JP2023023128A - Fruit cultivation system and fruit cultivation method - Google Patents

Abstract

To provide a fruit cultivation system and a fruit cultivation method that efficiently control a surrounding environment of fruits so as to fit for the cultivation of the fruits, thereby preventing damage such as dehiscence.SOLUTION: A fruit cultivation system comprises: at least an air controller that controls air humidity; a circulation pipeline that is connected to the air controller and allows the circulation of controlled air which is air controlled by the air controller; a plurality of coating parts that form a clearance with the fruits and cover them; a sending tubule that is connected to the circulation pipeline and the coating parts and guides the controlled air to the coating parts; and a receiving tubule that is connected to the coating parts and the circulation pipeline and guides air in the coating parts to the circulation pipeline.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD The present invention relates to a fruit cultivation system for cultivating fruits by adjusting the surrounding environment of the fruits, and a fruit cultivation method using the same.

In order to grow fruits such as grapes and ship them as products, it is necessary to ensure a certain level of quality. Since the quality of fruits is greatly affected by the surrounding environment including climate, soil, and pests and diseases, it is essential to consider the surrounding environment in order to cultivate high-quality fruits. Insufficient consideration for the surrounding environment causes various damages such as stunted growth and disease and pest damage. One of the phenomena caused by such damage is the phenomenon of fruit cracking.

Fruit cracking is a phenomenon in which the fruit cracks, and is sometimes called fruit cracking. Fruit cracking is caused by disease and pest damage, excessive adhesion of the fruit, etc., but one of the major causes is an increase in moisture content in the fruit due to rainfall, etc. It is thought that when the moisture inside the fruit increases due to water absorption during the ripening stage, the pericarp bursts due to the turgor pressure. This increase in intra-fruit moisture is caused not only by excessive soil moisture, but also by high atmospheric humidity, and there is a view that the latter has a large effect on the development of fruit cracking.
Fruit cracking also occurs in grapes, and the recent abnormal weather around July to September, which is the ripening period of grapes, may increase the damage of grape cracking, so immediate measures are desired.

As described above, the high atmospheric humidity is one of the factors that cause fruit cracking, so controlling the humidity can be expected to suppress fruit cracking. However, even when cultivating grapes in a greenhouse such as a vinyl greenhouse in order to control the humidity, controlling the humidity in the entire greenhouse poses economic problems and is difficult to achieve. Therefore, there is a demand for a humidity control technology that also takes into consideration the economic aspect.

For example, Patent Document 1 describes a plant that dissipates temperature- and humidity-controlled air into fruit bags for the purpose of enabling local cooling that helps plant growth and fruit coloring while reducing capital investment. A cultivation device is disclosed. In the plant cultivation apparatus of Patent Document 1, temperature- and humidity-controlled air is obtained from warm air and cold air obtained by the vortex tube, and this air is used to grow plants such as grapes using the back pressure of the vortex tube. It is locally diffused.

JP 2006-246879 A

However, in the plant cultivation apparatus of Patent Literature 1, the temperature- and humidity-controlled air is dissipated into the fruit bag. and may consume more energy.

The present invention has been made under the circumstances as described above, and an object of the present invention is to efficiently adjust the surrounding environment of fruits so as to be suitable for cultivating fruits, thereby suppressing damage such as cracked fruits. To provide a fruit cultivating system and a fruit cultivating method.

As a result of earnest research to solve the above problems, the inventors of the present invention have found that the following inventions meet the above objects, and have completed the present invention.

