JP2017060420A - Mist spraying method to plant body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mist spraying method to a plant body in which an uneven spraying amount of mist can be suppressed even for a plant body whose leaves are overlapped with each other in a vertical direction.SOLUTION: A mist spraying method includes the steps of: atomizing mist to be sprayed onto a plant body 10; and inclining an above-ground part 11 of the plant body 10 at least in the timing of atomizing mist. In the case where there are a plurality of the plant bodies 10, above-ground parts 11 of two plant bodies 10 are inclined in directions where top parts of the plant bodies 10 separate from each other in a direction connecting between the two plant bodies 10 in the step of inclining the above-ground part 11 of the plant body 10. Further, in the step of inclining the above-ground parts 11 of the plant bodies 10, the above-ground parts 11 of the plant bodies 10 are inclined by moving a fastener 51 connected to a part of the above-ground part 11 of the plant body 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method for spraying mist on a plant body.

  Conventionally, a mist sprinkler for spraying mist on plants has been proposed (see, for example, Patent Document 1). The mist watering device of Patent Document 1 is configured for the purpose of watering garden plants, garden plants, fern plants, moss plants, orchids, and the like.

JP2013-46600A

  By the way, depending on the type of plant body, the leaves may overlap each other, and even if mist is sprayed from above the leaves of the plant body, the mist is not sprayed much on the relatively lower leaves. there is a possibility. That is, depending on the type of plant body, there is a possibility that the distribution of the amount of mist is generated between the upper and lower leaves.

  An object of this invention is to provide the mist spraying method to the plant body which can suppress the dispersion | variation in the dispersion amount of mist even if it is a plant body with which the leaf has piled up and down.

  The method for spraying mist on a plant according to the present invention includes spraying mist to be sprayed on the plant, and tilting the above-ground part of the plant at least at the timing of spraying the mist. To do.

  According to the structure of this invention, even if it is a plant body with which the leaf has piled up and down, it has the advantage that the dispersion | variation in the amount of spraying of mist can be suppressed.

FIG. 1A is a front view showing a state where the plant body is not inclined in the embodiment, and FIG. 1B is a front view showing a state where the plant body is inclined in the embodiment. It is a perspective view which shows a part of embodiment. It is a perspective view which shows the structural example of the agricultural house used for embodiment. It is the schematic which shows the whole structure of embodiment. It is a top view which shows arrangement | positioning of the nozzle in embodiment. FIG. 6A is a plan view showing an example in which the plant bodies are inclined in directions opposite to each other in the direction connecting the two plant bodies in the embodiment, and FIG. 6B is the direction intersecting the direction connecting the two plant bodies in the embodiment. It is a top view which shows the example in which a plant body inclines in a different direction. FIG. 7A is a front view showing a state in which the two-tailored plant body is not inclined in the embodiment, and FIG. 7B is a front view showing a state in which the two-tailored plant body is inclined in the embodiment. It is a figure which shows the example which supports a plant body with a supporting member in embodiment.

  The technology of the present embodiment described below is assumed to be applied to a plant cultivated inside an agricultural house, but not only a plant cultivated inside an agricultural house but also a plant cultivated in an open field. Even the body can be adopted. The plant body can be selected from fruit vegetables, beans, fruits, flowers and the like. In many cases, this type of plant has a maximum above-ground height higher than that of leafy vegetables, and some leaves often overlap vertically. If this kind of plant is fruit and vegetables, tomato, cucumber, eggplant, etc. correspond.

  Although the technology of this embodiment is not assumed to be applied to plants that perform ground cultivation, such as pumpkins, watermelons, and melons, these plants are also selected from struts, wires, nets, and the like. When cultivating using a support member, it may become applicable. Moreover, although the plant body in which most of the above-ground part is a leaf like leaf vegetables is not assumed to apply the technique of this embodiment, in the case of a relatively flexible leaf vegetable, it may become applicable.

  In this embodiment, the mist is sprayed on the plant body by bringing the plant body into contact with low-temperature water to cool the plant body, and by removing the heat of vaporization from the plant body. The main purpose is to lower the ambient temperature. However, the technique of the present embodiment is effective even for the purpose of spraying medicine. The apparatus for generating mist is configured such that mist is generated directly above or obliquely above the plant body, and reaches the plant body when the mist falls by gravity. The particle size of the mist is set to 10 μm or more and 100 μm or less. When a mist having a particle size in this range is used, the possibility of reaching the plant body without disappearing due to evaporation after the generation of the mist increases.

