JP5592620B2 - Plant growing apparatus and plant growing method - Google Patents

Description

  The present invention relates to a plant growing apparatus and a plant growing method for growing a plant having a high content of an antioxidant substance.

  Conventionally, Patent Document 1 discloses a plant growing method for increasing ascorbic acid and / or polyphenols in a plant by irradiating the plant with UV-B and applying stress to the plant in growing the plant.

  However, in the conventional example of irradiating a plant with UV-B, UV-B is irradiated only to a part of the plant to be irradiated, and between the leaves and between the leaves. In addition, UV-B is not irradiated on the shades of leaves and stems, or in the shade of obstacles or in the lower part of plants, and it is difficult to sufficiently exert the effect of increasing ascorbic acid and / or polyphenols in plants. There is a problem.

JP 2008-086272 A

  The present invention was invented in view of the problems of the above-described conventional example, and effectively increases the content of antioxidant substances in the plant by effectively stressing various parts of the plant to be cultivated. It is an object of the present invention to provide a plant growing apparatus and a plant growing method that can be used.

  In order to solve the above problems, the present invention has the following configuration.

The plant growing apparatus 1 of the present invention includes a radical and hydrogen peroxide, which is a fine particle liquid 3 containing a substance for applying stress to the plant 2 to increase the content of the antioxidant substance in the plant 2. It has a function of generating and releasing charged fine particle liquid .

By adopting such a configuration, the fine particle liquid 3 containing a substance for increasing the content of the antioxidant substance in the plant 2 by applying stress to the plant 2 in the plant growing device 1 of the present invention. Can be generated. The particulate liquid 3 generated in the plant growing apparatus 1 is released into the space where the plant 2 is cultivated, so that the particulate liquid 3 floats in the space where the plant 2 is cultivated and is cultivated. The target plant 2 is attached to the back side of the target plant 2, between the leaves, between the leaves, behind the leaf or stem, or behind the obstacle or under the plant 2. It is possible to increase the content of antioxidant substances at each site by applying stress at various sites. In addition, the content of the antioxidant substance can be increased in various parts of the plant 2 by applying stress to various parts of the plant 2 with radicals and hydrogen peroxide.

Here, it is preferable that the fine particle liquid 3 has a nanometer size.

  As described above, the fine particle liquid 3 generated and released by the plant growing device 1 is extremely small and extremely light with a nanometer size, so that it floats far away in the space where the plant 2 is cultivated and becomes a shadow of a narrow gap or an object. The particulate liquid 3 can be attached to each part of the plant 2 as a target.

  Moreover, it is preferable that the antioxidant substance which increases in the said plant 2 is ascorbic acid and / or a polyphenol.

  Ascorbic acid is called vitamin C and cannot be produced in the human body. In addition to its antioxidant action, it has the effect of suppressing melanin and promoting collagen synthesis. Polyphenols also have an antioxidant action. In addition, it has a function of helping generation and activation of plant cells and has a hormone promoting action on humans. Therefore, in addition to the antioxidant effect on humans, it has various useful effects on plants and humans.

  Also, as the release mode of the particulate liquid 3, a plant growth particulate liquid release mode in which stress is applied to the plant 2 to increase the content of the antioxidant substance in the plant 2, and the plant growth particulate liquid release mode. It is preferable to operate by selecting the sterilizing fine particle liquid release mode and the sterilizing fine particle liquid release mode having a release amount larger than the release amount of the fine particle liquid 3 in the above.

  By adopting such a configuration, the plant growing device 1 of the present invention has a plant growing particulate liquid discharge mode and a sterilization according to changes in the environment in which the plant 2 is grown, the growth state of the plant 2, and the like. The fine particle liquid discharge mode can be selected and operated. As a result, stress is applied to the plant 2 to increase the content of the antioxidant substance in the plant 2, and pathogens that release a large amount of the particulate liquid 3 and inhibit the growth of the plant 2 are sterilized (or propagated). Can be selected) and can be effectively trained according to the situation.

