Plant cultivation system and method using bumblebees

Abstract

To provide a plant cultivation system and a plant cultivation method that enable efficient pollination while maintaining a proper growth environment for plants.SOLUTION: A plant cultivation system using bumblebees is provided, the system including cultivation shelves that can cultivate plants, a growth light source, for growing the plants, and a pollination guidance light source for guiding the bumblebees to the plants of the cultivation shelves. The pollination guidance light source is disposed so as to irradiate the plants of the cultivation shelves with ultraviolet rays. The pollination guidance light source is disposed between the cultivation shelves.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a plant cultivation system and a plant cultivation method that utilize bumblebees. [Background technology]

[0002] Conventionally, in the cultivation of plants in plant factories and the like, agricultural films that block ultraviolet rays contained in sunlight have been used to prevent the proliferation of pathogenic bacteria and mold within the plant factory (for example, Patent Document 1). Also, in plant factories, a method has been used in which honeybees are used to mediate pollen distribution through pollen (for example, Patent Document 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-205847 [Patent Document 2] Japanese Patent Application Laid-Open No. 2013-226132 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in an environment where ultraviolet rays are blocked using the agricultural film of Patent Document 1, there is a lack of ultraviolet rays necessary for pollinating insect activity, which may prevent the pollinating insects from flying. Also, in the method of Patent Document 2, a light source that irradiates plants with near-ultraviolet rays is provided to enable honeybees to pollinate in an environment where ultraviolet rays are blocked, but such a light source that irradiates near-ultraviolet rays may make it difficult for certain plants to grow.

[0005] Therefore, an object of the present invention is to provide a plant cultivation system and a plant cultivation method that enable efficient pollination while maintaining an appropriate growing environment for plants. [Means for solving the problem]

[0006] In order to achieve the above-mentioned objectives, the plant cultivation system of the present invention is a plant cultivation system that utilizes bumblebees, and is characterized in that it comprises a cultivation shelf on which plants can be cultivated, a cultivation light source for cultivating the plants, and a pollination induction light source for guiding the bumblebees to the plants on the cultivation shelf, and the pollination induction light source is positioned to irradiate ultraviolet light toward the plants on the cultivation shelf.

[0007] In the plant cultivation system according to the present invention, it is preferable that a plurality of the cultivation shelves are arranged, and the pollen guide light sources are arranged between the plurality of cultivation shelves.

[0008] In this case, it is preferable that a plurality of the pollen-guiding light sources are arranged along the passage between the plurality of cultivation shelves.

[0009] In the plant cultivation system of the present invention, the cultivation shelf is provided with a cultivation bed in which plants can be cultivated, and the cultivation bed has a storage section that opens upward and an inclined section that slopes outward in the width direction and downward in the vertical direction from at least one side wall of the storage section, and it is preferable that the multiple cultivation shelves are arranged so that the inclined sections of the cultivation beds face each other.

[0010] In the plant cultivation system according to the present invention, the pollen-guiding light source is preferably installed on the ceiling of the plant factory.

[0011] In the plant cultivation system according to the present invention, it is preferable that the pollen-guiding light source is configured to be capable of irradiating ultraviolet light with a wavelength of 340 nm to 400 nm.

[0012] In the plant cultivation system according to the present invention, the pollen-guiding light source is preferably a fluorescent lamp.

[0013] The plant cultivation method of the present invention is a plant cultivation method for cultivating plants using bumblebees in a plant factory, characterized in that cultivation light is irradiated from a cultivation light source for cultivating plants toward the plants on the cultivation shelves, and ultraviolet light is irradiated from a pollination induction light source for guiding the bumblebees to the plants toward the plants on the cultivation shelves. [Effects of the Invention]

[0014] According to the present invention, it is possible to provide a plant cultivation system and a plant cultivation method that enable efficient pollination while maintaining an appropriate growing environment for plants. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a perspective view schematically illustrating a plant cultivation system according to an embodiment of the present invention. [Figure 2] FIG. 1 is a layout diagram of a cultivation shelf and a light source for pollen induction according to the present embodiment. [Figure 3] 1 is a front view schematically showing a plant cultivation system according to an embodiment of the present invention. [Figure 4] 1 is a side view schematically illustrating a plant cultivation system according to an embodiment of the present invention. [Figure 5] FIG. 2 is a cross-sectional view schematically illustrating a cross section of a cultivation bed. [Figure 6] FIG. 2 is a cross-sectional view schematically illustrating a cross section of a cultivation bed. [Figure 7] FIG. 2 is a side view schematically showing a cultivation bed of the cultivation shelf. [Figure 8] FIG. 1 shows a specific example of a bumblebee's flight path. DETAILED DESCRIPTION OF THE INVENTION

