CN111542226B

CN111542226B - Method for dispensing medicine

Info

Publication number: CN111542226B
Application number: CN201880080985.XA
Authority: CN
Inventors: 田尾本昭; 石渡正纪
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2017-12-22
Filing date: 2018-11-20
Publication date: 2022-01-04
Anticipated expiration: 2038-11-20
Also published as: JP7008223B2; WO2019123939A1; CN111542226A; JPWO2019123939A1

Abstract

The drug dispersion method includes: a first step (S10) of preliminarily making the inside of the chemical agent dispersion area (the inside of the greenhouse main body (10)) in a mist-diffused state; and a second step (S20) for dispersing the drug into the drug dispersion region in a state in which the mist is diffused after the first step (S10).

Description

Method for dispensing medicine

Technical Field

The invention relates to a method for spreading a medicament, in particular to a method for spreading a medicament in an agricultural greenhouse.

Background

In order to control the environment for growing plants such as crops, agricultural greenhouses including small houses (greenhouse bodies) called vinyl houses and steel tube greenhouses are used. In such an agricultural greenhouse, a cultivation environment suitable for cultivation of plants is constructed by controlling the internal environment of the agricultural greenhouse such as temperature, humidity, or illuminance while allowing sunlight to enter to obtain the external environment.

Since the space in which plants are grown in an agricultural greenhouse is closed, there is a risk that: once a disease occurs, the disease can spread in the whole agricultural greenhouse, and all plant bodies are destroyed. Therefore, in the prior art, in an agricultural greenhouse, chemicals are scattered to control diseases (for example, patent document 1).

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2011-104497

Disclosure of Invention

Problems to be solved by the invention

However, in the agricultural greenhouse, it is difficult to dispense an appropriate amount of the chemical when the chemical is dispensed, and the chemical is often dispensed in an amount exceeding a necessary amount to improve the sufficient effect of the chemical. Therefore, an excessive amount of the drug is scattered, which adversely affects the human body of the worker or imposes a load on the environment.

Further, it is desirable that the chemical adheres to the back surface of the leaf of the plant and the vicinity of the growing point, but in order to adhere the chemical to the back surface of the leaf of the luxurious plant and the vicinity of the growing point, it is necessary for the operator to manually move various nozzles to locally dispense the chemical so that the chemical adheres to the site to which the chemical is to be dispensed.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a method for dispensing a drug, the method comprising: the drug effect can be sufficiently improved with the smallest possible amount of the drug, and the drug can be easily attached to the back surface of the leaves and the vicinity of the growing point of the luxuriant plant.

Means for solving the problems

One embodiment of a drug delivery method according to the present invention includes: a first step of preliminarily making the inside of the drug application region in a mist-dispersed state; and a second step of, after the first step, dispersing the drug into the drug dispersion region in a state in which the mist is diffused.

ADVANTAGEOUS EFFECTS OF INVENTION

The drug effect can be sufficiently improved with the smallest possible amount of the drug, and the drug can be easily attached to the back surface of the leaves and the vicinity of the growing point of the luxuriant plant.

Drawings

Fig. 1 is a perspective view schematically showing the appearance of an agricultural greenhouse according to an embodiment.

Fig. 2 is a schematic horizontal sectional view schematically showing an agricultural greenhouse according to an embodiment.

Fig. 3 is a schematic cross-sectional view schematically illustrating an agricultural greenhouse according to an embodiment.

Fig. 4 is a partially enlarged view of the inside of the agricultural greenhouse according to the embodiment.

Fig. 5 is a flowchart of a drug delivery method according to an embodiment.

Fig. 6 is a diagram for explaining a first step in the drug dispensing method according to the embodiment.

Fig. 7 is a diagram for explaining a second step in the drug dispensing method according to the embodiment.

Detailed Description

Embodiments of the present invention are explained below. The embodiments described below are all specific examples of the present invention. Therefore, the numerical values, the components, the arrangement positions and the connection modes of the components, the steps (steps), the order of the steps, and the like shown in the following embodiments are examples, and the present invention is not limited thereto. Therefore, among the components in the following embodiments, components that are not recited in the independent claims indicating the uppermost concept of the present invention will be described as arbitrary components.