  By the way, if the plant body is fruit and vegetables such as tomatoes and cucumbers, the fruit may break if the ambient humidity is excessive or excessive moisture adheres to the surface of the plant body. The spatula may be transformed into a cork shape. That is, the plant body may cause physiological disorders due to excessive moisture. In this embodiment, since the particle diameter of the mist is set in the above range, even if the mist adheres to the plant body, it evaporates in a relatively short time. Therefore, while mist contributes to cooling of a plant body, possibility that a physiological disorder will arise in a plant body by mist is reduced.

  In the embodiment described below, the case where the plant body is a tomato and the tomato is cultivated in an agricultural field provided in an agricultural house will be described as an example. However, tomato is an example, and as described above, the technique of the present embodiment can be applied to various plants. Moreover, although this embodiment demonstrates soil culture cultivation as an example, the technique of this embodiment is applicable even if it is hydroponics cultivation.

  As shown in FIG. 1, the plant body 10 is planted in a field 30. FIG. 1 shows only two plant bodies 10 that are individually tailored, but as shown in FIG. 2, a large number of plant bodies 10 are actually planted side by side in the field 30. In the agricultural field 30 shown in FIG. 2, a plurality of ridges 31 that are raised from other parts are formed. A passage 32 is formed between adjacent ridges 31. The passage 32 provides a space for movement and work for the worker.

  In the example shown in FIG. 2, double row planting is used in which two rows of plants 10 are planted in the basket 31. That is, a plurality of plant bodies 10 that are tailored to one plant are planted in two rows on one basket 31. In each row, adjacent plant bodies 10 are arranged at a predetermined interval according to the type of plant body 10. For example, in the case of a large tomato, the interval between the plant bodies 10 is determined in a range of approximately 40 cm to 60 cm.

  By the way, as shown in FIG. 3, the agricultural house 20 surrounding the agricultural field 30 includes a frame 21 configured by combining metal pipes as a structural material, and a covering material 22 supported by the frame 21. The covering material 22 may be glass, but in this embodiment, a synthetic resin film having translucency (desirably transparent) is used.

  The agricultural house 20 includes a roof part 200 having a semicircular cross section, a pair of side wall parts 201 that support the roof part 200 and face each other, and a pair of end wall parts 203 that are orthogonal to the side wall part 201 and face each other. Prepare for. Therefore, the agricultural house 20 is formed in an inverted U shape in a cross section orthogonal to the direction connecting the end wall portions 203. The dimension in the direction connecting the pair of end wall parts 203 is designed to be sufficiently larger than the direction connecting the pair of side wall parts 201. Hereinafter, the direction connecting the pair of end wall portions 203 is referred to as a longitudinal direction, and the direction connecting the pair of side wall portions 201 is referred to as a short direction. The longitudinal direction of the eaves 31 is along the longitudinal direction of the agricultural house 20, and a plurality of eaves 31 are formed in the short direction of the agricultural house 20.

  The agricultural house 20 includes a curtain 23 and a window 24. The curtain 23 is movable between a first position where external light incident on the interior is reduced and a second position where external light incident on the interior is not attenuated. Further, the window 24 is movable between an open position that allows ventilation between the inside and the outside and a closed position that does not allow ventilation between the inside and the outside.

  Furthermore, the agricultural house 20 includes a roof curtain 230 disposed along the roof portion 200 and two side curtains 231 disposed along each of the two side wall portions 201 as the curtain 23. The roof curtain 230 adjusts the amount of incident external light from the roof portion 200 by moving between the first position and the second position. The side curtain 231 adjusts the amount of incident external light from each of the two side wall portions 201 by moving between the first position and the second position. The roof curtain 230 and the side curtain 231 are driven independently by a driving device. The driving device includes a power source such as a motor, and includes driving mechanisms respectively corresponding to the roof curtain 230 and the side curtain 231.

  The window 24 is provided in each side wall part 201. The window 24 adjusts the ventilation resistance of air when ventilating between the inside and the outside of the agricultural house 20 by adjusting the opening degree. It is desirable that the agricultural house 20 includes a window on the end wall 203 in addition to the side wall 201. The windows 24 of the two side wall portions 201 are independently driven by a driving device. The driving device includes a power source such as a motor, and includes driving mechanisms corresponding to the windows 24.

  If the position of the curtain 23 and the opening degree of the window 24 are appropriately adjusted, the internal temperature and internal humidity of the agricultural house 20 can be changed. For example, if the roof curtain 230 and the side curtain 231 are closed and the opening of the window 24 is increased during a sunny day in the summer, an increase in the internal temperature of the agricultural house 20 is suppressed.

