JP7126294B1 - How to grow strawberry seedlings - Google Patents

Abstract

[PROBLEMS] To provide a method for growing strawberry seedlings, which enables sufficient water supply and reduces the risk of disease and pest damage and root rot in the case where offspring grown on runners extending from the parent strain are grown without being separated from the parent strain. With the goal.
SOLUTION: A planter for cultivating a parent strain in which a parent strain is cultivated, which is a nutrient tank filled with a nutrient solution of a predetermined depth, and a water tank which is arranged on the side of the planter for cultivation of the parent strain and filled with water of a predetermined depth. and a planter for cultivating seedlings, in which water is circulated, and seedlings grown on runners extending from parental strains are cultivated by being immersed in water.
[Selection drawing] Fig. 1

Description

The present invention relates to a method for growing strawberry seedlings.

Conventionally, as a growth system for strawberry seedlings that grow offspring grown on runners that grow from the parent strain without being separated from the parent strain, the cultivation bed of the parent strain is installed on a cultivation shelf for cultivating the parent strain in a horizontal direction, and one side in the short direction is placed. Horizontally long cultivation racks for seedling cultivation are arranged in parallel, pots in which seedlings generated from runners are fixed are installed, and new seedlings that are successively generated on the growing runners are fixed in separate pots for seedling cultivation. It is generally adopted to be installed on the cultivation rack.

In the above growing system, since soil is placed as a medium in the seedling cultivation pot and a nutrient solution is supplied, there is a problem that the growth of pathogenic bacteria causes contamination of the medium and the occurrence of pests, which easily causes disease and pest damage. Furthermore, if the medium is too dry, the roots will not grow well even if they take root, and even if they are sufficiently watered, the temperature will rise and the roots will rot.

On the other hand, a growing system has been proposed in which a water-permeable sheet is suspended from a cultivation shelf for cultivating a parent strain, and runners extending from the parent strain are laid on the sheet (see, for example, Patent Document 1). Since the sheet is periodically watered to absorb water from the roots in contact with the sheet, the roots do not stick to the soil, disease and insect damage is suppressed, and root rot is prevented. However, there is a problem that the amount of water that can be absorbed by the roots is small and it is difficult for the seedlings to grow.

JP-A-7-327480

In view of the above circumstances, the present invention provides strawberry seedlings that can sufficiently supply water and have little risk of disease and pest damage and root rot when the offspring generated in the runner growing from the parent strain is grown without being separated from the parent strain. The purpose is to provide a method for growing

The invention of claim 1 is
To provide a method for growing strawberry seedlings, characterized by cultivating by immersing seedlings generated in runners growing from parental strains in circulated water to which nutrients are not added.

The invention of claim 2 is
To provide a method for growing strawberry seedlings, characterized by cultivating by immersing seedlings generated in runners growing from parental strains in flowing water to which nutrients are not added.

According to the present invention, since seedlings are immersed in circulating or flowing water to raise seedlings, it is possible to sufficiently replenish water and reduce the risk of pest damage and root rot.

A side view showing an embodiment of the strawberry seedling raising system of the present invention. AA sectional view of FIG. BB sectional view of FIG. A perspective view showing an example of a urethane culture medium using the seedling-raising system of the present invention. The perspective view which shows the protrusion provided on the lower side of a urethane culture medium.

(Seedling system 1)
A strawberry seedling raising system 1 according to an embodiment of the present invention will be described with reference to the drawings. A seedling-raising system 1 is used for raising strawberry seedlings for hydroponic cultivation, and as shown in FIG. As shown in FIGS. 1 to 3, each planter installation shelf 11 includes a substantially rectangular parallelepiped planter 2 for cultivating a horizontally long parent strain, and a substantially rectangular parallelepiped that is arranged substantially parallel to both sides of the planter 2 for cultivating the parent strain in the short direction. It is provided with planters 3, 3 for cultivating offspring that are oblong in shape, and urethane media 4 for individually fixing offspring C generated on runners SR extending from the parental strain P cultivated in the planter 2 for cultivating parental strains. Above each planter installation shelf 11, an LED lighting L is provided for irradiating light to the parent strain P cultivated in the parent strain cultivation planter 2 and the offspring C cultivated in the offspring cultivation planter 3. In the seedling raising system 1 as a whole, the planters 2 for cultivating parent strains, the planters 3 for cultivating seedlings, and the lighting L are alternately stacked in the vertical direction.