The drawings are schematic and not necessarily strictly illustrated. In the drawings, substantially the same components are denoted by the same reference numerals, and redundant description is omitted or simplified.

(embodiment mode)

First, before describing the chemical distribution method according to the embodiment, the structure of the agricultural greenhouse 1 using the chemical distribution method will be described with reference to fig. 1 to 4. Fig. 1 is a perspective view schematically showing the appearance of an agricultural greenhouse 1 according to an embodiment. Fig. 2 and 3 are a schematic horizontal sectional view and a schematic transverse sectional view schematically showing the agricultural greenhouse 1. Fig. 4 is a partially enlarged view of the inside of the agricultural greenhouse 1. In fig. 1, the plant body 2 is not shown.

As shown in fig. 1 to 4, the agricultural greenhouse 1 is a plant growth facility for growing plant bodies 2, and includes a greenhouse main body 10 as an outer periphery surrounding a space for growing the plant bodies 2. In the present embodiment, the greenhouse main body 10 is a closed space, and if all the openings such as the ventilation ports 13 are closed, the greenhouse main body can be a closed space.

As shown in fig. 1, the booth body 10 includes a frame 11 and a cover 12 supported by the frame 11. The greenhouse main body 10 has a rectangular shape with a large aspect ratio in a plan view. For example, the greenhouse main body 10 has a dimension of about several tens of meters (e.g., 50 meters) in the longitudinal direction and a length of about several meters (e.g., 5 meters) in the short direction in a plan view. The booth body 10 is formed in a shape that protrudes upward in a cross section intersecting the longitudinal direction.

The frame 11 is formed by combining a plurality of tubes as a frame structural material. Specifically, the frame 11 includes a plurality of arch-shaped first pipes 11a (main frame) and a plurality of second pipes 11b (connection frame) connecting the plurality of first pipes 11 a. The first pipe 11a and the second pipe 11b are made of metal, and are made of, for example, aluminum material, steel material, or the like. Further, the first pipe 11a and the second pipe 11b are not limited to metal pipes, and may be resin pipes or wooden pipes.

The cover 12 is mounted on the frame 11 to cover the entire frame 11. The cover 12 is made of a light-transmitting member such as a glass plate or a synthetic resin film. The cover 12 is preferably made of a transparent member such as transparent glass or transparent resin film.

A ventilation opening 13 serving as an opening for ventilation, an opening for allowing a person to enter the greenhouse main body 10 and an opening 14 serving as an opening for allowing the person to exit from the greenhouse main body 10, and the like are provided in a part of the cover 12. The ventilation port 13 is provided in, for example, a side wall or a ceiling of the greenhouse main body 10. The doorway 14 is provided in a lateral wall (wife wall, japanese) of the greenhouse main body 10.

In addition, a window 15 for opening and closing the vent 13 is provided in the greenhouse main body 10. The window 15 has a configuration movable between a closed position covering the vent 13 and an open position opening the vent 13. Specifically, the window 15 has a structure in which a transparent cloth (sheet) is wound around a shaft, and the opening degree of the vent 13 can be adjusted according to the amount of the cloth wound around the shaft. That is, the window 15 and the ventilation port 13 are ventilation windows for ventilating air inside and outside the greenhouse main body 10. The window 15 is disposed such that the upper end of the cloth is attached to the greenhouse main body 10 and the axis is located below the portion where the cloth is attached to the greenhouse main body 10.

Further, the greenhouse main body 10 is provided with a shade 16 for adjusting the solar radiation incident on the greenhouse main body 10. The shade 16 is movable between a position at which external light (for example, sunlight) incident into the greenhouse main body 10 is reduced and a position at which external light incident into the greenhouse main body 10 is not reduced.

