JP2002165522A - Method for promoting growth of plant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus and a method for promoting growth of plants, each remarkably improving growth of plants by applying an artificial wind to the plants thus contributing to the development of industries in agriculture/forestry/fruit farming/flowering trees and shrubs. SOLUTION: This method for promoting growth of plants comprises applying an artificial wind to plants to make the plants sway with their characteristic frequency in the super low frequency so as to activate the water flow in the vessels of the plants.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial applications]

The present invention relates to, for example, fruit tree cultivation, vegetable cultivation, flowering tree cultivation, planting cultivation, pot cultivation, and bonsai. Equipment for growing those plants.

[Prior art]

Methods for promoting plant growth include replenishment of nutrients with appropriate water and appropriate fertilization, adjustment of sunshine hours and humidity, and the like. In particular, it is known that plant growth is optimized by computer control of water, fertilization, daylight hours and humidity.

[0003] Listening to or talking to music such as Mozart or Beethoven, or television, can improve the growth of plants such as vegetables and trees, or mechanical and electromagnetic vibrations can cause fruit tree maturation and seed germination. Are known to give good results. All of these methods apply a low frequency or a high frequency of 20 Hz or more to plants mechanically or electrically, so-called frequency control to promote the growth of plants, but do not add artificial wind to plants. . In addition, sound or mechanical
When the frequency of the electromagnetic vibration is a low frequency of 200 Hz or less, so-called low frequency pollution occurs, which may have a bad influence on the human body. For this reason, to date, the use of sound / vibration in the ultra-low frequency range of 20 Hz or less for promoting plant growth has not performed either amplitude control or frequency control at all.

[0004] On the other hand, it is often experienced that improving the ventilation is necessary for the growth of plants, but the mechanism by which wind affects the growth of plants has not been scientifically elucidated. No biotechnology for plant growth that actively utilizes the principles brought by plants to plants has been applied to industrial promotion such as agriculture, forestry, fruit trees, and flowers and trees.

[Problems to be solved by the invention]

The present invention has been made in view of the above-mentioned circumstances, and increases the centrifugal force of water in a conduit in a plant by applying artificial wind to the plant to reduce the amount of water absorbed by the plant. A plant cultivation device that can significantly increase the growth of plant bodies, and can dramatically develop the agriculture, forestry, fruit trees, and flowering industries related to fruit tree cultivation, vegetable cultivation, flowering tree cultivation, planting cultivation, pot cultivation, and bonsai. And a method.

[Means for Solving the Problems]

[0006] The plant growth promotion method for achieving the above-mentioned object is to apply a synthetic wind to a plant to give a swinging width of the plant which fluctuates due to a natural vibration of an extremely low frequency, thereby controlling a flow in a conduit in the plant. It is a way to activate. The principle is shown below.

Plants have conduits for transporting water and minerals, and sieve tubes for transporting photosynthetic nutrients. The former water / mineral is supplied in a direction in which the potential of water decreases, that is, from the root to the trunk, from the stem to the leaves, due to the root pressure, the suction force due to the capillary action of the conduit, and the transpiration force of the leaves.
Among them, the root pressure and the transpiration force are life activities based on the osmotic pressure of cells, whereas the suction force of the conduit is due to capillary action based on a physical principle which is not a life activity. The sieve tube is composed of cells that perform vital activities. Further, the conduits and sieve tubes of the plant correspond to the arteries of the animal, but the plant does not have an organ corresponding to the heart and further has no veins.

On the other hand, animals have arteries and veins, and the circulation of both pulses is efficient even in the terminal microvessels due to the pulsation of the heart, that is, the pumping action of very low frequency oscillation, and the unevenness is even. It is done without.

[0009] Therefore, even in plants, the trunk
By shaking the stems and veins to an appropriate size in one direction or in multiple directions, wind velocity is imparted to non-vital conduits at the very low frequency natural vibration corresponding to the pumping action of the heart, or the plant If the flow rate in the conduit is adjusted by controlling the swing width, in addition to the conventional pump action, the centrifugal force effect based on a moderate amount of swing is newly superimposed,
Since water and minerals are efficiently transported to every corner of the leaf, plant growth is significantly promoted.