[0016] Next, preferred embodiments of the plant cultivation device according to the present invention will be described with reference to the drawings. Note that the following embodiments do not limit the invention according to each claim, and not all combinations of features described in the embodiments are necessarily essential to the solution of the invention. Furthermore, the drawings are schematic diagrams in which emphasis, omission, and proportion adjustments have been made as appropriate to illustrate the present invention, and may differ from the actual shape, positional relationship, and proportions.

[0017] As shown in FIGS. 1 to 4, the plant cultivation system 1 according to this embodiment includes a cultivation shelf 10 on which plants 3 can be cultivated, a cultivation light source 20 for cultivating the plants 3, and a pollination guidance light source 30 for guiding bumblebees to the plants 3 on the cultivation shelf 10. Examples of the plants 3 to be cultivated include strawberries, tomatoes, cherry tomatoes, melons, watermelons, etc., but the present invention is not limited to these, and various plants can be cultivated. Examples of the cultivation method include, but are not limited to, soil cultivation and hydroponic cultivation, and various cultivation methods can be used.

[0018] Bumblebee hives 5 (see FIG. 2) are provided within the plant factory 100, and the temperature is adjusted to a level suitable for the plants 3 being cultivated. During pollination by bumblebees, the temperature is adjusted to, for example, 18 to 25°C. Examples of bumblebee species include, but are not limited to, the European bumblebee and the black bumblebee, and various types of bumblebee can be used. The number of bumblebees in one plant factory 100 is preferably around several tens to several hundreds.

[0019] [Cultivation shelf] As shown in Figures 3 and 4, the cultivation shelves 10 are configured to be able to cultivate plants 3. Specifically, each cultivation shelf 10 is formed in the shape of a table having a rectangular top surface 10a and a plurality of legs 10b extending downward from the top surface 10a. As shown in Figures 3 and 4, the cultivation shelves 10 are provided with a plurality of tiers in the height direction of the cultivation shelf 10 (Z direction in Figures 3 and 4). A cultivation bed 12 capable of cultivating plants 3 is placed on each tier of the cultivation shelf 10. In this embodiment, the heights of the tiers are the same, but this is not limited thereto and the heights may differ from tier to tier.

[0020] As shown in FIG. 2 , a plurality of cultivation shelves 10 are arranged at predetermined intervals in the plant factory 100. Specifically, according to this embodiment, three cultivation shelves 10 are arranged at predetermined intervals along the depth direction of the cultivation shelves 10 (Y direction in FIG. 2 ), and four cultivation shelves 10 are arranged at intervals of two along the length direction of the cultivation shelves 10 (X direction in FIG. 2 ), for a total of 12 cultivation shelves 10 arranged in the plant factory 100. By arranging the cultivation shelves 10 at predetermined intervals in this manner, aisles 11 are formed between the plurality of cultivation shelves 10. Also, aisles 11 are formed between the peripheral walls of the plant factory 100 and the cultivation shelves 10. The aisles 11 are wide enough for bumblebees to fly and return to their nests, and are wide enough for light emitted from a pollination guidance light source 30 (described later) to reach the plants 3 arranged on the lowest shelf. The number of cultivation shelves 10 is not limited to the example shown in the figure and can be arbitrarily changed depending on the size of the plant factory 100, etc.

[0021] As shown in Fig. 5, the cultivation bed 12 is configured to be able to cultivate a plant 3. Specifically, the cultivation bed 12 includes a storage section 14 having an approximately U-shaped cross section with an open top, an inclined section 16 that inclines outward in the width direction and downward in the vertical direction from one side wall 14c of the storage section 14, and a vertical wall section 18 that extends vertically along the other side wall 14b. In this embodiment, the cultivation bed 12 includes the inclined section 16 and the vertical wall section 18, but is not limited thereto, and the inclined sections 16 may be formed on both ends in the width direction.

