JP2019170340A - Seedling raising medium, seedling raising method and culture method - Google Patents

Abstract

To provide a seedling raising medium capable of raising a seedling until a first flower cluster is expanded, without potting for secondary seedling raising, and a seedling raising medium capable of preventing spindly growth of seedling.SOLUTION: A seedling raising medium 10 is configured so that, a side face of a porous body 12 on whose upper surface, recesses 11 for inoculation are formed, is covered with a non-water permeable film 13 in a detachable state. The porous body 12 includes melamine resin.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a seedling culture medium, a seedling raising method and a cultivation method.

  Various methods are known for raising vegetables such as tomatoes.

  For example, when raising tomato seedlings, after seeding tomatoes in plug trays of about 72 to 128 holes and then carrying out primary seedling raising seedlings until mutual shielding occurs, a slightly larger pot or rock wool It is known to transplant a seedling into a cube and to carry out a secondary seedling that grows until the first inflorescence develops, that is, until it can be planted.

  Patent Document 1 discloses a plant growing apparatus including a growing environment adapted to include a plant and water so that the rhizome of the plant is in contact with the main body of water. Here, the suction device arranged to draw water from the growing environment is formed from a foam formed of urea melamine formaldehyde polymer.

Special table 2007-537730 gazette

  At this time, in order to efficiently raise the plant, it is conceivable to use one medium without performing potting for secondary seedling until the first inflorescence develops.

  However, since there is a difference in required water retention and water absorption between the primary seedling culture medium and the secondary seedling culture medium, for example, when the primary seedling culture medium is used when performing the secondary seedling, Insufficient sex will cause seedling growth failure. This is because the roots become longer as the plants are nurtured, so that constant water retention and water absorption in the depth direction of the seedling culture medium cannot be obtained, and in particular, the water retention on the upper side of the seedling culture medium is insufficient. Because. Here, when the water retention capacity of the whole seedling culture medium is increased, the amount of water retention on the lower side of the seedling culture medium becomes excessive, and root decay of the seedling occurs.

  Here, since the foam formed of the urea melamine formaldehyde polymer has low water retention and water absorption, even if it uses the suction device currently disclosed by patent document 1, it does not carry out a secondary seedling, and plantes it permanently. It is difficult to grow plants until it is possible.

  Also, under the seedling environment where the cultivation space is limited, if the water retention and water absorption are not within the appropriate ranges, the seedling grows up, causing problems such as the neighboring seedlings and leaves tangling and the leaves tearing during regular planting. is there.

  An object of one embodiment of the present invention is to provide a culture medium for raising seedlings capable of raising plants until they can be planted without performing potting for secondary seedlings. .

  Another object of one embodiment of the present invention is to provide a seedling-growing medium that can prevent seedling growth.

(1) The seedling is characterized in that the side surface of the porous body on which the concave portion for seeding is formed is detachably covered with a water-impermeable film, and the porous body contains a melamine resin. Medium.
(2) The culture medium for raising seedlings according to (1), wherein the recess is a cut within a range of 5 mm to 10 mm in depth.
(3) The culture medium for raising seedlings according to (2), wherein the cut is in a cross shape or a lattice shape.
(4) The culture medium for raising seedlings according to any one of (1) to (3), wherein the porous body has a through hole formed from the recess.
(5) The porous body is a rectangular parallelepiped, and the side surface is a surface having a maximum surface area of the rectangular parallelepiped. (1)-(4) For raising seedlings Culture medium.
(6) A step of seeding a plant in the seeding recess of the seedling culture medium according to any one of (1) to (5), and a state in which the planted plant can be planted The seedling raising method characterized by including the process of raising to a seedling, and not implementing the pot raising for secondary seedling raising.
(7) The method for raising seedlings according to (6), wherein the plant is raised using artificial light.
(8) The method for raising seedlings according to (6) or (7), wherein the plant is a tomato.
(9) A step of raising a plant by the seedling raising method according to any one of (6) to (8), a step of removing the water-impermeable film from a seedling culture medium on which the plant is raised, The cultivation method characterized by including the process of planting the culture medium for raising seedlings from which the water-permeable film was removed.

  According to one embodiment of the present invention, it is possible to provide a culture medium for raising a seedling capable of raising a plant until it can be planted without performing pot raising for secondary seedling. .

  In addition, according to one embodiment of the present invention, it is possible to provide a seedling-growing medium that can prevent seedling growth.