  Further, when the humidity of the surrounding environment where the plant 2 is grown is lower than a predetermined value, the operation is performed in the plant growing particulate liquid discharge mode, and when the humidity is higher than the predetermined value, the operation is performed in the sterilizing particulate liquid discharge mode. preferable.

  Pathogens that inhibit the growth of plant 2 are greatly affected by humidity, and most diseases of plant 2 develop at high humidity. Therefore, when the ambient environment is low humidity, the plant is operated in the particulate liquid release mode for plant growth. When the content of the antioxidant substance in the plant 2 is increased by applying stress to the plant 2 and the surrounding environment becomes high humidity, it can be effectively sterilized by operating in the microparticle liquid discharge mode for sterilization.

  The charged fine particle liquid preferably contains ions and ozone.

  As described above, by containing ions and ozone in the charged fine particle liquid, the charged fine particle liquid is further released to the plant 2, thereby effectively applying stress to the plant 2 with a small amount of charged fine particle water. Thus, the content of the antioxidant substance in the plant 2 can be increased more effectively.

  Further, the generation of the fine particle liquid includes the discharge electrode 4 and the liquid supply means 5 for supplying water to the discharge electrode 4, and the fine particle liquid is generated by applying a high voltage to the water supplied to the discharge electrode 4. It is preferable that

  In this way, a simple configuration of applying a high voltage to the moisture supplied to the discharge electrode 4 includes a substance for applying stress to the plant 2 to increase the content of the antioxidant substance in the plant 2. The fine particle liquid 3 can be generated and released.

  In addition, the insulating spacer 6 and the electrode portion 7 disposed adjacent to or in the vicinity of the insulating spacer 6 are provided, and a minute voltage formed along the insulating spacer 6 by applying a high voltage to the electrode portion 7. A microplasma generator 9 that performs microplasma discharge in the space 8 and a substance that is generated by the microplasma discharge is dissolved in a liquid to form a liquid containing hydrogen peroxide, and the liquid containing the hydrogen peroxide is supplied to the liquid. It is preferable to supply the discharge electrode 4 by means 5.

  By adopting such a configuration, it is possible to produce a charged fine particle liquid by electrostatic atomizing a liquid containing hydrogen peroxide. In producing the charged fine particles, a charged fine particle liquid rich in radicals and hydrogen peroxide can be produced. Therefore, the charged fine particle liquid rich in radicals and hydrogen peroxide in this way effectively exerts stress on the plant 2 with a small release amount, and the target plant 2 effectively contains the antioxidant content. Can be increased.

  In addition, the plant growing method of the present invention releases the particulate liquid 3 generated by the plant growing apparatus 1 to the plant, thereby applying stress to the plant 2 and causing an antioxidant substance in the plant 2 The content of is increased.

  By adopting such a method, the particulate liquid 3 can be applied to the plant 2 on the back side of the leaf, between the leaves, between the leaves, the shade of the leaves or the stem, or the part hidden behind the obstacles or the lower part of the plant 2. Moreover, it can be made to adhere reliably, stress can be given in various parts of the plant 2 used as object, and the content of an antioxidant substance in each part of the plant 2 can be increased.

  Since the present invention is configured as described above, the content of the antioxidant substance in the plant by effectively applying stress to each part of the plant to be cultivated with the apparatus and method having a simple configuration. Can be increased.

It is a schematic explanatory drawing which shows the state which has provided the plant growing apparatus of this invention in the plant growing place and is growing a plant. It is a schematic block diagram of one Embodiment of a plant growing apparatus same as the above. It is a schematic block diagram of other embodiment of a plant growing apparatus same as the above. It is a schematic block diagram of further another embodiment of a plant growing apparatus same as the above. It is a schematic block diagram of further another embodiment of a plant growing apparatus same as the above. It is a graph which shows the measurement result of the content of total ascorbic acid in the bud leek in the 2nd week of the Example of this invention and a comparative example, and 3 weeks. It is a graph which shows the measurement result of the total phenolic substance content in the bud leek in the 2nd week and the 3rd week of the Example of this invention, and a comparative example.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  The plant growing apparatus 1 of the present invention is installed in a plant growing place 10 such as a greenhouse or a plant growing box. The plant growing device 1 of the present invention has a function of generating and releasing a fine particle liquid 3 containing a substance for applying stress to the plant 2 to increase the content of the antioxidant substance in the plant 2. ing.