(Parent strain cultivation planter 2)
As shown in FIGS. 1 to 3, the planter 2 for cultivating the parent strain is a nutrient solution tank filled with a nutrient solution N of a predetermined depth and having a top opening closed with a lid 21 . As shown in FIG. 2, the lid 21 is provided with insertion holes 21a for planting the parent strain P at intervals in the longitudinal direction. As shown in FIG. 3, the parent strain P is supported in the insertion hole 21a via a cushioning material 22 such as a sponge wrapped around it, and the root Rp exposed below the lid 21 is immersed in the nutrient solution N. In addition, as shown in FIG. 2, a liquid supply port 2a for supplying a nutrient solution is provided near one end in the longitudinal direction of the parent strain cultivation planter 2, and near the other end on the side opposite to the liquid supply port 2a, A drainage port 2b for discharging the nutrient solution is provided, and the nutrient solution is always circulated so as to flow from the supply port 2a toward the drainage port 2b.

The nutrient solution discharged from the drainage port 2b flows down into a nutrient solution tank (not shown) installed at the bottom of the seedling raising system 1, foreign matter is removed by a filter in the nutrient solution tank, and an aeration device (not shown) is used. After replenishing the dissolved oxygen, it is delivered to the liquid supply port 2a by a pump (not shown). The drain port 2b is formed by an overflow pipe protruding from the bottom surface of the planter 2 for cultivating the parent strain and having an open upper end, and maintains the depth of the nutrient solution so that substantially the entire root Rp can be immersed. In the nutrient solution N of the planter 2 for cultivating the parent strain, the cover 21, the parent strain P inserted into the insertion hole 21a, and the cushioning material 22 block the entry of light into the planter, thereby suppressing the generation of blue powder (algae). It is In addition, in FIG. 1, the piping etc. which connect the planter 2 for parent strain cultivation, and the nutrient solution tank, pump, etc. which are installed in the lower part are abbreviate|omitted.

(Planter 3 for seedling cultivation)
As shown in FIGS. 1 to 3, the planters 3, 3 for cultivating parent stocks are water tanks filled with water W of a predetermined depth, open on the entire top surface, and having a large width in the lateral direction. 2 can be cultivated by immersing it in water W. As shown in FIG. 2, each seedling cultivation planter 3 is provided with a water supply port 3a for supplying water near one end in the longitudinal direction, and a drainage port 3b for discharging water near the other end on the opposite side of the water supply port 3a. is provided, and the water W is constantly circulating so as to flow from the water supply port 3a toward the water discharge port 3b.

The water discharged from the drain port 3b flows down to the water tank 31 installed at the bottom of the seedling raising system 1, the filter provided in the water tank 31 removes foreign matter, and the dissolved oxygen is supplemented with an aeration device (not shown). It is delivered to the water supply port 3a by a pump (not shown). The drain port 3b is formed by an overflow pipe protruding from the bottom surface of the planter 3 for cultivating seedlings and having an open upper end, and maintains a depth of water sufficient for immersing the roots Rc (Fig. 3) of the seedlings C. . Specifically, it is substantially the same as the vertical thickness dimension of the urethane culture medium 4, which will be described later, and when the urethane culture medium 4 is allowed to absorb sufficient water so that substantially the entirety is submerged in water, the upper surface of the urethane culture medium 4 is a planter for cultivating seedlings. It is set to be approximately the same height as the water surface of 3.

