JPH0851857A - Culture of strawberry and device for culturing the same - Google Patents

Abstract

PURPOSE:To reduce the number of seedling transplantation works and also reduce the cost of cooling treatments at nights by supplying a cooled liquid to the root circle part of a child seedling set in a main field at nights to cool the root circle part. CONSTITUTION:Child seedlings produced by developing runners obtained from a parent seedling are raised, picked and set in a main field 11. A cooling liquid such as water in a tank 14 is cooled with a chiller 15 and subsequently supplied to the root circle part of the child seedling 4 to cool the root circle part at nights. A heeling-in for the low temperature treatment of the child seedling is not necessary, and the differentiation of the petal is stimulated due to the cooling of the root circle part.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a method for cultivating strawberries.

[0002]

2. Description of the Related Art In strawberry cultivation, flower bud differentiation is promoted for early shipment. Since flower bud differentiation of strawberry occurs at a low temperature for a predetermined short day, seedlings in high-lying regions have been used as a method for promoting flower bud differentiation. However, this high-cold land raising seedlings is extremely difficult to move the cultivation floor, and in recent years, in greenhouse cultivation, a light-shielding curtain is arranged above the house to enable a short-day environment, and air-conditioning equipment is used. The cold air is supplied to the house to create a low temperature environment.

[0003]

However, even in the case of greenhouse cultivation, after raising the seedlings, the seedlings are collected and temporarily planted in a temporary planting bed, and then placed in the above-mentioned short-day, low temperature environment. (Flower bud differentiation promoting treatment) is performed to differentiate the buds, and after the flower buds are differentiated, planted in this field and cultivated until harvest. Therefore, replanting of seedlings such as temporary planting and fixed planting in the main field was required at least twice, which required a great deal of labor. Temporary planting was carried out before planting in this field because the low temperature treatment (night cooling treatment) uses the cooling equipment as described above, so if the space for supplying cool air (cooling space) becomes large, it will be cooled. The cost is high. Therefore, in order to make the cooling space as small as possible, the distance between seedlings is also made relatively small during temporary planting. However,
If the distance between the seedlings was maintained at the time of temporary planting even after the flower bud differentiation, the adverse effects such as contact between adjacent seedlings would occur as the seedlings grew. Therefore, in order to widen the distance between seedlings and not hinder the growth of seedlings, planting has been carried out in this field after flower bud differentiation.

The present invention has been made in order to solve the above-mentioned problems. Instead of temporary planting, it is planted directly in the main field and subjected to night cooling treatment to reduce the number of seedling replanting and to reduce the cultivation labor. An object of the present invention is to provide a strawberry cultivation method and cultivation device that can reduce the costs associated with night cooling treatment.

[0005]

Means for Solving the Problems As a result of intensive studies for achieving the above-mentioned object, the present inventor has found that in the flower bud differentiation of strawberries, if the crown, which is the source of roots, is cooled, the crown is more practically obtained. The present invention has been completed, focusing on the fact that the flower bud differentiation is promoted by cooling the rhizosphere containing the same.

In order to achieve the above object, the method for cultivating strawberries according to the invention described in claim 1 is such that a runner is generated from a parent strain to raise child seedlings, and then each child seedling is collected to the main field. The planting is carried out directly, and in this field, cooling liquid is supplied to the rhizosphere at night to perform night cooling. In the invention according to claim 2, further, at least the upper part of the rhizosphere is covered with a heat insulating material. The invention according to claim 3 is characterized by performing night cooling.
The nursery bed is set at a predetermined height from the foundation surface, and the seedlings are raised by overcoming the peripheral wall of the nursery bed or overrunner support members arranged above the peripheral wall to grow downward. And

The strawberry cultivating apparatus according to a fourth aspect of the present invention is a strawberry cultivation apparatus in which a cultivation container is filled with a medium, a culture solution supply pipe capable of supplying a culture solution to the medium, and a planted seedling. A heat-insulating material that covers at least the rhizosphere of the seedlings, and a cooling fluid supply device that has a cooling fluid supply pipe and a cooling fluid supply source that can supply the cooling fluid to the rhizosphere of the seedlings. And

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in more detail based on an embodiment shown in the drawings. In the figure, 1 is a nursery bed used in the present embodiment, and 10 is a cultivation device having a main field.

