JP2002291347A - Method for raising rush seedling and method for cultivating rush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To readily carry out dividing operation and stock inserting operation of rush seedlings. SOLUTION: This method for raising the rush seedlings comprises continuously carrying out a step of dividing the rush seedlings into a plurality of divided rush seedlings and raising the divided rush seedlings in a seedling raising pot a plurality of times. The method for cultivating the rush comprises continuously carrying out the step of dividing the rush seedlings into a plurality of divided rush seedlings, raising the divided rush seedlings in the seedling raising pot a plurality of times, then transplanting the rush seedlings in the seedling raising pot to a field and cultivating the rush seedlings.

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 a rush seedling in a seedling pot and a method for cultivating a rush seedling.

[0002]

In the conventional method of cultivating grass seedlings by hand planting, a conventional method of cultivating grass seedlings to be cultivated in a field in June is digged up, the parent strain is divided, and the seedlings to be divided are classified. Cultivate again to increase seedlings by transplanting them again to the field. Then, the seedlings to be cultivated are dug up again in October, the parent strain is divided, and the seedlings to be divided are transplanted to a field and cultivated and harvested from July to early August of the following year for harvesting. In June, before harvesting, rush seedlings to be harvested next year are dug up as described first, and the saplings to be divided are transplanted again to the field and cultivated.

According to the conventional method of cultivating grass seedlings by hand planting, it is necessary to dig up the seedlings twice from the field before harvesting, plant them by dividing them. And the roots of the rush seedlings were hard and intertwined in the soil of the field, and the work of digging and digging was difficult, and the work of separating these complicatedly intertwined roots was very difficult. . Furthermore, the work of planting in the field by hand was obviously a heavy labor.

On the other hand, instead of the conventional farming method of cultivating grass seedlings by hand planting, a method of raising seedlings once in a pot seedling box (a seedling tray having a large number of seedling pots) and mechanically transplanting them is conceivable. As a method of mechanical transplantation using the pot nursery box, a grass seedling to be cultivated in a field is dug up in April, the root soil is washed off, and the parent strain is removed with scissors or the like.
The stems of the book are cut into one plant (unnecessary long roots are difficult to cut into the pot, so they are cut off), and the seedlings to be separated are inserted into each pot of the pot nursery box and cultivated. Then, the cultivated grass seedlings in the pot nursery box are mechanically transplanted to a field in June and cultivated to increase the number of seedlings. And we dig up the seedlings we want to grow again in August,
This parent strain is divided again so that two or three stems become one strain, and the seedlings to be divided are inserted into each pot of a pot nursery box and cultivated. Then, the cultivated grass seedlings in the pot nursery box are mechanically transplanted to a field in October, and cultivated and harvested from July to early August of the following year for harvesting. In April, before harvesting, rushes to be harvested next year are dug up as described first, and the sprouts to be divided are cultivated by inserting them into each pot of a pot nursery box.

According to the method of mechanical transplantation using the pot nursery box, the worker is released from heavy labor by hand planting. There is, of course, the work of inserting the divided seedlings into each pot of the pot nursery box this time, and the seedlings for harvest are cultivated in the pot nursery box. Sometimes 25,000 for 10a
Since 0 to 27,000 shares are required, the worker needs 10a
In the field cultivation, the plant was divided into 25,000 to 27,000 roots intricately intertwined with each other, and 25,000 to 27,000 plants were inserted into the pot nursery box. Must be done. If the seedlings that you want to dig are not inserted and raised in pots early, the seedlings will weaken and die, so this sorting and stocking work must be done immediately. The work was carried out continuously throughout the day as well as during the day, which was extremely harsh work. In addition, the work of stocking the seedlings to be digged and raised from the field is complicated in that the roots of the seedlings are intertwined, and it is extremely difficult to unravel the roots. Since it was not possible, the division work had to be done carefully, which was a difficult task. Also, needless to say, the stock splitting and stock inserting work to be performed first in April is a difficult work as in August.

[0006] In any of the above cultivation methods, as shown in Fig. 42, one rush seedling is divided (branched from the joint of the stem close to its root to produce a new stem), and the number of stems is increased. At this time, there is a habit that the stems increase by dividing at about 45 degrees from the horizontal, so that when it is time for the tillers to advance and harvest the grass, as shown in FIG. 43, The first stalk of the rush was longer in the side view, and the outer stalk was shorter (the stalk of the rush as a whole was longer in the center and shorter in the surroundings). Was growing). If hay is harvested in this state (cutting the stalks near the field and harvesting), the only long-quality hay that is required in the market is the central part, and the surrounding stalks are short and will not become products. It was only a second-class product. Therefore, the yield was low and the quality was not very good.

[0007]

Means for Solving the Problems In order to solve the above-mentioned problems, an invention according to claim 1 is a method for raising grass seedlings in which the step of dividing a grass seedling into a plurality and raising seedlings in a seedling pot is performed a plurality of times continuously. The invention according to claim 2 is that the root portion of the seedling to be raised in the seedling pot is divided into a plurality of parts by a cutting tool such as a cutter 300 and the divided root portion is inserted into the seedling pot. 1. The method according to the method described in 1.
According to a third aspect of the present invention, there is provided the method for raising sprouts according to the first or second aspect, wherein the seedling raising pot is a groove-shaped pot having a narrow width. The method of claim 1 or claim 2 or claim 3, wherein the cultivation soil is put into the seedling pot after being inserted into the pot. The method of claim 1 or claim 2 or claim 3, wherein the root portion after division is inserted into the culture medium in the seedling raising pot while the culture medium containing A method of cultivating grasses by dividing the grass seedlings into a plurality of seedlings and raising the seedlings in the seedling pot a plurality of times in succession, and then transplanting the grass seedlings in the seedling raising pot to the field for cultivation.

[0008]

The invention according to claim 1 is a method for raising grass seedlings in which the step of growing a seedling in a pot by dividing the grass seedling into a plurality of seedlings is performed a plurality of times in succession. Even without having to repeat the heavy work of digging rush seedlings from the field, washing the roots, unraveling the complicated entangled roots and dividing so that the new shoots are not damaged
Once the seedlings are raised in the seedling pot, the splitting operation is completed only by taking out the seedlings to be raised from the seedling pot and dividing the root thereof, and the work of inserting the seedlings into the seedling pot is greatly labor-saving (short term). The seedling can be inserted into the seedling raising pot in a short time), and the problem of the conventional example can be solved.

According to a second aspect of the present invention, the root portion of the seedling to be raised in the seedling pot is divided into a plurality of parts by a cutting tool such as a cutter 300, and the divided root portion is inserted into the seedling pot. Claim 1.
In addition to the effects of the invention described, the root of the seedlings to be raised in the seedling pot is divided into a plurality of pieces by a cutting tool such as a cutter 300, and the divided roots are simply inserted into the seedling pot, The operation of inserting the seedlings into the seedling pot is also facilitated, and the efficient seedling insertion operation can be performed.

[0010] In addition, when seedling is inserted by a machine,
Seedlings whose roots have been divided by a cutting tool have substantially the same shape of the roots, and therefore have good machine adaptability, so that the seedlings can be easily inserted by a machine. According to a third aspect of the present invention, the method of the first or second aspect is the seedling raising method, wherein the pot is a groove-shaped pot having a narrow width. In addition to the effects, the roots of the seedlings to be raised in the seedling pot are formed in a narrow band, so that the operation of dividing into multiple pieces with a cutting tool such as the cutter 300 can be easily performed, and furthermore, the efficiency is improved. Seeding can be done.

The roots of the seedlings to be raised in the seedling raising pot are narrow, band-shaped roots, so that the roots of the seedlings have good machine adaptability, and the configuration for automatically cutting the roots by a machine is easy, and Development of a cutting device and the like can be easily performed. The invention of claim 4 is the method of claim 1 or claim 2 or claim 3 in which the cultivated soil is put into the seedling raising pot after inserting the divided root into the seedling raising pot. In addition to the effects of the invention described in claim 1, claim 2, or claim 3, when the root portion after splitting is inserted into a seedling raising pot, the root portion of the cut seedling has a divided pot-shaped soil, and Since the seedlings are stably accommodated in the pot, the work of putting the cultivated soil into the seedling raising pot P becomes easy, and efficient work can be performed.

According to a fifth aspect of the present invention, the root after division is inserted into the cultivation soil in the seedling raising pot in a state in which the soil containing muddy water is put in the seedling raising pot. Since the method according to the present invention is a method for raising seedlings according to the third aspect, in addition to the effects of the invention according to the first, second or third aspect, the method can be applied to a seedling raising pot containing muddy soil containing water. When the root part after division is inserted, the root part of the inserted seedling has the divided pot-shaped soil, so that the seedling can stably fit in the seedling raising pot, and efficient work can be performed. still,
As for the cultivation soil containing water in the mud state in the seedling raising pot, the posture of the seedling may be more stable in a slightly hard mud state.

According to a sixth aspect of the present invention, there is provided a cultivation method for cultivating grass seedlings in a seedling pot after the step of dividing the grass seedling into a plurality of pieces and raising the seedlings in a seedling pot is performed a plurality of times in succession. Since it is a method, it is possible to easily and efficiently obtain a large number of grass seedlings necessary for transplanting grass seedlings in a field for harvesting, and the work of cultivating grass is greatly labor-saving. Thus, the problem of the conventional example can be solved.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment shown in the drawings will be described. First, seedling transplanter 1 for rush
Will be described. A six-row planting portion 4 is attached to the rear side of the riding traveling vehicle body 2 via a link device 3 so as to be able to move up and down.
In addition, a fertilizer hopper 5a of the side-strip fertilizer 5 and a fertilizer feeding device 5 for feeding fertilizer for each strip are provided at a rear portion of the traveling vehicle body 2.
b ... are arranged.