In the agricultural greenhouse 1, crops as plant bodies 2 are cultivated. The plant body 2 is, for example, fruits and vegetables, leaf vegetables, root vegetables, beans, fruits, flowers, or the like. Examples of the fruits and vegetables include tomatoes, cucumbers, eggplants, and the like. Examples of the leaf vegetables include spinach, komatsuna, lettuce, cabbage, and Chinese cabbage. The root vegetables include radix Raphani, radix Dauci Sativae, Burdock, rhizoma Solani Tuber osi, radix Ipomoeae, rhizoma Nelumbinis, and rhizoma Dioscoreae.

In the present embodiment, an example of cultivating fruits and vegetables, particularly tomatoes, as the plant bodies 2 will be described. Therefore, in fig. 2 to 4, the stem, leaf, etc. of tomato are shown as the plant body 2.

A plurality of (2 in the present embodiment) ridges 3 are provided on the ground surrounded by the greenhouse main body 10, the ridges being formed by stacking soil around the ridges to grow the plant bodies 2. Further, the adjacent ridges 3 form a passage 4 as a passage and a working space for a user.

A plurality of plant bodies 2 are planted at substantially equal intervals on each of the plurality of ridges 3. As a planting method for planting the plant bodies 2 on the ridges 3, single-row planting or double-row planting can be cited, but other planting methods are possible. In addition, 1 plant 2 is planted on the ridge 3 in one greenhouse main body 10, but a plurality of plants 2 may be planted.

As shown in fig. 2 to 4, the agricultural greenhouse 1 includes a mist spraying section 100, a pipe 200, a tank 300, a temperature measuring section 400, and a control section 500. The mist spraying part 100, the pipe 200, the tank 300, the temperature measuring part 400, and the control part 500 are provided in the booth body 10.

The mist sprayer 100 is a mist sprayer for spraying mist into the booth body 10. Specifically, the mist ejection part 100 is a nozzle that generates mist and ejects the mist to the outside.

The booth main body 10 is provided with a plurality of mist spraying parts 100. The plurality of mist ejection portions 100 are connected to the tubes 200, respectively, and the liquid is supplied to each mist ejection portion 100 through the tube 200. The plurality of mist ejection portions 100 generate mist by atomizing the liquid supplied through the pipe 200 into fine particles, and eject the generated mist to the outside. As shown in fig. 4, each mist ejection portion 100 has 1 or more ejection ports for ejecting the generated mist to the outside. The mist ejected from the outlet 110 is blown out so as to spread from the outlet 110.

Each mist ejection portion 100 has 4 ejection ports 110. Specifically, each mist ejection part 100 has 4 branch pipes 120. The 4 blow-out ports 110 are provided at the front end portions of the 4 branch pipes 120. In each

mist ejection part

100, 4 branch pipes 120 are arranged at intervals of 90 degrees in the horizontal plane. Further, the air outlet 110 of each branch pipe 120 faces in the horizontal direction. Further, air outlet 110 is not limited to the case of being oriented in the horizontal direction, and air outlet 110 may be oriented vertically upward or vertically downward.

In the present embodiment, the mist ejection part 100 sprays the plant 2. That is, the mist ejection part 100 not only introduces the mist into the space inside the greenhouse main body 10, but also directly ejects the mist to the plant 2. Therefore, the mist ejection part 100 is preferably arranged to generate mist at a position higher than the plant 2. In the present embodiment, the mist ejection part 100 is disposed above the plant 2, that is, above the ridge 3, but may be disposed above the passage 4. For example, the height from the ground surface (the upper surface of the ridge 3) where the plant body 2 is grown to the mist discharge portion 100 is approximately 50cm to 300cm, and is determined according to the plant height of the plant body 2.

In the present embodiment, a chemical solution or water is supplied to the mist ejection part 100 through the pipe 200. Therefore, the mist ejection portion 100 ejects the medicine mist formed by microparticulating the medicine liquid containing the medicine or the water mist formed by microparticulating the water as the mist. The chemical contained in the chemical liquid may be, for example, a chemical for controlling diseases to be used for controlling diseases of the plant 2, a chemical for controlling pests to be used for controlling pests of the plant 2, or a chemical containing both of them. The chemical is not limited to a chemical for controlling pests, and may be another chemical such as a chemical for promoting growth of the plant body 2.