[0022] As shown in Figures 3 and 4, the cultivation beds 12 are provided in multiple tiers in the height direction of the cultivation shelf 10 (Z direction in Figures 3 and 4), and also in multiple rows in the depth direction of the cultivation shelf 10 (Y direction in Figure 4). As shown in Figure 4, a total of eight cultivation beds 12 according to this embodiment are placed on each cultivation shelf 10, with four tiers in the height direction and two rows in the depth direction of the cultivation shelf 10. The number of cultivation beds 12 is not limited to the example shown in the figures, and can be changed as desired.

[0023] The cultivation bed 12 is formed by shaping a metal plate material by roll forming. Here, roll forming is a sheet metal processing method in which a flat material is shaped into a desired cross-sectional shape by using multiple sets of forming rolls. The cultivation bed 12 according to this embodiment is formed by such roll forming, so that a large cultivation bed 12 that is continuous without joints along the longitudinal direction can be formed, which has the advantage of extremely low risk of water leakage, etc. In this embodiment, the cultivation bed 12 has a long shape with a longitudinal length of, for example, about 3 m to 18 m and a lateral length of, for example, about 60 cm, but is not limited thereto, and the longitudinal and lateral lengths can be set arbitrarily.

[0024] Examples of metals used for the cultivation bed 12 include galvalume steel, stainless steel, aluminum, copper, iron, etc., and galvalume steel and stainless steel are particularly suitable, but are not limited to these. Furthermore, it is preferable that the cultivation bed 12 be subjected to various known coating treatments, such as corrosion prevention treatments, to prevent metal damage.

[0025] 5, the storage section 14 has a generally U-shaped cross section, and includes an elongated bottom surface 14a extending along the longitudinal direction and a pair of left and right side walls 14b, 14c extending upward from the entire area of ​​both side edges extending along the longitudinal direction of the bottom surface 14a. In this embodiment, one storage section 14 is provided.

[0026] As shown in Fig. 5, the bottom surface 14a is provided with a recess 15a that is recessed downward. The recess 15a is configured so that when the pot 4 is placed in the storage portion 14, a space is formed between the bottom surface of the pot 4 and the recess 15a. The provision of the recess 15a has the advantage of improving drainage.

[0027] As shown in FIG. 5, the pair of side walls 14b, 14c extend upward from the entire side edge of the bottom surface 14a. In this embodiment, the height of the side wall 14c on one side (the inclined portion 16 side) and the height of the side wall 14b on the other side (the vertical wall portion 18 side) are substantially the same. Here, the height of the side walls 14b, 14c of the storage section 14 refers to the height from the placement surface to the side walls 14b, 14c of the storage section 14. Note that the height of the side wall 14c on one side (the inclined portion 16 side) and the height of the side wall 14b on the other side (the vertical wall portion 18 side) are substantially the same, but this is not limiting, and the height of the side wall 14c on one side (the inclined portion 16 side) may be higher than the height of the side wall 14b on the other side (the vertical wall portion 18 side).

[0028] As shown in Fig. 5, the vertical wall portion 18 extends along the vertical direction of the other side wall 14b. Specifically, the upper end of the vertical wall portion 18 is connected to the other side wall 14b of each storage section 14 via a connecting portion 17. However, this is not limited thereto, and the upper end of the other side wall 14b and the upper end of the vertical wall portion 18 may be directly connected. In this embodiment, as shown in Fig. 6, the cultivation beds 12 are arranged symmetrically on the left and right sides of each cultivation shelf 10 so that the vertical wall portions 18 are in contact with each other. Having such vertical wall portions 18 has the advantage of being able to easily scale up as needed.

[0029] As shown in FIG. 5, the inclined portion 16 is configured to incline outward in the width direction and downward in the vertical direction from at least one side wall 14c of the storage section 14. Specifically, the upper end of the inclined portion 16 is connected to one side wall 14c of each storage section 14 via a connecting portion 17. However, this is not limited to this, and the upper end of one side wall 14c and the upper end of the inclined portion 16 may be directly connected. In this embodiment, as shown in FIG. 7, the multiple cultivation shelves 10 are arranged so that the inclined portions 16 of the cultivation beds 12 face each other. Specifically, the inclined portions 16 are arranged so that they face each other across the aisle 11 between the multiple cultivation shelves 10.

