JP2016063776A - Method for facilitating hydroponic cultivation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that to conventionally perform hydroponic cultivation, there is need for a system in which nutritious liquid is circulated or oxygen can be supplied to nutritious liquid by using air bubbles, for prevention of root rot, however, use of such a system outdoors is limited, for oxygen supply in such a way requires electric power, and has to be disadvantageous in costs.SOLUTION: In the method, through a container having gas permeability, sufficient quantity of oxygen is dissolved in nutritious liquid, and further, oxygen is supplied to the nutritious liquid via a support in a process in which the support absorbs the nutritious liquid by capillary action, and furthermore, oxygen can be supplied to roots from many recesses when the roots contact with the support having capillary action. Consequently, a system does not require positive oxygen supply means, can be utilized outdoors easily, and can suppress the costs low.SELECTED DRAWING: Figure 1

Description

It is related with the method of performing hydroponics simply.

In order to prevent root rot, hydroponics includes a system that circulates a nutrient solution or a system that supplies oxygen by putting an instrument that generates air bubbles into the nutrient solution.

Patent Publication 2013-106563 Patent Publication 2012-223176

Conventionally, in hydroponics, in order to prevent root rot of plants, as in Patent Document 1, a method of circulating a nutrient solution by a pump or generating air bubbles in the nutrient solution to dissolve oxygen is employed. However, such an oxygen supply system has a bottleneck in that it is necessary to supply power.

Also, as described in Patent Document 2, a method of passively supplying oxygen to the roots is proposed, assuming that a porous body such as pearlite is soil, but pearlite is expensive and difficult to handle. It is a neck.

In the present invention, a nutrient solution is filled in a gas permeable container, the nutrient solution is sucked up by a carrier having a capillary action, and the root is brought into contact with the carrier, thereby supplying oxygen sufficient for plant growth. To achieve.

Specifically, sufficient oxygen is dissolved in the nutrient solution through a gas-permeable container, and oxygen is supplied from the air even in the process of sucking the nutrient solution by capillary action, and the roots are capillary tubes. Even in the process of contacting a carrier having a phenomenon, oxygen can be supplied from a large number of voids to the root.

Here, the gas permeable container is preferably a gas permeable container of 10 g / m ^ 2 · 24h · atm or more, and specifically, a material such as polyethylene film, polystyrene film, polypropylene film, silicone rubber is used. However, in order to suppress evaporation of water vapor as much as possible, polyethylene having a low water vapor permeability is most preferable.

The container may be of any color, but the more transparent it is, the more algae that consume nutrients are likely to be generated, and the nutrient solution components are precipitated by sunlight. However, since the amount of liquid cannot be confirmed with black, it is not preferable.

Carriers with capillary action have fine irregularities that can have capillary action, are not toxic to plants, and can be anything that is not derived from plants or animals, but cheap microfiber fabrics are the most preferable.

In addition, the water supply to the root by capillary phenomenon is the same water supply method as soil cultivation performed on soil having the same capillary phenomenon, and enables oxygen supply to the root in the same manner as soil cultivation.

The price of the plant cultivation kit using the polyethylene bag and the microfiber dough is less than 25 yen per plant and is not achieved by other hydroponics systems.

For example, the simple hydroponic cultivation device “Mizuhata”, which is considered to be the cheapest among commercial products, is sold for 3980 yen per 24 shares, and the price per share is 165 yen. In addition, since “Mizuhata” supplies oxygen by air bubbles, it cannot be used without power supply. As for other products, there are few hydroponic cultivation devices and instruments that do not use electric power.

In addition, plant factories generally cultivate plants using a nutrient solution circulation system, but because of high equipment costs and running costs, they were weak in price competitiveness in the market.

By using the method of the present invention for a plant factory, the equipment cost can be kept low, and the running cost can be kept low because no electricity bill is required. In addition, once installed, no labor is required until harvesting, reducing labor costs.

1 is a diagram showing one embodiment of the present invention. 1 is a plant to grow, 2 is a carrier with capillarity, 3 is a gas-permeable container, 4 is a cylindrical hard tube to connect 2 and 3, 5 is nutrient solution, 6 is 3 to 4 The binding band for fixing is shown.

In order to carry out the method of the present invention, a gas-permeable container, a carrier having a capillary action, a nutrient solution, and a plant seed may be used, and the light source may be sunlight or artificial light.

Further, any number of carriers having a capillary action may be installed for one gas permeable container.

Fill a 30 x 55 cm polyethylene bag with a 500-fold diluted solution of hyponica stock solutions A and B, immerse the dough made of microfiber about 40 cm long as a carrier for plant cultivation, and let lettuce on top The seeds of Japanese radish and green pepper were placed and grown under sunlight.

As a result, in any vegetable, it was possible to harvest a vegetable having a size comparable to a commercially available vegetable.

The hydroponics method and kit of the present invention are suitable for cultivation on a home veranda or the like because of the advantage of being inexpensive and not using electric power.

In plant factories, it is possible to cultivate vegetables with high market competitiveness in terms of price because of the advantage of being inexpensive and not using electric power.

Furthermore, this method is considered to be capable of absorbing nutrients automatically and supplying them to the roots and supplying oxygen even in a spacecraft without gravity, because the plant cultivation carrier has a capillary phenomenon. However, since there is no gravity, there is an excessive supply of nutrient solution due to capillary action, there is a concern that an air layer is not formed between the root and the carrier, and oxygen supply efficiency deteriorates. In that case, it is considered that it is necessary to use a moisture sensor and a nutrient solution supply pump separately, and to always make the carrier have an optimal water content.

In the conventional method, air bubbles cannot be generated in a zero-gravity space, and since the circulation system using a pump can only be used in a closed system, it is difficult to supply oxygen and cannot be used in a spacecraft as it is.

Claims (5)

Plant cultivation method of sucking up nutrient solution filled in gas permeable container with carrier with capillary action and supplying nutrients by contacting the carrier with root Kit with gas permeable container and carrier with capillary action The kit according to claim 2, wherein the gas permeable container is a bag made of polyethylene film. The kit according to claim 2, wherein the carrier having a capillary action is a microfiber fabric. A method of cultivating a plant using microfiber dough as a carrier and contacting the root with the carrier