It is a schematic diagram which shows an example of the culture medium for seedling raising of this embodiment. It is a schematic diagram which shows an example of the method of planting the seedling of the plant of FIG. 1 in the medium for planting.

  Hereinafter, modes for carrying out the present invention will be described.

  In FIG. 1, an example of the culture medium for raising seedlings of this embodiment is shown.

  FIG. 1 shows an example of growing a plant using the seedling culture medium 10, and the seedling S is in a state where the first inflorescence F is developed and can be planted.

  The seedling culture medium 10 has a seeding recess 11 formed on the upper surface. Here, since the porous body 12 includes a melamine resin, the water absorption and water retention are high, and the side surface of the porous body 12 is covered with the water-impermeable film 13. Water evaporation can be suppressed. For this reason, the culture medium 10 for raising seedlings can maintain an appropriate amount of water.

  Here, the side surface is a surface sandwiched between the bottom surface and the top surface.

  The size and shape of the concave portion 11 for seeding can be appropriately selected according to the size and shape of the seed to be seeded. For example, when a seed having a diameter of about 1 mm to 2 mm is used like a tomato, the soaking recess 11 is a cut within a range of 5 mm to 10 mm in depth and within a range of 5 mm to 30 mm in width. preferable. Thereby, the seed can be sandwiched in the cut. Moreover, it is preferable that a notch is a cross shape or a grid | lattice form. Thereby, the operation | work which pinches | interposes a seed | species becomes easier, and it can seed | inoculate more efficiently.

  Since the side surface of the porous body 12 having high water absorption and water retention is covered with the non-permeable film 13, the seedling culture medium 10 is from when the plant is sown until the first inflorescence F develops. Sufficient water can be supplied to the plant seeds and roots R. For this reason, a plant can be raised until the first inflorescence F develops without carrying out secondary raising. As a result, since the labor of replanting the seedling S can be saved, the productivity of the seedling S can be improved. In addition, since the seedling S can stretch the root R also in the gap between the side surface of the porous body 12 and the water-impermeable film 13, the seedling S is easy to grow.

  Moreover, since the culture medium 10 for raising seedlings has water retention and water absorption within appropriate ranges, seedling length can be prevented.

  In addition, the water-impermeable film 13 is removable, and for example, the side surface of the porous body 12 may be covered with a cylindrical water-impermeable film 13, or the side surface of the porous body 12 may be rectangular non-permeable. After wrapping with the water-permeable film 13, the end of the water-impermeable film 13 may be fastened with an adhesive tape so as not to unravel.

  The pore size of the porous body 12 can be appropriately selected according to water absorption and water retention, but is preferably about 20 μm to 1000 μm.

  The porosity of the porous body 12 can be appropriately selected according to water absorption and water retention, but is preferably about 30% to 95%.

  Here, the porous body 12 is a rectangular parallelepiped, and the side surface of the rectangular parallelepiped has the maximum surface area.

  The porous body 12 has through holes formed from the recesses 11. Since the porous body 12 has pores, the seedling S can stretch the root R. However, if the through hole is formed from the concave portion 11, the seedling S easily stretches the root R, and as a result, the seedling S becomes easy to grow.

  Although the hole diameter of a through-hole can be suitably selected according to the diameter of the root R of the plant to raise, it is preferable that it is about 0.5 mm-2 mm.

  The number of through-holes can be appropriately selected according to the plant to be nurtured, but is preferably about 10 to 100 with respect to one nurturing medium 10.

  The through holes are preferably formed radially from the seeding recess 11 toward the side surface and the lower surface.

  If the non-water-permeable film 13 is white or dark, generation of aquatic can be suppressed. Moreover, since the root R can be visually recognized through the water-impermeable film 13 when the water-impermeable film 13 is transparent, it becomes easy to confirm the growth state of the seedling S.

  The material constituting the water-impermeable film 13 is not particularly limited, but polyethylene (PE), polypropylene (PP / OPP), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), vinyl chloride resin (PVC), Known materials such as polystyrene (PS / OPS) can be used.

  Next, a method for cultivating plants using the seedling culture medium 10 will be described.

  First, after seeding a plant in the seeding depression 11 of the seedling culture medium 10, seedlings are grown until the first inflorescence F develops.

  At this time, it is preferable to raise the plant using artificial light. By using the culture medium 10 for raising seedlings, it is possible to grow plants until the first inflorescence F develops without carrying out secondary seedlings. Therefore, by applying a stable seedling environment that does not depend on sunlight, The productivity of S can be further improved.