The traveling vehicle body 2 includes a pair of left and right steerable front wheels 6 and 6 that are driven and rotated, and a pair of right and left rear wheels 7 and 6 that are driven and rotated.
7, a transmission case 9 on the front side of the frame 8,
The engine E is mounted on the rear side, and the rotational power of the engine E is temporarily transmitted to the hydraulic pump mounted on the upper part of the transmission case 9 by the belt transmission 10, and from there,
The transmission is transmitted into the transmission case 9 by a belt transmission 11 capable of continuously variable transmission operation. The power shifted by the transmission in the transmission case 9 is transmitted to the front wheels 6, 6 and the rear wheels 7, 7, and the transmission shaft 9
a, the intermediate gear case 9b, and the planting portion 4 via the transmission shaft 9c.
It is transmitted to. In the drawing, reference numeral 12 denotes a steering wheel for steering the front wheels 6 and 6, reference numeral 13 denotes a seat on which a pilot sits, and reference numeral 14 denotes a seat.
Is a step floor for the operator to move on the traveling vehicle body, 15 is a spare seedling mounting table on which spare seedlings are placed, and 16 is a drawing marker for drawing the course of the traveling vehicle body 2 in the next step to the field scene.

The link device 3 includes a frame 8 of the traveling vehicle body 2.
The upper link 21 and the upper link 21 are attached to the link base 20 fixed to the rear end.
1 and the lower links 22, 22 are rotatably mounted,
A connection frame 23 is connected to the rear ends of these upper and lower links. The front end of a rolling shaft 24 rotatably supported on the planting portion 4 side is inserted and connected to the lower end of the connection frame 23. Thereby, the planting part 4 is mounted in a rolling manner in the traveling direction. Further, a hydraulic cylinder 26 for driving the link device 3 is provided with the base side attached to the frame 8 and the piston rod side thereof is integrally fixed downward from the bases of the upper links 21 and 21 integrally. Is connected via a spring to the tip of the. When the hydraulic cylinder 26 expands and contracts, the upper and lower links 21, 21, 22, 22 rotate around the support shaft on the link base 20 side, and the planting section 4 moves up and down.

At the upper part of the planting section 4, three sets of upper and lower two-stage seedling platforms 30 inclined downward are provided in parallel on the left and right, and a seedling tray transport path 31 is provided at the rear end of each set of seedling platforms. ... are connected. Each seedling tray transport path 31 transports seedling trays supplied one by one from the seedling mounting table 30 downward in the first half, gradually changes the transport direction in the middle, and transports upward in the second half. Is formed. A seedling raising tray feeder 32 for transferring the seedling raising tray along the seedling raising tray transfer path 31 in correspondence with the seedling raising tray transfer path 31;
A seedling take-out device 33 that takes out seedlings from the seedling tray being conveyed at the seedling take-out position Q in the seedling taking-out tray conveyance path 31, a seedling carrying device 34 that carries out the taken-out seedlings along a locus that draws an arc toward the lower front, Seedling removal device 3 for removing seedlings from the seedling transfer device
5; a seedling lateral feeder 36 for laterally feeding the extracted one row of seedlings halfway to the left and right sides; and a seedling planting device for taking the seedlings conveyed by the seedling lateral feeder and planting them in a field. 37, 37 are provided. At the end of the nursery tray transport path 31, there is provided an empty box housing frame 38 capable of accommodating a plurality of empty nursery trays from which seedlings have been taken out at the seedling removal position Q in a vertically stacked state. Have been.

The seedling transplanter 1 uses seedlings grown on a plastic flexible seedling tray (seed box) T in which seedling pots P are arranged at predetermined intervals in the vertical and horizontal directions. The seedling raising tray T is formed such that openings of a plurality of seedling raising pots P are connected to each other and the bottom side is independent. Further, square holes Tb for feeding seedling boxes on which feed claws 60, 60 to be described later act, are provided at left and right edge portions Ta along the longitudinal direction of the seedling raising tray T in accordance with the longitudinal spacing of the seedling raising pot P. ing. At the bottom of each seedling raising pot P, there is provided a cut Pc through which seedling pushing pins 72 for removing the seedling from the seedling raising pot P can enter from the bottom side. Tc is a wide interval portion provided at the center in the left and right (transverse directions) toward the longitudinal direction. The seedlings are raised by filling the soil in each seedling pot P, inserting a grass seedling.

The vertical and horizontal pitches of the seedling raising pot P are set to 2 cm in consideration of the raising of seedlings, and the length of the seedling raising tray T in the short direction is about 19 cm. The seedling raising tray T has a configuration in which eight seedling raising pots P are provided in the lateral direction. The inner diameter of the seedling raising pot P is 16 mm in inner diameter at the upper mouth, 13 mm in inner diameter at the bottom, and 24 mm in height.
It is a small pot of about 4 cc with a capacity of 7 mm.

The planting section frame which supports the seedling tray transport path 31 and the respective devices and has a built-in transmission mechanism for these devices is mounted on the seedling tray transport path 31.
A ladder-shaped main frame 42 is formed integrally with the drive cases 41 arranged inside the characters, and four planting transmission frames 45 extend rearward from the lower left and right horizontal portions. I have. The bases of the seedling mounting support frames 46 are fixed to the upper surface of the drive cases 41 to support the upper and lower two stages of the seedling mountings 30. The rolling shaft 24 is rotatably inserted into a bearing case 50 attached to a planting portion support bracket 48 fixed to the left and right central portions of the lower horizontal portion of the main frame 40. This allows
The entire planting portion is supported in a freely rolling manner.

A center float 52 is provided below the planting section 4.
And a pair of left and right side floats 53, 53. During the planting operation, these floats slide while leveling the field scene. Each of the floats 52, 53, 53 is provided with a groove-forming device 54 for forming a fertilizing groove in a field scene near the seedling-planting position of each line, and a rear cross-section in plan view is provided on the rear side. U-shaped fertilization guides 5c are attached, and fertilizer hoses 5d for transferring fertilizer fed from the fertilizer feeding device 5b are connected to each of the strips.

The center float 52 is also a sensor for detecting irregularities in the field scene. During planting work, the vertical movement of the front end of the center float 52 is detected by the vertical movement detecting mechanism 55, and the hydraulic cylinder is operated in accordance with the detection result. The planting depth of the seedlings is always kept constant by switching the control valve (3) to move the planting part 4 up and down. In addition, each float 5
2, 53, 53 are attached to float support arms 58 which rotate integrally with the planting depth adjusting shaft 57 in the left-right direction, and rotate the planting depth adjusting shaft 57 to reduce the mounting height of the float. By changing, the planting depth of seedlings is adjusted.

Next, the configuration of each section of the planting section 4 will be described. As shown in FIGS. 5 to 8, the seedling mounting table 30 includes a bottom plate 130 that supports the bottom of the pot of the seedling raising tray T from below, fences 131, 131 rising from both left and right ends of the bottom plate, and the like. Is facing forward and backward 2
There is a space that can be placed in series one by one. The nursery tray on the table slides backwards by its own weight. Note that the lateral width of the seedling mounting table 30 is larger than 19 cm. At the rear end of the seedling mounting table 30, a pair of left and right automatic supply rollers 132 and 133 for sending the seedling tray to the seedling tray transport path 31 with the left and right edges of the seedling tray sandwiched from above and below are provided. . Lower roller 132
Is a drive roller driven by the motor 134, and the upper roller 133 is a pressing roller urged toward the drive roller. A plurality of switches (not shown) for detecting the presence or absence of a seedling tray are provided at appropriate places on the seedling mounting table 30 and the seedling tray transport path 31, and the motor 134 is automatically controlled according to the detection result of the switch, and The seedling raising trays are sent out one by one from the seedling mounting table 30 to the seedling raising tray transport path 31 at appropriate timing.

On the rear upper surface of the fence 131, a holding plate 135 for preventing the raising of the seedling raising tray is provided on the rear side of the fence so that the left and right edges on the seedling table are guided between the automatic supply rollers 132 and 133. Are also installed in a state of projecting inward. The front part of the bottom plate 130 is shown in FIG.
As shown in (1), the bottom plate is formed in an arc shape that is higher on both left and right sides. For this reason, the seedling tray T
When replenishing the seedlings, the seedling raising tray is curved upward, the leaves of the seedlings stored in each seedling raising pot are inclined to the left and right center sides, and the leaves on the left and right outer sides are the seedling raising tray T and the holding plate 13.
5 is prevented.

The nursery tray feeding device 32 has a seedling removal position Q
And a pair of right and left feed claws 60, 6 at the same height.
0 and locking claws 61, 61. Feeding claw 60, 6
0 reciprocates up and down along the seedling tray transport path 31,
When moving down, it engages with the square holes formed at the same pitch as the seedling pot at the left and right edges of the seedling raising tray, and when moving up, it disengages from the square hole Tb and moves over to the next square hole Tb. Works as follows. The locking claws 61, 61
When the feed claws 60, 60 move downward, they are disengaged from the square holes, and when the feed claws 60, 60 move upward, they engage with the square holes Tb to operate to support the seedling raising tray. By the operation of the feed claws 60, 60 and the locking claws 61, 61, the seedling tray is intermittently fed along the seedling tray transport path 31 by one pitch of the seedling pot arrangement. In addition, on the upper side of the feeding claws 60, 60 and the locking claws 61, 61, the locking claws 61, 61 protrude into the seedling tray transport path in conjunction with the exit from the square holes of the preceding seedling raising tray, and are conveyed. Blocking claws 63, 63 for temporarily receiving a subsequent seedling raising tray that slides down the road 31 are provided.

