JP7429571B2 - How to grow strawberries - Google Patents

Description

The present invention relates to a method for cultivating strawberries in a plant factory using an artificial light source.

Conventionally, strawberries are cultivated by planting a child plant formed at the tip of a runner extending from a parent plant in a medium such as a pot or a planter (see Patent Document 1).

Furthermore, in recent years, the number of plant factories using artificial light sources has been increasing (see Patent Document 2). Plant factories grow plants in facilities where lighting, temperature, humidity, air, etc. are appropriately controlled, so it is expected that strawberry seedlings can be grown throughout the year without being affected by weather or pests. be done.

Strawberry cultivation in a plant factory is generally carried out by filling a bed with a medium and planting seedlings, similar to the raised cultivation performed in a greenhouse or the like.

Japanese Patent Application Publication No. 9-294478 International publication number WO2018/037577 publication

However, in the cultivation of strawberries in a plant factory, as in greenhouse cultivation, the grass vigor gradually decreases about nine months after planting, resulting in a reduction in strawberry yield. Therefore, in conventional greenhouse cultivation, seedlings are not planted for about three months until the next planting period due to pest outbreaks and rising temperatures after the harvest season, but in a plant factory, strawberry When the yield of strawberries decreases, it is possible to ensure a more stable yield of strawberries by discarding old seedlings and planting new ones. Therefore, in a plant factory, new strawberry seedlings must be grown at the same time during the harvest season, in addition to the strawberry seedlings that are being harvested. Therefore, work to raise new seedlings is required in parallel with harvest work, and whenever the yield decreases, it is necessary to replant old seedlings with new ones.

Therefore, an object of the present invention is to provide a method for cultivating strawberries in a plant factory that reduces the labor hours and labor costs involved in growing new seedlings and replanting.

[1] One aspect of the strawberry cultivation method according to the present invention is
A method for cultivating strawberries in a plant factory using an artificial light source,
To replant the seedlings, after the first harvest period from the start of strawberry harvest to the end of harvest due to yield reduction, remove the harvested seedlings from the pot and grow the crown until the growing point of the crown of the seedling is not buried. Replant the seedling in a pot so that it is buried in the medium ,
The seedlings are replanted twice every 8 to 10 months,
After the first harvesting period, there is a second harvesting period and a third harvesting period in which strawberries can be harvested with the seedlings replanted in between .

According to the present invention, it is possible to obtain at least two harvest seasons by using seedlings that were previously discarded after one harvest season, thereby reducing the labor time and labor costs involved in raising seedlings and replanting. be able to.

It is a schematic diagram explaining a plant factory. It is a figure explaining the schedule of the strawberry cultivation method concerning a 1st embodiment of the present invention. It is a figure explaining the strawberry cultivation method concerning a 1st embodiment. It is a figure explaining the strawberry cultivation method concerning a 2nd embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail using the drawings. Note that the embodiments described below do not unduly limit the content of the present invention described in the claims. Furthermore, not all of the configurations described below are essential components of the present invention.

One aspect of the strawberry cultivation method according to the present embodiment is a strawberry cultivation method in a plant factory that uses an artificial light source, in which seedlings are grown after a first harvest period from the start of strawberry harvest to the end of harvest due to a decrease in yield. The seedling is removed from the pot and transplanted into another pot so that the crown of the seedling is buried in the medium to the extent that the growing point of the crown is not buried.

Further, one aspect of the strawberry cultivation method according to the present embodiment is a strawberry cultivation method in a plant factory using an artificial light source, in which after the first harvest period from the start of strawberry harvest to the end of harvest due to yield reduction, For seedlings with crowns protruding from the medium in a pot, cultivating soil is added on top of the medium so that the crown is buried to the extent that the growing point of the crown is not buried.

1. First Embodiment A strawberry cultivation method according to a first embodiment will be explained using FIGS. 1 to 3. FIG. 1 is a schematic diagram illustrating a plant factory 10, FIG. 2 is a diagram illustrating a schedule for a strawberry cultivation method according to the first embodiment, and FIG. 3 is a diagram illustrating a strawberry cultivation method according to the first embodiment. This is a diagram. In FIG. 1, the plant factory 10 is shown in a longitudinal sectional view so that the inside of the plant factory 10 can be seen. Moreover, in FIGS. 3 and 4, the pot 20 is shown in a longitudinal cross-sectional view so that the inside of the pot 20 can be seen.

