Cultivation facilities for shade-loving or semi-shade-loving plants

Abstract

To provide a facility and a method for the cultivation of a shade or semi-shade plant that can irradiate a medium culturing a shade or semi-shade plant with sunlight even in a simple and inexpensive structure and can further control the irradiation time and irradiance of the sunlight.SOLUTION: A facility for the cultivation of a shade or semi-shade plant includes a medium for culturing a shade or semi-shade plant, and a roof covering the top of the medium. The roof includes north-south openings extending or scattered in the north-south direction, which are provided at predetermined intervals in the east-west direction. The north-south openings each include a transparent or translucent daylighting panel.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a facility for cultivating shade-loving or semi-shade-loving plants, and in particular to an agricultural greenhouse for cultivating such plants, which is a cultivation facility for shade-loving or semi-shade-loving plants equipped with a lighting structure that is optimal for cultivating such plants. [Background technology]

[0002] Panax ginseng (also known as Korean ginseng or Korean ginseng), a plant of the Araliaceae family that belongs to the genus Panax, has been used medicinally since ancient times, and today is widely used as a pharmaceutical ingredient, health food, food, etc. Panax ginseng will wither if exposed to sunlight for a long period of time, and therefore, ginseng cultivation areas are generally provided with sunshade roofs to protect the ginseng from direct sunlight. Known examples of this type of sunshade roof include those made of thatch or rice straw.

[0003] In addition, cultivation systems for ginseng have also been proposed in the past. For example, Patent Document 1 (Publication No. 2013-108620) proposes a plant cultivation system that suppresses growth variations among shade plants or semi-shade plants cultivated in the same cultivation area, the plant cultivation system comprising solar panels and support members that support the solar panels, and a cultivation area for shade plants or semi-shade plants formed below the solar panels.

[0004] Furthermore, although not limited to the use of ginseng cultivation, techniques relating to lighting structures for agricultural greenhouses have also been proposed. For example, Patent Document 2 (JP 2020-174558 A) proposes a lighting structure for an agricultural greenhouse, which has a greenhouse body whose side surfaces facing north-south, gable surfaces facing east-west, and roof surface are each covered with translucent materials, and inside the greenhouse body, multiple cultivation beds are arranged in a row in the north-south direction along the east-west direction. A lighting curtain that can move back and forth in the north-south direction is provided on the outside of the greenhouse body along the side surfaces and roof surface. The lighting curtain basically has light-blocking properties, and only the part corresponding to the roof surface has slit-shaped translucent sections that run along the east-west direction, and the number of slit-shaped translucent sections is aligned in the north-south direction corresponding to the number of cultivation beds. A long mirror that runs along the east-west direction inside the greenhouse body is rotatable around an axis of rotation that runs along the east-west direction, and the position of the translucent section on the roof surface of the lighting curtain and the angle of the mirror are controlled so that sunlight entering through the translucent section is reflected by the mirror and directed toward the cultivation beds. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Re-tabled publication No. 2013-108620 [Patent Document 2] Japanese Patent Publication No. 2020-174558 Summary of the Invention [Problem to be solved by the invention]

[0006] The plant cultivation system described in Patent Document 1 reduces variation in plant growth by creating a cultivation area for shade plants or semi-shade plants below the solar panels, but since sunlight does not directly irradiate the plants, it cannot be ruled out that bacteria such as mold may grow, and as a result, it is possible that the plants will not grow healthily.

[0007] Therefore, one of the objectives of the present invention is to provide a cultivation facility and cultivation method for shade or semi-shade plants that can irradiate sunlight onto the culture medium in which shade or semi-shade plants are grown in order to suppress the growth of mold, etc., and that can further control the exposure time and amount of sunlight.

[0008] The lighting structure for the agricultural greenhouse described in Patent Document 2 has lighting curtains on the outside of the greenhouse body that can move back and forth in the north-south direction along the sides and roof surface, and slit-shaped light-transmitting sections that run along the east-west direction only in the area corresponding to the roof surface, aligned in the north-south direction in the number corresponding to the number of cultivation beds. However, inside the greenhouse body, long mirrors that run along the east-west direction are installed at positions corresponding to the light-transmitting sections and are rotatable around a rotation axis that also runs along the east-west direction, so that sunlight entering through the light-transmitting sections is reflected by the mirror and directed toward the cultivation beds, making the long mirrors essential for irradiating sunlight.

