable for the plants, and does not speed up the growth of the plants, so it takes a long time before harvesting. requires a long date and time.

Additionally, advances in biotechnology have led to the improvement of varieties that can be harvested in a short period of time, but this is not very common and is limited to a small number of varieties.

In light of the above-mentioned circumstances, there is a strong demand in the industry for the early development of a seedling-raising device that can harvest plants in a short period of time by promoting their growth.

(Means for Solving the Problem) The present invention relates to a seedling-raising device, including a seedling-raising box provided with a far-infrared radiation device at the bottom, and a culture solution circulation path formed by connecting the seedling-growing box and a culture solution tank. An attempt was made to solve the above problems by providing a seedling growing device characterized by comprising a sterilizing device installed in the seedling raising device.

An embodiment of the present invention will be described below based on the drawings.

(Embodiment) FIG. 1 is an overall configuration diagram of a seedling raising device according to an embodiment of the present invention.

In the figure, (1) is a seedling-raising box, and a seedling bed (2) is provided in the lower part of the box.

This seedbed (2) consists of a tray made of synthetic resin that is integrally formed with a large number of pots having water holes in the vertical and horizontal directions, and each pot is filled with a culture medium support material such as polyester fiber or cellulose.

A far infrared radiation device (3) is installed at the bottom of the seedling raising box.
is provided, and far-infrared rays are radiated toward the seedbed (2).

This far-infrared ray emitting device (3) is not limited to being installed inside the seedling growing box, but may be installed outside the box.

The above-mentioned far-infrared radiation device (3) was adopted because the far-infrared radiation causes water molecules in the culture solution to resonate, which activates the water molecules and prevents the epidermal cells of the root hairs of the plant from taking in water. This is to promote this.

In order to activate water molecules, it is sufficient to raise the water temperature of the culture solution to a high temperature, but raising the temperature of the culture solution may cause changes in the components of the culture solution or damage the plant itself, which is inconvenient. It is.

Therefore, by irradiating the plant with far infrared rays, it is possible to promote the uptake of water molecules, oxygen molecules, metal ions, etc. through the root hairs, without raising the temperature of the culture solution, and the growth of the plant is promoted.

Therefore, any means that can irradiate far-infrared rays to the root hairs of plants may be suitably employed, and far-infrared rays can be coated on the partition wall of the seedling bed (2) or the inner bottom surface of the seedling-growing box (1). It is also suitably adopted to do so.

Furthermore, since far infrared rays have the ability to maintain activated water molecules, they also have the effect of keeping the culture solution warm.

Next, the culture solution circulation path (4) will be explained.

The culture solution circulation path (4) is such that the seedling raising box (1) is connected to the culture solution tank (
5) and a roller pump (6), and a filter (4b) for removing mold and other foreign substances from the culture solution is installed in the middle of the liquid pipe (4b).
7) is installed.

In the middle of the culture solution circulation path (4), the culture solution is sterilized by a means that does not cause a change in the components of the culture solution.

The sterilization means is not particularly limited, but it is desirable to use a far-infrared radiation device (8).

The reason for this is that if the above-mentioned far-infrared radiation device (8) is adopted, the culture medium is directly irradiated with far-infrared rays, so it is not affected by the material or diameter of the tube, and it also prevents changes in the composition of the culture medium. This is because the culture solution can be sterilized without causing any problems.

In addition, if the tube is made of a material other than metal or its outer surface is made of oxidized metal, the same sterilization effect as above can be expected even with far-infrared irradiation from outside the tube.

Furthermore, an oxygen cylinder (10) is connected to the culture solution tank (5) via a pressure reducing valve (9), and by dissolving oxygen in the culture solution, the roots of the plants in the seedling raising box (1) are sufficiently fed. I try to give them enough oxygen.

It is also possible to install an ozone generator in the culture fluid circulation path (4), and the ozone generated by this device enhances the sterilizing power and also decomposes ozone to become oxygen. There is no need to install a cylinder (10).

Hereinafter, other configurations of the seedling raising device according to the present invention will be explained.