As shown in FIG. 1, a plant factory 10 that utilizes an artificial light source 12 used in a strawberry cultivation method includes a pot 20 placed on a cultivation shelf 14 installed inside. There is an artificial light source 12 above the pot 20 to promote photosynthesis of strawberry seedlings 30 cultivated within the pot 20.

The artificial light source 12 can employ, for example, an LED (Light Emitting Diode) element. Although not shown, the plant factory 10 includes an irrigation tube for supplying nutrients and moisture to the seedlings 30 inside. Moreover, the internal environment of the plant factory 10, such as temperature, humidity, and carbon dioxide, is controlled by equipment not shown.

The pot 20 is, for example, a container made of synthetic resin, and contains a culture medium 22 with adjusted components therein. An example will be described in which a pot 20 having one storage part is used in consideration of streamlining the replanting work, but it is also possible to plant one seedling 30 in each of a plurality of storage parts provided in one tray. good. A seedling 30 extends from the upper open end of the pot 20, and the lower part has a drainage hole (not shown). The pot 20 is, for example, in the shape of a thin sheet and circular in cross section, and may be a known container used for strawberry cultivation.

As shown in FIG. 2, the strawberry cultivation method according to the present embodiment includes a planting period T10, a first growing period S10, a first harvesting period S12, a first replanting period S14, a second growing period S20, and a second harvesting period S10. It consists of a period S22, a second replanting period S24, a third growing period S30, a third harvesting period S32, and a planting period T12.

At the planting time T10, for example, strawberry seedlings 30 are planted in pots 20 in September and placed on the cultivation shelves 14 of the plant factory 10. The seedlings 30 to be planted may be grown in a facility separate from the plant factory 10, or may be grown within the same plant factory 10. Although planting is started in September in FIG. 2, the planting time T10 is not limited to this, and the planting time T10 may be set depending on the growth status of the seedlings 30.
In the first growing period S10, care for the planted seedlings 30 and pollination after flowering are performed. Note that pollination continues during the harvest season.

The first harvest period S12 is a period from the start of strawberry harvest to the end of harvest due to a decrease in yield. The seedlings 30 planted in the pots 20 require, for example, about three months until strawberries can be harvested. The first harvest period S12 is about 5 to 6 months from the start of strawberry harvest until the strawberry yield decreases.

As shown in FIG. 3A, when the crown 32 of the seedling 30 extends and protrudes from the surface 24 of the medium 22, the yield of strawberries decreases. The timing of the end of harvest can be determined as appropriate depending on the decrease in strawberry yield. In the example of FIG. 2, the first harvest period S12 is set to 5 months, but the invention is not limited to this.

As a result of intensive research, the present inventors have found that the yield of strawberries can be recovered by reburying the grown crowns 32 into the soil.

In the first replanting period S14, as shown in FIG. 3(B), after the first harvesting period S12, the seedlings 30 are taken out from the pot 20, and as shown in FIG. 3(C), the seedlings 30 are The seedling 30 is replanted in the pot 20 so that the crown 32 is buried in the medium 22 to the extent that the growing point 34 of the crown 32 is not buried. Here, the pot 20 in which the seedling 30 after replanting is planted (pot 20 in (C) of FIG. 3) is the same as the pot 20 (pot 20 in (A) of FIG. 3) used before replanting. or a separate pot 20 may be used. Since the seedlings 30 are used as they are, it is possible to reduce labor hours and labor costs for preparing new seedlings 30.

Growth point 34 is present near the top of crown 32. The growing points 34 are also present in the axillary buds of the crown 32. After replanting, the second growing season S20 begins, in which the seedlings 30 grow from the growing point 34, and about three months later, the second harvesting season S22 begins. In the second growing season S20, the same operations as in the first growing season S10 are performed.

The second harvest period S22 is approximately 5 to 6 months from when strawberry harvest resumes until the strawberry yield decreases. When the second harvesting period S22 ends, the second replanting period S24 begins.