[Action]

[0010] Specific methods for externally imparting an appropriate pumping action to a conduit in a plant on a regular or long-term basis include:
There is sound, vibration and wind. These have the effect of energizing or reducing the flow of water and minerals in the conduit. At the same time, the release of oxygen from the pores and the absorption of carbon dioxide gas are promoted or reduced. Therefore, it is possible to arbitrarily control plant growth by changing conditions such as sound, vibration, and wind.

It is known that sounds and vibrations having a low frequency and a high frequency of 50 Hz or more promote or suppress plant growth. However, it is impossible to drastically change the shaking based on the natural vibration of the plant by these methods. Furthermore, it has been clarified that harm caused by sound and vibration to the human body depending on conditions.

On the other hand, it is often experienced that natural winds are necessary for plant growth. In general, natural wind or artificial wind shakes the trunk, branches, treetops, and leaves of a plant with natural vibration of an ultra-low frequency of 20 Hz or less, but the plant body shakes in various directions, and the wind harms the human body. The effect is small. In addition, the inherent sway of the plant can be greatly controlled by changing the wind speed of the artificial wind.

Therefore, in a plant growth promotion method utilizing an ultra-low frequency natural vibration imparted by an artificial wind generated by a blower, centrifugal force acts on a pump action, so that sound and vibration at a low frequency and a high frequency are used. It is possible to cause the plant to grow more efficiently and quickly than the plant growth promotion method based only on the pump action in the case. Furthermore, the plant can be swung in any direction by providing a plurality of blowers surrounding the plant. At the same time, it is harmless to the human body. Furthermore, the present invention has not been attempted at all.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, a plant growing apparatus and method of the present invention will be described based on a specific embodiment shown in the drawings.

Embodiment 1

[0015] The growth promoting state of a plant can be evaluated by examining the amount of water absorbed. The effect of the artificial wind on the amount of water absorbed by the plants was investigated using the experimental apparatus shown in FIG. 1 in the case of no wind and in the case where the artificial wind was applied by a blower. In FIG. 1, the blower 1
The plant 2 is surrounded by the transparent plate 3 so that the artificial wind from the plant 2 hits only the plant 2, and the interval between the plant 2 and the blower 1 is 1 m. The container is provided with a vinyl lid 5 to prevent the nutrient water 4 in the container from evaporating due to the wind. The water uptake was determined by measuring the total weight of the plant and the nutrient water container. In addition, in order to correct the influence of the leaf area difference on the water uptake amount in the plant, the water uptake amount per pore is used below.

[0016] Pothos, a hydroponic houseplant was used. An artificial wind was applied for 8 hours from 10 o'clock to 18 o'clock in the daytime when photosynthesis was active, and the weight change was checked every 2 hours. FIG. 2 shows changes in the elapsed time of the weight in the case of no wind and in the case of the artificial wind with a wind speed of 0.4 m / sec based on the measurement start time. Both show linear changes, and it can be seen that the amount of water sucked by the artificial wind is larger than that of the no wind at the same elapsed time.

FIG. 3 shows the difference between the artificial wind and no wind in FIG. 2, in other words, the increase in water absorption due to the plants being exposed to the artificial wind at a wind speed of 0.4 m / sec. Since the water uptake increases linearly with time, the water uptake is significantly improved by applying artificial wind to the plants, and the water uptake per unit time is constant. Understand.

FIG. 4 shows the relationship between the wind speed and the amount of water suction when the wind speed is changed from 0.0 to 2.0 m / sec. It can be seen from the figure that as the wind speed increases, the amount of water suction increases linearly.