  The fine particle liquid 3 containing a substance for applying stress to the plant 2 generated and released by the plant growing device 1 is preferably of nanometer size.

  Here, since the fine particle liquid generated in the plant growing device 1 and released toward the plant 2 is made to be nanometer-sized, it is extremely small and extremely light compared to the micron-sized fine particle solution. The nanometer-sized fine particle liquid can float in the space in the plant growing place 10 for a long time, and can also float in a narrow space or in the shadow of an object. This is because the fine particle liquid 3 can be attached to the site.

  The fine particle liquid 3 containing a substance for applying stress to the plant 2 to increase the content of the antioxidant substance in the plant 2 includes, for example, a charged fine particle liquid containing radicals and hydrogen peroxide. be able to.

  When charged fine particle liquid containing these radicals and hydrogen peroxide adheres to the plant 2 and gives stress to the plant 2, the production of the antioxidant is promoted in the plant 2, and the content of the antioxidant is increased. Many plants 2 can be cultivated.

  Examples of the antioxidant substance produced by the plant 2 stressed by the charged fine particle liquid containing radicals and hydrogen peroxide include ascorbic acid and polyphenols.

  Ascorbic acid, called vitamin C, is a component that cannot be produced in the human body, and has various properties such as inhibition of melanin and promotion of collagen synthesis in addition to antioxidant activity. Most vegetables are present in reduced form.

  Polyphenols are substances that provide anti-oxidative effects to humans, as well as hormonal stimulating effects, and help plants grow and activate plants. In addition, there are many types of polyphenols, and in particular, orthodiphenols represented by catechin and chlorogenic acid have radical scavenging ability that is strong antioxidant ability.

  Therefore, the plant growing apparatus 1 of the present invention is installed in a plant growing place 10 such as a greenhouse, and a charged fine particle liquid containing radicals and hydrogen peroxide generated in the plant growing apparatus 1 is generated and released. Then, the charged fine particle liquid containing radicals and hydrogen peroxide floats in the space in the plant growing place 10 where the plant 2 is cultivated, and the back side of the plant 2 to be cultivated or the leaf and leaf. Or in the shade of leaves or stems, or in the shade of obstacles or on the lower part of the plant 2, applying stress on various parts of the target plant 2, Plants with a high content of antioxidant substances can be cultivated while promoting the production of the above-mentioned antioxidant substances and promoting the growth and activation of plant cells.

  Plants with a high content of antioxidant substances cultivated in this way can be ingested with a large amount of antioxidant substances such as ascorbic acid and polyphenols by human consumption as food. It has an anti-oxidant effect, and can further exhibit effects such as suppression of melanin, promotion of collagen synthesis, and hormone-promoting effect, and can enhance the effect of suppressing aging of human composition.

  FIG. 2 shows a schematic configuration diagram of an example of the plant growing apparatus 1 of the present invention. In this embodiment, the example which comprised the plant growing apparatus 1 with the electrostatic atomizer 1a is shown. The electrostatic atomizer 1a which comprises the plant growing apparatus 1 applies a high voltage to the discharge electrode 4, the liquid supply means 5 for supplying water to the discharge electrode 4, and the moisture supplied to the discharge electrode 4. And a high voltage application means 11 for electrostatic atomization, and radicals and hydrogen peroxide were contained by applying a high voltage to the moisture supplied to the discharge electrode 4 and electrostatic atomization. A large amount of nanometer-sized charged fine particle liquid is generated and released.

  In the embodiment, an example is shown in which condensed water is generated by cooling the moisture in the air as the liquid supply means 5. An example of the Peltier unit 12 is shown as an example of generating condensed water by cooling moisture in the air, and the discharge electrode is generated by cooling the moisture in the air by the cooling unit 13 of the Peltier unit 12 to generate condensed water. 4 is supplied with water.