  A fan 25 is disposed in the upper part of the wife wall 203 of the agricultural house 20, and an entrance is provided in the lower part. The fan 25 ventilates the agricultural house 20 by mechanical ventilation, and contributes to the adjustment of the internal temperature and internal humidity of the agricultural house 20. The fan 25 forms an air current in the agricultural house 20 during operation. As described above, by controlling the operation of the equipment such as the curtain 23, the window 24, and the fan 25, the internal environment of the agricultural house 20 is controlled, and an environment for growing the plant body 10 can be prepared.

  As shown in FIG. 4, the agricultural house 20 is a device that sprays water on the plant body 10 in addition to the curtain 23, the window 24, and the fan 25 in order to control the environment for growing the plant body 10. It is equipped with various devices such as a device for spraying. The agricultural house 20 is provided with a sensor 61 that monitors various information such as temperature, humidity, moisture content in the soil, and illuminance. That is, the sensor 61 monitors the internal environment of the agricultural house 20. The internal environment monitored by the sensor 61 includes the temperature, humidity, illuminance, and the like of the plant body 10. The sensors 61 for monitoring the internal environment are preferably provided at a plurality of locations of the agricultural house 20 but may be provided at only one location.

  In the device for preparing the internal environment of the agricultural house 20, the control device 60 determines the operating state based on the internal environment of the agricultural house 20 monitored by the sensor 61. That is, the control device 60 controls various devices such as the curtain 23, the window 24, the fan 25, the water spraying device, and the mist spraying device based on the internal environment of the agricultural house 20 monitored by the sensor 61. The relationship between the internal environment monitored by the sensor 61 and the operation of various devices is determined according to the type of the plant body 10, the growth stage of the plant body 10, the season, and the like.

  The control device 60 can select manual operation or automatic operation, and performs automatic operation of various devices when automatic operation is selected. Further, the control device 60 has a built-in timer 62, and the timer 62 is configured such that an operation period and a stop period can be set as a schedule. When the automatic operation is selected, the control device 60 controls the operation of various devices according to the internal environment monitored by the sensor 61 during the operation period set in the timer 62.

  The agricultural house 20 having the above-described configuration is an example, and is not intended to limit the configuration of the agricultural house 20, and does not prevent the agricultural house 20 from using other materials or being formed into other shapes.

  Below, the apparatus which spreads mist mainly is demonstrated. As shown in FIG. 1, the agricultural house 20 is provided with a mist generating device 40 and a tilting device 50 for spraying mist on the plant body 10. The mist generating device 40 is configured to generate mist above the plant body 10 and to spray the plant body 10 with mist that falls due to gravity. Moreover, the inclination apparatus 50 is attached to the top part in the ground part 11 of the plant body 10, and is comprised so that the inclination angle of the ground part 11 may be changed.

  The mist generating device 40 includes a water pipe 41, a nozzle 42, a pump 43, and a tank 44 (see FIG. 4). The water conduit 41 is attached to the agricultural house 20 so as to be disposed above the farm field 30 (see FIG. 2). In the present embodiment, the water pipe 41 is arranged along the longitudinal direction of the agricultural house 20, but it is also possible to arrange it along the short direction of the agricultural house 20.

  A plurality of nozzles 42 are connected to an intermediate portion in the longitudinal direction of the water flow pipe 41. Each of the plurality of nozzles 42 includes four spray ports so as to blow mist in four directions. In the example shown in FIG. 1, the spray ports are provided at substantially equal angular intervals in a plane along the ground. The nozzle 42 may have another configuration, for example, a configuration including two spray ports so as to blow mist in opposite directions within a plane along the ground.

  In the present embodiment, as shown in FIG. 5, the nozzle 42 is surrounded by four plant bodies 10 adjacent to each other by one ridge 31 and is disposed above the vicinity of the center line along the longitudinal direction of the ridge 31. It is. That is, the nozzle 42 is arranged above the center of a quadrangle having the roots of the four plant bodies 10 as vertices. Moreover, as shown in FIG. 5, the nozzle 42 is arrange | positioned so that the direction (it shows with a broken line) which blows off mist from four spraying holes respond | corresponds to the four plant bodies 10 on a one-to-one basis. The height from the upper surface of the straw 31 to the nozzle 42 varies depending on the height of the plant body 10 when harvesting the fruit, but may be about 100 cm to 200 cm.

  In the present embodiment, the nozzle 42 is disposed above the ridge 31, but the nozzle 42 may be disposed above the passage 32 between two adjacent ridges 31. The arrangement of the plant body 10 and the nozzle 42 and the relationship between the plant body 10 and the direction of the spray port are the same as in the case where the nozzle 42 is arranged above the basket 31.

  The water conduit 41 is connected to the pump 43. The pump 43 supplies water stored in the tank 44 to the water pipe 41. When the water pressurized by the pump 43 is supplied to the water pipe 41, mist blows out from the nozzle 42. The mist blown out from the nozzle 42 falls by gravity and is sprayed on the plant body 10. Therefore, the temperature of the site where the mist is attached in the plant body 10 is lowered, and the plant body 10 can be cooled.