Parent strain P and offspring strain C are connected by a runner SR. Nutrients necessary for raising seedlings are supplied from parent strain P to each offspring strain C through the runner SR. Since it is sufficient to supply the required amount of water, the water W in the planter 3 for cultivating seedlings is not added with any nutrients that generate blue powder. Therefore, unlike the planter 2 for cultivating the parent strain, there is no risk of blue powder generation even when exposed to light, and the top can be opened entirely. In addition, in FIG. 1, the piping etc. which connect the planter 3 for seedling cultivation, the water tank installed in the lower part, a pump, etc. are abbreviate|omitted.

(Urethane medium 4)
The urethane culture medium 4 is a culture medium made of urethane sponge, and is formed in a rectangular parallelepiped shape, and as shown in FIG. A slit S is provided. The urethane sponge used has an open-cell structure, and after being compressed in water to push out the air, it can absorb and retain a sufficient amount of water by releasing the compressed state. Even seedlings without roots can be rooted quickly. Also, if the urethane medium 4 that has absorbed water is placed in the planter 3 for cultivating seedlings and is immersed in the water W that has been flooded, as indicated by symbol X in FIG. Water is constantly supplied, and continuous growth is promoted even after rooting.

Roots Rc rooted from the offspring C grow downward inside the urethane sponge as they grow, break through the lower surface of the urethane medium 4, and emerge. Since the resistance of the urethane sponge disappears, the seedlings grow so as to spread out in the horizontal direction, and the amount of water that can be taken in increases, so that the whole seedling grows even larger. However, if the urethane medium 4 remains submerged in water even after the roots Rc emerge, the gap between the urethane medium 4 and the bottom surface of the planter 3 for cultivating seedlings is narrow, hindering the growth of the roots Rc. Therefore, after the root Rc emerges, in order to widen the gap and promote the growth of the root Rc, as indicated by symbol Y in FIG.

(Projection 5)
The projecting body 5 is made of plastic and, as shown in FIG. It has a pin portion 53 that protrudes and has a retainer 53a at its tip. When the pin portions 53 are inserted into the four corners of the bottom surface of the urethane culture medium 4, the legs 51 float the urethane culture medium 4 so as to widen the gap between it and the bottom surface of the planter 3 for cultivating seedlings, as indicated by symbol Y in FIG. It is supported stably in that state. As a result, the growth of roots Rc protruding from the lower surface is not hindered. The pin portions 53 may be inserted not only at the four corners but also at other portions as long as the pin portions 53 can stably support the urethane culture medium 4 away from the root-protruding portions. By preparing a plurality of types of leg portions 51 having different lengths, it is possible to cope with various water depths.

(Features of the seedling-raising system 1 and the seedling-raising method using it)
In the above-described strawberry seedling-raising system 1, seedlings C are immersed in circulating water W while being supplemented with dissolved oxygen to raise seedlings, so rapid rooting is promoted, and rooted roots Rc are sufficiently hydrated and oxygenated. The offspring C can be reliably grown by performing the following steps. Since no soil is used, it is difficult for insects to grow. Water does not contain nutrients, so it is difficult for pathogens to grow. And since the water is constantly circulating, the risk of root rot occurring is low.

The two offspring planters 3 arranged in parallel on both sides of the parental strain cultivation planter 2 can distribute and attract the runners SR extending from each parental strain P in the left and right opposite directions. Since the entire surface is open and has a sufficient width in the lateral direction, there is a high degree of freedom in the placement layout of the runner SR and the seedlings C (urethane culture medium 4). In other words, it is possible to manage the offspring C that are sequentially generated from the runner SR by arranging so as to prevent the runners from being complicatedly entangled with each other.

Each offspring C is set in the offspring cultivation planter 3 in a state of being fixed on the individual urethane medium 4, so that other offspring and roots are prevented from becoming entangled with each other during growth. Further, the urethane medium 4 serves as an anchor and stabilizes the routing position of the runners SR, thereby preventing the runners from moving and becoming entangled with each other. When the offspring C is separated from the runner SR and used as a strawberry seedling, if the urethane medium 4 is unnecessary, it can be easily removed by cutting it.