That is, the present invention relates to the following inventions.
<1> An air conditioning unit that adjusts at least the humidity of the air, a circulation pipe that is connected to the air conditioning unit and circulates the conditioned air that is air conditioned by the air conditioning unit, and a gap between the fruits. forming a plurality of sheaths covering the fruit; delivery capillaries connected to the circulation line and the sheath and directing the conditioned air to the sheath; connected to the sheath and the circulation line; and a receiving narrow tube that guides air in the covering portion to the circulation pipe.
<2> The delivery capillary is connected to the circulation pipe such that the opening of the end of the delivery capillary connected to the circulation pipe faces the direction opposite to the direction in which the regulated air flows in the circulation pipe. , the receiving capillary is connected to the circulation pipe such that the opening surface of the end of the receiving capillary connected to the circulation pipe faces the same direction as the direction in which the conditioned air flows in the circulation pipe. 1>.
<3> The fruit cultivation system according to <1> or <2>, in which the air conditioning unit adjusts humidity and temperature of air.
<4> The fruit according to any one of <1> to <3>, wherein the inner diameters of the connected delivery capillary and the receiving capillary are increased as they are located downstream of the flow of the regulated air in the circulation pipe. cultivation system.
<5> An end portion of the sending capillary tube connected to the covering portion and an end portion of the receiving capillary tube connecting to the covering portion have small holes and are inserted into the covering portion <1> The fruit cultivation system according to any one of <4>.
<6> The circulation pipe comprises a circulation main pipe, a circulation branch pipe, a circulation small branch pipe, and a circulation narrow pipe, each of which has an inner diameter that gradually decreases, and the circulation main pipe and the circulation branch pipe are connected to the air adjustment section, and the delivery narrow pipe And the fruit cultivation system according to any one of <1> to <5>, wherein the receiving tubule is connected to the circulation tubule.
<7> The fruit cultivation system according to <6>, wherein the circulation main pipe, the circulation branch pipe, the circulation small branch pipe, and the circulation tubule are connected via a Y pipe.
<8> The fruit cultivation system according to any one of <1> to <7>, further comprising drug addition means for adding a drug used for cultivating the fruit to the regulated air.
<9> The fruit cultivation system according to any one of <1> to <8>, wherein the air conditioning unit adjusts air so as to suppress cracking of the fruit.
<10> A method for cultivating fruit, comprising using the system for cultivating fruit according to any one of <1> to <9>.
<11> The fruit cultivation method according to <10>, wherein the fruit is a grape fruit.

According to the fruit cultivating system and fruit cultivating method of the present invention, the controlled air is circulated and flowed through the covering portion covering the fruit, so that the surrounding environment of the fruit can be locally and efficiently adjusted. , damage such as cracked fruit can be suppressed at low cost.

1 is a perspective view showing an example of a greenhouse in which a fruit cultivation system according to the present invention is used; FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is a top view which shows the example (1st Embodiment) of the fruit cultivation system which concerns on this invention. FIG. 4 is a schematic diagram of a connection point between a delivery capillary, a reception capillary, and a circulation capillary. It is a schematic diagram of the covering part in the state which covered the grape fruit. It is a top view which shows the example (2nd Embodiment) of the fruit cultivation system which concerns on this invention.

The present invention circulates the air (conditioned air) adjusted by the air conditioning unit through the circulation pipe. Then, the air is flowed through the delivery capillary connected to the circulation pipe to the covering part covering the fruit, and the air in the covering part is returned to the circulation pipe through the receiving capillary connected to the circulation pipe. Therefore, the range of the ambient environment to be adjusted is not the entire greenhouse such as a vinyl greenhouse where fruits are grown, but only the inside of the air conditioning section, circulation pipe, delivery tubule, receiving tubule, and covering section, so local adjustment is not possible. This makes it possible to accurately adjust the surrounding environment of the fruit without using a large-scale device.

Further, in the present invention, part of the air circulating in the circulation pipe is returned to the circulation pipe in the flow of the delivery thin tube → the covering part → the receiving thin tube, so the air flow in the circulation pipe is weakened. Air can be circulated with less pressure, and efficient adjustment is possible. Since the surrounding environment is adjusted locally, precisely, and efficiently in this manner, damage to fruits such as cracked fruit can be suppressed at low cost.