The seedling take-out device 33 is provided with seedling pushing pins 7 arranged in the same number and pitch with respect to the seedling pots in the lateral direction of the seedling raising tray.
2 are slide shafts 7 slidably supported in the front-rear direction.
3, 73 are provided so as to operate integrally. When the feeding operation of the feeding claws 60, 60 is completed and the seedling raising tray is supported by the locking claws 61, 61, the slide shafts 73, 7 are provided.
3 are slid rearward, and the seedling pushing pins 72 are inserted into the seedling pots for one row at the seedling removal position Q from the bottom side to push the seedlings backward. After that, before the feeding operation of the feeding claws 60 starts, the slide shafts 73 return to the original positions and the seedling pushing pins 72 are retracted.

The seedling carrying device 34 is a seedling holding body 83a, which is open rearward and is cut out at the top and cut out from the rear, as a seedling holding body for holding the floor portion of the seedlings pushed out of the seedling raising pot of the seedling raising tray. Are provided with seedling holders 83 formed at positions corresponding to the seedling pushing pins 72. Seedling holder 83
Are a pair of right and left swing links 84, 85, 84, 85
Are connected as follows. That is, the attachment plate 8 is attached to an extension extending rearward of the connecting link 86 connecting the rear ends of the swing links 84 and 85 which are parallel links.
And a support rod 88 provided between the lower ends of the left and right mounting plates 87, 87. The seedling holder 8 is attached to the front end of a support 89 fixed to the left and right central portions of the support rod.
3 are supported. In this way, by supporting the left and right central portions of the seedling holder 83 with the support 89 extending from the rear, the interference between the support member of the seedling holder 83 and the leaf retainers 100, 100 described below is avoided.

Due to the swinging of the swinging links 84, 85, 85, 85, the seedling holder 83 reciprocates in a circular locus while maintaining a constant posture. When the seedling holder 83 is located at the seedling receiving position A at the upper end of the locus, the feed claws 60, 60 are operated to feed the seedling raising tray by one pitch, and the foliage of one horizontal row of seedlings located at the seedling removal position Q. Is the seedling holder 83
Of each seedling from above. Then, the seedling push-out pins 72 project and operate to push out the floor portion of the seedling from the seedling raising tray and push it into the seedling holding portion of the seedling holder 83. The seedling holder 83 having received the seedlings moves to the seedling opening position B at the lower end of the locus, where the seedlings are extracted by the seedling extracting device 35.

A seedling separating device for separating the root portions of the shoots of the seedling N into the seedling holding portions 83a of the seedling holder 83 so that the stems of the adjacent seedlings do not become entangled with each other when feeding the seedling tray. A seedling support 150 is provided from below so as to prevent the tip of the leaf of each seedling from hanging down.

The seedling separating device 150 has a separating plate 151 at its front end.
Are arranged in a comb shape in a plan view, and are separated into support members 154 attached to the rear ends of support arms 153 and 153 fixed to the machine frame of the seedling tray transport path 31. The rear ends of the rods 152 are supported.
The separation plates 151 and the separation rods 152 are located at left and right positions corresponding to the interval between the seedling holding portions of the seedling holder 83. The separating plate 151 is connected to the seedling holder 8 at the seedling receiving position A.
3 is located on the upper side of the main body portion 151a having a substantially triangular shape in side view.
And a hanging part 151b extending from the main body to the rear lower side of the seedling holder 83. The long leaves of the seedlings are separated by a separation rod 152, and the short leaves and buds are separated by a separation plate 151.
Separated by Also, the hanging portion 151b of the separation plate
Extends to the rear lower side of the seedling holder 83, the seedlings are separated until the seedlings completely enter the seedling holding portion 83a of the seedling holder 83, and the seedlings are securely prevented from being entangled with each other.

The seedling supporting member 160 is formed by bending a rod material so that the action portion is horizontal in the left and right direction. The seedling supporting member mounting shaft is provided at the rear ends of the support arms 153 and 153 so as to be rotatable. 161 are integrally attached. The seedling support fixture mounting shaft 161 includes an arm 162, a rod 163,
The arm 164 is interlocked with a rotation shaft 165 provided above the slide shaft 73 via the arm 164. The rotation shaft 165 is normally and reversely rotated according to the forward and backward sliding of the slide shaft 73 by the action of the pressing plate 166 and the return spring 167 which come into contact with the rear end of the slide shaft 73. As a result, the seedling support 160 is normally in the operating position where the action portion supports the leaves of the seedling from below (indicated by the solid line in FIG. 10), but the seedling push-out pins 72... Occasionally, the working part rotates to a non-working position (shown by a chain line in the figure) where the leaves of the seedling are not supported from below.
When the seedling pushing pins 72 are retracted, the seedling support 160 returns to the operating position.

Until the seedling push-out pins 72 push the seedlings, the seedling supporting member 160 supports the leaf stems of the seedlings from below. The posture is properly maintained. When the seedling pushing pins 72 push out the seedlings, the seedling support 160 moves to the non-operating position, so that the seedling pushing out does not hinder the seedling pushing and the floor portion of the seedlings is easily pushed into the seedling holding portion of the seedling holder 83. Furthermore, since the leaves of the seedlings hang down while the seedling support 160 is in the non-operating position, the leaves of the seedlings are below the seedling support 160 even when the seedling support 160 returns to the operating position. For this reason, when the seedling holder 83 moves downward to transport the seedlings,
With 0, the seedlings are not lifted up and the posture of the seedlings is not disturbed.

The seedling removal device 35 is provided with a comb-shaped seedling removal tool 90 that can pass through the seedling holding portion of the seedling holder 83 located at the seedling opening position B back and forth so as to rotate up and down. When the 83 moves to the lower end of the movement locus, the seedling removal tool 90 receives the seedlings held in the respective seedling holding portions of the seedling holder 83, passes only the seedling holder 83, and extracts the seedlings (FIG. 15A). The pulling tool 90 is rotated downward, and the projections 90a projecting from the rear surface of the seedling pulling tool are knocked down onto the seedling transport belts 110, 110 of the seedling lateral feeding device 36 (FIG. 15).
b).

As shown in FIGS. 12 and 13, the seedling removing tool 90 is integrally mounted on a left-right rotating seedling removing tool mounting shaft 91 provided rotatably. A roller 93 is rotatably supported by a rotating arm 92 fixed to the seedling removal tool mounting shaft 91, and the roller 93 is not shown so as to abut the cam surface of a seedling hitting cam 95 attached to a seedling hitting cam shaft 94. The rotating arm 92 is biased by a spring. When the seedling hitting cam 95 rotates, the seedling removal tool 90 quickly rotates downward when the roller 93 fits into the concave portion of the cam, and operates so as to immediately return to the original position.

As shown in FIGS. 12 and 14, the mounting arms 101 of the leaf pressers 100 are rotatably fitted to the seedling extractor mounting shaft 91. The two mounting arms 101 are connected to each other by a connecting shaft 101 so as to rotate integrally.
a. The leaf retainer 100 has an L-shape in plan view having a left-right acting portion 100a, and the leaf 100 of the seedling held by the seedling holder 83 located at the seedling opening position B is positioned below the acting portion 100a. It is configured to rotate up and down so as to press against the side (the seedling transport belt side).

The operation mechanism of the leaf presser 100 is the seedling removal tool 9.
0, a roller 103 is rotatably supported by a roller support arm 102 that rotates integrally with the right mounting arm 101, and the roller 103 is provided on a seedling presser cam 105 attached to a seedling hitting cam shaft 94. The roller support arm 102 is moved by a spring (not shown) so as to come into contact with the cam surface.
Is energizing. Roller 1 on the large diameter part of seedling holding cam 105
14 is in contact with the leaf presser 100 at the position indicated by the solid line in FIG.
14 comes into contact, the leaf presser 100 rotates to the position indicated by the chain line in FIG. The seedling holding cam 105 has two small diameter parts.
The seedling removal tool 90 is rotated to the position indicated by the solid line twice immediately before and immediately after knocking down the seedling.

When the seedling holder 83 has moved to the seedling opening position B, the leaf holder 100 is rotated downward to press the leaf stems of the seedlings N... Against the seedling conveying belts 110, 110 (FIG. 15A). . In this state, the seedlings N... Held in the respective seedling holding portions of the seedling holder 83 are extracted by the seedling extraction tool 90. Next, the seedling removal tool 90 is rotated downward, and the extracted seedlings N are knocked down onto the seedling transport belts 110 (FIG. 15B). After that, although the seedling holder 83 returns to the seedling receiving position A side, the seedling N may be brought back without completely extracting the seedling from the seedling holding unit (FIG. 15C). However, when the seedling removal tool 90 pivots downward for the second time, the seedling removal tool 90 presses the seedling N that has been brought back from above, thereby separating the seedling from the seedling holder 83 and causing the seedling transport belt 110 to rotate. Supply on top. Note that the second downward movement of the seedling removing tool 90 is preferably performed at a higher speed than the first downward movement.

The lateral seedling transporting device 36 moves the pair of right and left seedling transport belts 110, each of which has a plurality of projections 110a for positioning seedlings formed on the outer periphery, so that the upper lateral feeding action portion moves outward. It is provided symmetrically. The seedling transport belt 110 is hung between an outer driving roller 111 and an inner driven roller 112.