The pipe 200 constitutes a flow path for supplying the liquid from the tank 300 to the mist ejection part 100. In the present embodiment, the chemical solution or water is supplied to the mist ejection part 100. The chemical liquid supplied to the mist ejection part 100 is an aqueous solution containing a chemical useful for the plant 2. The water supplied to the mist ejection part 100 is, for example, water using rainwater, river water, well water, or the like as raw water, or tap water.

The tubes 200 are arranged to pass linearly over the ridges 3 in the longitudinal direction of the ridges 3. In the present embodiment, the pipe 200 is arranged in an ロ -shape, and includes 2 main pipes 200a passing above the 2 ridges 3, respectively, and a connecting pipe 200b connecting the end portions of the 2 main pipes. A plurality of mist ejection parts 100 are attached to the main pipe 200a at equal intervals. The layout of the pipes 200 is not limited to the ロ shape written in one stroke, and may be configured to branch from the connecting pipe 200b (header pipe) on the tank 300 side so as to branch along each ridge 3.

Further, a pump 210 and a valve 220 are provided in a flow path for supplying the liquid from the tank 300 to the mist ejection part 100. Thus, the tube 200 is connected to the pump 210.

The pump 210 is, for example, a booster pump, and supplies the liquid (chemical liquid or water) stored in the tank 300 to the pipe 200 by applying a water pressure thereto. That is, the pump 210 pressurizes the liquid of the tank 300 to supply to the pipe 200. Thereby, the pressurized liquid is supplied to the tube 200. Then, when the pressurized liquid is supplied to the mist ejection part 100 attached to the pipe 200, the liquid is sprayed from the mist ejection part 100. Further, the ejection pressure of the mist ejected from the mist ejection portion 100 can be adjusted by adjusting the pressure of the liquid by the pump 210.

The valve 220 is disposed between the pump 210 and the pipe 200, and adjusts the flow rate of the liquid supplied from the tank 300 to the mist ejection part 100. Specifically, the flow rate of the liquid supplied to the mist ejection part 100 can be adjusted by adjusting the opening degree of the valve 220. Further, the opening degree of the valve 220 is not adjusted, but the pressure of the liquid is adjusted by the pump 210, and as a result, the flow rate of the liquid supplied to the mist ejection portion 100 can also be adjusted.

Further, the liquid pressure is adjusted by the pump 210 instead of adjusting the opening degree of the valve 220, and as a result, the flow rate of the liquid supplied to the mist ejection part 100 can also be adjusted.

Further, by providing the valve 220 as a pressure control valve, the pressure of the liquid supplied to the mist ejection part 100 can be adjusted by the valve 220, and as a result, the ejection pressure of the mist can also be adjusted by the valve 220.

The tank 300 is a container in which liquid to be supplied to the mist ejection part 100 is stored. In the present embodiment, a chemical liquid or water is stored in the tank 300. Specifically, the tank 300 includes a container in which the chemical liquid is stored and a container in which water is stored.

The temperature measuring unit 400 measures the dry bulb temperature and the wet bulb temperature in the greenhouse main body 10. The dry bulb temperature and the wet bulb temperature measured by the temperature measuring unit 400 are output to the control unit 500.

Specifically, the temperature measuring unit 400 includes a dry-bulb sensor 410, a wet-bulb sensor 420, and a temperature output unit 430. The dry bulb sensor 410 measures the dry bulb temperature of the air inside the greenhouse main body 10. The wet bulb sensor 420 measures the wet bulb temperature of the air inside the greenhouse main body 10. The temperature output unit 430 outputs the dry bulb temperature measured by the dry bulb sensor 410 and the wet bulb temperature measured by the wet bulb sensor 420 to the control unit 500.

The wet bulb sensor 420 includes a temperature detection unit 421, a fiber unit 422, and a water tank 423. The wet bulb sensor 420 sucks up water through the fiber part 422 immersed in the water tank 423, and keeps the temperature detection part 421 in a wet state, thereby measuring the wet bulb temperature.