BEST MODE FOR CARRYING OUT THE INVENTION Below, embodiments of the present invention will be described with reference to the drawings. In addition, in each figure, the same code|symbol may be attached|subjected to the same component and description may be abbreviate|omitted. Furthermore, numerical values, shapes, etc. in the following description are examples, and the present invention is not limited to these. In addition, although the present embodiment is an example of suppressing fruit cracking in grape cultivation, the present invention is not limited to grape cultivation, and can be applied to the cultivation of other fruits. It is also effective for promotion of fruit growth such as coloring.

An example (first embodiment) in which the fruit cultivation system according to the present invention is used for cultivating grapes in a greenhouse will be described.

FIG. 1 is a perspective view of a greenhouse 1, and FIG. 2 is a plan view of a fruit cultivation system 2 used in the greenhouse 1. FIG. In FIG. 2 , the fruit cultivation system 2 is shown larger than the greenhouse 1 in order to clearly show the structure of the fruit cultivation system 2 inside the greenhouse 1 .
The vinyl house 1 is a series of buildings composed of a plurality of buildings, and in this embodiment, it consists of 10 buildings, and in FIGS. Each building has an arched ceiling. The frontage (horizontal width) (the length in the horizontal direction in FIG. 2) and the depth (the length in the vertical direction in FIG. 2) of each building can be set as appropriate. It's becoming The boundary between each building (hereinafter referred to as "building boundary") is not covered with vinyl, and a plurality of pillars supporting the greenhouse 1 stand.

Grapes 3 are planted along the ridge boundary with an H-shaped branching method. That is, the main trunks of a plurality of grapes 3 extend vertically from the ground located at the boundary of the ridge, and the main branches spread out in an H shape from there, extending in the depth direction of the greenhouse 1 as shown in FIG. there is Twigs grow from the main branch, and a fruit (grape berry) grows on each twig. Only the main branch is shown in FIG.

The fruit cultivation system 2 includes an air conditioning unit 10 that adjusts the air to humidity and temperature suitable for suppressing cracking of the grapes 3, a covering unit 90 that covers the grape fruit 3A (see FIG. 4 described later), and an air conditioning unit 10. A circulation pipe for circulating the air, a delivery narrow pipe 60 for guiding the circulating air to the covering portion 90, and a receiving narrow pipe 70 for guiding the air in the covering portion 90 to the circulation pipe are provided.

The air conditioning unit 10 is located outside the greenhouse 1 and is connected to a circulation pipe, which is piped inside the greenhouse 1 . Note that the air conditioning unit 10 may be installed inside the greenhouse 1 .
In the air conditioning unit 10, in order to suppress the cracking of the grapes 3, the air conditioning unit 10 is a closed space surrounded by walls or the like, and the air in the space is adjusted to a predetermined humidity and temperature using a commercially available device. and the conditioned air is delivered. Specifically, an air conditioner (hereinafter abbreviated as "air conditioner") that automatically adjusts humidity and temperature to set values and an electric blower are used.
In order to suppress fruit cracking, it is preferable to create a low-humidity and low-temperature environment around the grape fruit 3A, so use an air conditioner to set the air in the air conditioning unit 10 to such an environmental humidity and temperature. .

The specific humidity and temperature are appropriately determined based on experiments and known knowledge in the relevant field, taking into consideration the grape variety, the growth condition of the grapes 3A, and the like.

For example, regarding the humidity, the humidity in the early stage of growth of the grape fruit 3A is set to the same level as the inside of the vinyl house 1 (60 to 70%), and the humidity in the covering part 90 is adjusted to 50 according to the growth so as not to cause cracking. % or less, 30% or less, or 20% or less (immediately before harvest). As for the temperature, since the temperature at which the grapes 3A begin to color is about 23° C., it is preferable to control the temperature of the air to be circulated to 15° C. to 23° C. (nighttime temperature). In addition, if the grapes 3 are strongly dried in the latter half of the ripening period, it is necessary to pay attention to phenomena other than cracking, such as shedding of seeds far from the root. The air conditioned by the air conditioner is delivered to the circulation pipe connected to the air conditioning unit 10 using an electric blower. The amount of air blown out by the electric blower is set according to the size and structure of the circulation pipe installed in the greenhouse 1, and is set to 20 m ³ /min, for example.