At the space between the pair of seedling conveying belts 110, 110, a mountain-shaped seedling partitioning plate 115 is provided. The seedling holder support 89 has a U-shaped cross section that is long in the vertical direction and open downward.
When the seedling 3 is at the seedling opening position B, the upper part of the seedling partition plate 115 enters the lower part of the seedling holder support 89. As a result, the two central seedlings pulled out from the seedling holder 83 can be transferred to the seedling transport belt 11 without entanglement of the leaves.
It is surely guided to 0,110.

Further, behind the seedling conveying belts 110, 110, a leaf separating comb 116 is operably provided so as to protrude above the upper surface of the seedling conveying belt and to retract. The leaf separating comb 116 is operated by an operating mechanism including a combination of a cam 117 and a roller 118. When the seedling holder 83 moves to the seedling opening position B, the leaf separating comb 116 projects above the upper surface of the seedling transport belt, and the leaves separating comb 116 is combed so that the leaves of each seedling are separated. In this state, the seedlings are extracted from the seedling holder 83 and dropped on the seedling transport belts 110, 110. Since the leaves are held at the right and left proper positions by the leaf separating comb 116, the seedlings are supplied on the seedling transport belts 110 in an aligned state. After the seedlings have been extracted, the leaf separating comb 116 immediately retracts.

The seedlings N for one horizontal row extracted by the seedling extracting device 35 are paired with a pair of right and left seedling transport belts 110 and 11.
The seedling transport belts 110, 110, 110 that have received the seedlings transport half the left and right seedlings to the left and right sides, respectively. The seedlings N transported by the seedling transport belts 110 are dropped between a pair of planting guides 123 provided with an appropriate gap.
The left and right widths of the entire right and left seedling transport belts 110 and 110 are configured to be substantially the same width as the seedling mounting table 30.

The seedling planting device 37 includes a planting transmission frame 45.
A pair of seedling implants 122, 122 are attached to a rotating case 121 that rotates integrally with a planting drive shaft 120 provided at the rear end of the plant, and the seedling implants 122, 122 move along a closed-loop tip trajectory. I do. Each seedling implantation tool 122 alternately takes the seedlings dropped between the planting guides 123, one by one, and moves the seedlings between the planting guides 123, 123 to plant the seedlings in the field.

The rotating case 121 of the seedling implantation tool 122
The entire end surface 122a on the base side attached to is formed in a curved shape in plan view in the left-right direction. Thereby, the planting posture is hardly changed regardless of where the planted seedling hits the end face 122a of the seedling implanting tool 122. Conventionally, the end face 122a of the seedling implant 122 is a plane perpendicular to the longitudinal direction of the seedling implant 122, and the foliage of the rush seedlings tends to spread radially. Hits the flat end face 122a of the implant 122,
The posture of the plant to be planted is likely to change, and there is a possibility that the plant cannot be planted in an appropriate planting posture. In addition, the seedling implant 122 is provided with the leading end and the base (rear end) offset in the left-right direction, and the end face 122 a of the seedling implant 122 is offset at the leading end of the seedling implant 122. A curved surface is formed near the offset side so that the seedlings hitting the side escape. Therefore, since the leading end and the base (rear end) of the seedling implant 122 are offset from each other in the left-right direction, the seedling planted at the leading end hardly hits the base (rear end) and was planted. Seedlings are seedling implants 12
The seedlings escape on the opposite side of the rotating case 121 even when they hit the end face 122a of the second, so that the seedlings are hardly entangled in the seedling planting device 37.

The interval between the right and left seedling planting devices 37 is approximately 21 cm, which is substantially the same as the width of the seedling mounting table 30. this is,
Since the number of seedling pots P in the short direction of the seedling tray T is 8 and the length is 19 cm, the seedling transplanter of this embodiment can be configured. This is because the length of the seedling raising tray T in the lateral direction increases by the pitch (2 cm) of the seedling raising pot P each time the number of seedlings increases, so that the interval between the left and right seedling planting devices 37 increases accordingly. Therefore, the seedling transplanter 1
Is 21 cm between seedlings.

When the planting section 4 is operated while the traveling vehicle body 2 is traveling in the field, six grass seedlings are simultaneously transplanted between the 21 cm seedlings. In the above embodiment, the distance between the seedlings was 21 cm. However, if necessary, the distance between the seedlings may be set to 21 cm or less. The grass seedlings are densely planted and can harvest long and long grass facing upwards in search of sunlight.

Next, using the tray TZ for growing tillers,
A description will be given of obtaining the seedlings N of the seedlings to be raised in the seedling raising pots P on the seedling raising tray T. First, the configuration of the breeding tray TZ will be described with reference to FIGS. The breeding tray TZ is made of a hard material (made of plastic) like a conventional seedling box for paddy rice, and has a plurality of elongated groove-shaped seedling pots PZ... The pots PZ are connected to each other on the opening side. In the center of the left and right sides of the breeding tray TZ, there is provided a wide interval TZc in which the distance between the pots PZ is large.
Is divided into two equal counties. A cut PZc is formed at the bottom of the seedling raising pot PZ.
When the seedlings are grown by Zc, excess water is drained off, and the roots of the seedlings N extend from the pot PZ to the ground to absorb nutrients from the ground for good growth. The seedling extruded body is inserted from below from PZc, and the seedling N in the pot PZ can be easily taken out.

The tray TZ for growing tillers is
Since the external dimensions are the same as the seedling raising tray T,
The seedlings are placed on an under tray 276, which will be described later. Then, the breeding tray TZ which is irrigated and placed on the under tray 276 is provided.
In the seedling pots PZ ..., the cultivation in the seedling pots PZ ... is slightly hard muddy state.
The rush seedlings N (two or three stems) are inserted into the soil in each seedling raising pot PZ.

Next, the sprouts N on the tray for growing tillers TZ
The operation for inserting the symbol will be described. The seedling inserter 201 shown in FIG. 21 to FIG.
Seedling supply device 202 for supplying 6 to predetermined seedling insertion position E
And a seedling box supply device 203 for supplying the splitting and growing tray TZ to the seedling inserting position E, and taking out the seedling N from the seedling cartridge 206 at the seedling inserting position E and inserting it into the seedling growing pot PZ of the splitting and growing tray TZ. Seedling insertion device 204
And

As shown in FIG. 25, the seedling cartridge 206 used in the seedling inserter 201 has a seedling growing tray TZ in which eight seedling receiving portions 261... A seedling container 262 is arranged side by side in the left-right direction at an interval corresponding to the pot PZ. The seedling storage units 261 are alternately shifted back and forth. Each seedling storage part 261 has a funnel shape with an enlarged upper part, and its upper end opening is alternately deviated to the opposite side across the seedling storage parts L1 and L2 for each seedling storage part 261.
The deflection direction is oblique to the rows L1 and L2.
By setting the shape of the seedling storage portions 261 as described above, the opening at the upper end of the seedling storage portions 261 formed in the seedling storage body 262 having the same size can be widened. The supply of the seedlings N becomes easy. At the front and rear sides of the upper end portion of the seedling container 262, a chain supply conveyor 211.2 described later is provided.
The support portions 263 supported by the twelve chains are formed. Further, on the front and rear inner sides, engaging portions 264 and 26 with which hanging bodies 215 and 221 to be described later are engaged from below.
4 are formed.

Below the seedling housing 262, a lower end positioning body 266 rotatably supported by left and right shafts 265 is provided. This lower end positioning body 266
Is normally positioned immediately below the seedling container 262 by being biased by the spring 267, but the retreating actuator 257 that moves backward pushes the pin 268, so that FIG.
It can be retracted to the position indicated by the chain line in FIG.

Here, the structure of the under tray 276 will be described in detail. The bottom 277, the left and right side walls 278 and 278, and the front and rear walls 279 and 279 are integrally formed of a synthetic resin in a rectangular box shape in plan view. The bottom 277 has an oblong through hole 2 which is long in the direction toward the front and rear walls 279 and 279 in plan view.
80 are provided. This through-hole 280 ...
When the seedling raising tray T or the splitting and growing tray TZ is placed on the under tray 276, the bottoms of the seedling raising trays T or the seedling growing pots P... 277 (see FIGS. 30 and 31).

281 are left and right side walls 278 on the upper surface of the bottom 277.
278 is a ridge provided with both ends connected to each other, and the bottom surface of the wide interval Tc or TZc at the left and right central portion of the seedling raising tray T or the splitting and growing tray TZ is fitted to the ridge 281. When the seedling raising tray T or the splitting and growing tray TZ is placed on the under tray 276,
The seedling raising tray T or the splitting and growing tray TZ is stably placed on the under tray 276.
Alternatively, the positioning of the split propagation tray TZ is also ensured, and the bottom of each of the seedling raising pots P or PZ surely matches each of the through holes 280.

Each of the seedling pots P in the seedling pots T placed on the under tray 276 and filled in the seedling pots P... … Or PZ… in a state where the cultivation soil is slightly hard muddy,
In step 1, the rush seedling N inserted into the cultivated soil in each seedling pot P ... or PZ ... is placed on the ground as it is placed on the undertray 276 to grow the seedling (at this time, the bottom surface of the undertray 276 It is better to push the under tray 276 against the ground so as to slightly enter the ground, so that the roots of the seedlings N extend quickly into the ground and grow better.) At the time of irrigation, excess water is drained from the cut Pc or PZc of each seedling raising pot P or PZ, and water in the under tray 276 is drained well through each through hole 280. Root rot due to accumulation for a long time can be prevented. Furthermore, each seedling pot P…
Or from each of the cuts Pc or PZc of PZ... Through each through hole 280 of the under tray 276,
.. Or the roots of the PZc seedlings N pass through the net 283 and extend to the ground to suck nutrients from the ground and grow well.
Since the positions of the through holes 280 of the under tray 276 and the bottoms of the seedling pots P ... or PZc ... coincide with each other, the roots of the seedlings N of the seedling pots P ... or PZc ... And its growth is very good.