[0009] Therefore, another object of the present invention is to provide a cultivation facility and cultivation method for shade or semi-shade plants that is easily and inexpensively constructed, can irradiate sunlight onto the culture medium in which shade or semi-shade plants are grown, and can further control the irradiation time and amount of sunlight. [Means for solving the problem]

[0010] In order to solve at least one of the above problems, the present invention provides a cultivation facility for shaded or semi-shade plants that controls the area irradiated with sunlight according to the movement of the sun and controls the irradiation time depending on the size of the irradiated area.

[0011] In other words, the facility for cultivating shade or semi-shade plants according to the present invention comprises a culture medium for cultivating shade or semi-shade plants and a roof covering the top of the culture medium, and the roof has north-south openings extending in the north-south direction or scattered thereon at predetermined intervals in the east-west direction, and the north-south openings are provided with transparent or semi-transparent lighting panels.

[0012] In such a cultivation facility, it is desirable that the culture medium for cultivating the shaded or semi-shade plants be formed so that it has a width equal to the length of the area irradiated with sunlight taken in through the opening (i.e., the length of the north-south opening) and extends in the north-south direction, which is the direction of movement of the sun.

[0013] In the cultivation facility, it is also desirable that the sunlight transmittance of the lighting panels can be adjusted as desired, and lighting panels with the desired transmittance can be formed so that they are interchangeable, or multiple lighting panels can be formed so that they can be stacked.

[0014] In the cultivation facility, it is desirable that the north-south openings have their opening widths adjusted in the north-south direction according to the hours of sunlight for the plants growing in the culture medium, that the installation intervals in the east-west direction be adjusted according to the hours of sunlight, and that the intervals between the culture medium and the north-south openings be adjusted according to the hours of sunlight.In addition, since the angle of sunlight changes with the seasons, it is also desirable to make the length and position of the north-south openings adjustable, or to provide a position adjustment unit that can arbitrarily adjust the relative position (height and / or horizontal) between the roof and the culture medium.

[0015] In addition, in the cultivation facility, it is desirable to provide the north-south openings with at least one of an opening width adjustment unit that adjusts the opening width in the north-south direction, a light transmittance adjustment unit that changes the light transmittance of the lighting panel installed in the opening, and an opening spacing adjustment unit that adjusts the spacing between the openings in the east-west direction.

[0016] In addition, in order to control the amount and / or range of sunlight irradiated onto the culture medium in the cultivation facility, the roof may be provided with a plurality of north-south openings extending in the north-south direction or scattered in the east-west direction, and any of the openings may be selectively shaded. The openings may be shaded by covering the outside or inside of the openings with boards or sheets, or by providing curtains, blinds, etc.

[0017] In addition, in the cultivation facility, the culture medium is arranged in multiple levels in the vertical direction, and the roof portion is provided with east-west openings extending or scattered in the east-west direction, and it is also desirable to arrange the east-west openings so that direct sunlight entering through the east-west openings irradiates areas other than the culture medium.

[0018] Furthermore, in a multi-tiered cultivation facility in which multiple culture media are arranged in the vertical direction, a material with high light reflectivity can be provided in the area irradiated with sunlight from the east-west opening so that light can be irradiated to culture media other than the topmost layer. For example, if sunlight entering through the east-west opening irradiates a passageway, a sheet with high light reflectivity, such as white, can be installed in the passageway. Furthermore, in the multi-tiered cultivation facility, a light source can be provided to irradiate culture media other than the topmost layer. Such a light source can be a light fixture such as an incandescent lamp, fluorescent lamp, or LED.

[0019] In addition, the height of at least one of the culture medium and the roof can be adjusted freely. By adjusting the height of the culture medium or the roof, the relative distance between them can be adjusted, and thereby the area irradiated with sunlight from the north-south opening and the east-west opening can be adjusted.

[0020] It is also desirable that the roof be sloped to avoid the risk of rain leaks, etc. The slope of the roof can be adjusted appropriately depending on the required area of ​​the culture medium, the presence or absence of snow, etc.

[0021] In addition, it is desirable to provide an exterior wall or waterproof sheet around the culture medium in the cultivation facility to prevent rainwater from seeping in. In particular, by using a light-blocking material for the exterior wall or waterproof sheet, it becomes easier to control the amount of light in the cultivation environment for shade-loving or semi-shade-loving plants.