  By the way, this embodiment is provided with not only the mist generating device 40 but also a tilting device 50 as a device for spraying mist. As shown in FIG. 1, the tilting device 50 includes a fastener 51 attached to a part of the above-ground part 11 of the plant body 10, a moving device 52 attached to the agricultural house 20, and a fastener 51 attached to the moving device 52. And a coupling member 53 to be coupled.

  The fastener 51 is selected from a clip-shaped member that sandwiches a part of the plant body 10, a tape-shaped member that is wound around a part of the plant body 10, and the like. The tilting device 50 can change the tilt angle of the above-ground part 11 of the plant body 10 by applying an external force to the fastener 51. In this embodiment, since the single plant body 10 is assumed, the inclination angle of the above-ground part 11 of the plant body 10 is the inclination angle of the main axis in the above-ground part 11 of the plant body 10. The main axis here represents a line connecting the base and the top of the plant body 10 in the above-ground part 11, and is generally along the stem of the plant body 10.

  The inclination angle is expressed as an angle with respect to the vertical direction. In general, as shown in FIG. 1A, the inclination angle is almost 0 degrees in a state where the plant body 10 is self-supporting. By applying an external force to the fastener 51, the inclination angle is as shown in FIG. 1B. Becomes larger and the above-ground part 11 of the plant body 10 is inclined. Since the ground part 11 of the plant body 10 has elasticity, if the external force is removed, the inclination angle of the ground part 11 of the plant body 10 returns to the inclination angle when the plant body 10 is independent.

  In this embodiment, the moving device 52 assumes a configuration using a configuration including a guide rail, a moving element, and a drive mechanism. The mover has a rod shape extending in the longitudinal direction of the eaves 31 and is guided by a guide rail fixed at a fixed position with respect to the agricultural house 20 and reciprocates linearly. That is, the guide rail regulates the moving range of the moving element. The drive mechanism includes a conversion mechanism such as a rack and pinion that converts the rotational force of the motor into a straight force, and a moving element is coupled to the conversion mechanism. Note that the moving device 52 may be configured not to include a drive mechanism, and may be configured to manually move the moving element.

  The coupling member 53 is, for example, a string-like member, and connects the fastener 51 to the mover of the moving device 52. Therefore, the fastener 51 moves as the mover of the moving device 52 moves. The coupling member 53 is desirably a material that does not easily corrode even when wet with water. For example, a synthetic fiber is used.

  By the way, when the plant body 10 is tilted by moving the top of the plant body 10 by the tilting device 50, the relative position of the plant body 10 where the fastener 51 is attached decreases as the tilt angle of the plant body 10 increases. . Therefore, it is desirable that the guide rail is curved so as to match the height position of the fastener 51, or that the fastener 51 or the coupling member 53 has elasticity.

  If the inclination angle of the plant body 10 is relatively large, the area in which the relatively lower leaf is covered under the upper leaf is reduced. Therefore, when the tilting device 50 is operated so that the inclination angle of the ground part 11 of the plant body 10 becomes relatively large when the mist is sprayed on the plant body 10, not only the relatively upper leaf but also the lower side. Mist is also sprayed on the leaves that are on the side. That is, an increase in the area where the mist is sprayed in the plant body 10 can be expected.

  As described above, in the present embodiment, the ground portion 11 of the plant body 10 is inclined at the timing when the mist is sprayed on the plant body 10. In order to incline the above-ground part 11 of the plant body 10 according to spraying of mist, the control apparatus 60 which controls operation | movement with the mist generating apparatus 40 and the inclination apparatus 50 is provided.

  The control device 60 includes a computer including a processor that executes a program as a main hardware element. The processor is selected from a microcomputer having a memory integrally or a CPU (Central Processing Unit) having a memory separately. The control device 60 may be a dedicated device instead of a general-purpose computer. Further, the program is written in advance in a ROM (Read Only Memory) provided in the computer, or is provided in a recording medium such as an optical disk or an external memory, and is written in a rewritable nonvolatile memory. Alternatively, the program may be provided through an electric communication line such as an Internet line instead of a recording medium.

  By the way, as above-mentioned, 2 row planting is employ | adopted in this embodiment. Therefore, the plant bodies 10 are arranged in two rows in the basket 31 and are arranged at a predetermined interval in the longitudinal direction of the basket 31. Therefore, not only the upper leaf relatively overlaps the lower leaf in one plant body 10, but also the upper leaf relatively overlaps the lower leaf in adjacent strains. There is. In particular, as the plant body 10 grows, the leaves of adjacent plant bodies 10 are more likely to overlap.