After the growth, the under tray 2
When stripping 76 from the ground, the roots that extend into the ground are cut. As this method, the net 283 on one side of the left and right side walls 278 of the under tray 276 and the under tray 27
6 insert a wire 284 between the left and right side walls 2
The wire 284 and the like are moved toward the other side of the wire 78 to perform the cutting operation. Each through hole 280 of the under tray 276 has an oval shape long in the direction toward the front and rear walls 279 and 279 in plan view. Since the root group passing through the through hole 280 is also elongated in the direction toward the front and rear walls 279 and 279, the root is cut when the wire 284 and the like are moved in the left and right side walls 278 and 278. Can be performed easily, work efficiency is very good, and work can be performed efficiently.
(The same applies when a root cutting blade is used instead of the wire 284. The net 283 does not have to be particularly laid.)
The left and right side walls 278 and 278 are provided with notches 282 as shown in FIG.
Nursery tray T or tray TZ for split propagation placed on a tray
When taking out, since the left and right sides of the seedling raising tray T or the splitting and growing tray TZ are exposed at the notch 282, the left and right sides of the seedling raising tray T or the splitting and growing tray TZ can be easily held. Thus, the seedling raising tray T or the split propagation tray TZ can be easily taken out from the under tray 276. Therefore, the operation of taking out the seedling raising tray T from the under tray 276 when loading the seedling raising tray T into the transplanting machine after the seedling raising can be performed efficiently, so that the efficiency of the transplanting operation is improved. On the other hand, in order to prevent the under tray 276 from bending, the front and rear
79 and 279 are not provided with notches. In addition, the front and rear walls 279 and 279 and the left and right side walls 2 without the notch are provided.
Ridges 28, 78 and 278 connected at both ends
1 has an effect of preventing bending and distortion when the under tray 276 is molded, and the under tray 276 with small bending and distortion can be formed.

The seedling supply device 202 includes supply conveyors 211 and 212 that transport the seedling cartridge 206 in a state where the support portions 263 and 263 are supported from below by a pair of chains.
Are provided in parallel in front and rear. One is a supply conveyor 211, which conveys the seedling cartridge 206 rightward in FIGS. The other is a return conveyor 212
Then, the seedling cartridge 206 is transported leftward in FIGS. 21 and 22. Work platforms 290 and 290 having a flat upper surface are provided along both conveyors 211 and 212. The work platforms 290 and 290 have an emergency stop switch 213 for stopping both the conveyors 211 and 212 together.
・ 214 is provided. Then, two workers stand toward the work tables 290 and 290, respectively, and work table 2
The rush seedlings N are placed on the seedlings 90 and 290, and the rush seedlings N placed on the workbench 290 are sequentially placed in the seedling storage units 261 of the seedling cartridge 206 one by one.

The seedling cartridge 206 is moved from the transport end of the supply conveyor 211 to the transport start end of the return conveyor 212.
The first suspension 21 capable of suspending the seedling cartridge 206 by being engaged with the engagement portions 264 of the
5, the seedling cartridge 206 is transferred. The first suspension body 215 is moved up and down by a lifting actuator 216 and moved back and forth by the actuator 21.
7 to move it back and forth.

Further, the seedling cartridge 206 is transferred from the transport end of the return conveyor 212 to the transport start end of the supply conveyor 211 by the second suspension 221 similar to the first suspension 215. I have. The second suspension body 221 is moved up and down by a lifting and lowering actuator 222 and is moved right and left by a front and rear moving actuator 223.

The supply conveyor 211 and the return conveyor 21
2, a plurality of seedling cartridges 206 are conveyed in a continuous state. When the seedling cartridge 206 conveyed by the supply conveyor 211 reaches the conveying end of the conveyor, the engaging portion 264 of the seedling cartridge 206
264 fits into the first suspended body 215 waiting at the transport end of the supply conveyor 211. In this state, the first suspension 215 slightly rises, and the seedling cartridge 206 is suspended. Next, the first suspended body 215 moves backward and descends, returning the seedling cartridge 206 to the conveyor 21.
The sheet is transferred to the transfer start end of No. 2.

The seedling cartridge 206 placed at the transport start end of the return conveyor 212 is transported to the transport end of the conveyor. Here, the engaging portions 264 and 264 of the seedling cartridge 206 fit into the second suspended body 221 waiting at the transport end of the return conveyor 212. In this state, the second suspension body 221 slightly rises, and the seedling cartridge 206 is suspended. Then, the suspension 221 moves forward and descends, and the seedling cartridge 206 is transferred to the transport start end of the supply conveyor 211.

By repeating the above operation, the seedling cartridge 206 circulates in the transport path of the supply conveyor 211 and the transport path of the return conveyor 212. Then, the seedling cartridge 206 is moved to the seedling insertion position E by the supply conveyor 211.
While being transported to the seedling cartridge 206,
Of seedlings N are supplied one by one to each of the seedling storage units 261. Since the seedling storage section 261 has a funnel shape on the upper side, it is easy to replenish the seedlings. The seedling N may be supplied to the seedling cartridge 206 transported by the return conveyor 212. When the seedling cartridge 206 containing the seedlings N moves to the seedling insertion position E, the seedling insertion device 204 takes out the seedlings N from the seedling storage units 261 of the seedling cartridge 206 by a method described later.

The seedling box supply device 203 places the dividing and growing tray TZ placed on the under tray 276 in a state where the longitudinal direction is forward and backward, and places it intermittently on the under tray 276 at intervals of the pitch of the seedling raising pot PZ. The divided breeding tray TZ is transported. The seedling box supply device 203 is provided below the seedling supply device 202 at the seedling insertion position E so as to intersect this at a right angle in plan view. If necessary, a carry-in conveyor 231 for carrying the tiller propagation tray TZ placed on the empty under tray 276 to the seedling box supply device 203, and a tiller propagation tray placed on the under tray 276 in which seedlings are inserted. An unloading conveyor 232 for unloading TZ from the seedling box supply device 203 is provided. The seedling pots PZ... Of the tiller propagation tray TZ placed on the under tray 276 are filled with cultivation soil and irrigated to form a slightly hard mud.

The seedling insertion device 204 is provided with the seedling cartridge 20.
6 is provided with a gripping hand 241 for inserting the seedlings N into the multiplication tray TZ for dividing the seedlings N accommodated in 6. The gripping hand 241 is located on the rear side of the pushing seedling position E, and is entirely moved up and down by an elevating actuator 243 and moved back and forth by an anteroposterior actuator 245.

A pair of left and right finger arms 247L and 247 for gripping the seedling N is attached to the gripping hand 241.
R are provided in the same number as the seedling storage section 261 of the seedling cartridge 206. A cushion material 248 such as rubber is attached to the inner surface of each finger arm. The support for supporting the left finger arm 247L ... and the support for supporting the right finger arm 247R ... are respectively attached to separate opening / closing actuators 249L and 249R, and both opening / closing actuators operate in opposite directions. The finger arm opens and closes with.

The gripping hand 241 has the gripping hands 2 at the lower positions of the finger arms 247L, 247R.
The rear guide plate 2 which is paired with the front guide plate 252 provided separately from the base plate 41 to fix the posture of the seedling N when grasping the seedling.
51 are provided. This front guide plate 251
Has a saw-shaped tip in plan view so as to guide the seedling N between the pair of finger arms 247L and 247R. The front guide plate 252 is a set of two upper and lower plates,
It is provided to be able to move back and forth by a back and forth movement actuator 254.

Further, above the seedling inserting position E, a seedling head holding plate 2 which is moved up and down by a seedling head holding cylinder 255.
56 are provided. Further, the lower end positioning member 26 of the seedling cartridge 206 is placed at an appropriate position near the seedling insertion position E.
The retracting actuator 257 for retracting the actuator 6 to the retracting position is provided.

Next, the operation of the seedling insertion device 204 will be described (see FIGS. 33 and 34). The seedling cartridge 206 conveyed by the supply conveyor 211 is placed at the seedling insertion position E.
Then, the seedling head holding plate 256 comes into contact with the upper surface of the seedling cartridge 206 or descends to just before the contact (FIG. 33a). Due to this, the leaves are bent,
When the seedling N is caught in the middle of the seedling storage part 261 due to the existence of a laterally extending rhizome, the seedling holding plate 256 presses the upper end of the seedling N from above, and the lower end of the seedling N is positioned at the lower end. Push it in until it touches body 266.

Next, the grasping hand 241 waiting at a predetermined height corresponding to the seedling cartridge 206 protrudes, and the front guide plate 252 protrudes, and the rear guide plate 251 and the front guide plate 2 of the grasping hand 241 protrude.
52, the part of the seedlings N ... that is protruding downward from the seedling storage units 261 ... is grasped (Fig. 33b). At this time, each seedling N is fitted into the saw-shaped valley portion of the rear guide plate 251 and the seedling N
The front-back position and the left-right position are determined. Also, two front guide plates 2 are provided above and below the rear guide plate 251.
52 are fixed so that the posture of the seedling N is not disturbed. In this state, the finger arms 247L, 247R ...
Is closed, and each seedling N is grasped.