[0022] In order to solve at least one of the above problems, the present invention provides a method for cultivating shade or semi-shade plants, in which shade or semi-shade plants grown in a culture medium are directly irradiated with sunlight that has passed through a transparent or semi-transparent lighting panel, and the daily irradiation dose of the plants is set to 100 lx or more and 500 lx or less. [Effects of the Invention]

[0023] The cultivation facility for shade or semi-shade plants of the present invention has north-south openings on the roof that extend or are scattered in the north-south direction, spaced at a predetermined interval in the east-west direction. Therefore, sunlight taken in through the north-south openings can be irradiated onto the culture medium. The irradiated area of ​​sunlight taken in through the north-south openings is strip-shaped or scattered, and moves north-south in accordance with the movement of the sun. Therefore, by forming the culture medium for cultivating the shade or semi-shade plants so that it has the same width as the length of the irradiated area of ​​sunlight taken in through the openings (i.e., the length of the north-south openings) and extends in the north-south direction, which is the direction of movement of the sun, the irradiated area of ​​sunlight can be moved along the length of the culture medium. The exposure time of the plants planted in the culture medium can be adjusted by adjusting the opening width of the north-south openings.

[0024] Therefore, the present invention provides a cultivation facility and cultivation method for shade or semi-shade plants that can control the exposure time and amount of sunlight to the culture medium in which shade or semi-shade plants are grown, without requiring equipment such as mirrors.

[0025] Furthermore, transparent or translucent lighting panels are installed in the north and south openings, so the amount of light passing through the openings can be controlled by the transmittance of the lighting panels, and the lighting panels can also be used to prevent rainwater from entering.

[0026] In particular, the north-south openings have their opening width adjusted in the north-south direction according to the hours of sunlight for the plants grown in the culture medium, and their installation spacing in the east-west direction adjusted according to the hours of sunlight.The spacing between the culture medium and the north-south openings can also be adjusted according to the hours of sunlight, thereby optimizing the amount of sunlight irradiated on the plants according to the season.

[0027] Furthermore, in a multi-tiered cultivation facility in which multiple culture media are arranged vertically, the roof can be provided with east-west openings extending in the east-west direction or scattered throughout, allowing direct sunlight entering through the east-west openings to irradiate areas other than the culture media. In a multi-tiered cultivation facility configured in this manner, reflected sunlight entering through the east-west openings can be supplied to culture media located below the top tier. Therefore, even in a multi-tiered cultivation facility, plants grown in culture media on each tier can be grown in an optimal environment. [Brief explanation of the drawings]

[0028] [Figure 1] 1 is a perspective view showing a cultivation facility according to a first embodiment; [Figure 2] Plan view of the cultivation facility according to the first embodiment [Figure 3] A vertical cross section from east to west showing the sunlight irradiation status of the culture medium [Figure 4] A longitudinal cross section of the north-south direction showing the sunlight irradiating the culture medium [Figure 5] A longitudinal cross-sectional view of the main part in the north-south direction showing the illumination from the north and south openings based on the angle of sunlight. [Figure 6] FIG. 10 is a plan view showing a cultivation facility according to another embodiment. [Figure 7] FIG. 10 is an exploded perspective view showing a cultivation facility according to still another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0029] Hereinafter, a cultivation facility 10 for shade or semi-shade plants according to this embodiment and a cultivation method using the same will be specifically described with reference to the drawings. In particular, the cultivation facility 10 according to this embodiment is a cultivation facility 10 suitable for cultivating ginseng as a shade or semi-shade plant.

[0030] Fig. 1 is a perspective view showing a cultivation facility 10 according to a first embodiment, and Fig. 2 is a plan view of the cultivation facility 10. The cultivation facility 10 shown in this embodiment is a multi-tiered cultivation facility 10 in which culture media 30 for growing ginseng are arranged in two tiers in the height direction, and the two tiers of culture media 30 are arranged in multiple rows extending in the north-south direction, with passages provided between each row for cultivation management.

[0031] Support columns 40 are provided around the culture medium 30, and these support columns 40 support the roof portion 20. The support columns 40 need only support the roof portion 20 and the culture medium 30, and can be made of metal pipes or wood. The roof portion 20, supported by the support columns 40, is sloped to prevent rainwater from dripping onto the culture medium 30. However, the slope of the roof portion 20 can be adjusted as desired depending on the roofing material, whether it is waterproofed, and whether there is snow accumulation. In addition to components provided as building materials, materials not commonly used as roofing materials in general buildings, such as plywood, can also be used as roofing materials. This is because the roof portion 20 only needs to block sunlight and function as a rain shelter except for the openings described below.