  For this reason, when the above-ground part 11 of the plant body 10 is tilted, the two plant strains 10 adjacent to each other are tilted in a direction in which the distance of the other part becomes larger than the distance between the base parts of the main shaft. Therefore, for example, the direction shown in FIG. In FIG. 6, the solid line represents the position of the plant body 10 that is not inclined, and the alternate long and short dash line represents the position of the plant body 10 that is inclined. Moreover, the arrow in FIG. 6 represents the direction which the plant body 10 moves to the state inclined from the state which is not inclined. In FIG. 6, the broken line connected to the nozzle 42 represents mist. Moreover, the example shown to FIG. 6A shows the case where it is set as the direction which mutually makes a top part separate in the direction which connects the plant bodies 10 of two adjacent strains, and the example shown to FIG. 6B is the direction which connects the plant bodies 10 of two adjacent strains. Indicates a case where the apexes are moved in different directions in the intersecting direction.

  For example, when the two plant bodies 10 arranged in the width direction of the ridge 31 are inclined so that the top portions are separated from each other in the direction connecting the strains as in the example of FIG. Is larger than the distance between the bases. For this reason, the area of the two plants 10 that overlaps the top and bottom of the leaves of the plant body 10 is reduced, and as a result, the area of the leaf that receives the mist falling from above is increased. That is, compared with the case where the plant body 10 is not inclined, the ratio of the amount of mist sprayed on the leaves of the plant body 10 with respect to the amount of mist sprayed from the nozzle 42 disposed above the basket 31. Can be increased. Inclining the plant body 10 as in this example can be performed simultaneously for all the plant bodies 10 of one cocoon 31.

  By the way, the two plant bodies 10 arranged in the longitudinal direction of the cocoon 31 can be similarly inclined. That is, with respect to the two plant bodies 10 arranged in the longitudinal direction of the cocoon 31, the main axes of the two plant bodies 10 can be inclined by separating the tops of the plant bodies 10 from each other in the direction connecting the strains. In this case, in the plurality of plant bodies 10 arranged in the longitudinal direction of the cocoon 31, a plant body 10 whose top portions are separated from each other and a plant body 10 whose top portions are close to each other are generated. That is, when one plant body 10 is tilted in the longitudinal direction of the cocoon 31, the top of the plant body 10 is one of the two plant plants 10 adjacent to the plant body 10 in the longitudinal direction of the cocoon 31. For the other and closer to the other.

  Here, in this embodiment, as described above, the nozzle 42 of the mist generating device 40 includes four spray ports so as to spray mist toward the four plant bodies 10. Therefore, among the four plant bodies 10 to which the mist from the nozzle 42 is sprayed, when the two plant bodies 10 arranged in the longitudinal direction of the ridge 31 are inclined in directions in which the tops are separated from each other, There is less overlap of leaves at the mist. That is, even if the plant body 10 is inclined so that the top of the plant body 10 is moved in the longitudinal direction of the ridge 31, it is possible to increase the proportion of mist that reaches the plant body 10.

  By the way, with respect to the two plant bodies 10 arranged in the longitudinal direction or the width direction of the cocoon 31, the tops of the two plant bodies 10 are different from each other in a direction crossing the direction connecting the strains as in the example of FIG. 6B. The plant body 10 may be inclined so as to be moved. In the example shown in FIG. 6B, the plant body 10 is single-row planted, and two plant plants 10 aligned in the longitudinal direction of the cocoon 31 are inclined in opposite directions in the width direction of the cocoon 31. In this case, the nozzle 42 may be configured to spray mist in two directions.

  In the case of the example shown in FIG. 6B, since the distance between the tops of the main axes of the two plant bodies 10 is larger than the distance between the base parts, the area of the two plant plants 10 that overlap vertically is reduced. As a result, the area of the leaf that receives the mist falling from above increases. That is, compared with the case where the plant body 10 is not inclined, the ratio of the amount of mist sprayed on the leaves of the plant body 10 with respect to the amount of mist sprayed from the nozzle 42 disposed above the basket 31. Can be increased.

  As described above, in the present embodiment, the ground portion 11 of the plant body 10 is inclined at the timing of spraying mist. Therefore, compared with the case where the plant body 10 is not inclined, the overlap of leaves is reduced, and as a result, the area in which the plant body 10 receives mist increases. Therefore, when the mist is used for cooling the plant body 10, it is possible to enhance the cooling effect. When the mist is used for spraying the drug on the plant body 10, the amount of the drug applied to the plant body 10 can be increased. It is possible to increase the ratio of the amount of adhesion to the plant body 10.