The nursery bed 1 comprises a cultivation container 1a and a culture medium 1b filled in the cultivation container 1a, and is installed at a predetermined height from the ground by leg members 2. This nursery bed 1
The parent strain 3 is planted and the seedlings 4 are formed. That is, as the runner 5 generated from the parent strain grows, it overcomes the side wall 1c of the nursery bed 1 and grows downward to grow the seedlings 4
To form. Further, a plurality of runners 5 and child seedlings 4 are formed.

When each of the seedlings 4 reaches a predetermined growth time, it is preferable to attach a small pot 4a made of rock wool or the like to the root of each of the seedlings 4. Small pot 4a
Can be planted in the main field with the attached, and it is easier to plant than in the case where the pot 4a is not attached. In planting in the main field, it is preferable to sprinkle water directly on the seedlings 4 to promote rooting of the seedlings 4 before a predetermined period.

When the rooting of each seedling 4 is promoted and a predetermined growth period is reached, each seedling 4 is collected. According to this embodiment, since the runner 5 is grown downward from the nursery bed 1 installed at a predetermined height, the child seedling 4 does not directly land on the ground. Therefore, the work of collecting seedlings is easier than the case of landing the seedlings 4 on the ground and growing them.

The cultivating device 10 is provided with a main field 11 composed of a cultivating container 11a and a medium 11b filled in the cultivating container 11a, and is arranged above the medium 11b along the longitudinal direction of the cultivating container 11a and has a peripheral wall. The culture solution supply pipe 12 is provided with a plurality of small holes (not shown). Then, the seedlings 4 collected from the nursery bed 1 are planted in the medium 11b, and the culture solution is supplied from a culture solution supply source (not shown) to the culture solution supply pipe 12 to grow the seedlings 4. Reference numeral 11c is a drainage channel formed below the medium 11b.

The cultivating apparatus 10 of this embodiment also has a cooling liquid supply pipe 13 for supplying a cooling liquid such as water, a tank 14 as a cooling liquid supply source, and a cooling liquid in the tank 14 circulated. And a chiller 15 for cooling by cooling. The cooling liquid supply pipe 13 may have any structure and may be arranged in any manner as long as it can supply the cooling liquid to the rhizosphere of the child seedling 4, for example, on the peripheral wall. The structure may be provided with a plurality of small holes, which may be embedded in the medium 11b near the rhizosphere, or the culture solution supply pipe 12
You may arrange | position above a culture medium like. Further, the culture solution supply pipe 12 may be connected midway so that the culture solution supply pipe 12 has a function as a cooling liquid supply pipe.

The cultivation apparatus 10 of this embodiment is further provided with a substantially semi-tubular heat insulating material 16 made of expanded polystyrene or the like. The heat insulating material 16 covers the upper part of the rhizosphere to enhance the cooling efficiency of the rhizosphere. The reference numeral 16a is
A cutout portion or a cutout portion is provided on a side portion of the heat insulating material 16 to allow a stem to pass therethrough. The width of the cutout portion or the cutout portion 16a is not particularly limited, and it may be set such that each stem is passed through one by one or a plurality of stems are passed together, and further, the length of the heat insulating material 16 is longer. The structure may be cut out except for the vicinity of both ends in the direction. In addition, in this embodiment, since the seedlings 4 are planted in two rows along the longitudinal direction of the medium 11b, the rhizospheres of both rows can be covered with one heat insulating material 16 so that they are substantially half. Although it is formed in a tubular shape, the present invention is not limited to this and may be covered in each row. If the cooling liquid supply pipe is arranged between the heat insulating material 16 and the culture medium 11b so as to cover the rhizospheres of both rows as in this embodiment, the cooling liquid will not be ejected to the outside of the heat insulating material 16. Therefore, there is an advantage that it is surely supplied only to the rhizosphere.