[0030] In this embodiment, the height of the inclined portion 16 is approximately the same as the height of the side walls 14b, 14c of the storage portion 14. Here, the height of the inclined portion 16 refers to the linear distance in the height direction from the placement surface to the upper end of the inclined portion 16. Furthermore, the inclined portion 16 is preferably a smooth surface over the entire length, but various configurations can be adopted, such as a curved surface that is convex upward or a curved surface that is concave downward.

[0031] The inclination angle θ of the inclined portion 16 (see FIG. 5) can be set arbitrarily within a range of 0° or more and less than 90°, and is preferably within a range of 5° to 60°, and more preferably within a range of 10° to 45°. Here, the inclination angle θ of the inclined portion 16 refers to the inclination angle θ of the inclined portion 16 relative to the horizontal direction when the cultivation bed 12 is placed on a horizontal surface. Setting the inclination angle θ at this angle prevents the stems and fruits of the plants 3 from drooping downward, makes it possible to support the stems and fruits of the plants 3, and has the advantage of making it easier for users to harvest.

[0032] The surface of the inclined portion 16 (the surface facing the plants 3 to be harvested) is preferably colored in a color (for example, a contrasting color) that makes the plants 3 to be harvested stand out, and for example, if the plants 3 to be harvested are red (strawberries, etc.), it is preferable to color the surface in a contrasting color, such as green or white. Such coloring makes it easier to visually recognize the plants 3 to be harvested, and also has the advantage of enabling increased accuracy in identifying the plants 3 to be harvested when, for example, an automatic harvesting robot or the like uses a camera to automatically harvest.

[0033] [Light source for growing] As shown in Figures 3 and 4, the growth light source 20 is configured to emit growth light for growing the plant 3. Specifically, the growth light source 20 is provided on the lower side of the top surface 10a of the cultivation shelf 10, and is configured to illuminate the cultivation bed 12 on the lower level. The growth light source 20 is preferably disposed at a distance from the lower surface of the cultivation bed 12 disposed above it so as to form a space between the light source and the lower surface. Furthermore, the growth light source 20 is preferably disposed at a distance from the upper surface of the plant 3 disposed below it so as to form a space between the light source and the upper surface of the plant 3.

[0034] The growth light source 20 may be any suitable lighting device as long as it is capable of emitting the growth light necessary for growing the plants 3. For example, various known lighting devices such as an LED lamp with multiple LEDs arranged in a straight line or a straight-tube fluorescent lamp can be used. The wavelength of the growth light source 20 can be set as desired, and the growth light source 20 is configured to emit growth light with a wavelength of, for example, 380 to 780 nm. The UV irradiance of the growth light source 20 can also be set as desired. This has the advantage of reducing stress on the plants 3 and enabling efficient growth. The growth light source 20 may be suspended from the top of each shelf of the cultivation shelf 10 according to the height of the plants 3. It is preferable that the growth light source 20 be configured to be switchable between on and off, and the on / off times can be adjusted.

[0035] [Light source for pollination guidance] As shown in FIGS. 3 and 4 , the pollination guidance light source 30 is configured to emit ultraviolet light to guide bumblebees to the plants 3 on the cultivation shelf 10. Specifically, the pollination guidance light source 30 is configured to emit ultraviolet light with a wavelength of 340 nm to 400 nm. In this embodiment, the pollination guidance light source 30 is a straight tube fluorescent lamp, and multiple lamps are arranged in a line. The wavelength of the pollination guidance light source 30 can be set arbitrarily as long as it is in the range of 340 nm to 400 nm. Furthermore, although the pollination guidance light source 30 is a fluorescent lamp, the present invention is not limited to this. For example, the pollination guidance light source 30 may be an LED that emits ultraviolet light, or any other lighting device that emits ultraviolet light, such as an organic electroluminescent (EL) lamp, or different types of light sources may be used in combination.

[0036] As shown in Figures 3 and 4, the pollination guidance light source 30 is arranged to irradiate ultraviolet light toward the plants 3 on the cultivation shelves 10. In this embodiment, the pollination guidance light source 30 is installed on the ceiling of the plant factory 100. In this case, the pollination guidance light source 30 can be used as an interior light. Note that some of the existing interior lights installed on the ceiling may also be used as the pollination guidance light source 30.