It should be noted that only the humidity in the air-conditioning unit 10 may be controlled by an air conditioner, since even a low-humidity environment is effective in suppressing fruit cracking. In this case, a dehumidifier may be used instead of an air conditioner. If the air conditioner is equipped with an air cleaning function, the function may be enabled. An air agitator, such as a circulator, may be used to effectively condition the air within the air-conditioning section 10 . Further, instead of configuring the air conditioning unit 10 with a commercially available device, a dedicated device may be manufactured.

The circulation pipe is composed of a circulation main pipe 20, a circulation branch pipe 30, a circulation small branch pipe 40 and a circulation tubule 50. Further, the circulatory branch 30 is composed of the circulatory branches 31 and 32, the circulatory small branch 40 is composed of the circulatory small branches 41 and 42, and the circulatory tubule 50 is composed of the circulatory tubules 51 and 52, respectively.
The circulation main pipe 20, the circulation branch pipe 30, the circulation small branch pipe 40, and the circulation narrow pipe 50 are rigid polyvinyl chloride pipes (commonly known as PVC pipes), and the inner diameters thereof decrease in this order. For example, the inner diameter of the circulation main tube 20 is 100 mm, the inner diameter of the circulation branch tube 30 is 65 to 70 mm, the inner diameter of the circulation small branch tube 40 is 30 mm, and the inner diameter of the circulation narrow tube 50 is 25 mm. The circulation pipe may be a pipe made of other materials such as an iron pipe instead of a PVC pipe.

The circulation main pipe 20 is connected to the air conditioning section 10 . Specifically, it is connected to the discharge port of the electric blower in the air conditioning section 10 , penetrates the wall of the air conditioning section 10 , and extends into the inside of the greenhouse 1 . Inside the greenhouse 1, the circulation main pipe 20 is positioned substantially in the center of the greenhouse 1 in the depth direction (vertical direction in FIG. 2) and extends horizontally in the frontage direction (horizontal direction in FIG. 2). is plumbed. Therefore, it is preferable to install the air conditioning unit 10 near the center of one end surface (side surface) of the greenhouse 1 in the frontage direction.
For example, when the air conditioner 10 is installed outside one side of the greenhouse 1 as shown in FIG. is extended to The end face of circulation main 20 facing the other side is closed. The circulation main pipe 20 is laid at a position higher than the grape berries 3A, and is fixed to pipes or the like that form and support the greenhouse 1 with metal fittings, wires, or the like.

The circulation branch pipes 31 and 32 constituting the circulation branch pipe 30 are also connected to the air conditioning section 10 . The circulation branch pipes 31 and 32 are connected to separate openings drilled in the wall of the air conditioning section 10 by fitting the end faces of the circulation branch pipes 31 and 32 respectively.

Inside the greenhouse 1, as shown in FIG. 2, the circulation branch pipe 31 extends along the side from the point where it is inserted into the inside of the greenhouse 1 to one gable surface (upper part in FIG. 2). It bends vertically near the face and extends to the other side along the gable face. The piping of the circulation branch pipe 32 is symmetrical with the piping of the circulation branch pipe 31 .

That is, the circulation branch pipe 32 extends along the side surface from the point where it is inserted into the interior of the greenhouse 1 to the other gable surface (lower part in FIG. 2), bends vertically near the gable surface, and extends to the gable surface. along the other side. The end faces of the circulation branch pipes 31 and 32 facing the other side are closed. The height at which the circulation branch pipes 31 and 32 are laid is the same height as the circulation main pipe 20, and like the circulation main pipe 20, they are fixed to a pipe or the like that forms and supports the greenhouse 1 with metal fittings, wires, or the like. ing.

The small circulation pipe 41 constituting the small circulation pipe 40 is connected to the main circulation pipe 20, and the small circulation pipe 42 is connected to the circulation branch pipe 30 (circulation branch pipe 31 or 32).