  Next, after removing the water-impermeable film 13 from the seedling culture medium 10, the seedling S is planted together with the porous body 12 in the planting medium 21 as shown in FIG. For this reason, it becomes possible for the seedling S after planting to be rooted on the planting medium 21 from the side of the porous body 12, and as a result, the seedling S after planting is likely to grow.

  At this time, among the side surfaces of the porous body 12, the surface having the maximum area is located on the lower side, and the seedlings S are easily planted in the planting medium 21. It becomes easier to grow.

  In addition, although it does not specifically limit as a plant to raise seedlings using the culture medium 10 for seedling raising, a tomato, a cucumber, eggplant, a bell pepper, pepper etc. are mentioned. When raising these plants, it is common to implement secondary seedlings, so the advantage of using the seedling culture medium 10 is great. Among these plants, tomato is fast growing and has a large yield, so that the effect of applying the seedling culture medium 10 is great.

  The porous body 12 has a length of 30 mm, a width of 60 mm, a height of 70 mm, a pore diameter of about 80 μm, and side surfaces (four sides) of a porosity of 60%, and a non-water-permeable film 13 having a thickness of 50 μm. After covering with a cylindrical polyethylene transparent film, incisions with a length of 20 mm and a depth of 10 mm were formed in a grid pattern of three 10 mm widths at the center of the upper surface, thereby forming recesses 11 for seeding. Next, 10 straight through-holes with a hole diameter of 1 mm (50 in total) were formed from the recess 11 for seeding toward the side surface and the lower surface (5 surfaces) to prepare the seedling culture medium 10. .

  After allowing the seedling culture medium 10 to absorb water, one seed of tomato (Momotaro York) (manufactured by Takii seedling) was sown in the center of the concave portion 11 for seeding, and the seedling medium 10 was placed in a sprouting device alongside a bat filled with water. Three days after the tomato seeding, the seedling-culture medium 10 was transferred from the sprouting device into the artificial light-nurturing device. Here, in the artificial photo seedling raising device, the bat filled with water was removed in order to perform the bottom surface water supply. As a seedling raising device, a seedling terrace (manufactured by Mitsubishi Chemical Agridream) was used, and an environment in which a fluorescent lamp was irradiated in a light period of 16 hours was set to a light period of 25 ° C. and a dark period of 18 ° C. In addition, irrigation with the seedling raising device was performed once a day, and a nutrient solution of EC 1.6 dS / m was supplied to the bottom surface of the seedling culture medium 10.

  As a result, the cotyledons began to develop 5 days after sowing. Furthermore, 14 days after sowing, the tomatoes begin to expand, and after 35 days 8 main leaves expand, and after 45 days the first inflorescence F expands and can be planted. became. In addition, the tomato seedlings were not accused.

DESCRIPTION OF SYMBOLS 10 Medium for seedling raising 11 Recessed part for seeding 12 Porous body 13 Non-permeable film 21 Medium for planting S Seedling F First inflorescence R Root

Claims (9)

The side surface of the porous body in which the concave portion for seeding is formed on the upper surface is detachably covered with a water-impermeable film,
The seedling culture medium, wherein the porous body contains a melamine resin.   The seedling culture medium according to claim 1, wherein the recess is a cut within a range of 5 mm to 10 mm in depth.   The seedling culture medium according to claim 2, wherein the incision is in a cross shape or a lattice shape.   The culture medium for raising seedlings according to any one of claims 1 to 3, wherein the porous body has a through hole formed from the recess. The porous body is a rectangular parallelepiped,
The medium for raising seedlings according to any one of claims 1 to 4, wherein the side surface includes a surface having a maximum surface area of the rectangular parallelepiped. A step of sowing a plant in the seeding recess of the seedling culture medium according to any one of claims 1 to 5;
A step of raising seedlings until the sowed plant can be planted,
A seedling raising method characterized by not carrying out potting for secondary seedling raising.   The seedling raising method according to claim 6, wherein the plant is raised using artificial light.   The seedling raising method according to claim 6 or 7, wherein the plant is a tomato. A step of raising a plant by the seedling raising method according to any one of claims 6 to 8,
Removing the water-impermeable film from the seedling culture medium in which the plant has been grown,
The cultivation method characterized by including the process of planting the seedling culture medium from which this water-impermeable film was removed.

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