The temperature output unit 430 outputs the dry bulb temperature and the wet bulb temperature measured by the temperature measuring unit 400 to the control unit 500. Specifically, the temperature output unit 430 is connected to the control unit 500 wirelessly or by wire, and outputs data of the dry-bulb temperature measured by the dry-bulb sensor 410 and the wet-bulb temperature measured by the wet-bulb sensor 420 to the control unit 500. Further, the measurement of the dry bulb temperature by the dry bulb sensor 410 and the measurement of the wet bulb temperature by the wet bulb sensor 420 are performed when the medicine is dispensed, but not limited thereto, and may be performed all the time.

Data of the dry-bulb temperature and the wet-bulb temperature measured by the dry-bulb sensor 410 and the wet-bulb sensor 420 may be stored to a memory. In this case, the data of the dry bulb temperature and the wet bulb temperature may be stored in the memories built in the temperature measuring unit 400 and the control unit 500, or may be stored in another memory provided in the agricultural greenhouse 1.

The control unit 500 controls the mist ejection unit 100. Specifically, the control unit 500 calculates a saturation difference based on the dry bulb temperature and the wet bulb temperature measured by the temperature measuring unit 400, and controls the start and stop of the discharge of the mist by the mist discharge unit 100 based on the saturation difference. The control unit 500 controls the start and stop of the ejection of the mist of the chemical liquid by the mist ejection unit 100. Specifically, the control unit 500 outputs a signal for starting or stopping the ejection of the mist or the chemical liquid mist by the mist ejection unit 100.

The control unit 500 is configured by, for example, a processor operating according to a program, a computer provided with such a processor, or the like.

Next, a medicine dispensing method according to the present embodiment will be described with reference to fig. 2 to 4 and fig. 5 to 7. Fig. 5 is a flowchart of a drug delivery method according to an embodiment. Fig. 6 is a diagram for explaining a first step in the drug dispensing method according to the embodiment. Fig. 7 is a diagram for explaining a second step in the drug dispensing method according to the embodiment.

As shown in fig. 5, the medicine dispensing method according to the present embodiment includes a first step S10 of preliminarily making the medicine dispensing region mist-diffused, and a second step S20 of dispensing the medicine into the medicine dispensing region in a mist-diffused state after the first step S10. That is, as a pretreatment before the drug is dispensed, a treatment is performed to make the drug dispensing region mist.

The chemical agent application region is a region where the chemical agent is applied, and is a space where the plant body 2 to which the chemical agent is to be applied is cultivated. In the present embodiment, the chemical distribution area is a space in the agricultural greenhouse 1. Specifically, the chemical agent spreading area is a space inside the booth main body 10 as shown in fig. 2 and 3.

Next, the details of the drug dispensing method in the present embodiment will be described.

In the agricultural greenhouse 1, when the chemical is spread, the dry bulb temperature and the wet bulb temperature in the greenhouse main body 10 are measured by the dry bulb sensor 410 and the wet bulb sensor 420. Measurements of dry bulb temperature and wet bulb temperature are continuously taken during the dispensing of the medicament. In this case, the measurement of the dry bulb temperature and the wet bulb temperature may be performed continuously at all times, or may be performed periodically every several seconds or minutes. The dry bulb temperature and the wet bulb temperature measured by the dry bulb sensor 410 and the wet bulb sensor 420 are output from the temperature output unit 430 to the control unit 500 in real time.

The dry bulb temperature measured by the dry bulb sensor 410 and the wet bulb temperature measured by the wet bulb sensor 420 are output from the temperature output part 430 to the control part 500. In the control section 500, the relative humidity and the saturation difference are calculated from the temperature difference between the dry bulb temperature and the wet bulb temperature. The calculation of the relative humidity and the saturation difference can be carried out at any time by matching with the measurement of the dry bulb temperature and the wet bulb temperature.

Then, the control unit 500 outputs a signal (mist discharge start signal) for starting the discharge of the mist based on the calculated saturation difference, and outputs a signal (mist discharge stop signal) for stopping the discharge of the mist after a fixed time from when the saturation difference becomes 0 until the saturation difference becomes 0. As a result, as shown in fig. 6, water is supplied to the mist ejection portion 100 through the pipe 200, and mist is ejected from the mist ejection portion 100.