The seedling raising box (1) is placed on the top plate of the seedling raising box (1).
) is connected to an atmospheric gas circulation path (11) that takes out the atmospheric gas and returns it to the seedling-raising box (1), and a temperature/hygrometer (1
2) sensor (13), an oxygen concentration meter (14), a carbon dioxide concentration meter (15), which respectively measure the concentration of oxygen, carbon dioxide, ethylene gas, etc. contained in the atmospheric gas in the seedling raising box (1), An ethylene gas concentration meter (16), a chiller unit (17) to adjust the temperature of the gas, and a filter (18) to remove foreign matter are provided.

Furthermore, inside the seedling raising box (1), a perforated tube (19) with a plurality of intake holes perforated at appropriate intervals vertically is suspended from the outlet of the top plate of the seedling raising box (1). It is attached and its lower end reaches close to the seed bed (2).

Each of the gas concentration meters described above has a pump unit, and the pump unit causes the atmospheric gas to flow through the atmospheric gas circulation path (11) in the seedling growing box (1) and return to the seedling growing box (1). .

Further, an environment regulating gas supply path (20) and an air supply path (21) are connected to the seedling growing box (1).

The environment regulating gas supply path (20) is connected to the seedling growing box (
1) In order to adjust the gas environment inside, carbon dioxide and ethylene gas are supplied to the seedling raising box (1) as environment regulating gas, and the environment regulating gas supply source is connected to the three-way switching valve (22) in the middle. The side branches into two, and the carbon dioxide gas cylinder (2
4) and an ethylene gas cylinder (25).

Then, the seedling raising box (
On the 1) side, a gas flow HJI control valve (26) and a filter (27) for removing foreign matter are incorporated.

The carbon dioxide gas cylinder (24) used is an air base mixed with 5% carbon dioxide, and the ethylene gas cylinder (25) is an air base mixed with 0.1 to 0.9% ethylene gas. is used.

On the other hand, the air supply path (21) is for supplying dry air from the air cylinder (28) to the seedling growing box (1) in order to adjust the humidity inside the seedling growing box (1). In the middle of (21), there is a pressure reducing valve (29) and an air flow meter (30) having an air flow control valve (30a),
A filter (31) for removing foreign matter is provided, and an air flow rate control valve (30a) is manually operated.

(32) is a controller that automatically controls the gas flow rate control valve (26) by receiving a signal from the carbon dioxide concentration meter (15) or ethylene gas concentration meter (16) by switching the switch (33). , this controller (
32) is a gas flow control valve (26) and a three-way switching valve (2
2) is built into the control box (34).

The operation of this controller (32) will be explained later.

(35) is an artificial light source for raising seedlings consisting of a fluorescent lamp that emits daylight color.As shown in Figure 1, this artificial light source (35) is placed above the seedling raising box (1) and is illuminated through a reflector (36). and is attached to the lower surface of the plate-shaped support (37). The brightness of the artificial light source (35) can be freely adjusted by changing the applied voltage using a variable resistor or the like.

The support body (37) is attached to the frame so as to be slidable left and right by a guide provided on the frame, and is swung left and right by a swinging mechanism.

This swinging mechanism consists of a disk-shaped eccentric cam installed near one end of the frame and a compression spring installed at the other end. The support body (37) is constantly urged by the compression spring so as to be in contact with the eccentric cam.

Therefore, the eccentric cam is swung left and right by the motor by the difference in dimension between the short axis and the long axis.

The swinging mechanism is not limited to the one in the embodiment, and various known swinging mechanisms may be used, such as using a cylinder to swing the support body (37), using a crank mechanism, or using a combination of magnets and electromagnetic wefts. The support body (37) is not limited to the plate shape as in the embodiment, but may be of various shapes such as a rectangular frame shape.

In addition, the light amount controller (
A light meter (39) connected to the light meter (38) is installed, and the light amount is adjusted so that the measured value of this light meter (39) matches the light amount value set and input to the light amount controller. By inputting settings to the controller (38), the artificial light source (35) is automatically controlled.