  The Peltier unit 12 has a pair of Peltier circuit boards 14 each having a circuit formed on one side of an insulating plate made of alumina or aluminum nitride having high thermal conductivity so that the circuits face each other, and are arranged in multiple rows. A thermoelectric element 15 is sandwiched between the two Peltier circuit boards 14 and the adjacent thermoelectric elements 15 are electrically connected to each other by circuits on both sides, to the thermoelectric element 15 from the power source 35 formed via the Peltier input lead wire 16. Is configured such that heat is transferred from one Peltier circuit board 14 side toward the other Peltier circuit board 14 side. Further, a cooling unit 13 is connected to the outside of the Peltier circuit board 14 on the one side, and a heat radiating unit 17 is connected to the outside of the Peltier circuit board 14 on the other side. A rear end portion of the discharge electrode 4 is connected to the cooling portion 13 of the Peltier unit 12.

  The discharge electrode 4 is surrounded by a cylindrical body 18 made of an insulating material, and an opening that communicates the inside and outside of the cylindrical body 18 is provided on the peripheral wall of the cylindrical body 18. Further, a ring-shaped counter electrode 19 is disposed at the tip opening of the cylindrical body 18, and the center of the ring of the ring-shaped counter electrode 19 is positioned on the extension line of the axis of the discharge electrode 4. And the counter electrode 19 are opposed to each other. The application of a high voltage by the high voltage applying means 11 and the energization of the Peltier unit 12 are controlled by the control unit 22. In the present invention, the counter electrode 19 may not be provided.

  In the plant growing device 1, the cooling unit 13 is cooled by energizing the Peltier unit 12, the discharge unit 4 is cooled by cooling the cooling unit 13, and moisture in the air is condensed to form the discharge electrode 4. Water (condensation water) is supplied to the water.

  When a high voltage is applied between the discharge electrode 4 and the counter electrode 19 in a state where water is supplied to the discharge electrode 4 in this way, the discharge electrode 4 is caused by the high voltage applied between the discharge electrode 4 and the counter electrode 19. The Coulomb force acts between the water supplied to the tip of the electrode and the counter electrode 19, and the liquid level of the water locally rises in a cone shape (tailor cone). When the tailor cone is formed in this way, the electric charge concentrates on the tip of the tailor cone and the electric field strength in this portion increases, thereby increasing the Coulomb force generated in this portion and further growing the tailor cone. . When the tailor cone grows like this and the charge concentrates on the tip of the tailor cone and the density of the charge becomes high, the water at the tip of the tailor cone has a large energy (repulsive force of the charge that has become dense). In response, the surface tension is exceeded, and splitting and scattering (Rayleigh splitting) are repeated to generate a large amount of nanometer-sized charged fine particle liquid containing radicals, hydrogen peroxide, ions, and ozone, and the discharge port 20 (in FIG. 2, cylinder 18). Is released into the space in the plant breeding ground 10 from an example in which the tip opening portion is used as the discharge port. In this case, by providing the plant growing apparatus 1 with the fan 37 as shown in FIG. 1, the charged fine particle water can fly more effectively far away in the space in the plant growing place 10 by being blown by the fan 37. .

  The charged fine particle liquid containing radicals and hydrogen peroxide generated / released as described above is extremely small and extremely light with a nanometer size, so it floats far away in the space where the plant 2 is cultivated and leaves and leaves It floats in a narrow space between objects such as the space between them, and attaches the fine particle liquid 3 to various parts of the target plant 2, and stresses the plant 2 at various parts of the plant 2. It is possible to cultivate plants with a high content of antioxidant substances while promoting the production of antioxidant substances and promoting the growth and activation of plant cells. In this embodiment, the nanometer-sized charged fine particle liquid generated by electrostatic atomization contains ions and ozone in addition to radicals and hydrogen peroxide. It has a function of generating and releasing the fine particle liquid 3 containing a substance for increasing the content of the antioxidant substance in the plant 2.

  Here, the plant growing apparatus 1 of the present invention, as the release mode of the particulate liquid 3, applies a stress to the plant 2 and increases the content of the antioxidant substance in the plant 2 to increase the content of the antioxidant liquid in the plant 2. And a sterilizing fine particle liquid release mode having a release amount larger than the release amount of the fine particle liquid 3 in the plant growing fine particle liquid discharge mode. Select to drive.