Specifically, when the mist ejection start signal is output from the control unit 500, the pump 210, the valve 220, and the like are controlled to supply pressurized water from the tank 300 to the pipe 200 based on the mist ejection start signal. For example, water having a water pressure of 0.1 to 0.8MPa is supplied by the pump 210, the valve 220, and the like. Thus, mist having a particle diameter of, for example, 10 μm or more and 100 μm or less is ejected from each mist ejection portion 100.

As described above, by spraying mist having a particle size of 10 μm or more and 100 μm or less until the saturation difference becomes 0, the inside of the greenhouse main body 10, which is the chemical solution distribution area, can be made into a mist-diffused state as shown in fig. 6 (first step S10).

After that, when the mist discharge stop signal is outputted from the control unit 500 after a predetermined time has elapsed since the saturation difference becomes 0, the pump 210, the valve 220, and the like stop the supply of water from the tank 300 to the pipe 200 based on the mist discharge stop signal. Thereby, the discharge of the mist by the mist discharge portion 100 is stopped.

In this case, in the present embodiment, as described above, the ejection of the mist is stopped after a fixed time from when the saturation difference becomes 0. In this case, the visibility of the greenhouse main body 10 in a state where the mist is diffused can be adjusted by adjusting the time from when the saturation difference becomes 0 to when the discharge of the mist is stopped. For example, by increasing the time from when the saturation difference becomes 0 to when the discharge of the mist is stopped, the discharge amount of the mist discharged into the greenhouse main body 10 can be increased. This can reduce visibility of the booth body 10 in a state of mist diffusion.

In the present embodiment, the visibility in a state where the mist is diffused is preferably 10m or less. By setting the visibility of the greenhouse main body 10 to 10m or less in a state where the mist is diffused in this manner, the surface of the plant body 2 can be wetted in several minutes. That is, when the visibility is 10m or less for several minutes, fine water droplets adhere to the entire surface of the plant 2 in the greenhouse main body 10 and wet the plant. For example, the entire surface and back of the leaf of the plant body 2 can be wet.

Further, the visibility in a state of mist diffusion is preferably 3m or less. By setting the visibility of the greenhouse main body 10 in a state in which the mist is diffused to 3m or less in this manner, the surface of the plant body 2 can be wetted in about 1 minute. That is, when the visibility is 3m or less, the entire surface of the plant 2 in the greenhouse main body 10 can be wetted with fine water droplets in about 1 minute.

Next, after the inside of the greenhouse main body 10 is preliminarily made into a mist state, the chemicals are sprayed into the greenhouse main body 10 (chemical spraying area) (second step S20).

For example, the control unit 500 outputs a signal (mist discharge stop signal) for stopping the discharge of the mist and outputs a signal (chemical liquid mist discharge start signal) for starting the discharge of the chemical liquid mist at the same time or immediately after the signal (mist discharge stop signal) for stopping the discharge of the mist. As a result, as shown in fig. 7, the chemical solution is supplied to the mist ejection part 100 through the pipe 200, and the mist of the chemical solution is ejected from the mist ejection part 100 while the mist state is maintained in the booth body 10.

Specifically, when the control unit 500 outputs a chemical liquid mist ejection start signal, the pump 210, the valve 220, and the like are controlled to supply the pressurized chemical liquid from the tank 300 to the pipe 200 based on the mist ejection start signal. As a result, since the mist of the chemical liquid is discharged from each mist discharge portion 100, the chemical contained in the mist of the chemical liquid can be dispersed throughout the plant 2 in the greenhouse main body 10.

By spraying the mist of the chemical liquid while the mist is in the state of being diffused in the greenhouse main body 10 in this manner, the chemical liquid mist containing the chemical can be retained in the air of the greenhouse main body 10 for a long time. For example, the chemical liquid mist can stay in the air of the greenhouse main body 10 for several minutes. This enables the chemicals to spread to the corners of the plants 2 in the greenhouse main body 10, thereby increasing the probability of the chemicals adhering to the entire surface of the plants 2. As a result, the probability of the drug adhering to the back surface of the leaves and the vicinity of the growing point of the luxuriant plant 2 can be increased, and therefore the amount of drug spread can be reduced. Even when the plant 2 is luxurious, the chemical can be easily attached to the back surface of the leaf and the vicinity of the growing point of the plant 2 without requiring the worker to manually and locally disperse the chemical.