  Here, in the state where the above-ground part 11 of the plant body 10 is inclined, light is introduced into a site between two adjacent plant bodies 10, thereby contributing to photosynthesis. That is, compared with the case where the plant body 10 is not inclined, the incident amount of sunlight in the plant body 10 where the incident amount of sunlight is usually small increases. As a result, if the frequency of mist generation increases, the amount of light irradiated to the plant body increases, contributing to the growth promotion of the plant body 10.

  By the way, in the case of two-row planting, when the plant body 10 is inclined by applying an external force to the plant body 10 such that the tops of the two plant bodies 10 arranged in the width direction of the ridge 31 are separated from each other. When the plant body 10 is inclined, the plant body 10 blocks a part of the passage 32. However, if the external force applied to the plant body 10 is removed, the plant body 10 returns to its original position due to the elasticity of the plant body 10, so when the plant body 10 is temporarily tilted, Does not affect the workability in

  By the way, in the configuration example described above, the single plant body 10 is tailored and two-row planting is adopted. However, as shown in FIG. 7, two plant bodies 10 may be tailored. In the example shown in FIG. 7, single row planting is adopted for the two plant bodies 10 that are tailored. In the case of two tailoring, as shown in FIG. 7A, there are two stems at the top of the plant body 10, and the two main axes corresponding to the two stems at the top of the plant body 10 are inclined. Therefore, there is less overlap between the upper leaves and the lower leaves compared to the single plant body 10. Even in this case, as shown in FIG. 7B, the tilting device 50 tilts the plant body 10 so as to increase the distance between the tops of the two main axes of the plant body 10, thereby overlapping the leaves connected to the respective stems. Less. That is, as shown in FIG. 7B, when the distance between the tops of the two main axes of the plant body 10 is increased, the ratio of the amount of mist received by the plant body 10 to the amount of mist sprayed from the nozzle 42 increases. .

  As is clear from the example shown in FIG. 7, even when the above-ground part 11 of the plant body 10 is attracted to grow in an inclined state, the inclination of the above-ground part 11 of the plant body 10 using the tilting device 50. When the angle is changed, the overlapping of the leaves of the plant body 10 may be reduced. When the overlap of the leaves of the plant body 10 is reduced, the ratio of the amount of mist that reaches the plant body 10 can be increased with respect to the amount of mist sprayed by the mist generating device 40. That is, the effect of cooling the plant body 10 or the effect of the drug on the plant body 10 is expected to increase.

  By the way, as shown in FIG. 8, depending on the plant body 10, the plant body 10 may be supported by the support member 54 at the time of cultivation. The support member 54 is selected from a lattice, a net, and the like, but in the example shown in FIG. 8, a deformable net is used as the support member 54. Here, the deformable net is a net formed of a thin string of synthetic fiber or natural fiber, or a net formed of a synthetic resin in a shape similar to such a net. It means having. In addition, although a support | pillar or a wire etc. can be selected as the supporting member 54, in this embodiment, it is assumed that a lattice or a net is used.

  When the support member 54 is used, a case where a part of the plant body 10 is coupled to the support member 54 with a tape-like or clip-shaped fastener, and a case where a part of the plant body 10 is coupled so as to be entangled with the support member 54 There is. For example, if the plant body 10 is vine, the plant body 10 is supported by the support member 54 by entwining a part of the plant body 10 with the support member 54. Further, even if the plant body 10 is not necessarily a climbing plant body 10, if the plant body 10 is attracted to the support member 54, the plant body 10 often entangles with the support member 54 as the plant body 10 grows.

  When this type of support member 54 is used, the support member 54 can be used in place of the fastener 51 in the tilting device 50. The fastener 51 needs to be attached to each of the plurality of plant bodies 10, and the coupling member 53 needs to be joined to the fastener 51 attached to each plant body 10. In some cases, it is also necessary to adjust the position of the fastener 51 in accordance with the growth of the plant body 10. On the other hand, if the support member 54 is used, it is possible to support the several plant body 10 collectively. Therefore, when this type of support member 54 is used, the work of attaching the tilting device 50 to the plant body 10 becomes easy. Further, since the support member 54 is a net or a lattice, the plant body 10 becomes entangled with the support member 54 as it grows, so that it is possible to omit position adjustment like the fastener 51.

  If the support member 54 is a net or a lattice, a plurality of locations of the plant body 10 are coupled to the support member 54. Therefore, when the plant body 10 is inclined by applying an external force to the support member 54, the plant body 10 On the other hand, the possibility of external force acting locally is reduced. Therefore, even if the frequency | count which inclines the plant body 10 increases, possibility that the plant body 10 will be damaged is reduced. In particular, when the support member 54 is a deformable net, the number of contact points with respect to the plant body 10 increases, so that the effect of dispersing the external force acting on the plant body 10 is enhanced.