  Adjustment of the amount of the particulate liquid 3 released in the plant growing apparatus 1 is performed as follows, for example.

  The frequency can be controlled by adjusting the amount of charged fine particle water generated per unit time during electrostatic atomization. In the sterilizing fine particle liquid discharge mode, the generation amount of charged fine particle water per unit time is large, and in the plant growing fine particle liquid discharge mode, the generation amount of charged fine particle water per unit time is reduced.

  As another example, the charged fine particle liquid generated and released by the plant growing apparatus 1 by adjusting the amount of charged fine particle liquid generated by electrostatic atomization by adjusting the voltage or current to be applied. Can be adjusted.

  Thereby, when the charged fine particle liquid generated in the plant growing apparatus 1 is released into the plant growing place 10, for example, a unit of a plant (for example, a leaf) for a certain time with respect to the plant grown in the plant growing place 10. The amount of the charged fine particle liquid adhering per area, that is, the amount of radicals and hydrogen peroxide can be increased in the sterilizing fine particle liquid discharge mode than in the plant growing fine particle liquid discharge mode.

  The amount of charged particulate liquid generated and released in the above-mentioned plant growth particulate liquid release mode is an amount that can give the most suitable stress to promote the production of antioxidant substances to the target plant. The amount of the charged fine particle liquid generated / released in the sterilizing fine particle liquid release mode is set to an amount most suitable for sterilizing the pathogenic bacteria generated in the target plant.

  During normal cultivation of the plant 2, the plant growing device 1 is operated in the plant growing particulate liquid discharge mode. However, pathogenic bacteria are generated in the growing plant 2, or the environment in the plant growing place 10 is pathogenic. When the plant growth device 1 is operated in the sterilizing particulate liquid discharge mode, the amount of the particulate liquid 3 released is larger than during the operation of the plant growing particulate liquid discharge mode. Effectively sterilizes pathogenic bacteria.

  If the fine particle liquid release mode for plant growth is continued for a long time, the amount of radicals and hydrogen peroxide adhering to the plant per unit area will increase so much that the plant will be damaged. When a certain period of time has passed since the start of the operation of the growing particulate liquid discharge mode, the plant growing particulate liquid discharge mode is stopped, or the operation of the plant growing particulate liquid discharge mode and the stop of the operation are alternately repeated at regular intervals. Or, when the environment in the plant growing place 10 is an environment in which pathogenic bacteria are hard to be generated, the operation of the plant growing particulate liquid discharge mode is stopped.

  Here, pathogenic bacteria that inhibit the growth of the plant 2 are greatly affected by humidity, and most diseases of the plant 2 develop at high humidity. Then, stress may be applied to the plant 2 to increase the content of the antioxidant substance in the plant 2, and the operation may be performed in the sterilizing particulate liquid discharge mode when the surrounding environment becomes high humidity.

  The selection of whether to operate in the plant growth particulate liquid discharge mode or the sterilization particulate liquid discharge mode is performed by manual selection means 23 as shown in FIG. Either one of the modes may be selected and the plant growing apparatus 1 may be operated in the target mode. Alternatively, as shown in FIG. You may make it select automatically. When either one of the two modes is selected by the automatic selection means 25, for example, when the plant growing device 1 is turned on and the operation is started, the plant is initially operated in the plant growing particulate liquid discharge mode, When the environment is an environment where pathogenic bacteria are likely to be generated, the automatic selection means 25 controls the operation so as to operate in the sterilizing particulate liquid discharge mode.

  In this case, as a trigger for the operation in the sterilizing particulate liquid discharge mode, for example, a humidity sensor 27 for detecting the humidity in the plant growing place 10 is provided, and the humidity detected by the humidity sensor 27 is lower than a predetermined value. When the humidity is higher than a predetermined value, the sterilization particulate liquid discharge mode is operated.