[0032] The roof portion 20 has a plurality of north-south openings 21 extending in the north-south direction and extending in the east-west direction. The north-south openings 21 are formed in the shape of a rectangle elongated in the north-south direction, but are not necessarily limited to this shape and may be formed in a curved strip or ellipse. Furthermore, the north-south openings 21 can be formed to be wider or narrower at any position. For example, the north-south openings 21 can be formed so that the opening width near the center in the length direction is wider or narrower.

[0033] The north-south openings 21 may exist as holes opening into the roof portion 20, and may be formed not only by forming openings in the roof portion but also as gaps between the plates that make up the roof portion 20. In particular, when the north-south openings 21 are formed as gaps between the plates that make up the roof portion 20, the roofing materials that make up the roof portion 20 may be fixed apart by the distance of the north-south openings 21. Furthermore, the north-south openings 21 may be formed as openings extending in the north-south direction, or may be formed as small-diameter openings arranged in the north-south direction, or may be formed as scattered openings. In other words, the openings may be formed in any shape appropriate for the plants to be cultivated as long as they can irradiate sunlight onto a predetermined area.

[0034] The roof portion 20 is provided with an east-west opening 22 extending in the east-west direction. This east-west opening 22 is formed so that sunlight passing through it is irradiated onto passageways or the like present between the culture media 30. As long as the east-west opening 22 is able to transmit sunlight, it can be formed in a strip shape or in various other shapes, such as scattered openings. In particular, sunlight entering through the east-west opening 22 can be reflected onto passageways or the like, allowing it to irradiate the culture media 30 below the topmost level (the first level of culture media 30).

[0035] The north-south opening 21 and the east-west opening 22 are each provided with a daylighting panel 23 that can transmit sunlight. The daylighting panel 23 may be a transparent or translucent plate or sheet, and the light transmittance may be adjusted to any desired value. Furthermore, the daylighting panel 23 may be detachably attached to each of the openings 21 and 22, and daylighting panels 23 with different light transmittances may be installed depending on the season. In particular, since the cultivation facility 10 in this embodiment is a ginseng cultivation facility 10, it is desirable to use a resin plate with a light transmittance of approximately 50% to 70%. Furthermore, the light transmittance of the daylighting panel 23 installed in the north-south opening 21 may be different from that of the east-west opening 22. For example, the daylighting panel 23 installed in the east-west opening 22 may have a high or low light transmittance. Furthermore, the light transmittance of the daylighting panel 23 installed in the north-south opening 21 may be different depending on the installation area. For example, the lighting panel 23 installed in a certain area has a high light transmittance, and slow-growing or overgrown ginseng can be planted in the area irradiated with sunlight that has passed through the lighting panel 23.

[0036] Furthermore, the culture medium 30 for cultivating ginseng as a shade or semi-shade plant is formed so as to extend in the east-west direction with a width that is irradiated by the band of sunlight that shines through the north-south openings 21. In addition to planting ginseng directly on the culture medium 30 with culture soil spread over it, ginseng may also be planted in a cultivation container 31 such as a planter. In particular, the use of a cultivation container can prevent problems such as growth disorders caused by pests and continuous crop damage caused by disease bacteria and harmful nematodes.

[0037] FIG. 2 is a plan view of a cultivation facility 10 according to a first embodiment. In particular, in the cultivation facility 10 shown in this figure, the light transmittance of the daylighting panels 23 that close the north-south openings 21 is different between the north and south sides. That is, the daylighting panels 23 installed in the opening on the north side that guides sunlight to the culture medium 30 have a lower light transmittance than the daylighting panels 23 installed in the opening on the south side that guides sunlight to the culture medium 30. By combining and using daylighting panels 23 with different light transmittances in this way, different growing environments can be created for each area, thereby controlling the growth conditions of plants. It is also desirable to provide light transmittance adjusting members 50, such as blinds, lace curtains, or colored films, on the daylighting panels 23 installed in the openings to adjust the light transmittance as desired.