Further, after the front guide plate 252 retreats, the retreat actuator 257 operates to retreat the lower end positioning body 266 to a position where the lower end of the seedling N is not supported from below (shown by a chain line in FIG. 23) ( Figure 33c).
Then, the lifting / lowering actuator 243 operates to lower the gripping hand 241 to take out the seedling N from each seedling storage section 261 of the seedling cartridge 206 downward (FIG. 33D). Thus, since the seedling N is taken out along the direction of extension of the leaf stem of the seedling N, the seedling N is not subjected to excessive force and is not damaged.

The holding hand 241 holding the seedling N
34 is lowered to a height slightly higher than the upper surface of the dividing and multiplying tray TZ placed on the under tray 276 carried by the seedling box carrying device 203 (FIG. 34).
a). Next, after the grasping hand 241 moves forward (FIG. 34b), the grasping seedlings N are moved slightly downward and inserted into the muddy soil in the seedling pot PZ that is long in the left-right direction of the multiplying tray TZ (see FIG. 34). FIG. 34c). Since the grasping hand 241 moves from the upper side of the seedling box conveyance to the lower side, the grasping hand 24
1 does not interfere with the seedlings N that have already been pushed. After the finger arms 247L and 247R open to release the seedlings N, the gripping hand 241 retreats (FIG. 34d) and then returns to the initial position.

The above operations are controlled by a control device (not shown). The operating speed of each part can be arbitrarily adjusted according to the number of workers, the experience, the degree of fatigue, etc., of the workers who supply the seedling N to the seedling cartridge 206. And seedling supply device 2
02 is provided long on one side of the seedling insertion device 204, so that when performing a seedling insertion operation, the worker can supply the seedlings N to the long seedling supply device 202 provided in a comfortable posture. In addition, the planting operation can be performed accurately and efficiently. In addition, the length of the seedling supply device 202 is set to a length that can be operated by two or more workers.
Since the seedlings N can be supplied to the seedlings 02, the seedlings can be supplied to the seedling supply device 202 even if the seedling insertion speed of the seedling insertion machine is increased, and the seedling insertion operation can be performed with high efficiency.

The cultivation soil used in the seedling cutting machine 201 is a mixture of mountain soil and shirasu at a ratio of 9: 1 and dried by the drying device A. By mixing 10% of shirasu, low-priced soil can be obtained. Also, by mixing shirasu by 10%, cultivation soil is put into a seedling raising tray T in which a large number of seedling raising pots P are connected and irrigated, and the cultivation soil is used in a slightly hard mud state. When the root portion of the rush seedling N is inserted into a slightly hard muddy soil in the seedling raising pot P as described above, if the shirasu is mixed with 10% water, the root portion of the rush seedling N is most likely to be inserted. Since suitable fluidity is obtained, it can be easily inserted into the muddy soil in the seedling raising pot P, and when the root portion of the rush seedling N is inserted, the soil around the seedling N is pushed away. However, due to the fluidity of Shirasu, the cultivation soil immediately returns to the periphery of the seedling N, and the seedling N
After inserting the seedlings, the posture of the seedlings N is stable and a good seedling inserting operation can be performed, and the subsequent seedling growth is also good.

Further, since the ground and shirasu are mixed and dried and then pulverized by the pulverizer B, appropriate pulverization can be performed and, at the same time, those having a particle size of 1.54 mm or less can be appropriately selected by the rotary sieve C. . Then, since the dry soil after sorting and the powdered bentonite are mixed by the rotary mixing device D, the mixing can be performed uniformly and a good quality soil can be obtained. Further, since bentonite in powder form is mixed in the final step, there is no waste of bentonite. (If the powdered bentonite is mixed before being sorted by the rotary sieve C, the soil discarded by the rotary sieve C is also discharged with the bentonite, which is wasteful.) Further, a large amount of inexpensive bentonite is produced. Numerous seedling pots P… or PZ due to the excellent water absorption of
Nursery tray T or nesting and propagation tray T with…
When used as cultivation soil for Z, each seedling pot P ... or P
Water management at the time of raising the seedlings N in Z... Becomes easy, and good seedlings N can be easily grown. Also, by mixing 1% of powdered bentonite, the most suitable water absorption is exhibited when used as a cultivation soil in a seedling raising tray T or a split-growing tray TZ in which a large number of seedling raising pots P... Or PZ. Water management at the time of raising the seedlings N in the seedling raising pots P ... or PZ ... becomes easy, and good seedlings N can be easily grown. Further, even if the formation of a root pot due to the roots of the seedlings N being entangled is small, the caking force of the powdery bentonite having a very fine particle size acts to appropriately solidify the cultivation soil of each seedling raising pot P into a pot shape. (When 1% powdered bentonite is mixed, a suitable hardening action with the least harm to the growth of the seedlings is exhibited.) In other words, the pot shape of the soil is hardly broken, and the seedling transplanting operation to an appropriate field can be performed. (In addition, if a large amount of bentonite is used, it hardens too much and hinders the growth of roots and the seedling growth is inferior. Conversely, if the amount of bentonite is small, it hardens and the transplanted seedling is mechanically transplanted. In this case, the root mortar is broken and the proper transplantation cannot be performed.Therefore, this soil cultivation has little harm to the growth of the seedlings. The amount of bentonite is used so as to give a firm mass.)
After mixing and drying mountain soil and shirasu, the mixture is pulverized to a particle size of 1.
Since the cultivation soil is selected from those having a size of less than 54 mm, the workability is good and the work of putting the cultivation soil into the seedling raising tray T or the split propagation tray TZ having a large number of seedling raising pots P... Or PZ.

Also, a large number of seedling raising pots P ... or PZ ...
Seedling tray T or tray TZ for dividing and multiplying
The cultivation soil is put into the seedling pot P ... or PZ ... and the root of the grass seedling N is put into the slightly hardened muddy cultivation in the seedling pot P ... or PZ ... In the case of inserting, in addition to the effect of the addition of the above-mentioned shirasu, it can be easily inserted into the muddy soil in the seedling raising pot P or PZ.

As described above, the cultivated soil is placed in each of the seedling raising pots P... Or PZ... Of the seedling raising tray T or the splitting and growing tray TZ and irrigated, and the cultivated soil is slightly hardened mud. When the rush seedling N for one strain is inserted in the seedling pots P... Or PZ.
As described above, the rush seedlings N are inserted into the cultivation soil in the seedling raising pots P... Or PZ. And
Subsequent growth is also good.

Next, the operation of inserting rush seedlings N into the seedling raising pots P on the seedling raising tray T will be described. First, the configuration of the seedling raising tray T will be described with reference to FIGS.
The seedling raising tray T has plastic flexibility, and a plurality of seedling raising pots P are arranged vertically and horizontally at predetermined intervals.
The pots P are connected to each other on the opening side. In the center of the left and right sides of the seedling raising tray T, there is provided a wide interval Tc in which the distance between the pots P is large, and each pot P is divided into two equal groups with the wide interval therebetween. A cut Pc is formed at the bottom of the seedling raising pot P, so that excess water is drained during seedling raising and the seedling N
The roots of the roots extend from the pot P to the ground to absorb nutrients from the ground for good growth, and when transplanted to Honda by a machine, the seedling extruded body enters from the cut Pc and the pot P
The seedlings N inside can be taken out.

Then, the seedling raising tray T is placed on the under tray 276, and the seedling pots P are filled with the above-mentioned cultivation soil. Then, each seedling pot P on the seedling raising tray T that has been irrigated and placed on the under tray 276.
In the seedling inserter 201, the rush seedlings N of one plant (two or three stems) were inserted into the seedling pots P in each seedling pot P in a state in which the cultivation in the inside became slightly hard muddy. It is. The seedling raising tray T has an outer size and shape which are the above-mentioned breeding tray T.
Z, and of course, the cuts Pc at the bottom of each seedling raising pot P... Are arranged in exactly the same shape and at the same pitch as the cuts PZc at the bottom of each seedling raising pot PZ. ing. Therefore, in the seedling inserter 201, just as with the tray TZ, the rush seedling N of one strain (two or three stems) is inserted into the cultivation soil in each seedling pot P. Can be.

Next, as one embodiment of the method for cultivating rush of the present invention, a case where the grass is cultivated and harvested in the field 10a will be described. First, in December, the parent plant of the grass seedlings was divided such that two (or three) stems became one plant, and the grass seedlings N to be divided were divided into four seedling pots PZ of the propagation tray TZ. Each plant has a total of 120 strains.
Twenty strains are 3 of about half the size of one tray TZ.
(In the above example, the seedling N was inserted in a state where the soil was put in the seedling pots PZ. However, after the seedlings N were inserted in the seedling pots PZ.) The seedlings N may be inserted into the trays, and the breeding tray TZ into which the sprouts N are inserted is placed on the ground while being placed on the under tray 76, and the seedlings are raised as described above (see FIG. 30). still,
Dividing the parent stock is a difficult task as described in the conventional example, but it takes less time because the stock is divided into about 120 stocks.