  The support member 54 preferably has light reflectivity. That is, the surface of the support member 54 is desirably white or has a metallic luster. By using the support member 54 having light reflectivity, light (particularly sunlight) irradiated on the support member 54 without being irradiated on the leaves of the plant body 10 is reflected on the surface of the support member 54, and the reflected light A part is irradiated to the plant body 10. Therefore, compared with the case where the support member 54 with low light reflectivity is used, the area irradiated with light on the leaves of the plant body 10 may be expanded, and as a result, it contributes to the photosynthesis of the plant body 10. The wavelength range reflected by the support member 54 may be the entire wavelength range of sunlight, but it is desirable to use the support member 54 having a high reflectance particularly in the red and blue wavelength ranges.

(Operation)
As described above, in the present embodiment, the plant body 10 is configured such that the tilt angle of the main axis of the plant body 10 is relatively large using the tilting device 50 at the timing of spraying mist from the mist generating device 40. The top of the main shaft is moved. The control device 60 controls the operation timing of the mist generating device 40 and the tilting device 50.

  The control device 60 acquires information on the internal environment of the agricultural house 20 monitored by the sensor 61 at relatively short time intervals, and when the output of the sensor 61 satisfies a predetermined condition, the control device 60 causes the mist generating device 40 and the tilting device 50 to Give instructions. Here, it is assumed that three types of information of temperature, humidity, and illuminance are used as information on the internal environment of the agricultural house 20. The time interval at which the control device 60 acquires information on the internal environment from the sensor 61 can be appropriately determined according to the type of the plant body 10, the scale of the agricultural house 20, and the like. This time interval is selected from a time of about 1 second to 10 minutes, for example.

  The tilting device 50 includes a position sensor such as a limit switch in order to detect that the tilt angle of the plant body 10 has reached the reference value. That is, when the coupling member 53 moves to a predetermined position by the moving device 52 provided in the tilting device 50, the output of the position sensor changes (for example, from off to on), and the plant body 10 is in a tilted state. The control device 60 recognizes it.

  Here, the plant body 10 is double-row planted, and when the tilting device 50 tilts the plant body 10 as shown in FIG. 6A, the tops of the two plant bodies 10 aligned in the width direction of the cocoon 31 are trapped. The case where it moves to the mutually opposite direction in the width direction of 31 is assumed. In this case, when the part to which the coupling member 53 is attached moves to the moving device 52 and moves from the position where the plant body 10 is self-supporting to a predetermined position, the output of the position sensor changes.

  The predetermined position here is, for example, a position separated from the position just below the nozzle 42 by a distance of about half the width direction of the flange 31. In a state where the plant body 10 is self-supporting, the part where the coupling member 53 is attached to the moving device 52 is separated from the position just below the nozzle 42 by about a quarter of the width direction of the rod 31. Therefore, it is only necessary that the position sensor is adjusted so that the output changes when the portion where the coupling member 53 is attached to the moving device 52 is further moved by a distance of about a quarter in the width direction of the flange 31. The position where the output of the position sensor changes is an example, and this position can be determined as appropriate.

  When the automatic operation is selected, the control device 60 operates various devices during the operation period set in the timer 62 using the three types of information monitored by the sensor 61: temperature, humidity, and illuminance. As described above, the devices controlled by the control device 60 are the curtain 23, the window 24, the fan 25, the device for spraying water, the device for spraying mist, and the like. The control device 60 takes in information on the internal environment monitored by the sensor 61 even when various devices are operating, and determines whether the temperature, humidity, and illuminance are within appropriate ranges. If any one of the information of temperature, humidity, and illuminance deviates from the appropriate range, various devices are controlled so that the corresponding information is within the appropriate range.

  Further, the control device 60 activates the mist generating device 40 when the information monitored by the sensor 61 satisfies the condition for generating mist and the output of the position sensor has changed. That is, when the temperature monitored by the sensor 61 is equal to or higher than the upper limit of the appropriate range and the position sensor detects that the plant body 10 is tilted, the operation of the pump 43 of the mist generator 40 is started. The mist is generated from the nozzle 42. By this operation, it becomes possible to spray mist on the plant body 10 at the timing when the plant body 10 is inclined.

  When the mist generator 40 is activated, the controller 60 continues to operate the pump 43 for a predetermined spraying time. The spraying time may be determined as a fixed time, but can be determined based on the internal environment monitored by the sensor 61, and can be determined based on the date and time counted by the timer 62. When the spraying time elapses after the spraying of the mist on the plant body 10, the control device 60 forms an air flow inside the agricultural house 20 by operating the fan 25. By this air flow, vaporization of mist adhering to the plant body 10 is promoted, and cooling of the plant body 10 is promoted.