The circulation small branch pipe 41 extends from the circulation main pipe 20 toward each main branch of the grape 3 that develops on both sides of the circulation main pipe 20 (above and below the circulation main pipe 20 in FIG. 2). 4 pipes are laid in the vicinity of each. Since the air flowing through the circulation main pipe 20 flows through the circulation small branch pipe 41 to the circulation small pipe 50, the circulation small branch pipe 41 is obliquely connected to the circulation main pipe 20 so that the air can flow easily. . Specifically, the circulation small branch pipe 41 is connected to the circulation main pipe 20 so that the direction of the air flowing in the circulation main pipe 20 from the connection point and the direction of the air flowing in the circulation small branch pipe 41 form an acute angle. Connected. A Y pipe is used as a joint for the connection. Therefore, the circulation small branch 41 connected to the circulation main pipe 20 in one direction (the circulation small branch 41 connected to the upper part of the circulation main pipe 20 in FIG. 2 or the circulation small branch pipe connected to the bottom 41) is connected to the circulation main 20 offset from the circulation small branch 41 connected in the other direction.

The small circulation pipe 42 is paired with the small circulation pipe 41, extends from the circulation branch pipe 30 toward each main branch of the grape 3, and is connected to the circulation branch pipe 31 in the vicinity of the ridge boundary. Two pipes connected to the circulation branch pipe 32 are piped for a total of four pipes. Since the air from the circulation tubule 50 flows through the circulation small branch tube 42 to the circulation branch tube 30, the circulation small branch tube 42 is positioned relative to the circulation branch tube 30 so that the air can flow easily in the same way as the circulation small branch tube 41. connected diagonally. Specifically, the circulation branch tube 42 is connected to the circulation branch tube 30 so that the direction of the air flowing in the circulation branch tube 30 toward the connection point and the direction of the air flowing in the circulation branch tube 42 form an acute angle. are doing. For connection, a Y pipe is used as a joint, similar to the circulation small branch pipe 41 .

A valve 80 is installed in the circulation small branch tube 40 . By adjusting the amount of air flowing through circulation small branch 40 by means of valve 80 , the amount of air ultimately delivered to sheath 90 is adjusted. Note that the valve 80 may be omitted in consideration of cost and the like.

Circulatory tubule 50 is connected to circulatory small branches 41 and 42 . Two circulation tubules 50 (circulation tubules 51 and 52) are connected to one set of circulation tubules 41 and . Specifically, a bifurcated Y pipe is used as a joint, and the end of the circulation small branch pipe 41 that is not connected to the circulation main pipe 20 is adhered to the opening of the unbranched Y pipe. , one end of each of the circulation tubules 51 and 52 is glued to the two openings of the branched Y tube.

The circulation tubules 51 and 52 extend in parallel in the depth direction of the greenhouse 1 so as to sandwich the main branch of the grape 3 . Then, the other end of each of the circulation capillaries 51 and 52 and the end of the circulation small branch tube 42 are adhered to the openings of the bifurcated Y tube, which is a joint, as in the case of the circulation small branch tube 41. there is

In this embodiment, since the depth of the greenhouse 1 is 50 m, the length of one circulating tubule 50 is approximately 25 m. Like the circulation main pipe 20 and the circulation branch pipe 30, the circulation tubule 50 is fixed to a pipe or the like that forms and supports the vinyl greenhouse 1 with metal fittings, wires, or the like.

With such a configuration of the circulation pipes, the air adjusted in the air conditioning unit 10 flows from the air conditioning unit 10 as indicated by the arrows in FIG. Circulation tubules 51 and 52 ), then circulation small branch tube 42 , circulation branch tube 30 (circulation branch tube 31 or 32 ), in that order, and returns to air control unit 10 .

The delivery capillary tube 60 and the receiving capillary tube 70 are tubes made of silicone rubber, which is rubber-like among silicone resins, and have an inner diameter smaller than that of the circulation capillary tube 50, for example, 5 to 7 mm. It should be noted that other materials may be used instead of silicone rubber.