When the seedlings are raised for a short period of time two months later until February of the following year, the seedlings are still young, with the number of stems of one plant divided into about ten. Then, in February, the propagation tray TZ is peeled off from the ground together with the under tray 76 (the root extending from the under tray 76 to the ground is cut with a wire or the like as shown in FIG. 32), and the bottom of the seedling growing pot PZ is pushed. A thirty band-shaped pot seedlings are taken out from the thirty seedling raising pots PZ (see FIG. 37), and a cutting device 30 in which fifteen disc cutters 300a are rotated coaxially.
At 0, the root of each pot seedling is cut into 16 equal parts. Then
Each of the 16 equally divided roots has 2 to 3 stems (the sprout is also equally divided into 4 equally divided roots, see FIG. 39). This is because when the rush seedlings N are raised (cultivated) in a nursery pot PZ having a narrow width as in the embodiment, the roots extend but hit the inner wall of the nursery pot PZ, and the roots spirally grow in the nursery pot PZ (stretching). The stem grows in the seedling pot PZ in plan view, and the stem grows evenly in the seedling growing pot PZ. Even if the grown seedling is divided into 16 in any way (even if divided randomly into 16). Each of the 16 equally divided roots has 2-3 stems (and shoots).

In this way, 30 pots of seedlings can be easily divided into 16 and 480 can be easily obtained. The seedlings N of the 480 strains which have been cultivated for a short period of time and are still young are again inserted into the respective seedling pots PZ... Of the propagation tray TZ as described above (because four seedlings N are inserted into one seedling pot PZ). 480 strains are to be inserted into 120 seedling raising pots PZ..., And can be inserted by two splitting and growing trays TZ), while the splitting and growing tray TZ into which the seedlings N are inserted is placed on the under tray 76. Put it on the ground and raise it again.

Then, two months later until April when seedlings are raised, 1
The seedlings are still young, with the number of stems divided into about 10 stems. Then, in April in the same way, the breeding tray TZ was peeled off from the ground together with the under tray 76,
By pressing the bottom of the seedling raising pot PZ, 120 band-shaped pot seedlings are taken out from each seedling raising pot PZ, and the cutting device 300 cuts the root of each band-shaped pot seedling into 16 equal parts in the same manner as described above. Then, each of the 16 equally divided roots has 2-3 stems (the sprout is also equally divided into 4 equally divided roots).

In this manner, 16 seedlings of 120 strains were
By dividing equally, 1,920 strains can be easily obtained. The seedlings N of 1,920 strains which have been cultivated for a short period of time and which are still young are again planted in the respective seedling pots PZ on the propagation tray TZ as described above.
(Because four seedlings N are inserted in each one seedling pot PZ, 1,920 strains are inserted in 480 seedling pots PZ..., And can be inserted in eight piece-growing trays TZ). The breeding tray TZ into which the seedlings N have been inserted is placed on the ground while being placed on the under tray 76, and the seedlings are raised again.

Then, two months later, when the seedlings are raised until June, 1
The seedlings are still young, with the number of stems divided into about 10 stems. Then, in June in the same manner, the breeding tray TZ was peeled off from the ground together with the under tray 76,
By pressing the bottom of the seedling raising pot PZ, 480 band-shaped pot seedlings are taken out from each seedling raising pot PZ, and the cutting device 300 cuts the root of each band-shaped pot seedling into 16 equal parts as described above. Then, each of the 16 equally divided roots has 2-3 stems (the sprout is also equally divided into 4 equally divided roots).

Thus, 480 pot seedlings were
By dividing equally, 7,680 strains can be easily obtained. The seedlings N of the 7,680 strains which were cultivated for a short period of time and were still young were again inserted into the respective seedling pots PZ... Of the multiplying tray TZ as described above (four seedlings N per seedling pot PZ).
7,680 strains can be inserted into 1,920 seedling growing pots PZ..., And can be inserted with 30 splitting and growing trays TZ). The seedlings are raised again while being placed on the ground while being placed on the tray 76.

Then, two months later, when raising seedlings until August, 1
The seedlings are still young, with the number of stems divided into about 10 stems. Then, in August in the same manner, the breeding tray TZ was peeled off along with the under tray 76 from the ground,
Pressing the bottom of the seedling raising pot PZ, the band-shaped seedlings of 1,920 strains are taken out from each seedling raising pot PZ.
At 0, the root of each band-shaped pot seedling is cut into 16 equal parts in the same manner as above. Then, each of the 16 equally divided roots has 2-3 stems (the sprout is also equally divided into 4 equally divided roots).

In this way, 30,920 strains can be easily obtained by dividing the 1,920 pot seedlings into 16 equal parts. Finally, the young seedlings N of 30,720 strains which were cultivated for a short period of time are finally inserted into each seedling pot P of the seedling raising tray T (30,720 strains can be inserted with 120 seedling raising trays T). The seedling raising tray T in which the seedlings N are inserted is placed on the ground while being placed on the under tray 76, and the seedlings are raised again.

When the seedlings are raised for a short period until October two months later, they become young seedlings in which the number of stems of one strain is divided to about ten. In this way, the number of seedlings (25,000 to 27, 27,
000 shares). In October, the seedling raising tray T was peeled off from the ground in the same manner as the under tray 76, and the seedling raising tray T was placed on the seedling table 30 of the seedling transplanter 1 in October. wear.

Then, it is cultivated and harvested from July to early August of the following year. In addition, among the seedlings for harvest transplanted to the field in October, rush seedlings to be harvested in the next cultivation process in December are dug up as described above, and the seedlings to be strained are placed in each seedling tray T. The seedlings are grown in pots P. Alternatively, the seedlings may be grown on the multiplication tray TZ without planting them in the necessary number of seedlings for the next year.

As described above, the pot seedlings are taken out from the seedling raising pot P, and the cutting device 30 is used without loosening the roots.
The root of each band-shaped pot seedling is simply cut into 16 equal parts by a simple operation using 0 or a kitchen knife or the like, and each of the 16 equally-divided roots has 2-3 stems (the number of shoots is 16 or more). The roots are equally divided into the divided roots), so that the stock dividing operation can be performed easily and in a short time. In addition, the work of inserting this into the seedling raising pot PZ or P also requires the root portion of
Since the cut pieces are inserted equally, the shape is constant and it is easy to insert even by manual work.But, since the shape of the seedlings is constant, the machine adaptability is good and the seedling inserter 201 mechanically inserts them. In this case, a good seedling insertion operation can be stably performed.

As described above, by repeating the process of inserting the root of the band-shaped pot seedling into 16 equal parts and inserting it into the seedling raising pot PZ or P and raising the seedlings, a large number of necessary seedlings can be easily obtained. Can be obtained, and efficient cultivation of grass seedlings can be performed. In the above embodiment, the seedling raising pot P
The root of the pot seedling taken out of Z is
Although an example of cutting into six equal parts has been shown, a strip-shaped pot seedling is automatically taken out from the seedling raising pot PZ (for example, a seedling extruding pin... A configuration in which the seedlings are inserted into the pot PZ from the bottom side and extruded by pushing out the seedlings) is transferred to the cutting device 300, and the band-shaped potted seedlings are automatically cut to 16 by using a machine that sequentially cuts them into 16 equal parts. It is more efficient if you separate them.

On the other hand, as described in the conventional example, a phenomenon that the rush seedlings die when the rush seedlings N are inserted into the respective seedling raising pots P on the seedling raising tray T in August and cultivated until October, frequently occurs. I do. When the cause is studied by repeated trial and error of cultivation test, rush seedlings are weak to high temperature, and when the temperature rises to 30 degrees or more in summer, the ground temperature in the field rises and often withers. Was elucidated.

Therefore, in the above embodiment, an example is shown in which the seedling N is inserted and the seedling growing tray TZ is placed on the ground while the tray TZ is placed on the under tray 76 to raise the seedlings. It is configured so that water is supplied from one side of the cultivation tank by an irrigation device whose supply is controlled by a supply control valve, and water is discharged from the other side by a discharge control valve. The seedling growing tray TZ in which the sprouts N are inserted in the cultivation tank is placed on the under tray 76 to grow the seedlings. At the time of raising the seedlings, the supply control valve is opened and water is constantly supplied little by little by the watering device, and the discharge control valve is controlled so that water of a predetermined amount or more does not accumulate in the cultivation tank (so-called pool cultivation method). And the seedlings N of the tray TZ for continuous breeding are immersed in fresh water, so even if the temperature rises to 30 ° C or more in summer, the temperature of the roots of the seedlings does not rise and the seedlings die. No seedlings can be cultivated.

[0092] Occasionally, the supply control valve is closed, the discharge control valve is opened, and all the water in the cultivation tank is drained.
If the roots of the seedlings are dried for a short time in a state of lack of water, the pores of the seedlings close and become in a crisis state, so that the seedlings become accustomed to the crisis state, grow into strong seedlings, and do not easily die. In addition, the lack of water makes the core of the seedlings harder, resulting in high quality seedlings for rush.

On the other hand, the seedlings in the young state as described above are divided so that the number of stems becomes two (or three),
The behavior of the rush seedling is changed by performing the seedling insertion multiple times in Z or P, and when the seedling is transplanted to the field in October and the last cultivation is performed until July of the following year as shown in FIG. In addition, a single rush plant grows with the number of stems increasing by dividing, but at that time, the habit of dividing at a nearly horizontal angle and increasing the stems is increasing. At the time of harvesting, as shown in FIG. 41, the stalk of rush grows into a long stalk which is substantially the same as a whole when viewed from the side (the stalk of the rush as a whole also has the length of the central part and the length of the surrounding stem. It grows to a long stem with almost the same difference, with little difference in height). Therefore, according to the cultivation method using the seedling raising pot PZ or P, the yield of long and high quality grass which is required in the market increases. It should be noted that, as a result of trial and error, the change in the habit of the rush seedlings is optimal in a narrow band-shaped or small cylindrical (circular cross-sectional shape) pot like the seedling raising pot PZ or P of the example. Was. This is considered to be due to the fact that when the sprouts split in the seedling raising pot PZ or P, the roots extend in a certain direction along the inner wall of the pot, and the stems to be split also increase regularly.