Embodiment 2

The relationship between the amount of water absorbed by plants and the mechanical vibration of the petiole was examined using the experimental apparatus shown in FIG. In the experimental apparatus shown in the figure, a plastic plate 6 was attached to a support of a pothos stalk, and the plant was vibrated by a method in which the tip of the plate was vibrated by applying a periodic external force of a vibration motor 7. The frequency and amplitude of the leaf were measured via a voltage amplifier 9 with a strain gauge 8 attached to the petiole. The plant used was hydroponic pothos.

FIG. 6 shows the vibration waveform and vibration spectrum of the petiole. From the FFT analysis of FIG. 6, it can be seen that the petiole mainly oscillates at a natural frequency of about 4 Hz, and that the amplitude of the oscillation waveform in FIG. 6 corresponds to about 0.4 mV. The frequency of the petiole is constant irrespective of the magnitude of the swing width of the plastic plate.

FIG. 7 shows the relationship between the run-out width of the petiole obtained by changing the run-out width of the plastic plate and the amount of water suction. From the figure, it can be seen that as the swing width of the petiole increases, the amount of water suction increases, but it becomes saturated and constant at the swing width corresponding to 0.4 mV or more. Therefore, even if the petiole is shaken with a swing width equal to or more than 0.4 mV in order to increase the flow pressure in the conduit, it is no longer possible to increase the water uptake amount.

Next, the artificial wind effect of the first embodiment and the vibration effect of the second embodiment with respect to the water suction amount will be compared. First, when the relationship between the wind speed of the artificial wind and the swing width of the petiole was examined, both showed the direct proportional relationship in FIG. Therefore, the swing width of the petiole was selected as a parameter, and FIGS. 4 and 7 were rearranged to show the relationship between the wind speed and the water suction amount. FIG. 9 shows the result. From the figure, 0.6
At a wind speed of m / sec or less, it can be confirmed that the artificial wind effect and the vibration effect on the water suction amount are almost the same. 0.6m
It is considered that the difference between the water uptake amounts of the two curves at a wind speed of / second or more is mainly due to the fact that as the wind speed increases, the pressure around the leaves decreases, and thus water transpiration from the pores becomes active. .

From the above, (1) there is a fluctuation width of the plant that occurs at the wind speed that allows water and minerals in the conduit to be supplied from the roots to the leaves most efficiently, and (2) the optimum wind speed in Example 1 is 0. It is 6 m / sec, and at this time, it can be seen that the petiole of the pothos mainly exhibits an extremely low frequency natural vibration corresponding to 4 Hz.

Embodiment 3

An apparatus for promoting the growth of tomato 10 by applying an artificial wind to the hydroponic tomato 10 will be described with reference to FIG. The blower 1 is installed in the blower duct 11, an artificial wind is generated from the blower outlet 12 with throttle control toward the blower inlet 13, and the artificial wind is applied to the leaves of the tomato 10. In order to randomly apply artificial wind to the leaves of the tomato 10, the tomato 10 is rotated using the turntable 14. With this device,
Wind speed, blast time length, blast time interval, rotary table 14
If optimal conditions are given for the rotation speed of tomato,
It is possible to shorten the harvest period and improve the flavor.

FIG. 1 shows the relationship between the average cross-sectional diameter of ten tomato seeds and the number of growing days in the case of no wind and the case of artificial wind.
It is shown in FIG. The conditions of the artificial wind are a wind speed of 0.6 m / sec, a blowing time of 1 hour, and a blowing interval of 1 hour, and the blowing period is 3 weeks immediately after the falling flowers. From FIG. 11, it can be seen that the tomato fruit grows about 20% larger when the artificial wind is applied than when there is no wind.

Embodiment 4

FIG. 12 shows an apparatus for promoting the growth of rose stalks by applying artificial wind to western roses 15 cultivated in rock wool for hydroponics. The blower 1 attached to the linear motion guide 17 arranged in parallel with the wool tank 16 can reciprocate by the drive motor 18. The brightness of the surrounding environment is sensed by the light intensity sensor 19 and sent to the control box 20 to control the light intensity of the electric light 21 and the moving speed and wind speed of the blower 1. The blower 1 can control the direction of the wind hitting the western rose 15 in an arbitrary direction by swinging up, down, left, and right. With this device, light intensity, wind speed,
By adjusting the wind direction and the moving speed, the elongation of the rose stalk can be remarkably increased, and high-grade roses can be efficiently grown.