The delivery capillaries 60 and the reception capillaries 70 are paired one by one adjacently and are connected to the circulation capillaries 50 at regular intervals. The ends of the delivery capillary tube 60 and the receiving capillary tube 70 that are not connected to the circulation capillary tube 50 are inserted inside the sheath 90 . Therefore, the number of sending capillaries 60 and receiving capillaries 70 connected to one circulation capillaries 50 is the number that matches the number of growing grapes 3A expected in the range of the length of the circulation capillaries 50. For example, in this embodiment, the length of the circulation capillary 50 is about 25 m, so the delivery capillary 60 and the receiving capillary 70 are connected to the circulation capillary 50 at intervals of about 14 cm. 60 and receiving tubule 70 are connected.

The air in the covering portion 90 is added to the air flowing through the circulating tubule 50 via the receiving tubule 70 as the air flows, and the temperature of the air rises. Therefore, the inner diameters of the delivery capillaries 60 and the reception capillaries 70 connected to the circulation capillaries 50 are increased from the upstream to the downstream of the flow, that is, from a position closer to the circulation capillaries 41 to a position closer to the circulation capillaries 42. there is For example, among the 175 sets of delivery capillaries 60 and receiving capillaries 70 connected to one circulation capillaries 50, from upstream to downstream of the air flow, the first 60 sets have an inner diameter of 5 mm, the next 60 sets have an inner diameter of 5 mm, and is 6 mm, and the inner diameter of the remaining 55 sets is 7 mm.

As a result, the amount of air flowing into the covering portion 90 increases as it goes downstream, thereby suppressing a decrease in the cooling effect. If the temperature rise of the downstream air is not large, or if the decrease in cooling effect is suppressed by other means, the inner diameters of the sending capillary tube 60 and the receiving capillary tube 70 may be the same size without changing. .

FIG. 3 shows a schematic diagram of connection points between the delivery capillary tube 60 and the receiving capillary tube 70 and the circulation capillary tube 50 .
FIG. 3 shows the internal structure of the circulation tubule 50 when the circulation tubule 50 is cut along a plane extending in the longitudinal direction of the circulation tubule 50 through these connection points. Arrows indicate the direction of air flow.

The delivery capillary tube 60 and the receiving capillary tube 70 are inserted into the circulation capillary tube 50 through separate openings drilled in the circulation capillary tube 50 . The delivery capillary tube 60 is installed so that the opening surface of the end of the delivery capillary tube 60 faces the direction opposite to the direction in which the air in the circulation capillary tube 50 flows. The opening face of the part is installed so as to face the same direction as the direction in which the air in the circulation tubule 50 flows.

In FIG. 3, since the air in the circulation tubule 50 flows from right to left, the opening surface of the delivery tubule 60 faces right and the opening surface of the reception tubule 70 faces left. This makes it easier for the air flowing through the circulation narrow tube 50 to flow into the delivery narrow tube 60 , and makes it easier for the air flowing through the receiving narrow tube 70 to flow out to the circulation narrow tube 50 . To prevent the delivery capillary 60 and the receiving capillary 70 from moving within the circulation capillary 50 , the respective ends and/or portions adjacent to the openings drilled in the circulation capillary 50 may be glued to the circulation capillary 50 . Alternatively, the delivery capillary tube 60 and the receiving capillary tube 70 may be detachably inserted into the circulation capillary tube 50 .
The ends of the delivery capillary tube 60 and the receiving capillary tube 70 that are not connected to the circulation capillary tube 50 are inserted inside the covering portion 90 . The end faces of the delivery capillary tube 60 and the receiving capillary tube 70 are open, and a plurality of small holes are drilled in the ends. By drilling the small holes, the end surfaces of the delivery tubule 60 and the reception tubule 70 are prevented from adhering to the inner surface of the covering portion 90 and becoming closed. In addition, when there is no risk of such adhesion occurring, it is not necessary to drill small holes.

The covering part 90 covers the grape 3A and forms a gap around the grape 3A, which is a closed space isolated from the outside. The surrounding environment of the grape 3A is adjusted by sending the air adjusted by the air adjustment part 10 to this gap.