[0037] As shown in Fig. 2, multiple pollination guidance light sources 30 are arranged along the aisle 11 between multiple cultivation shelves 10. Specifically, the multiple arranged pollination guidance light sources 30 are arranged so as to irradiate ultraviolet light toward plants 3 on cultivation shelves 10 located near each pollination guidance light source 30. A total of 16 pollination guidance light sources 30 according to this embodiment are arranged in the plant factory 100, with four arranged at predetermined intervals along the longitudinal direction of the cultivation shelves 10 (X direction in Fig. 2) and four arranged at predetermined intervals along the depth direction of the cultivation shelves 10 (Y direction in Fig. 2).

[0038] As described above, the plant cultivation system 1 of this embodiment comprises a cultivation shelf 10 on which plants 3 can be cultivated, a cultivation light source 20 for cultivating the plants 3, and a pollination induction light source 30 for guiding bumblebees to the plants 3 on the cultivation shelf 10, and the pollination induction light source 30 is positioned to irradiate ultraviolet light toward the plants 3 on the cultivation shelf 10.

[0039] According to the plant cultivation system 1 of this embodiment, by irradiating ultraviolet light, bumblebees can be made to fly from the hive 5 and guided to the plants 3 via the passages 11 (see FIG. 8). The bumblebees that visit the flowers of the plants 3 can transfer pollen and pollinate the plants 3. Furthermore, since it is only necessary to irradiate the plants 3 with ultraviolet light from the pollination guidance light source 30, no special equipment is required, and capital investment costs can be reduced. Furthermore, since the cultivation light source 20 is provided separately from the pollination guidance light source 30, the plants 3 can be cultivated appropriately. This makes it possible to efficiently pollinate the plants 3 using bumblebees while maintaining an appropriate cultivation environment for the plants 3.

[0040] In addition, by arranging multiple cultivation shelves 10 and placing the pollination induction light sources 30 between each of the multiple cultivation shelves 10, ultraviolet rays can be irradiated onto more plants 3, allowing for efficient pollination and efficient cultivation of the plants 3.

[0041] Furthermore, since multiple pollination induction light sources 30 are arranged along the aisle 11 between multiple cultivation shelves 10, one pollination induction light source 30 can irradiate ultraviolet rays to the plants 3 on the cultivation shelves 10 on both sides of the aisle 11, making pollination even more efficient.

[0042] Furthermore, the cultivation shelf 10 includes a cultivation bed 12 capable of cultivating plants 3, and the cultivation bed 12 has a storage section 14 that opens upward and an inclined section 16 that slopes outward in the width direction and vertically downward from at least one side wall 14c of the storage section 14, and the multiple cultivation shelves 10 are arranged so that the inclined sections 16 of the cultivation beds 12 face each other. This makes it easier to irradiate plants 3 on the inclined sections 16 with ultraviolet light, allowing more plants 3 to be irradiated with ultraviolet light and efficient pollination. In particular, when cultivating strawberries, the flowers hang down near the inclined sections 16, making it easier for them to be irradiated with ultraviolet light.

[0043] By installing the pollen guide light source 30 on the ceiling of the plant factory 100, the wiring of the existing interior light installed on the ceiling can be used as is, thereby reducing the cost of capital investment. It can also be used as an interior light.

[0044] The pollination guidance light source 30 is configured to be able to emit ultraviolet light with a wavelength of 340 nm to 400 nm. Wavelengths in this range are able to induce bumblebees to fly and visit flowers.

[0045] Since the pollen guide light source 30 is a fluorescent lamp, there is no need to use a special lighting device for irradiating ultraviolet rays, which reduces the cost of capital investment.

[0046] The multiple pollination induction light sources 30 are arranged so as to irradiate ultraviolet rays toward the plants 3 on the cultivation shelves 10 located near each pollination induction light source 30, and each pollination induction light source 30 irradiates ultraviolet rays onto the plants 3 located nearby, allowing for efficient pollination and efficient cultivation of the plants 3.

[0047] [Variations] Although the preferred embodiments of the present invention have been described above, the technical scope of the present invention is not limited to the scope described in the above-described embodiments. Various modifications and improvements can be made to the above-described embodiments.