At the initial stage when the offspring C has just emerged, the urethane medium 4 is allowed to absorb water, and as indicated by the symbol X in FIG. On the other hand, after the root Rc extends downward in the urethane medium 4 and protrudes from the bottom surface of the urethane medium 4, as indicated by symbol Y in FIG. A space for the growth of the roots Rc is ensured by widening the gap between the roots Rc, and the roots Rc are directly exposed to water supplemented with dissolved oxygen, thereby promoting expansive growth. Since the projections 5 are rod-shaped, they are not entangled with the roots Rc, and when the seedlings C are separated from the runner SR and taken out as seedlings, they can be easily removed by extracting them from the urethane medium 4.例文帳に追加Since the retainer 53a is formed in a spherical shape, it can be easily removed.

(Modification of above embodiment)
In the above embodiment, the seedling C is fixed so as to be inserted into the slit S provided in the urethane medium 4 (Fig. 4), but instead of the slit, an insertion hole may be provided and fixed so as to be inserted into the hole. , U-shaped fasteners, or other securing members may be used. The urethane culture medium 4 is not limited to a rectangular parallelepiped shape, and other shapes such as polygonal prisms, cylinders, and other shapes can be used as long as it has a thickness substantially equal to the water depth of the planter for cultivating seedlings and can be installed stably. be able to.

In the above embodiment, the urethane medium 4 is arranged so that water can easily circulate through the gaps between the mediums, or the gaps between the bottom surface of the planter can be individually widened according to the growth of the roots Rc. Although each sub-stalk is fixed to the separately formed one, it may be integrally formed by, for example, providing a groove on the upper surface to serve as a path for water. Further, instead of the urethane sponge, another sponge having an open cell structure may be used, or another water-absorbing medium may be used. In addition, without using a medium, for example, a cylindrical body having a through hole or a slit formed is placed in a planter for seedling cultivation, and the seedling C is dropped into it, or the seedling C is directly added to the water W. You may install it so that it may be submerged.

In the above embodiment, the protrusions 5 are formed in a rod shape, but the present invention is not limited to this, as long as the space between the urethane medium 4 and the bottom surface of the planter can be widened to secure a space for the growth of the roots Rc. , other shapes of protrusions may be used. In addition, even if it is not attached to the urethane culture medium 4, it is installed on the bottom surface of the planter and interposed between the bottom surface of the urethane culture medium 4 to float the urethane culture medium from the bottom surface of the planter and widen the gap. You can also use objects.

In the above-described embodiment and modification, after the roots Rc of the offspring C emerge from the urethane medium 4, the roots are placed between the urethane medium 4 and the bottom of the planter to secure a space for the growth of Rc. A space for the growth of Rc is secured, but instead of this, the urethane medium 4 is lifted from the seedling cultivation planter 3 and dehydrated by squeezing it to contain a lot of air to give buoyancy and float on the water W. You can do it. According to this method, since no material is used, the cost can be reduced, and the burden of cleaning up after the seedlings are taken out can be reduced.

In the above-described embodiment, the planter installation shelf, as shown in FIGS. Although it is provided by five vertically fixed beams 14...14, shelves of various shapes can be used, for example, a rectangular shelf board supported by vertically erected pillars at each of its four corners. be able to. It should be noted that only one shelf may be installed, or it may be installed directly on the floor without providing a shelf. In addition, the present invention can be modified in various ways without departing from the scope of the invention.

1 Seedling raising system 11 Planter installation shelf 2 Planter for parent strain cultivation (nutrient tank)
3 Planter for seedling cultivation (water tank)
4 Urethane medium (sponge medium)
5 Protrusions P Parent strain C Child strain

Claims (2)

1. A method for growing strawberry seedlings, characterized by cultivating by immersing seedlings generated in runners growing from parental strains in circulated water to which nutrients are not added. 1. A method for growing strawberry seedlings, characterized by cultivating a seedling grown on a runner extending from a parental strain by immersing it in running water without added nutrients.

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