As described above, the chemical distribution method according to the present embodiment includes the first step S10 of preliminarily making the inside of the greenhouse main body 10 (the inside of the chemical distribution area) as the space inside the agricultural greenhouse become a mist-diffused state, and the second step S20 of distributing the chemical in the chemical distribution area in the mist-diffused state after the first step S10.

Thus, the drug effect can be sufficiently improved with the smallest possible amount of the drug, and the drug can be easily attached to the back surface of the leaves and the vicinity of the growing point of the luxuriant plant. Further, by reducing the amount of the chemical used, it is possible to reduce adverse effects on the human body of the operator due to the scattering of an excessive amount of the chemical, and to reduce the load on the environment.

In the chemical spraying method according to the present embodiment, mist is caused to be diffused by mist having a particle size of 10 μm or more and 100 μm or less in the first step S10.

This makes it possible to easily make the inside of the greenhouse main body 10 (the medicine dispersion area) in a mist-dispersed state before the second step S20.

In this case, in the first step S10, the discharge of the mist is adjusted by the saturation difference. Specifically, the dry bulb temperature and the wet bulb temperature in the greenhouse main body 10 (in the chemical agent spreading region) are measured, the saturation difference is calculated from the temperature difference between the dry bulb temperature and the wet bulb temperature, and the water mist is sprayed until the saturation difference becomes 0.

By controlling the saturation difference in this manner to adjust the discharge of the mist, the inside of the greenhouse main body 10 can be easily made into a mist-diffused state.

In the medicine dispensing method according to the present embodiment, in the second step S20, the medicine is dispensed in the medicine dispensing region by ejecting the mist of the medicine liquid containing the medicine. In this case, the particle size of the mist of the chemical liquid is preferably 10 μm or more and 100 μm or less.

When the particle size of the liquid chemical mist exceeds 100 μm, even when the liquid chemical mist is sprayed in a state where the mist is diffused in advance, there is a risk that the liquid chemical mist falls down in a short time and is hard to stay in the air, and the probability of the liquid chemical adhering to the plant body 2 is greatly reduced. On the other hand, when the particle diameter of the mist of the chemical liquid is 10 μm or less, the outlet 110 of the mist ejection part 100 (nozzle) is easily clogged with the mist of the chemical liquid, and the mist ejection part 100 needs to be frequently cleaned.

Therefore, the chemical liquid mist can be retained in the air in the greenhouse main body 10 (chemical agent scattering area) for a long time by having the particle diameter of the chemical liquid mist be 10 μm or more and 100 μm or less. This makes it possible to more efficiently attach the drug to the back surface of the leaves and the vicinity of the growing point of a luxuriant plant. As a result, the amount of drug dispensed can be reduced.

(modification example)

The present invention has been described above based on the embodiments, but the present invention is not limited to the above embodiments.

For example, in the above embodiment, the agricultural greenhouse 1 is exemplified as the drug application area where the drug is applied, but the invention is not limited thereto. The chemical distribution area does not necessarily need to be a closed space, but is preferably a closed space as in the agricultural greenhouse 1. This enables the drug to be efficiently attached to the object to which the drug is to be attached.

In the present embodiment, the same mist ejection part 100 is used to eject the liquid chemical mist and the mist, but the present invention is not limited thereto. Specifically, a first mist discharge portion for discharging mist of the chemical liquid and a second mist discharge portion for discharging mist may be separated. In this case, a first pipe for supplying the chemical liquid to the first mist discharge part for discharging the mist of the chemical liquid and a second pipe for supplying water to the second mist discharge part for discharging the mist of the water are disposed, respectively. As described above, by ejecting the liquid medicine mist and the mist using different mist ejecting portions (nozzles), the liquid medicine mist can be ejected only to a necessary portion where the medicine is to be dispensed. This enables the liquid medicine mist to be locally ejected with a smaller amount of the medicine. Further, by separating the mist ejection portion of the chemical liquid mist and the mist, clogging of the ejection port by the chemical of the chemical liquid mist can be suppressed. In addition, as in the above-described embodiment, when the mist of the chemical liquid and the mist are ejected using one mist ejection portion, it is preferable to periodically clean the mist ejection portion 100 so that the chemical in the mist does not block the ejection port.