FIG. 4 shows a schematic diagram of the covering portion 90 covering the grape fruit 3A. The covering part 90 is bag-shaped and has a size that covers the entire grape fruit 3A and forms a gap of a certain size.
It is preferable that the covering portion 90 has low moisture permeability so as not to be affected by the external humidity environment, and high visible light permeability so that the state of the grape 3A can be confirmed from the outside. In this embodiment, the covering portion 90 is formed of a transparent film made of polyvinylidene chloride, polypropylene, or the like. Note that the covering portion 90 may be made of a material other than the transparent film made of these materials, and may be a container harder than the film instead of the bag.

From the opening of the covering part 90, the delivery tubule 60 and the reception tubule 70 are inserted together with the grape 3A, and the opening is closed while the twig on which the grape 3A is growing, the delivery tubule 60 and the reception tubule 70 are bundled. The closed part is bound with a string-like member or the like.

The delivery capillaries 60 are inserted so that the end opening faces are positioned above the covering part 90 , and the receiving capillaries 70 are inserted so that the end opening faces are positioned below the covering part 90 . there is As a result, the air adjusted by the air conditioning unit 10 is efficiently distributed from the delivery tubule 60 to the entire grape fruit 3A, and the air in the covering section 90 is efficiently discharged from the reception tubule 70.
In addition, as described above, small holes 61 and 71 are formed in the end of the delivery capillary 60 and the end of the reception capillary 70, respectively, so that the opening surface of the delivery capillary 60 and the opening surface of the reception capillary 70 are covered. It is kept from adhering to the inner surface of the portion 90 .

In order to reduce the influence of outside air temperature on the interior of the covering portion 90, the covering portion 90 may be covered with a sheet having heat insulation or heat shielding properties. For example, a sheet of high-density polyethylene may be placed over or over the cover 90 . Further, the sheet may be covered with, for example, a polyethylene bag or a nylon net having an opening at the bottom to keep out birds.
In addition, as in the case of the covering part 90, by wrapping a sheet having heat insulation and heat shielding properties around the circulation pipe, the influence of the outside temperature on the air flowing inside the pipe is reduced, and more efficiently at low humidity. It is also possible to create a cold environment.

In addition, the air conditioning unit 10 sets the air conditioner so that the humidity and temperature inside the air conditioning unit 10 are appropriate values for suppressing fruit cracking, but the humidity and temperature inside the covering unit 90 are measured. You may adjust the setting value in an air conditioner so that a value may become a value suitable for fruit crack control. Thereby, humidity and temperature can be adjusted more appropriately.

Another embodiment of the present invention will be described.

In the first embodiment, the air conditioning unit 10 only delivers air whose humidity and temperature have been adjusted. Additional means may be further provided. For example, it is possible to atomize chemical substances used to promote the growth of grapes 3, prevent diseases, etc., and add them to the air to be delivered. For example, a fumigating agent or vapor such as hypochlorous acid water is added to the air to be delivered. By adding a smoking agent, pests can be controlled, and by adding hypochlorous acid water, sterilization and sterilization can be performed.

When the grape fruit 3A is covered with a bag or the like such as the covering unit 90, it is usually difficult to spray the grape fruit 3A with such a smoke-like chemical substance, but the air sent from the air adjustment unit These additions enable these to be sprayed.

An example (second embodiment) of a fruit cultivation system corresponding to the above is shown in FIG. In the fruit cultivation system 4 of the second embodiment, as compared with the fruit cultivation system 2 of the first embodiment shown in FIG. Means 12 are provided.

The chemical addition means 12 is composed of a fumigation agent and a hypochlorous acid water sprayer. These are used simultaneously or separately to add fume-like fumigants and/or hypochlorous acid water to the air delivered by the air conditioning section 11 to the circulation main 20 .
The chemical addition means 12 may generate a gas containing beneficial bacteria such as noble rot (Botrytis cinerea) in addition to the fume-like smoke agent and hypochlorous acid water. Moreover, although the medicine adding means 12 is provided in the air conditioning section 11 , it may be connected directly to the circulation main pipe 20 independently of the air conditioning section 11 .