According to the present embodiment, after collecting the seedlings 4 from the nursery bed 1 and growing them as they are until the time of harvesting, the strawberries adjacent to each other do not collide with each other at an interval such that they do not hinder the growth. Plant directly in the main field. At night, the cooling liquid supply device is activated to supply the cooling liquid. In this case, because the cooling liquid is supplied only to the rhizosphere,
Compared with the conventional case where the space is cooled by cold air, there is less waste and efficient cooling is possible. In addition, flowing a cooling liquid such as water also promotes nitrogen interruption, which is another requirement for strawberry flower bud differentiation.

Here, the short-day treatment method required for promoting flower bud differentiation is not particularly limited, but for example, a light-shielding curtain may be provided above the house as in the conventional case.

In the above-mentioned embodiment, a nursery bed which is erected at a predetermined height from the ground is used, and the runner and the seedlings are hung and grown. However, in the present invention, the structure of this nursery bed, And the cultivation method is not limited at all, the runner is grown substantially parallel to the upper surface of the medium and landed,
Needless to say, the method according to claim 1 may be applied by generating a child seedling from this landed portion, collecting this child seedling, and planting it in the main field.

Further, when using a nursery bed which is erected at a predetermined height as in the above embodiment, a runner support member is further arranged above the peripheral wall of the nursery bed, and the runner support member is passed over to allow the seedlings to grow. When the seedlings are raised, the height from the ground to the part where the runner starts to droop becomes substantially higher, so that more seedlings can be formed.

Further, in the above-mentioned embodiment, the heat insulating material covering only the upper part of the rhizosphere is used, and it does not interfere with the photosynthetic action of the seedlings, so that it is not necessary to remove the heat insulating material during the daytime. Easy to handle. However, even if it is a little troublesome, if it is always removed during the daytime, it is possible to dispose a heat insulating material that covers the entire seedlings. By using the heat insulating material that covers the entire seedlings in this way, it is possible to create a short-day environment without using a light-shielding curtain by adjusting the deployment time of this heat insulating material.

[0020]

EFFECTS OF THE INVENTION According to the strawberry cultivation method and cultivation apparatus of the present invention, it is possible to directly plant in the main field and perform night cooling treatment without temporary planting. . Moreover, since only the rhizosphere is cooled at night, the cost associated with the night cooling process can be reduced.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing a nursery bed used in the strawberry cultivation method of the present invention.

FIG. 2 is a diagram schematically showing an embodiment of the strawberry cultivation device of the present invention.

[Explanation of symbols]

 1 Nursery Bed 2 Leg Member 3 Parent Strain 4 Child Seedling 5 Runner 10 Cultivator 11 Main Field 12 Culture Solution Supply Pipe 13 Coolant Supply Pipe 14 Tank 15 Chiller 16 Insulation Material

Claims (4)

[Claims] 1. A runner is generated from a parent strain to raise child seedlings, and then each child seedling is collected and planted directly in this field. In this field, cooling liquid is supplied to the rhizosphere at night and at night. A method for cultivating strawberries, which comprises cooling. 2. The method for cultivating strawberries according to claim 1, wherein at least the upper part of the rhizosphere is covered with a heat insulating material for night cooling. 3. A nursery bed is installed at a predetermined height from the foundation surface, and the seedlings are grown downward by overcoming the peripheral wall of the nursery bed or over the runner support member arranged above the peripheral wall. The method for cultivating strawberries according to claim 1 or 2, wherein the seedlings are raised. 4. A main field in which a culture container is filled with a medium, a culture solution supply pipe capable of supplying a culture solution to the medium, a heat insulating material covering at least the rhizosphere of the planted seedlings, and a seedling And a cooling liquid supply device having a cooling liquid supply source capable of supplying the cooling liquid to the rhizosphere of the strawberry.