JP2001103841A - Method of raising seedling and apparatus therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new method for raising seedlings by an optically germinating method. SOLUTION: An upper container (1) having openings (3) in the bottom part, and culture soil (6) packed in the interior space (S1) is laid on a lower container (2) with the culture soil (7) packed in the interior space (S2) so that the upper container (1) and the lower container (2) may be separated after the tip parts (21a) of taproots (21) of plantlets germinated from seeds (8) seeded on the surface of the culture soil (6) in the upper container (1) have penetrated into the culture soil (7) of the lower container (2) through the openings (3) at the bottom parts of the upper container (1), and the tip parts (21a) of the taproots (21) may be cut off.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for raising seedlings from seeds to predetermined seedlings before transplanting vegetables and cereals into a field, and a seedling raising apparatus used for the method. The present invention relates to a seedling raising method suitable for a method called light germination and a seedling raising device used for the method.

[0002]

2. Description of the Related Art Before growing various vegetables and cereals such as rice in a field, a method of performing initial growth from seed to seedling in a controlled environment and transplanting only normally grown seedlings to the field is a method of transplanting. This is a method generally used conventionally.

[0003] In this general method, seeds are buried in a cultivation of a nursery tool called a pot or a nursery bed filled with cultivation soil, germinated in that state, grown to a predetermined seedling, and then normally germinated and raised. Only young seedlings that have been selected are sorted and shipped as seedlings or transplanted to fields. Therefore, the seedling raising device itself was a simple portable soil cultivation container without any difference.

[0004]

The basic idea in the conventional seedling raising method is that it is difficult to manage germination and early seedlings in a wide field, so that they are performed in a limited narrow space. In order to facilitate environmental management, or to use the seedlings themselves as products, it is possible to efficiently produce a large number of seedlings, etc., but all of them are seedling raising methods based on economic rationality, There is no concept of raising seedlings from the viewpoint of agricultural products, such as "creating delicious crops" or "increase yields".

[0005] That is, in the seeding operation in the conventional seedling raising method, a method is generally employed in which a predetermined amount of seed is sown at predetermined intervals in cultivation soil in a seedling raising tool, and the soil is covered on the soil to cover the soil. That is, the seeds are buried in the soil without being exposed to sunlight, being buried in the soil shielded from sunlight by several mm to several tens of mm below the ground surface (hereinafter referred to as “dark germination” in the present invention). ing.

This dark germination will be described with reference to FIG. 11 which shows the state of the dark germination over time. First, seeds 30 are buried in the soil 29 as shown in FIG. Next, as shown in FIG.
Starts growing downward from the seeding position in the soil, and the germinated buds 31 start growing from the seeding position in the soil toward the ground surface. Therefore, the cotyledon 31 in the early stage of germination is white because it cannot be photosynthesized in the soil and starts growing mainly by the nutrients held by the seeds, while the radicle 32 is necessary for growth. It tends to grow roots deep underground in search of nitrogen content.

Next, the cotyledons 31 appear on the surface of the ground as shown in FIG. 3 (c) and become bifoliates 33 (in the case of dicotyledons; the same applies hereinafter), while the radicles 32 grow deep in the soil. Main root 3
The number of roots 36 grows laterally at the same time, and the growing points 34 continue to grow upward due to nutrients absorbed from the roots. Next, as shown in FIG. 4D, the growth progresses and new leaves 37 are generated and grow one after another. In this state, the two leaves 33 are withered and only wait for the fall. In other words, the Futaba 33 supplies its own nutrients for the growth of the growing point 34 and the growth of the root 35, and follows its fate to wither.

[0008] Incidentally, the nutrients in the soil basically penetrate from the surface of the earth, and do not spring up from underground. However, in the conventional dark germination, the seeds 30 are sown so as to be buried in a place several mm to several cm below the ground, and the radicles 32 generated from the seeds 30 are directed to the underground with less nutrients according to the essential characteristics of the roots. In addition, the side root 36, which is a nitrogen-absorbing root, grows preferentially in order to find the nitrogen necessary for growth. Therefore, even if organic fertilizer is sprayed on the ground surface, it will be decomposed into aerobic bacteria near the ground surface and will be absorbed into the root hair only after being transported into the soil by water supplied from the ground surface, but the root itself will be Nitrogen-absorbing roots are growing preferentially, so nitrogen absorption is increased, and the appearance of taller and smoother stems with green leaves is observed. Since the growth of the phosphorus-absorbing roots is not coordinated with the growth of the nitrogen-absorbing roots, the phosphorus-absorbing ability is inferior and there is a problem in the growth of fruits.