  As described above, the mist spraying method of the present embodiment includes the step of spraying the mist sprayed on the plant body 10 and the step of inclining the above-ground portion 11 of the plant body 10 at least at the timing of spraying the mist. .

  According to this method, since the entire ground portion 11 of the plant body 10 is inclined at the timing of spraying the mist, not only the vicinity of the top portion of the plant body 10 but also the side surface portion and the lower portion of the plant body 10 are misted. To reach. That is, it becomes possible to disperse the mist over a wide range of the plant body 10, and it is possible to attach the mist to a place where the mist is usually difficult to adhere in the plant body 10.

  In the mist spraying method of the present embodiment, when there are a plurality of plant bodies 10, in the step of tilting the above-ground part 11 of the plant body 10, it is desirable to tilt the plant body 10 as follows. That is, two adjacent plant bodies 10 out of a plurality of plant bodies 10 are above the two plant bodies 10 in the direction in which the tops of the plant bodies 10 are separated from each other in the direction connecting the two plant bodies 10. It is desirable to incline the part 11. Alternatively, two adjacent plant bodies 10 out of a plurality of plant bodies 10 are such that the tops of the plant bodies 10 move in directions opposite to each other in a direction intersecting the direction connecting the two plant bodies 10. It is desirable to incline the above-ground part 11 of the plant body 10 of 2 strains.

  By the method mentioned above, it becomes easy to reach mist between the adjacent plant bodies 10, and mist is normally spread | diffused also to the location where distribution of mist is difficult.

  In the step of tilting the ground part 11 of the plant body 10, the ground part 11 of the plant body 10 can be tilted by moving the fastener 51 coupled to a part of the ground part 11 of the plant body 10. is there.

  In this method, by connecting the fastener 51 to the plant body 10, an external force is applied to the ground portion 11 of the plant body 10 via the fastener 51, so the degree of freedom of the direction of the external force applied to the plant body 10 is increased. high. In other words, it is possible to freely determine the direction in which the ground part 11 of the plant body 10 is inclined.

  Further, in the step of inclining the ground part 11 of the plant body 10, the ground part 11 of the plant body 10 may be inclined by inclining the support member 54 that supports the ground part 11 of the plant body 10.

  In this method, the support member 54 is preferably a net or a lattice. When the plant body 10 is supported by a net or a lattice and an external force is applied to the support member 54 to incline the plant body 10, the external force is not concentrated locally on the plant body 10. That is, damage to the plant body 10 caused by applying an external force is suppressed.

  The support member 54 desirably has light reflectivity. If the support member 54 is a net or a lattice and is white or has a metallic luster, the light is reflected from the surface of the support member 54, so that a part of the light irradiated to the support member 54 is plant. The body 10 is irradiated. Therefore, the light quantity irradiated to the plant body 10 increases, and the support member 54 contributes to photosynthesis.

  The above-described embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and various modifications can be made according to design and the like as long as the technical idea according to the present invention is not deviated from this embodiment. Of course, it can be changed.

DESCRIPTION OF SYMBOLS 10 Plant 11 Above-ground part 51 Fastener 54 Support member

Claims (6)

Spraying mist to be sprayed on the plant body;
The method of spraying mist on the plant body includes the step of inclining the above-ground part of the plant body at least at the timing of spraying the mist. The plant body has a plurality of strains,
In the step of inclining the above-ground part of the plant body, two adjacent plant bodies among the plurality of plant bodies are arranged such that the top parts of the plant bodies are separated from each other in a direction connecting the two plant plants. The method for spraying mist on the plant body according to claim 1, wherein the ground part of the plant body of the two strains is inclined. The plant body has a plurality of strains,
In the step of inclining the above-ground part of the plant body, two adjacent plant bodies among the plurality of plant bodies are arranged in a direction intersecting a direction connecting the two plant plants. The method for spraying mist onto plants according to claim 1, wherein the above-ground portions of the plants of the two strains are inclined so that the tops move in opposite directions. The step of inclining the aerial part of the plant body causes the aerial part of the plant body to be inclined by moving a fastener coupled to a part of the aerial part of the plant body. The mist spraying method to the plant body of 1 item | term. The plant according to any one of claims 1 to 3, wherein in the step of inclining the above-ground part of the plant body, the above-mentioned part of the plant body is inclined by inclining a support member that supports the above-ground part of the plant body. How to spread mist on the body. The method for spraying mist on a plant body according to claim 5, wherein the support member has light reflectivity.

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