[0048] For example, in the above-described embodiment, the pollination guidance light source 30 is described as being installed on the ceiling of the plant factory 100, but this is not limiting, and a stand-type pollination guidance light source may be placed on the floor. Note that the pollination guidance light source 30 is preferably placed at a distance from the plants 3 to prevent heat from affecting the plants 3.

[0049] Furthermore, in the above-described embodiment, it has been described that one storage section 14 is provided, but this is not limiting, and two or more storage sections 14 may be provided. For example, when two or more storage sections 14 are provided, the cultivation bed 12 may have two storage sections 14 arranged along the width direction, and the cultivation bed 12 may have an inclined section 16 at each end in the width direction.

[0050] In the above-described embodiment, it has been described that multiple cultivation shelves 10 are arranged and the pollen guide light sources 30 are arranged between the multiple cultivation shelves 10, but this is not limited to this and various configurations can be adopted.

[0051] In the above-described embodiment, the pollination guidance light sources 30 are described as being arranged along the aisles 11 between the multiple cultivation shelves 10, but this is not limited to this and various configurations can be adopted.

[0052] In the above-described embodiment, the cultivation shelf 10 is provided with a cultivation bed 12 in which plants 3 can be cultivated, and the cultivation bed 12 has a storage section 14 that opens upward and an inclined section 16 that slopes outward in the width direction and vertically downward from at least one side wall 14c of the storage section 14, and the multiple cultivation shelves 10 are described as being arranged so that the inclined sections 16 of the cultivation beds 12 face each other, but this is not limited to this and various configurations can be adopted.

[0053] In the above-described embodiment, the pollen guidance light source 30 has been described as being configured to be able to emit ultraviolet light with a wavelength of 340 nm to 400 nm, but this is not limited to this, and various configurations can be adopted as long as the light source is capable of emitting ultraviolet light necessary for bumblebee activity.

[0054] It is clear from the claims that the above-mentioned modifications are included within the scope of the present invention. [Explanation of symbols]

[0055] 1: Plant cultivation system 3:Plant 4: Pot 5: Birdhouse 10:Cultivation shelf 10a:Top section 10b: Legs 11: Passage 12: Cultivation bed 14: Storage section 14a: bottom 14b: Side wall 14c: Side wall 15a: Recess 16: Inclined part 17:Connection part 18: Vertical wall section 20:Light source for cultivation 30:Light source for pollination guidance 100: Plant factory

Claims

1. A plant cultivation system using bumblebees, A cultivation shelf on which plants can be grown; a growing light source for growing plants; a light source for pollination guidance to guide bumblebees to the plants on the cultivation shelf; Equipped with The pollination guidance light source is an indoor light installed on the ceiling of the plant factory, The cultivation light source is provided on the lower side of the top surface of the cultivation shelf, The pollination guidance light source is arranged to irradiate ultraviolet light toward the plants on the cultivation shelf. A plant cultivation system characterized by:

2. The cultivation shelves are arranged in plurality, The pollen guide light sources are disposed between the plurality of cultivation shelves. The plant cultivation system according to claim 1 .

3. The plurality of pollen guide light sources are arranged along the passage between the plurality of cultivation shelves.

3. The plant cultivation system according to claim 2.

4. The cultivation shelf includes a cultivation bed capable of cultivating plants, The cultivation bed has a storage section that opens upward and an inclined section that inclines from at least one side wall of the storage section outward in the width direction and downward in the vertical direction, The plurality of cultivation shelves are arranged so that the inclined portions of the cultivation beds face each other.

4. The plant cultivation system according to claim 2 or 3.

5. The pollen-guiding light source is configured to be capable of irradiating ultraviolet light with a wavelength of 340 nm to 400 nm. The plant cultivation system according to any one of claims 1 to 4.

6. The light source for pollination guidance is a fluorescent lamp. The plant cultivation system according to any one of claims 1 to 5.

7. A plant cultivation method for cultivating plants using bumblebees in a plant factory, A light source for growing plants is irradiated onto the plants on the cultivation shelf with light for growing plants, UV light is irradiated onto the plants on the cultivation shelf from a pollination induction light source for guiding bumblebees to the plants; The pollination guidance light source is an indoor light installed on the ceiling of the plant factory, The cultivation light source is provided on the lower side of the top surface of the cultivation shelf. A plant cultivation method characterized by:

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