Incidentally, by coating the inner surface of the canopy of the artificial light source (35) with the far-infrared emitting agent, growth can be further promoted.

The reason for this is that the far-infrared emitting agent receives heat from an artificial light source (35) and emits far-infrared rays, which are directly irradiated to the plant body, activating water molecules in the plant body, and causing the carbon dioxide assimilation reaction in the plant body. This is because the growth of plants is promoted by promoting metabolism and further promoting the growth of plants.

The operation of the seedling raising device according to an embodiment of the present invention configured as described above will now be described.

First, the culture solution is passed from the culture solution tank (5) through the supply pipe (4a) by the roller pump (6) to the seedling growing box (1).
) and is further returned to the culture solution tank (5) through the drain pipe (4b).

Then, on the way back from the seedling raising box (1) to the culture solution tank (5), mold and other foreign substances are removed by a filter (7), and sterilized by a far-infrared radiation device (8).

When the culture solution is circulated by the roller pump in this way, the culture solution passes through the roller pump (6) while being confined inside the tubes (4a) and (4b), so sterilization and foreign substances may get mixed in when passing through the pump. can be reliably prevented.

In addition, if the culture solution sterilized by the far-infrared radiation device (8) as described above is returned to the culture solution tank (5) and supplied to the seedling-raising box (1) again, contamination with bacteria when passing through the roller pump (6) can be avoided. Coupled with this, the far-infrared irradiation sterilizes the culture solution without raising the temperature of the solution, so there is no change in the components of the culture solution, and there is no need to worry about any negative effects on plant growth.

The culture solution in the seedling raising box (1) supplied as described above is efficiently taken up by the root hairs by far infrared rays, and the activated water molecules promote growth by promoting carbon dioxide assimilation and metabolism in the plant body. is promoted.

Next, to explain the measurement and control of the gas environment, temperature and humidity, the atmospheric gas in the seedling raising box (1) is sucked by the pump unit from each suction hole of the perforated cylinder (19) and is passed through the environmental gas circulation path. 11).

Then, the temperature and humidity are detected by the sensor (13) of the temperature and humidity meter (12), and the concentrations of oxygen, carbon dioxide, and ethylene gas contained in this gas are measured by the gas concentration meter (14), ( 15), (16).

After the measurement, the atmospheric gas is heated or cooled by a chiller unit (17), foreign substances are removed by a filter (18), and then returned to the seedling-growing box (1).

While circulating the atmospheric gas in the seedling raising box (1) in this way, the temperature/hygrometer installed in the middle of the atmospheric gas circulation path (11) and the gas concentration meters (14), (15), (
16), the atmospheric gas inside the seedling raising box (1) is stirred and almost homogenized by gas circulation, and the upper and lower inside of the seedling raising box (1) is Since the environmental gas can be sucked and extracted from several locations, the average temperature and humidity of the entire interior of the seedling growing box (1) and the average concentration of the environmental control gas can be measured more accurately.

To measure the carbon dioxide concentration in the seedling raising box (1), switch the three-way switching valve (22) to the carbon dioxide gas cylinder (24), and turn the switch (33) to the carbon dioxide concentration meter (as shown in Figure 1).
15) is automatically controlled.

That is, when the switch (33) is switched to the carbon dioxide concentration meter (15), a signal regarding the measured carbon dioxide concentration is sent from the carbon dioxide concentration meter (15) to the controller (32).

This controller (32) compares the measured value of the carbon dioxide concentration with a pre-input set value, and adjusts the gas flow rate with a signal that controls the opening degree of the gas flow rate control valve (26) so that the two match. is sent to the valve (26).

As a result, the opening degree of the gas flow rate control valve (26) is automatically controlled, and the flow from the carbon dioxide gas cylinder (24) to the seedling box (
1) The concentration of carbon dioxide gas supplied to the device is adjusted and maintained at a set value.

Therefore, by changing the set value of the controller (32), the carbon dioxide concentration in the seedling growing box (1) can be automatically adjusted to a desired concentration.