On the other hand, as a germination method for solving the above-mentioned problem of dark germination, there is a "light germination" method which has been researched and developed by the present inventors and further verified by a field test. In this light germination method, seeds are sown on the ground surface to germinate in the presence of sunlight, and the roots are grown near the ground surface, which is rich in nutrients and sterilized by ultraviolet rays in sunlight, to absorb phosphorus. It is a new method to form a balanced rhizosphere between roots and nitrogen-absorbing roots. This light germination will be described with reference to FIG. 10 showing the change over time of germination. First, the seed 30 is sown on the surface of the cultivated soil 29 as shown in FIG. The seeds 30 germinate on the ground surface and buds 3
The radicles 32 generated with the release of 1 start growing into the ground according to their characteristics.

Next, as shown in FIG. 1C, the radicle grows underground to form a main root 35. In the process,
In the “oxidized layer A” near the surface (the surface layer having a depth of about 3 to 5 cm from the surface, which has good air circulation and has a bactericidal action by ultraviolet rays of sunlight), the main root 35 Root hairs 38 extend laterally from. This root hair 38
Are root hairs that do not exist in the aforementioned dark germination. In the portion of the oxidized layer A, nutrients generated by the decomposition of various organic substances near the ground surface by aerobic bacteria penetrate first with water, and are rich in air permeability, less germs, phosphates, etc. Because it is rich in nutrients necessary for fruit growth
The root hairs 38 can efficiently absorb phosphorus indispensable for growing the fruit. In addition, the main root 35 is located in the “reduced layer B” below the oxidized layer (the area where the flow of air is small and the decomposition of microorganisms mainly by anaerobic bacteria progresses, and the fertilizer component is rich in nitrogen component). Lateral roots 36 for mainly absorbing nitrogen grow in the reduced layer B. By the way, the aforementioned "dark germination"
In this case, as shown in FIG.
When seeds germinate, the main roots 35 extend straight down into the reduced layer B, and the root hairs extending laterally in the oxidized layer A are germinated. Almost no.

Further, in the case of light germination, as shown in FIG. 10, the foliage 33 produced by germination grows in the sunlight, so that photosynthesis by the futaba 33 is also started, and in the early stage of germination. The nutrients necessary for growth are supplied by the photosynthesis of Futaba 33 in addition to the nutrients originally held by the seeds. As a result, as shown in FIG. 4D, it has been found that even if new leaves 37 are generated one after another, the two leaves 33 are still green and continue photosynthesis without wilt.
This is in contrast to the case of dark germination in which Futaba 33 quickly withers.

The seedling raised by the conventional seedling raising method is a seedling in which the main root 35 extends downward and the nitrogen absorbing root 36 is preferentially raised, as shown in FIG. Therefore, the growth of the main root 35 in the soil progresses further, and the growth ability by nitrogen absorption is excellent, but the balance with the phosphorus absorption ability is not balanced, so that the fruit growth ability is relatively inferior. There was a tendency.

The present invention has been made in view of the above-mentioned problems, and has been made based on a new viewpoint of providing a seedling excellent in fruit growing ability. More specifically, the present invention provides a new seedling suitable for a light germination method. It is intended to provide a method and a seedling raising device.

[0014]

SUMMARY OF THE INVENTION The present invention has been made on the basis of such a viewpoint, and is characterized by being sown on the surface of a cultivated soil, germinating seeds (light germination) together with seedlings. A seedling raising method for performing initial growth, comprising an opening at the bottom, a lower container filled with cultivated soil in the internal space, and a lower portion of an upper container filled with cultivated soil in the internal space. After seeding a predetermined seed on the surface of the cultivated soil in the upper container, the tip of the main root of the seedling germinated from the seed is grown through the bottom opening of the upper container to the cultivation of the lower container, and then the seedling is grown. The present invention is characterized in that the container and the lower container are separated from each other, and the tip of the main root extending into the lower container is cut off. Thereby, in the present invention, the growth of the phosphorus-absorbing root can be promoted by removing the tip of the main-root, which is rich in nitrogen-absorbing root and has the above-mentioned phosphorus-absorbing root directly below the ground surface and is a main-root growing portion. It provides young seedlings.