Of course, according to the cultivation method using the seedling raising pot PZ or P, the distance X1 between the stems to be divided is shorter than the distance X2 between the stems according to the conventional method shown in FIG. It is considered that the habit of splitting in a narrow area is caused by raising the seedlings multiple times in the same area, and the interval between the splitting stems is shortened) .When cultivating in a field, the stems are dense because the stems are narrow, and from the top The stalks extend straight upwards in search of the sunshine, and the length of the stalks increases. And since it grows in a dense state, the stem grows in a thin and hard state. Now, the grass that is required to have good quality in the market is long, thin, and hard.
Therefore, according to the cultivation method using the seedling raising pot P,
You can get long, thin, hard and high quality rush.

According to the cultivation method using the seedling raising pot P, as shown in FIG. 44, in the cross section of the rush stem, the soft core portion S is small and the hard portion H outside the stem is thick (see FIG. 44). In the conventional cultivation method, as shown in FIG. 45, the core portion S is large and the hard portion H on the outer side of the stem is thin.)
So I was able to get hard grass.

In short, the seedlings obtained by raising the seedlings in a narrow seedling raising pot PZ or a small seedling raising pot P are again divided into seedlings, raised in seedling raising pots, and after repeating the cycle, transplanted to a field and cultivated. Since the method is cultivation of rush, it is possible to obtain long, thin, hard, and high-quality rush and increase the yield of long grass.

In the embodiment, the example of slicing the parent strain cultivated in the field and cultivating the parent strain in the first December of the stock splitting operation was described. Needless to say, from the beginning, the pot seedlings may be taken out from the seedling raising pots PZ... Of the splitting and growing tray TZ, cut into 16 equal parts, and divided into strains.

In the above example of increasing the number of strains, an example in which the number of strains is first started from December is shown. For example, when the number of strains is started in February, one strain has 2-3 stems (and shoots). The 480 strains of seedlings N are inserted into the respective seedling pots PZ... Of the dividing and growing tray TZ (480 strains can be inserted with two splitting and growing trays TZ). The seedlings are raised while being placed on the tray 76, and thereafter, every 10 months at a cycle of 2 months as in the above example.
By the month, the number of seedlings (25,000 to 27,000) required for cultivating rush in a 10a field may be obtained.

In the above embodiment, an example was shown in which seedlings having 2-3 stems (and sprout) were inserted into each seedling pot PZ of the tiller propagation tray TZ, and the seedlings were grown for two months. However, if a seedling having 4 to 5 stems (and sprout) is inserted into each seedling pot PZ... Of the dividing and multiplying tray TZ, a double seedling (and sprout) of the above example can be inserted into one seedling pot PZ. )
A certain seedling is obtained, and if the seedling is divided into 32, the number of strains obtained is twice that of the above example, so that the number of seedling raising cycles every two months can be reduced.

Finally, the number of strains is increased by raising the seedlings a plurality of times using the seedling pots, and the stocks can be easily divided (cutting the roots of the pot seedlings with a machine is more efficient). As the so-called efficient seeding operation by the machine and the efficient machine transplanting operation by the seedling transplanter 1,
Labor saving of grass cultivation can be performed with a machine integrated system of the operation of increasing the number of rush seedlings, the insertion of seeds into seedling pots, and the transplantation to the field, which greatly contributes to rush cultivation.

When the number of strains is increased by raising seedlings a plurality of times by using a seedling raising pot without using the above-described splitting and multiplying tray TZ, only the seedling raising tray T is used. Has a problem that it is difficult to cut the strain when cutting the strain. Therefore, when cutting the strain grown in the column-shaped seedling raising pot P,
Press the stake (soil) with a flat plate (press the stake only so that the stem does not hurt). If the stake is flat, easily divide with a knife or cutter with good workability. Can be.
Also, even when using a machine that cuts automatically,
If the stock part (soil part) is cut into a flat plate and then cut, the mechanization is easy.

[Brief description of the drawings]

FIG. 1 is a side view of a seedling transplanter.

FIG. 2 is a plan view of the seedling transplanter.

FIG. 3 is a side view showing a part of the planting portion.

FIG. 4 is a developed rear view of the planting section frame.

FIG. 5 is a side view of the seedling mounting table.

FIG. 6 is a sectional view taken along line S1-S1 in FIG.

FIG. 7 is a sectional view taken along line S2-S2 in FIG.

FIG. 8 is a sectional view taken along line S3-S3 in FIG.

FIG. 9 is a rear view of the seedling lateral feeding device and the like.

FIG. 10 is a side view of a portion around a seedling removal position.

FIG. 11 is a plan view of a portion around a seedling removal position.

FIG. 12 is a plan view of a portion around a seedling opening position.

FIG. 13 is a left side view of the seedling removal tool.

FIG. 14 is a right side view of the leaf retainer.

FIG. 15 is a view showing the operation of a seedling removal tool and a leaf presser.

FIG. 16A is a plan view of the seedling implant, and FIG.

FIG. 17 is a plan view for explaining the operation of the seedling implant.

FIG. 18 is a cultivation soil production process diagram.

FIG. 19 is a plan view of a tray for growing tillers.

FIG. 20A is a view taken in the direction of arrow A1, and FIG.
It is an arrow view.

FIG. 21 is a front view of the seedling inserter.

FIG. 22 is a plan view of the seedling inserter.

FIG. 23 is a side view of the seedling inserter.

FIG. 24 is a plan view of the seedling insertion device.

25A is a front view, FIG. 25B is a plan view, and FIG. 25C is a side view of the seedling cartridge.

FIG. 26 is a plan view of an under tray.

FIG. 27 is a front view of the under tray.

FIG. 28 is a bottom view of the under tray.

FIG. 29 is a side view of the under tray.

FIG. 30 is an enlarged side sectional view showing a state in which a seedling raising tray is placed on an under tray to raise seedlings.

FIG. 31 is an enlarged bottom view of a state where the seedling raising tray is placed on the under tray.

FIG. 32 is a front cross-sectional view for explaining an operation showing a root cutting operation after growing.

FIG. 33 is an explanatory view 1 showing a step of removing a seedling from a seedling cartridge.

FIG. 34 is an explanatory view 2 showing a step of removing a seedling from a seedling cartridge.

FIG. 35 is a plan view of a seedling raising tray.

36 (a) is a view as viewed from an arrow A3 in FIG. 35, and FIG.
It is an arrow view.

FIG. 37 is a perspective view for explaining the operation of taking out a band-shaped pot seedling from the seedling raising pot PZ.

FIG. 38 is an operation explanatory view of dividing a band-shaped pot seedling into 16 equal parts.

FIG. 39 is a perspective view of a seedling N divided into 16 equal parts.

FIG. 40 is an explanatory diagram showing a situation in which one grass seedling is divided and the number of stems is increased by a cultivation method using a seedling raising pot PZ or P.

FIG. 41 is an explanatory diagram of grass that is desired to be harvested and harvested by the cultivation method using the seedling raising pot PZ or P.

FIG. 42 is an explanatory diagram showing how one rush seedling is divided and the number of stems is increased by conventional cultivation.

FIG. 43 is an explanatory diagram of grass that is required to be harvested and harvested by conventional cultivation.

FIG. 44 is a cross-sectional view of grass that is desired to be harvested by the cultivation method using the seedling raising pot P.

FIG. 45 is a cross-sectional view of grass that is to be harvested by conventional cultivation.

[Explanation of symbols]

Reference Signs List A drying device B crusher C rotary sieve D rotary mixing device E seedling insertion position N seedling T seedling raising tray P seedling raising seedling pot TZ Tillering and growing tray PZ Grooving and raising seedling pot in plan view 1 Seedling transplanter 2 Traveling car body 3 Link device 4 Planting unit 33 Seedling removal device 34 Seedling transfer device 35 Seedling removal device 36 Seedling lateral feed device 37 Seedling planting device 83 Seedling holder (seedling holder) 90 Seedling removal tool 100 Leaf holder Tools 110 Seedling conveyor belt 122 Seedling planting tool 201 Seedling inserter 202 Seedling supply device 203 Seedling box transfer device 204 Seedling insertion device 206 Seedling cartridge 211 Supply conveyor 212 Return conveyor 241 Gripping hand 300 Cutting tool such as cutter

Claims (6)

[Claims] 1. A method for raising grass seedlings, comprising the step of dividing the grass seedlings into a plurality of pieces and raising the seedlings in a seedling pot several times in succession. 2. The method according to claim 1, wherein the root portion of the seedling to be raised in the seedling pot is divided into a plurality of pieces by a cutting tool such as a cutter 300, and the divided root portion is inserted into the seedling pot. 3. The method of claim 1 or 2, wherein the seedling raising pot is a narrow groove-shaped pot. 4. The method according to claim 1, wherein the cultivated soil is put into the seedling raising pot after inserting the divided root into the seedling raising pot. 5. The method according to claim 1 or 2, wherein the divided roots are inserted into the cultivation soil in the seedling raising pot in a state in which the soil containing muddy water is put in the seedling raising pot. 3. The method of breeding seedlings according to 3. 6. The cultivation of rushes, comprising the steps of dividing the rushes and seedlings into a plurality of seedlings and raising the seedlings in a seedling pot a plurality of times in succession, and then transplanting and cultivating the rushes and seedlings in the seedling raising pot. Method.