FIG. 13 shows the relationship between the average elongation status of 10 western roses and the number of days of breeding in the case of no wind and the case of artificial wind. From the figure, it can be seen that the rose stem is about 25% larger by applying the optimal artificial wind than in the case of no wind.

【The invention's effect】

As described above, the present invention aims to enhance the growth of plants by artificial wind, and if the plant is given an appropriate shaking by artificial wind, the water and minerals in the conduit will be affected by the leaves. Supplied to Further, if the artificial air volume is controlled and the natural vibration of the extremely low frequency is caused by the fluctuation width of the plant, the effect is further increased. A growing apparatus for fruit tree cultivation, vegetable cultivation, flowering tree cultivation, planting cultivation, pot cultivation, and bonsai using this principle can remarkably promote plant growth.

[Brief description of the drawings]

FIG. 1 is an experimental device for confirming a state of promoting plant growth by artificial wind.

FIG. 2 is a diagram showing the relationship between the amount of water suction and the elapsed time in an artificial wind or no wind.

FIG. 3 is a diagram showing a relationship between an amount of water suctioned by an artificial wind at a wind speed of 0.4 m / sec and an elapsed time.

FIG. 4 is a diagram showing a relationship between a wind speed and a water suction amount at a wind speed of 0.0 m / sec to 2.0 m / sec.

FIG. 5 is an experimental apparatus for examining the relationship between the amount of water sucked up in a plant and the mechanical vibration of the petiole.

FIG. 6 is a diagram showing an FFT analysis of mechanical vibration of a petiole and a vibration waveform.

FIG. 7 is a diagram showing the relationship between the runout width of a petiole and the amount of water absorbed.

FIG. 8 is a diagram showing a relationship between a swing width due to mechanical vibration and a wind speed.

FIG. 9

FIG. 7: By replacing the swing width of the petiole with the wind speed,

FIG. 4 and

FIG. 7 is a diagram in which the relationship of FIG. 7 is readjusted.

FIG. 10 is a view showing an apparatus for promoting the growth of tomato fruits by applying artificial wind to the tomatoes.

FIG. 11 is a diagram showing the relationship between the average cross-sectional diameter of a tomato fruit and the growth time.

FIG. 12 is a view showing an apparatus for promoting the growth of rose stems by applying artificial wind to western roses.

FIG. 13 is a diagram showing the relationship between stem growth and growth time of western roses.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Blower 2 Plant 3 Transparent plate 4 Nutrient water 5 Lid 6 Plastic plate 7 Vibration motor 8 Strain gauge 9 Voltage amplifier 10 Tomato 11 Ventilation duct 12 Ventilation outlet with throttling 13 Ventilation inlet 14 Rotary table 15 Western rose 16 Wool tank 17 Direct Motion guide 18 Drive motor 19 Light intensity sensor 20 Control box 21 Light

Claims (6)

[Claims] 1. An apparatus for growing a plant, comprising blowing means for applying an artificial wind to the plant. 2. The plant growing apparatus according to claim 1, wherein said blowing means is a blower. 3. The plant growing apparatus according to claim 1, wherein the blower is a blower with an inverter capable of adjusting a wind speed applied to the plant and adjusting a swing of the plant. 4. An air duct is used as said air blowing means, an air outlet is provided in the duct path, and a throttle for adjusting the air volume is installed at each outlet, and furthermore, near each plant from the outlet. 2. The plant growing apparatus according to claim 1, wherein a bellows tube is used. 5. The plant growing apparatus according to claim 1, further comprising a plurality of blowers surrounding the plant. 6. A method for growing a plant, comprising applying a wind speed to the plant such that the vibration of the plant becomes an extremely low frequency of 20 Hz or less corresponding to the natural frequency of the plant.