Similarly, regarding the ethylene gas concentration, the three-way switching valve (
Switch 22) to the ethylene gas cylinder (25),
By switching the switch (33) to the ethylene gas concentration meter (16), it is possible to automatically control the set value inputted in advance to the controller (32).

On the other hand, the temperature inside the seedling raising box (1) is controlled by manually adjusting the temperature of the chiller unit I-(17) while checking the temperature displayed on the temperature/hygrometer (12). This is done by cooling or heating the gas to a predetermined temperature using a chiller (17).

Similarly, the humidity inside the seedling raising box (1) can be controlled by manually adjusting the air flow control valve (30a) of the air flow meter (30) while checking the humidity displayed on the temperature/hygrometer (12). This is done by increasing, decreasing or stopping the supply of dry air from the bong (28).

Although this device does not have a humidifying means, if the supply of dry air is stopped or reduced to a very small amount, the humidity will naturally rise due to the evaporation of the culture solution that always stays at the bottom of the seedling raising box (1), so it is necessary to humidify it. There is no need to provide means.

Next, illumination is performed while swinging the support (37) to which the artificial light source (35) is attached using the swing mechanism, as described above.

Therefore, even if there is a light-blocking object such as the atmospheric gas circulation path (11) above the seedling-raising box (1), there will be no part that will always be in the shadow, and the amount of light received by each part of the seedling-raising box (1) will also be lower than that of the artificial light source. 35), the illumination becomes uniform because it is approximately averaged by the fluctuation.

In addition, the amount of light can be adjusted using artificial light fi using a variable resistor, etc.
This can be easily done by changing the voltage applied to (35) or by changing the number of artificial light sources (35) to be turned on, and especially when the two are combined, it becomes possible to adjust the light amount over a wider range.

In that case, the amount of light is measured by the light meter (39), and the artificial light source (35) is automatically controlled by the light amount controller (38), so that the amount of light can be accurately adjusted to the desired amount.

Although the seedling raising apparatus of the present invention has been described above based on one embodiment, it goes without saying that the present invention is not limited to this embodiment, and can be modified in various ways.

For example, a plurality of seedling growing boxes (1) are installed, the gas circulation path (11) is branched, and an on-off valve is provided in each branch path,
By connecting each seedling box, different types of plants can be placed in each seedling box and seedlings can be raised in an environment suitable for each plant, making it possible to raise seedlings efficiently. It is possible.

Specifically, sulfur dioxide gas, nitrous oxide gas, ozone, etc.
A gas concentration meter for measuring the concentration of environmental control gases other than the examples was added to the atmosphere gas circulation path (11), and cylinders of these environment control gases were connected to the atmosphere gas supply path (11) via the switching valve. By connecting, it is possible to change the concentration of many types of environmental conditioning gases so that they can be measured and controlled.

Furthermore, the temperature and humidity can be automatically controlled by a controller, a chiller unit (17) for gas temperature control can be incorporated into the environmental control gas supply path (20) and the air supply path (21), and the corresponding Changing the chiller unit (17) to various known heaters or various coolers, or installing a chiller unit in the culture solution tank (3) to control the temperature of the culture solution,
All of these are included in this invention.

(Effects of the Invention) As detailed above, the seedling raising device according to the present invention includes a seedling raising box provided with a far-infrared radiation device at the bottom, and a culture solution circulation path formed by connecting the seedling raising box and a culture solution tank. This seedling-raising device is characterized by being equipped with a sterilization device installed in the middle of the seedling-raising device, so that it can provide optimal seedling-raising environmental conditions and promote plant growth during the process of raising seeds, growing in plant culture tissue, and acclimating. This has the effect that it can be provided.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram showing the overall configuration of an embodiment of the seedling raising device of the present invention. (1)...Seedling raising box (3)...Far infrared radiation device (4)...Culture solution circulation path (5)...Culture solution tank

Claims (1)

[Claims] (1) A seedling raising box equipped with a far-infrared ray emitting device at the bottom, and a sterilizing device installed in the middle of a culture solution circulation path formed by connecting the seedling growing box and a culture solution tank. Seedling raising equipment.