The seedling raising device according to the present invention is roughly classified into two.
There are types, the first type is an upper container that has an opening at the bottom and fills the inner space with the soil, a lower container that is polymerized at the lower part of the upper container and is filled with the soil in the inner space. A root cutting member slidably disposed between the bottom plate of the upper container and the upper surface of the lower container, wherein the main roots of the seedlings germinated from seeds sown on the surface of the soil in the upper container After raising the seedling until the tip reaches through the bottom opening of the upper container to the cultivation of the lower container, slide the root cutting member to cut the tip of the main root projecting from the bottom opening of the upper container. This is a seedling raising device. As a result, the tip of the main root that has advanced into the lower container can be uniformly cut off, and the resulting seedling has a nitrogen-absorbing root removed and is a seedling rich in phosphorus-absorbing root.

As the root cutting member, a plate-shaped root cutting plate type having an opening at a position corresponding to a bottom opening of the upper container, or a linear or thin plate cutter is provided over substantially the entire length of the container. There is a sliding method.

Next, the second type is a simplified version of the first type. The upper type has an opening at the bottom and fills the inner space with the soil, and the lower part of the upper type has The lower end of the seedlings germinated from the seeds sown on the cultivation surface in the upper container, and the tip of the main root of the seedling germinated from the seeds sown on the cultivation surface in the upper container, After raising the seedlings to the cultivation of the lower container, the top root part is pulled out from the cultivation in the lower container by separating the upper container and the lower container, and then protrudes from the bottom opening of the upper container. The present invention relates to a seedling raising device capable of cutting off the tip of the main root. This allows
The tip of the main root projecting downward from the upper container is cut off at an arbitrary position by an arbitrary cutting means such as scissors.

Incidentally, these seedling raising apparatuses have various embodiments. That is, these containers are divided into a number of rooms so that a large number of seedling raising spaces are formed in the upper container and the lower container, and a commonly used pot is charged in the seedling raising space of the upper container. Some are placed.

In addition, there are various forms of attaching the root cutting member in the first method. Specifically, a protrusion protruding downward is formed on the lower peripheral edge of the bottom plate of the upper container, and at the lower end of the protrusion, an inner protrusion protruding inward is formed. A bottom plate peripheral groove portion is formed with the bottom plate to form a root cutting plate holding groove having a U-shaped cross section, the root cutting plate is inserted into the holding groove, and the root cutting plate is slidably held along the holding groove. Or an inner protrusion protruding inward at an upper inner peripheral portion of a peripheral wall of the lower container, and the root cutting is performed in a space between the inner protrusion and a bottom plate of the upper container. In some cases, a board is inserted and the root cutting board is slidably held by the inner protrusion of the lower container.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view of an essential part showing an embodiment of the first method of raising seedlings according to the present invention,
FIG. 2 is a partial plan view, and FIG. 3 is a side view thereof.
In these figures, the seedling raising apparatus of the present invention has a structure in which a square or rectangular upper container 1 and a lower container 2 of the same shape are vertically stacked, and the bottom of the upper and lower containers has A projection 1e projecting downward is formed on the peripheral edge of the bottom, and the projection 1e is fitted into the peripheral wall 2a of the lower container 2 so that the two containers can be positioned at the time of overlapping.

As shown in FIG. 2, the upper container 1 has a plurality of vertical partition walls 1b and horizontal partition walls 1b arranged in a peripheral wall portion 1a.
c, a large number of internal spaces (seedling raising space) S1 are defined, and an opening 3 is formed at the center of each internal space of the bottom plate 1d. On the other hand, the lower container 2 is also provided with a vertical partition 2b and a horizontal partition 2c at positions corresponding to the vertical partition 1b and the horizontal partition 1c of the upper container 1, respectively.
An internal space S2 is formed directly below the seedling raising space S1 of the upper container 1 directly below the seedling raising space S1. In addition, as shown in FIG. 1, an appropriate number of drain holes 10 are formed at the bottom of the lower container 2.

Further, as shown in FIG. 3, an inner protruding portion 1f is formed on the bottom of the upper container 1 below the protruding portion 1e formed on the peripheral edge of the bottom plate and protruding inward. A groove 11 having a U-shaped cross section is formed in the peripheral edge of the bottom plate by the inner protrusion 1f and the bottom plate 1d, and the root cutting plate 4 is slidably held by being inserted into the groove 11. The protrusion 1e and the lower inner protrusion 1f are formed on a pair of opposing sides of the bottom surface of the upper container 1, or on the other side of the pair of sides, and at least one side is formed. , And is an opening for inserting and sliding the root cutting plate 4.