[0038] Figure 3 is a vertical cross-sectional view taken in the east-west direction, showing how sunlight is irradiated onto the culture medium 30. As shown in this figure, sunlight entering through each of the north and south openings 21 irradiates the culture medium 30 located beneath the roof portion 20. At this time, the area irradiated by sunlight is the horizontal projection shape of the north and south openings 21, which in this embodiment is a rectangular band extending in the north-south direction. This band-shaped sunlight-irradiated area moves from west to east as the sun moves from east to west. Therefore, by adjusting the installation spacing of the north and south openings 21 and the distance between the roof portion 20 and the culture medium 30, sunlight can be irradiated onto the entire culture medium.

[0039] Furthermore, because sunlight is irradiated onto the culture medium 30 only while it is within the band-shaped sunlight irradiation region, the width (east-west width) of the north-south opening 21 can control the sunlight irradiation time for a specific region of the culture medium 30. In other words, increasing the width of the north-south opening 21 can increase the sunlight irradiation time, while decreasing the width of the north-south opening 21 can decrease the sunlight irradiation time. Therefore, it is desirable to provide the north-south opening 21 with an opening width adjustment unit that adjusts the opening width in the north-south direction and an opening spacing adjustment unit that adjusts the spacing between the openings in the east-west direction. The opening width adjustment unit can be configured to change the opening width of the opening using a shielding member 60 such as a plate or shielding sheet. The opening spacing adjustment unit can selectively block multiple north-south openings 21 or can form an expandable area between the north-south openings in the roof.

[0040] FIG. 4 is a longitudinal cross-sectional view in the north-south direction showing the state of sunlight irradiating the culture medium 30. The north-south opening 21 is adjusted in length to match the north-south width of the culture medium 30 and is formed as a rectangular strip that matches the north-south opening 21 so that sunlight irradiates the culture medium 30. In particular, when configured as a multi-tiered cultivation facility 10 as shown in FIG. 4, sunlight entering through the north-south opening 21 can irradiate the culture medium 30 on the upper tier, but does not reach the culture medium 30 on the lower tier. Therefore, an east-west opening 22 extending in the east-west direction can be provided, and the light irradiated from there can be reflected by an aisle or the like so that sunlight can also reach the culture medium 30 on the lower tier. Therefore, to effectively reflect sunlight that enters through the east-west opening 22, it is desirable to provide a highly reflective material, such as a white sheet, or a scattering reflective material that scatters and reflects the irradiated light on the irradiated surface.

[0041] However, since the height of the sun changes with the seasons, the angle of irradiation from the north-south openings 21 also changes with the seasons. Therefore, it is desirable to be able to change the opening length (north-south length) of the north-south openings 21 and to be able to arbitrarily adjust the relative positional relationship between the culture medium 30 and the north-south openings 21.

[0042] Figure 5 is a longitudinal cross-sectional view of a key portion in the north-south direction, illustrating the illumination from the north-south opening 21 based on the solar radiation angle. Figure 5(A) shows the illumination when the solar radiation angle is large, i.e., the solar radiation angle Θ1 is 78.4° at the summer solstice, while Figure 5(B) shows the illumination when the solar radiation angle is small, i.e., the solar radiation angle Θ2 is 31.6° at the winter solstice. As shown in Figure 5, the illumination range of sunlight entering through the north-south opening 21 varies depending on the solar radiation angle. Therefore, a retractable shading member 60, such as a blind, is provided at the north-south opening 21. The shading member 60 can be configured to extend in a direction that blocks the north-south opening 21 to limit the illumination area when the solar radiation angle is small. Instead of providing the shading member 60, the inclination angle of the roof portion 20 can also be adjusted. That is, when the solar radiation angle is small, the inclination of the roof material can be reduced to a nearly flat slope.

[0043] Since the irradiated area shifts depending on the irradiation angle of the sunlight, it is also desirable to configure the system so that the relative positional relationship between the culture medium 30 and the north-south openings 21 can be adjusted as desired. In this embodiment, casters are provided to allow the culture medium 30 to be slidably moved, but this can also be achieved by moving the planter 31 in which the ginseng is planted. Furthermore, the relative positional relationship between the culture medium 30 and the north-south openings 21 can be adjusted by sliding the roof portion 20 in the north-south direction, or by configuring the roof portion 20 to be movable.

[0044] As shown in Figure 5, by making the opening length (north-south length) of the north-south openings 21 changeable and / or by making the relative positional relationship between the culture medium 30 and the north-south openings 21 adjustable as desired, even if the sunlight irradiation angle changes depending on the season or installation area, it is possible to ensure the optimal sunlight irradiation time and irradiation area according to the irradiation angle.