  For example, carbon disease is likely to occur when the humidity reaches 60%. For example, when the humidity in the plant growing place 10 becomes 60% or more during operation in the plant growth particulate liquid discharge mode, the sterilization particulate liquid release mode is used. The operation is performed and the humidity becomes 60% or less, or the operation in the sterilizing fine particle liquid discharge mode is stopped, and the operation is switched to the operation in the plant growing fine particle liquid discharge mode, or the operation of the plant growing apparatus 1 is stopped.

  As another example, when water is given to a plant by an automatic irrigation device every predetermined time, the sterilization particulate liquid discharge mode operation may be performed with the start of irrigation or the end of irrigation as a trigger. Good.

  Next, other embodiment of the plant growing apparatus 1 of this invention is described based on FIG. The plant growing apparatus 1 in this embodiment is comprised with the microplasma generator 9 and the electrostatic atomizer 1a.

  The microplasma generator 9 has electrode portions 7 disposed adjacent to or in the vicinity of both sides of the insulating spacer 6, and the insulating spacer 6 and the electrode portion 7 both penetrate the thickness direction of about 0.1 to several mm. And a high voltage applying unit 30 for applying a high voltage between the electrode parts 7 is provided, and a high voltage is applied between the electrode parts 7. As a result, microplasma containing radicals such as hydroxy radicals and superoxide, nitrate ions, nitrogen oxides and the like is generated at a high density by microplasma discharge in the through holes, which are the minute spaces 8. .

  In FIG. 5, reference numeral 31 denotes a cooling device using a Peltier unit, which cools a cooling plate 32 provided on the cooling unit side of the Peltier unit, thereby condensing moisture in the air, and passing the water condensed on the cooling plate 32 to the flow path 33. It is supposed to flow through.

  The microplasma generated by the microplasma generator 9 is released into the flow path 33, and the microplasma is dissolved in water. Hydrogen peroxide is present in the water in which the microplasma is dissolved (that is, as described above, the microplasma contains radicals such as hydroxy radicals and superoxide. Is generated).

  A liquid containing hydrogen peroxide is stored in the liquid reservoir 34, and the liquid containing hydrogen peroxide in the liquid reservoir 34 is supplied to the discharge electrode 4 by the liquid supply means 5 such as a capillary tube, and the high voltage applying means 11 A liquid containing hydrogen peroxide supplied to the discharge electrode 4 is electrostatically atomized by applying a high voltage, and a large amount of nanometer-sized charged fine particle liquid containing radicals and hydrogen peroxide is generated and sent from the fan 37. It is released outside on the wind.

  As described above, in the present embodiment, the generated charged fine particle liquid contains radicals and hydrogen peroxide. However, as described above, in the present embodiment, the liquid containing hydrogen peroxide is electrostatically atomized. Compared with the above-described embodiment in which water is electrostatically atomized, radicals and hydrogen peroxide are rich in the charged fine particles. Therefore, the charged fine particle liquid generated in the plant growing apparatus 1 of the present embodiment is charged fine particles adhering to the plant 2 per unit area as compared with the charged fine particle liquid generated by electrostatic atomization of the water described above. Even if the amount of liquid is small, the amount of radicals and hydrogen peroxide adhering to the plant per unit area is almost the same, that is, it promotes the production of antioxidants for the target plant 2. It is possible to make the amount that can give the most suitable stress.

  Therefore, for example, when a tall plant 2 is cultivated in a large plant growing place 10 having a high height, the charged fine particle liquid is discharged from the ceiling and floated in a wide range and attached to the plant 2. In this case, the amount of the charged fine particle liquid adhering per unit area of the plant 2 is reduced. Even in such a case, the amount of hydrogen peroxide adhering per unit area to the plant can be made substantially the same.

  Next, examples and comparative examples of the present invention will be described.

[Example]
Bud onions grown in hydroponics were cultivated in an artificial meteor (Ube Industries Co., Ltd.) having an internal capacity of 50 liters and a blower for introducing outside air for 27 weeks after sowing.

The environment inside the artificial weather device was kept at 25 ° C. and humidity 50%. The artificial lighting was repeatedly turned on and off every 12 hours. The artificial illumination had an illuminance of 8364 lx and a photosynthetic effective photon flux density of 118.4 μmol ⁻² s ⁻¹ .