The root cutting board 4 is, as shown in FIG.
Openings 5 of the same diameter are formed at the same intervals so as to correspond to the bottom openings 3 of the upper container 1 and are made of a material which is hard to humus such as a stainless steel plate or a plastic plate. The opening 5 is inserted and arranged in the groove 11 so that the opening 5 is located at the same position as the bottom opening 3 of the upper container 1. As shown in FIG. 4, a grip 4 b is formed at one end of the root cutting plate 4.
And can slide in the groove 11.

Next, a procedure for raising seedlings by the seedling raising apparatus will be described. As shown in FIG. 1, first, the internal space S2
As described above, the upper container 1 is positioned and overlapped with the lower projection 1e of the upper container 1 and the peripheral wall 2a of the lower container 2 on the upper portion of the lower container 2 filled with the soil 7 therein. Subsequently, the root cutting board 4 is inserted into the U-shaped groove 11 so that the position of the opening 5 of the root cutting board 4 matches the position of the bottom opening 3 of the upper container 1. Subsequently, a pot 9 filled with cultivated soil 6 is charged and arranged in each internal space S1 of the upper container 1, and seeds 8 are sown on the upper surface of the cultivated soil 6. At this time, if the seeds 8 are simply placed on the soil, the seeds 8 may be blown off by the wind.

In this state, if the soils 6 and 7 are kept at a suitable level of water, the seeds 8 begin to germinate, and after a lapse of a predetermined period of time, as shown in FIG.
Numeral 1 penetrates through the bottom opening 3 of the upper container 1 and the opening 5 of the root cutting plate 4 to grow into the cultivation soil 7 of the lower container 2.
In this state, the two leaves 23 of the seedling 20 are in a state of performing green photosynthesis due to light germination,
A large number of side roots 2 are provided in a portion of the main root 21 in the upper container 1.
2 has occurred. The side roots 22 are mainly phosphorus absorption roots in the vicinity of the ground surface described above, and the main root tip 21a reaching the cultivated soil 7 of the lower container 2 is similarly connected to the side roots 2a.
4 are generated, as described above, are lateral roots mainly composed of nitrogen-absorbing roots.

When the seedlings are sufficiently grown so that the tip 21a of the main root reaches the soil 7 in the lower container, the root cutting plate 4 is slid to open the root cutting plate 4. The main root 21 is formed by the cutting blade 4a formed on the periphery of
The main root tip 21a in the lower container 2 and the portion in the upper container 1 are cut off. In this state, when the upper container 1 is lifted to separate the upper and lower containers, the main root tip 21a
Is obtained in the upper container 1. Subsequently, the pot 9 is withdrawn from the upper container 1 and sold as a seedling in this state, or taken out of the pot 9 and transplanted to a field.

As described above, the seedling from which the main root tip 21a has been removed is a seedling having a large number of phosphorus-absorbing roots 22.
It is excellent in phosphorus absorption ability, and large and delicious fruits can be obtained from the grown seedlings.

Next, FIG. 6 is a sectional view of a main part showing a modification of the seedling raising apparatus shown in FIG. 1, and a projection 1e projecting downward is formed on the lower peripheral edge of the upper container 1. Is similar to the above-described case in that the upper and lower containers are positioned when they are superposed, but in this example, the peripheral wall portion 2 of the lower container 2
An inner protrusion 2f is formed on the upper inner side of a, and the root cutting board 4 is arranged in a space 12 between the inner protrusion 2f and the bottom surface of the upper container 1. Other configurations are the same as those in FIG. 1, and thus the same configurations are denoted by the same reference numerals, and redundant description will be omitted.

In the above description, the cutting blade 4a is formed on the inner peripheral surface of the opening 5 of the root cutting plate 4. However, since the main root of the seedling itself is soft, a sharp cutting blade is necessarily formed. It is not necessary, and the cutting can be performed by the shearing force of the bottom opening 3 of the upper container 1 and the opening 5 of the root cutting plate 4.