The seedlings 30 can be replanted twice every 8 to 10 months, for example. In this embodiment, after the first harvesting period S12 of 5 months, there is a second harvesting period S22 and a third harvesting period S32 (5 months each) in which strawberries can be harvested, with replanting of the seedlings 30 (1 month) in between. .

In the second replanting period S24, the same operations as in the first replanting period S14 are performed, as explained using FIGS. 3B and 3C. After replanting, the third growing season S30 occurs, and the seedlings 30 further grow from the growing point 34, and the third harvesting season S32 begins approximately three months later. In the third growing season S30, the same operations as in the second growing season S20 are performed.

The third harvest period S32 is approximately 5 to 6 months from when strawberry harvest resumes until the strawberry yield decreases. When the third harvest period S32 ends, the planting period T12 begins.

At the planting time T12, new seedlings 30 are planted in the pots 20. The seedlings 30 that have been harvested three times are discarded. Therefore, new seedlings 30 are grown in another pot 20 for several months before the planting time T12, and are prepared in time for the planting time T12.

In this way, the seedlings 30 that were previously discarded after one harvest period can be used for two or more harvest periods, reducing the labor time and labor costs involved in raising seedlings and replanting. I can do it.

2. Second Embodiment A strawberry cultivation method according to a second embodiment will be described using FIG. 4. FIG. 4 is a diagram illustrating a strawberry cultivation method according to the second embodiment.

The strawberry cultivation method according to the second embodiment includes a planting period, a first growing period, a first harvesting period, a soil addition period, a second growing period, a second harvesting period, and a planting period. FIG. 4 is a diagram illustrating the work during the soil addition period. The work other than the soil addition period is basically the same as the first embodiment, so redundant explanation will be omitted.

As shown in FIG. 4A, after the first harvesting period from the start of strawberry harvest to the end of harvest due to yield reduction, the strawberry seedlings 30 are in a state where the crown 32 protrudes from the medium 22 in the pot 20. Become. The pot 20 is filled with a culture medium 22 up to, for example, about two-thirds of its internal capacity, and a space is previously left above the surface 24 in which culture soil can be added. As shown in FIG. 4A, when the crown 32 of the seedling 30 protrudes significantly from the surface 24 of the medium 22, the yield of strawberries decreases.

As shown in FIG. 4B, during the soil addition period, for seedlings 30 whose crowns 32 protrude from the surface 24 of the culture medium 22, the crowns 32 are buried to the extent that the growing points 34 of the crowns 32 are not buried. The work of adding cultivating soil 26 on top of the culture medium 22 is performed. After replanting, the seedlings 30 grow from the growing point 34, and the second harvest period begins approximately three months later.

The pot 20 is preferably deeper than a pot generally used for strawberry cultivation, and may have a depth that allows the crown 32 to be backfilled with soil after the first harvest period.

In this way, by providing a period for adding soil, it is possible to harvest strawberries from one seedling 30 over two harvest periods, thereby reducing the labor time and labor costs involved in raising seedlings and replanting. .

The present invention is not limited to the embodiments described above, and various modifications are possible. or configurations with the same purpose and effect). Further, the present invention includes a configuration in which non-essential parts of the configuration described in the embodiments are replaced. Further, the present invention includes a configuration that has the same effects or a configuration that can achieve the same purpose as the configuration described in the embodiment. Further, the present invention includes a configuration in which a known technique is added to the configuration described in the embodiment.

10... Plant factory, 12... Artificial light source, 14... Cultivation shelf, 20... Pot, 22... Medium, 24... Surface, 26... Cultivating soil, 30... Seedling, 32... Crown, 34... Growing point, S10... First growing period , S12...first harvest period, S14...first replanting period, S20...second growing period, S22...second harvesting period, S24...second replanting period, S30...third growing period, S32...third harvesting period, T10, T12...planting period

Claims (1)

A method for cultivating strawberries in a plant factory using an artificial light source,
To replant the seedlings, after the first harvest period from the start of strawberry harvest to the end of harvest due to yield reduction, remove the harvested seedlings from the pot and grow the crown until the growing point of the crown of the seedling is not buried. Replant the seedling in a pot so that it is buried in the medium,
The seedlings are replanted twice every 8 to 10 months,
A method for cultivating strawberries, which includes a second harvesting period and a third harvesting period in which strawberries can be harvested after the first harvesting period, with the seedlings being replanted.

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