  Moreover, the plant growing apparatus 1 shown in FIG. 2 is disposed adjacent to the blower fan for introducing outside air provided in the upper part of the side of the artificial meteorological device, and the plant growing apparatus 1 is continuously operated every day for 24 hours to generate radicals. The charged fine particle liquid containing hydrogen peroxide was generated and released, and it was made to fly in an artificial meteor that cultivates sprouts by blowing air.

  The total ascorbic acid content in the sprouts at the 2nd and 3rd weeks was measured by the hydrazine method. In addition, the total phenolic substance content in the brown leek at the second and third weeks was measured by the foreign thiocult method.

[Comparative example]
Sprouts were cultivated under the same conditions as in Examples except that the plant growing apparatus 1 was not provided.

  The total ascorbic acid content in the sprouts at the 2nd and 3rd weeks was measured by the hydrazine method. In addition, the total phenolic substance content in the brown leek at the second and third weeks was measured by the foreign thiocult method.

  The measurement results of the total ascorbic acid content in the sprouts in the second and third weeks of the above Examples and Comparative Examples are shown in FIG. 6, and the total phenolic substance contents in the sprouts in the second and third weeks are shown. Is shown in FIG.

  As apparent from FIGS. 6 and 7, in both the second week and the third week, the examples had higher contents of ascorbic acid and the total phenolic substances in the buds than the comparative examples. . Thereby, it turns out that content of the antioxidant substance in a plant increases by generating fine particle liquid using the plant growing device 1 of the present invention, and releasing it to plant 2.

DESCRIPTION OF SYMBOLS 1 Plant growing apparatus 2 Plant 3 Fine particle liquid 4 Discharge electrode 5 Liquid supply means 6 Insulating spacer 7 Electrode part 8 Microspace 9 Microplasma generator

Claims (9)

A function to generate and release charged microparticles containing radicals and hydrogen peroxide, which are microparticles containing substances that give stress to plants and increase the content of antioxidants in plants. A plant growing apparatus characterized by having. 2. The plant growing apparatus according to claim 1, wherein the fine particle liquid has a nanometer size. The plant growth apparatus according to any one of claims 1 and 2, wherein the antioxidant substance increasing in the plant is ascorbic acid and / or polyphenol. Particulate liquid release mode is a plant growth particulate liquid release mode that increases the content of antioxidant substances in the plant by applying stress to the plant, and the particulate liquid release mode in the plant growth particulate liquid release mode. 2. A sterilizing particulate liquid release mode having a release amount larger than the amount, and selecting and operating the plant growing particulate liquid release mode and the sterilizing particulate liquid release mode. The plant growing device according to any one of claims 3 to 4. When the humidity of the surrounding environment where the plant is cultivated is lower than a predetermined value, the plant is operated in the fine particle liquid discharge mode for plant growth, and when the humidity is higher than the predetermined value, the operation is performed in the microparticle liquid discharge mode for sterilization. The plant growing device according to claim 4. The plant growing device according to any one of claims 1 to 5, wherein the charged fine particle liquid contains ions and ozone. The generation of the particulate liquid includes a discharge electrode and a liquid supply means for supplying moisture to the discharge electrode, and the particulate liquid is generated by applying a high voltage to the moisture supplied to the discharge electrode. The plant growing device according to any one of claims 1 to 6, wherein the plant growing device is characterized. An insulating spacer and an electrode portion disposed adjacent to or in the vicinity of the insulating spacer, and applying a high voltage to the electrode portion allows microplasma discharge to occur in a minute space formed along the insulating spacer. A microplasma generator to be performed, and a substance generated by the microplasma discharge is dissolved in a liquid to form a liquid containing hydrogen peroxide, and the liquid containing hydrogen peroxide is supplied to the discharge electrode by liquid supply means The plant growing device according to claim 7, wherein By releasing the fine particle liquid generated by the plant growing device according to any one of claims 1 to 8 to the plant, stress is applied to the plant to prevent the antioxidant substance in the plant. A plant growing method characterized by increasing the content.

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