FIG. 7 is a cross-sectional view of a main part of another embodiment of the seedling raising apparatus according to the first method of the present invention.
FIG. 9 is a perspective view of a main part thereof, which differs from the above-described embodiment in the structure of the root cutting member. That is, in the present embodiment, the notch 25 is formed at the top of the pair of peripheral walls 2a facing each other of the lower container 2, and the root cutting cutter 26 is slidably mounted thereon. The root cutting cutter 26 includes a pair of grips 26a mounted on the notch 25 and sliding with the notch 25 as a guide groove.
6a and a cutter 26b made of piano wire stretched between 6a. Then, as in the case described above, the seedling 2
The main root tip 21a of the upper container 1 protrudes from the bottom opening 3 of the upper container 1 by manually sliding the grip portion 26a after the main root tip 21a of the zero container has advanced into the cultivation soil 7 of the lower container 2. The portion 21a is easily cut by a piano wire (cutter) 26b that moves together with the grip portion 26a. After performing this cutting operation, the upper and lower vessels are separated, and the seedling to be transplanted together with the pot 9 is taken out of the upper vessel 1. Since other configurations are the same as those described above, the same configurations are denoted by the same reference numerals, and redundant description will be omitted.

As the cutter 26b, a thin stainless steel plate or a plastic plate can be used in addition to a thin linear member such as the piano wire. In short, the material and shape are not limited as long as the soft main root tip 21a can be easily cut.

Next, FIG. 9 is a sectional view of a main part showing an embodiment of a seedling raising apparatus according to a second system of the present invention, which differs from the above-described system in the presence or absence of root cutting members. That is,
In the present embodiment, the upper container 1 and the lower container 2 are overlapped by positioning the two containers by the above-described protrusion 1e formed on the lower surface of the upper container and the peripheral wall portion 2a of the lower container 2. The seed 8 is sown on the upper surface of the soil 6 of the upper container 1 with.
After germination, as shown in FIG. 5, when the seedlings are raised until the main root tip 21 a has sufficiently advanced into the cultivation soil 7 of the lower container 2,
When the upper container 1 is lifted and separated from the lower container 2 as it is, the tip of the main root comes out of the cultivation soil 7 of the lower container 2 and is exposed from the bottom opening 3 of the upper container 1. In this state, while observing the growing state of the main root tip 21a, the main root tip 21a is cut and removed one by one using an appropriate cutting tool such as scissors, or a knife is attached to the bottom plate 1d of the upper container 1.
Will be cut uniformly along the back side. Like this
In the case of this apparatus, since the above-mentioned root cutting plate 4 is not integrally incorporated in the apparatus, it is necessary to cut the main root tip 21a by an appropriate means. Therefore, the same components are denoted by the same reference numerals, and redundant description will be omitted.

In the above description, the pot 9 filled with the soil 6 is disposed in the internal space S1 of the upper container 1, but the pot 9 is omitted and the soil 6 is directly placed in the space S1. Filling is also possible. In this case, it is also possible to arrange a coarse mesh-like material in the opening 3 so that the cultivation soil 6 does not fall from the bottom opening 3. Since it is necessary to advance the inside of the lower container 2 through 3, it is necessary to avoid closing the opening 3 with pebbles or the like.

[0034]

As described above, according to the present invention, it is possible not only to carry out seedling raising based on the light germination method which has not been used in the past, but also to provide new "delicious fruit" and "increase in yield". This is to provide seedling raising equipment from the viewpoint to the world, and there is great historical significance in seedling raising technology.

In particular, the seedlings raised by the method of the present invention have their roots cut off, so that even after transplanting, growth below the roots, that is, unnecessary elongation to the reduced layer, is suppressed, and It promotes the growth of lateral roots in the vicinity of the surface rich in soil, so that the absorption of the phosphorus component and the balanced absorption of the main nutrients are performed, so that good fruits can be obtained. Become.

Furthermore, after transplanting the seedlings obtained by the method of the present invention, if a traditional phosphate-based natural fertilizer such as chicken manure or pig manure is used as a fertilizer, soil damage caused by using a chemical fertilizer may be reduced. The effect of the present invention, which does not occur, and which is efficiently absorbed by the grown phosphorus absorption roots near the ground surface, whereby a safe and high-quality crop can be stably obtained. It encourages a shift, and its social effects are immeasurable.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part showing a first embodiment of a seedling raising apparatus according to the present invention.