In the above embodiment, the mist is discharged as a pretreatment before the chemical mist is sprayed, but the present invention is not limited thereto, and the discharge of the mist may be performed for air conditioning management. For example, when the temperature inside the greenhouse main body 10 is controlled by spraying mist, the control unit 500 controls the mist spraying unit 100 so that the temperature inside the greenhouse main body 10 becomes a preset temperature (set temperature) based on the temperature measured by the temperature sensor provided inside the greenhouse main body 10. Specifically, when the temperature in the greenhouse main body 10 is higher than the set temperature or will be higher than the set temperature, the control unit 500 causes the mist discharge unit 100 to discharge the mist, thereby reducing the temperature in the greenhouse main body 10. The control unit 500 may determine the time (spraying time) for spraying the mist and the time (spraying interval) for stopping the spraying of the mist, and may perform the spraying of the mist such that the temperature in the greenhouse main body 10 changes according to a preset temperature schedule for one day.

In the above embodiment, the control unit 500 is provided in the greenhouse main body 10, but is not limited thereto. For example, the control unit 500 may be provided at a place other than the greenhouse main body 10. In this case, the agricultural greenhouse 1 is not referred to as the greenhouse main body 10 itself, but is configured as an agricultural system including the control unit 500 provided outside the greenhouse main body 10. The control unit 500 may be a server instead of a processor.

In the above embodiment, soil cultivation in which the plant bodies 2 are planted in soil has been described, but the present invention can also be applied to cultivation of the plant bodies 2 on an isolated bed (japanese: isolated bed) in which root water permeable cloth (japanese: root water permeable proof シート) or the like is laid on soil.

In addition, the present invention includes a mode obtained by applying various modifications that can be conceived by a person skilled in the art to the above-described embodiment, and a mode realized by arbitrarily combining the structural elements and functions in the above-described embodiment within a scope not departing from the gist of the present invention.

In the above description, the control unit 500 may be an electric circuit. These circuits may be integrated into one circuit or may be separate circuits. These circuits may be general-purpose circuits or dedicated circuits.

The processing described as the operation of the control unit 500 may be executed by a computer. For example, the computer executes the above-described processes by executing programs using hardware resources such as a processor (CPU), a memory, and an input/output circuit. Specifically, the processor acquires data to be processed from a memory, an input/output circuit, or the like, performs an operation on the data, and outputs the operation result to the memory, the input/output circuit, or the like, thereby executing each process.

The program for executing the above-described respective processes may be recorded on a non-transitory recording medium such as a computer-readable CD-ROM. In this case, the computer reads out the program from the non-transitory recording medium and executes the program, thereby executing each process.

Description of the reference numerals

1: a greenhouse for agriculture; 500: a control unit.

Claims

1. A method of disseminating a medicament comprising:

a first step of preliminarily making the inside of the drug dispersion region in a mist-dispersed state by spraying mist until a saturation difference in the drug dispersion region becomes 0; and

a second step of, after the first step, dispersing the drug in the drug dispersion region in a mist-dispersed state.

2. The drug dispersion method according to claim 1,

the agent spreading area is a space in the agricultural greenhouse.

3. A method of disseminating a medicament comprising:

a first step of preliminarily making the inside of the drug application region in a mist-dispersed state; and

a second step of dispersing the drug in the drug dispersion region in a mist-dispersed state after the first step,

wherein the visibility of the mist-diffused state is 10m or less.

4. A method of disseminating a medicament comprising:

wherein the visibility of the mist-diffused state is 3m or less.

5. A method of disseminating a medicament comprising:

wherein in the first step, the mist is formed in a state of being diffused by mist having a particle diameter of 10 μm or more and 100 μm or less.