In the above-described embodiment, the circulation pipe is composed of four types of pipes, ie, the main circulation pipe 20, the branch pipes 30, the small branch pipes 40, and the narrow pipes 50. It may be configured with the number of types of Also, the number of each tube is not limited to the above, and other numbers may be used. The inner diameter of each tube is not limited to the above, and can be changed as appropriate, and all the tubes may have the same inner diameter.

The entire plastic greenhouse 1 may be covered with a windbreak net. The delivery capillary tube 60 and the receiving capillary tube 70 are made of silicone rubber, and the ends inserted into the covering part 90 are not fixed. have a nature. By covering the entire vinyl house 1 with a windbreak net, the possibility can be reduced. The use of windbreak nets can also limit damage to grape berries and shoots.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications are possible without departing from the gist of the present invention. In addition, matters that are not explicitly disclosed in the above embodiments, such as the dimensions and weight of the components, do not deviate from the range that a person skilled in the art usually implements, and a person skilled in the art can easily imagine them. Any possible value can be adopted.

1 vinyl greenhouses 2, 4 fruit cultivation system 3 grapes 3A grape berries 10, 11 air conditioner 12 drug addition means 20 circulation main pipes 30, 31, 32 circulation branch pipes 40, 41, 42 circulation small branch pipes 50, 51, 52 circulation tubules 60 sending capillaries 61, 71 small hole 70 receiving capillaries 80 valve 90 cover

Claims (11)

an air conditioning unit that regulates at least the humidity of the air;
a circulation pipe that is connected to the air conditioning unit and circulates the conditioned air, which is the air that has been conditioned by the air conditioning unit;
A plurality of covering parts that form a gap between the fruit and cover the fruit;
a delivery capillary connected to the circulation pipe and the sheath and guiding the conditioned air to the sheath;
A fruit cultivation system comprising: a receiving capillary connected to the covering section and the circulation pipe and guiding air in the covering section to the circulation pipe. the delivery capillary is connected to the circulation pipe such that the open surface of the end of the delivery capillary connected to the circulation pipe faces a direction opposite to the direction in which the regulated air flows in the circulation pipe;
3. The receiving capillary is connected to the circulation pipe such that the opening of the end of the receiving capillary connected to the circulation pipe faces the same direction as the direction in which the regulated air flows in the circulation pipe. 2. The fruit cultivation system according to 1. The fruit cultivation system according to claim 1 or 2, wherein the air conditioning unit regulates humidity and temperature of air. 4. The fruit cultivation system according to any one of claims 1 to 3, wherein the inner diameters of the connected delivery narrow pipe and the receiving narrow pipe increase as they are located downstream of the flow of the regulated air in the circulation pipe. 5. An end portion of said sending capillary tube connected to said covering portion and an end portion of said receiving capillary tube connecting to said covering portion have small holes and are inserted into said covering portion. A fruit cultivation system according to any one of the above. The circulation pipe is composed of a circulation main pipe, a circulation branch pipe, a circulation small branch pipe, and a circulation narrow pipe, the inner diameters of which gradually decrease,
the circulation main pipe and the circulation branch pipe are connected to the air conditioning unit;
6. A fruit cultivation system according to any one of claims 1 to 5, wherein said delivery capillaries and said receiving capillaries are connected to said circulation capillaries. 7. The fruit cultivation system according to claim 6, wherein the connection among the main circulation pipe, the branch pipes, the small branch pipes and the tubules is made through a Y pipe. 8. The fruit cultivation system according to any one of claims 1 to 7, further comprising chemical adding means for adding a chemical used for cultivating the fruit to the conditioned air. 9. The fruit cultivation system according to any one of claims 1 to 8, wherein the air adjustment unit adjusts air so as to suppress cracking of the fruit. A fruit cultivation method using the fruit cultivation system according to any one of claims 1 to 9. 11. The fruit cultivation method according to claim 10, wherein the fruit is a grape fruit.

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