FIG. 2 is a plan view of a main part of FIG. 1;

FIG. 3 is a side view of the upper container of FIG. 1;

FIG. 4 is a plan view of a main part of a root cutting board used in FIG. 1;

FIG. 5 is a conceptual cross-sectional view of an essential part showing an example of a growth state of a young seedling by the seedling raising apparatus of FIG. 1;

FIG. 6 is a sectional view of a main part showing a modified example of the seedling raising apparatus of FIG. 1;

FIG. 7 is a sectional view of a main part showing a modified example of the seedling raising apparatus of FIG. 1;

FIG. 8 is a perspective view of a main part of FIG. 7;

FIG. 9 is a sectional view of a main part showing an embodiment of the second system of the present invention.

FIG. 10 is a conceptual diagram showing a germination state by light germination used in the present invention.

FIG. 11 is a conceptual diagram showing a germination state by conventional dark germination.

[Explanation of symbols]

 Reference Signs List 1 upper container 1a upper container peripheral wall portion 1b upper container vertical partition wall 1c upper container horizontal partition wall 1d upper container bottom plate 1e upper container peripheral projection portion 1f upper container inner projection portion 2 lower container 2a lower container peripheral wall Part 2b Vertical partition wall of lower container 2c Horizontal partition wall of lower container 2d Bottom plate of lower container 2f Inner projection of lower container 3 Bottom opening of upper container 4 Root cutting plate 4a Cutting blade of root cutting plate 4b Gripping root cutting plate Part 5 Opening of root cutting plate 6,7 Cultivation soil 8 Seeds 9 Pot 20 Seedling 21 Main root 21a Main root tip 22 Phosphorus absorption root 24 Nitrogen absorption root 25 Guide groove 26 Root cutting member 26a Gripping part of root cutting member 26b Root cutting member Cutting blade

Continuing from the front page (72) Inventor Yukiji Konishi 265 Tsunemoto, Hirano-cho, Nishi-ku, Kobe-shi, Hyogo Pref. (72) Inventor Kazuo Hirata F-term (reference) 2B022 AA01 DA19 2B027 NB01 ND03 NE09 RA07 RD02 SA09 SA29 SB01 SB12 SC08 SD02 SD07 TA25 UB01

Claims (14)