[0045] FIG. 6 is a plan view showing a cultivation facility 10 according to another embodiment. In this embodiment, the north-south openings 21 formed in the roofing material are not arranged for each culture medium extending in the east-west direction, but are formed to extend the entire length of the cultivation facility 10. The east-west openings 22 are also formed to intersect with the north-south openings 21. Only the necessary areas of the north-south openings 21 are open to allow sunlight to pass through. A light transmittance adjusting member 50 with low light transmittance or light-blocking properties for adjusting the amount of light can be laminated on any of the north-south openings 21. In particular, when growing ginseng, lighting panels 23 are provided at each north-south opening 21 to prevent rainwater from entering. Therefore, it is desirable to laminate the light transmittance adjusting member 50 on the outside or inside of the lighting panels 23. By providing the light transmittance adjusting member 50, any of the north-south openings 21 can be blocked, thereby adjusting the spacing between the north-south openings 21. Therefore, even if the sunlight exposure time changes depending on the season, the sunlight exposure area can be adjusted accordingly.

[0046] FIG. 7 is an exploded perspective view showing a cultivation facility 10 according to yet another embodiment. In this embodiment, the roof 20 is composed of roofing materials 70 and the daylighting panels 23, and the north and south openings are provided between the roofing materials 70. The roofing materials 70 can be made of a material that can at least block sunlight and prevent rainwater from entering. As mentioned above, the daylighting panels 23 can be made of transparent or translucent resin plates or sheets. However, since ginseng requires a cultivation period of three years or more, it is desirable to use weather-resistant materials. Furthermore, although the shielding members 60 and daylighting panels 23 are alternately arranged in this embodiment, this arrangement is not necessarily required. Depending on the angle and duration of sunlight irradiation, the roofing materials 70 can be arranged adjacent to each other, or the daylighting panels 23 can be arranged adjacent to each other. Furthermore, in a cultivation facility 10 equipped with a roofing material 70 and the lighting panel 23 in this manner, the roofing material 70 and the lighting panel 23 can be changed to any width or light transmittance depending on the exposure time and angle of sunlight. [Industrial Applicability]

[0047] The cultivation facility for shade or semi-shade plants of the present invention can be used as a cultivation facility for shade or semi-shade plants such as ginseng, etc. It can also be used as a cultivation facility for other plants to control the exposure time and area of ​​sunlight. [Explanation of symbols]

[0048] 10 Cultivation Facility 20 Roof 21 North-south opening 22 East-west opening 23 Lighting panel 30 Culture Medium 31 Cultivation container 40 pillars 50 Light transmittance adjusting member 60 Shielding member 70 Roofing Materials

Claims

1. A facility for cultivating shade or semi-shade plants, It consists of a medium for cultivating shade or semi-shade plants and a roof part covering the top of the medium, The roof has north-south openings extending in the north-south direction or scattered therein at predetermined intervals in the east-west direction, The north and south openings are equipped with transparent or semi-transparent lighting panels, A cultivation facility for shade or semi-shade plants, characterized in that the opening width or installation interval of the north-south openings, or the interval between the culture medium and the north-south openings, is adjusted according to the hours of sunlight for the plants planted in the culture medium.

2. The north and south openings include: an opening width adjustment unit for adjusting the opening width in the north-south direction; a light transmittance adjusting unit that changes the light transmittance of a daylighting panel provided in the opening; and The cultivation facility according to claim 1 , further comprising at least one opening spacing adjustment unit that adjusts the spacing between the openings in the east-west direction.

3. A plurality of the culture media are provided in the height direction, The roof portion is provided with east-west openings extending in the east-west direction or scattered therein, The cultivation facility according to claim 1 or 2, wherein direct sunlight entering through the east-west openings irradiates areas other than the culture medium.

4. The culture medium is provided in a plurality in the height direction, A cultivation facility as described in any one of claims 1 to 3, wherein a material with high light reflectivity is provided in the area irradiated with sunlight from the east-west openings.

5. A method for cultivating shade or semi-shade plants, comprising: Directly irradiate the shaded or semi-shaded plants planted in the medium with sunlight that has passed through transparent or semi-transparent lighting panels installed in the north-south openings of the roof covering the top of the medium, A method for cultivating shade or semi-shade plants, characterized in that the daily irradiation dose to the plants is set to 100 lx or more and 500 lx or less by adjusting the opening width or installation interval of the openings, or the interval between the culture medium and the north and south openings.

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