[Claims] A seed (8) which is sown on the surface of a cultivated soil (6).
A method of raising seedlings for germination of seedlings and initial growth of seedlings (20), comprising an opening (3) at the bottom and an inner space (S1) filled with cultivated soil (6). ), A lower container (2) filled with cultivated soil (7) in an internal space (S2) is overlapped, and a predetermined seed (8) is sown on the cultivated surface in the upper container (1); The tip (21a) of the main root (21) of the seedling germinated from the seed (8) sown is passed through the bottom opening (3) of the upper container (1) and is cultivated in the soil (7) of the lower container (2). After raising the seedlings to the end, the upper container (1) and the lower container (2) are separated, and the tip of the main root (21a) in the lower container (1) is cut off. Seedling raising method. 2. Separating the upper container (1) and the lower container (2) so that the tip of the main root (21a) in the lower container (2) can be cultivated in the soil (7) in the lower container (2). 2) The method according to claim 1, wherein the main root tip (21a) protruding from the bottom opening (3) of the upper container (1) is cut off from the inside. 3. The internal space (S1) of the upper container (1).
The method according to claim 1 or 2, wherein a seedling pot (9) filled with cultivation soil (6) is charged therein. 4. Seeding (8) by sowing on the surface of cultivation soil (6)
A seedling raising device for germination of seedlings and initial growth of seedlings (20), comprising an upper container (1) having an opening (3) at the bottom and filling a soil (6) in an internal space (S1). The lower part of the upper container (1) is polymerized and has an internal space (S
2) A lower container (2) in which the cultivation soil (7) is filled, and a slidably disposed between a bottom plate (1d) of the upper container (1) and an upper surface of the lower container (2). A root cutting member (4, 26); a tip of a main root (21) of a seedling (20) germinated from a seed (8) sown on a surface of a cultivated soil (6) in the upper container (1). (21a) is a bottom opening (3) of the upper container (1).
After raising the seedlings into the cultivation soil (7) of the lower container (2), the root cutting members (4, 26) are slid to project from the bottom opening (3) of the upper container (1). A seedling raising device characterized in that the main root tip (21a) is cut off. 5. The root cutting member is slidably disposed between a bottom plate (1d) of the upper container (1) and an upper surface of the lower container (2), and has a bottom opening (5) of the upper container. A root cutting board (4) having an opening (5) at a position corresponding to 3), a seedling (20) germinated from a seed (8) sown on a surface of a cultivated soil (6) in the upper container (1) The top end (21a) of the main root (21) of the container is located at the bottom opening (3) of the upper container (1).
And after raising the seedlings through the opening (5) of the root cutting board (4) into the cultivation soil (7) of the lower vessel (2), the root cutting board (4) is slid and the root cutting is performed. At the opening (5) of the plate, the main root tip (21) projecting from the bottom opening
5. The seedling raising device according to claim 4, wherein a) is cut. 6. The seedling raising device according to claim 5, wherein a cutting blade (4a) is formed at a periphery of the opening (5) of the root cutting board (4). 7. A projection (1e) protruding downward is formed on a peripheral edge of a lower surface of a bottom plate (1d) of the upper container (1),
An inner projection (1f) projecting inward is formed at a lower end of the projection (1e), and the inner projection (1f) and the bottom plate (1d) form a root having a U-shaped cross section at the peripheral edge of the bottom plate. A cutting plate holding groove (11) is formed, the root cutting plate (4) is inserted into the holding groove (11), and the root cutting plate (4) is moved along the root cutting plate holding groove (11). The seedling raising device according to claim 5, which is slidably held. 8. An inner projection (2f) protruding inward on an upper inner peripheral edge of a peripheral wall (2a) of the lower container (2).
And the inner projection (2f) and the upper container (1) are formed.
The root cutting plate (4) is inserted into a space between the bottom plate (1d) and the root cutting plate (4) so as to be slidable by the inner protrusion (2f) of the lower container (2). The seedling raising device according to claim 5 or 6, which is held. 9. A linear or sheet-shaped root cutting member slidably disposed between a bottom plate (1d) of the upper container (1) and an upper surface of the lower container (2). Cutter (2
6), wherein the tip (21a) of the main root of the seedling (20) germinated from the seed (8) sown on the surface of the soil (6) in the upper container (1) is placed in the upper container (1). After raising the seedlings through the bottom opening (3) to the cultivation soil (7) of the lower container (2), the cutter (26) is slid to remove the tip of the main root (21a) protruding from the bottom opening. The seedling raising device according to claim 4, wherein the seedling raising device is cut. 10. The root cutting cutter (26) includes a pair of gripping portions (26a) protrudingly arranged on opposite sides of an overlapping portion between the upper container (1) and the lower container (2), and the gripping portions. It consists of a linear or thin plate-like cutter (26b) held between them, and the grip portion (26a) is formed on the lower end surface of the upper container (1) or the upper end surface of the lower container (2). The seedling raising device according to claim 9, wherein the device is slidably mounted in the guide groove (25). 11. A seedling raising apparatus for sowing seeds on the surface of a cultivation soil (6), germinating seeds (8), and performing initial growth of seedlings (20). Upper container (1) for filling soil (6) in space (S1)
And polymerized in the lower part of the upper container (1), and the inner space (S
2) a lower container (2) filled with cultivation soil (7), and seeds (8) sown on the cultivation surface in the upper container (1).
The tip (21a) of the main root (21) of the seedling that has germinated more
After raising the seedlings through the bottom opening (3) of the upper container (1) to the cultivation (7) of the lower container (2), the upper container (1) and the lower container (2) are separated. The main root tip (21a) is pulled out from the soil (7) in the lower vessel (2), and thereafter, the main root tip () protrudes from the bottom opening (3) of the upper vessel (1). A seedling raising device characterized in that 21a) can be cut off. 12. The internal space (S) of the upper container (1).
The seedling raising device according to any one of claims 4 to 11, wherein a seedling raising pot (9) filled with cultivation soil (6) is inserted in 1). 13. The upper container (1) has a plurality of vertical partition walls (1b) orthogonal to each other in a substantially rectangular peripheral wall portion (1a).
And a plurality of internal spaces (S1) by the horizontal partition wall (1c).
The lower container (2) is provided with a plurality of vertical containers arranged in a substantially rectangular peripheral wall portion (2a) at positions corresponding to the vertical partition walls and the horizontal partition walls of the upper container (1). The seedling raising apparatus according to any one of claims 4 to 12, wherein the partition wall and the horizontal partition wall define a plurality of lower spaces (S2). 14. A projection (1e) formed so as to protrude downward at a peripheral edge of a lower surface of a bottom plate (1d) of the upper container (1).
14. The positioning of the upper container (1) and the lower container (2) at the time of polymerization by fitting the lower container (2) with the peripheral wall portion (2a) of the lower container (2). A seedling raising device according to any one of the above.