JP5761145B2 - Seeding machine - Google Patents

Description

  The present invention relates to a seeder.

  A seeding device for seeding a seedling device, comprising a transport path for transporting the seedling device in one direction, and filling the seedling device with floor soil in order from the upper side of the transport path along the transport path There is known a sowing machine provided with a sowing device for sowing seedlings and a soil covering device for covering seedlings (see Patent Document 1). Some seeders of this type are provided with an irrigation device for irrigating the seedling device between the floor soil filling device and the seeding device or between the seeding device and the soil covering device.

JP 2003-102283 A

  According to the seeder of the above background art, seeding or covering soil is carried out after the irrigation device irrigates the seedling device, but the soil stuffed in the seedling device by the floor soiling device is, for example, a soil having a small particle size and poor water absorption. In addition, the water irrigated on the upper surface of the floor soil packed in the seedling device is sown or covered with water collected without being absorbed, and the seeds sowed on the upper surface of the floor soil are placed between the floor soil and the covered soil. It becomes easy to be trapped, and the seeds sowed may cause oxygen deficiency and become poorly budding.

  Also, in order to avoid this problem, the irrigation position of the irrigation apparatus is changed from the irrigation position of the next process so that the water that has been irrigated to the seedling container before sowing or covering soil is absorbed without being accumulated on the upper surface of the floor soil. If the distance to the soil covering position of the soil covering device is set large, when filling soil with good water absorption, the space will be unnecessarily large, so that the seeder becomes longer and requires more space, sowing work There is a possibility that the workability of the machine may also deteriorate.

An object of the present invention is to prevent seeded seeds from becoming poorly budding, to improve the workability of the sowing work, to easily perform the soil supply operation and the soil covering supply operation, and to the seed tank 68 by mistake. Or, it is to constitute a seeder that prevents the supply of soil covering.

In order to solve the above problems, the present invention has taken the following technical means.
That is, the invention according to claim 1 is a seeder for seeding a seedling device (2), comprising a transporting route (3) for transporting the seedling device (2) in one direction, the transporting route (3). A floor soil filling device (6) for filling the seedling planter (2) with the floor soil in order from the upper side of the transfer path (3), a seeding device (7) for seeding the seedling device (2), and a seedling device (2 ) Is provided with a soil covering device (8), the floor soil filling device (6) is provided with a floor soil tank (54) for storing culture soil as floor soil, and the seeding device (7) is provided with seeds to be sown. The seed tank (68) for storing is provided, and the soil covering device (8) is provided with a soil covering tank (84) for storing the soil to be covered, and the upper end of the soil covering tank (84) is higher than the opening at the upper end of the seed tank (68). The left and right transport guides provided in the transport path (3) are arranged at a lower position and the upper end opening of the floor soil tank (54). (15) It is set as the structure which conveys the seedling raising device (2), and a conveyance path | route (3) makes a floor soiling part conveyance conveyor (17), a seeding part conveyance conveyor (18), and a soil covering part conveyance conveyor (28). The irrigation part conveyor (63) provided with the irrigation device (29) for irrigating the seedling device (2) is provided, and the pre-soil-carrying conveyor (between the sowing part conveyance conveyor (18) and the soil covering part conveyance conveyor (28)) 64), and by installing the irrigation unit conveyor (63), the distance between the irrigation device (29) and the seeding device (7) is longer than the length of the nursery device (2) in the transport direction. A stretching conveyor, and a shortening conveyor configured so that the distance between the irrigation device (29) and the seeding device (7) is shorter than the length of the nursery device (2) in the transport direction by being attached. It is possible to replace it with the conveyor before soil covering (64). The sowing apparatus is configured to be attached to the elongating conveyor so that the distance between the sowing apparatus (7) and the soil covering apparatus (8) is longer than the length of the nursery device (2) in the carrying direction. The irrigation section conveyor (63) can be replaced with a shortening conveyor in which the distance between (7) and the soil covering device (8) is shorter than the length of the nursery device (2) in the conveying direction. Was a seeder configured to be selectively mounted between the floor soil filling device (6) and the seeding device (7) or between the seeding device (7) and the soil covering device (8).

The invention according to claim 2 is the seeding machine according to claim 1, wherein the floor soil tank (54) is supported via a deformable elastic body (113) .

According to the first aspect of the present invention, the floor soil supply operation to the floor soil tank 54 and the soil cover supply operation to the cover soil tank 84 can be easily performed at a low level. Supplying floor soil or covering soil to the tank 68 can be prevented .

In addition, the interval from the irrigation position to the sowing position or the covering position can be changed so that the water irrigated to the seedling container before sowing or covering soil is absorbed without being accumulated on the upper surface of the floor soil regardless of the soil quality of the floor soil, The seeds sowed on the upper surface of the bed soil are trapped between the bed soil and the cover soil together with the accumulated water, preventing oxygen deficiency and budding failure, and the distance from the irrigation position to the sowing position or the cover soil position is reduced. Since it does not become unnecessarily large, the sowing machine becomes short and compact, and the workability of sowing work can be improved. Moreover, the seedling raising device 2 having a problem in the irrigation operation of the irrigation device 29 can be taken out immediately, and waste of seeds or covering soil can be prevented. And the distance between each apparatus can be changed. Moreover, even if there is a defect in the work on the seedling device 2, the defective seedling device 2 can be taken out immediately after that, preventing unnecessary work, and preventing waste of floor soil, seeds, and soil covering. be able to. Moreover, the irrigation device 29 can be selectively mounted between the floor soil filling device 6 and the sowing device 7 or between the sowing device 7 and the soil covering device 8.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, the deformable elastic body 113 causes the floor soil tank 54 to sway with its weight each time the operator supplies the floor soil. The floor soil bridging phenomenon in the floor soil tank 54 can be prevented. In particular, when soil that is likely to cause bridging phenomena such as paddy soil is used as the floor soil, the floor soil can be fed out properly. Further, the floor soil tank 54 can be shaken by the operator touching the floor soil tank 54 with a scoop or the like .

Top view showing the seeder Side view showing the seeder The top view which shows the principal part of the seedling feeder supply device Side view showing essential parts of seedling feeder A perspective view showing a lower receiving plate, an upper receiving plate and a dropping plate Side view showing the seeder

One embodiment of the present invention will be described below.
As shown in FIGS. 1 and 2, the seeder (1) includes a transport path (3) for transporting a seedling device (2) such as a rectangular seedling box for paddy rice seedling in one direction, and the transport path. (3) Conveying path by feeding out seedling containers (2) stacked in a plurality of layers in order from the upper side to the conveying path (3) in order, supported from above, sequentially from the upper side of the conveying path (3) (3) A seedling feeder supply device (4) to be supplied above, a floor soil filling device (6) for filling the seedling device (2) with floor soil, and an irrigation device for irrigating the seedling device (2) packed with floor soil (29), a seeding device (7) for seeding the seedling device (2), and a soil covering device (8) for covering the seedling device (2). Each of the seedling feeder supply device (4), floor soil filling device (6), sowing device (7) and soil covering device (8) can be installed independently, independently of the other devices. It is supported by a total of four legs (9, 10). The left and right leg portions (10) on the front side of the soil covering device (8) can be protruded downward from the lower ends of the leg portions (10) via the arms (11) that rotate vertically. ) Are attached, and the seeding machine (1) is easily moved by lifting the seeding machine (1) by lifting the wheel (12) downward and lifting the other leg (9) from the ground. Can do.

  A conveyance path | route (3) is comprised by the conveyance guide (15) on either side, and becomes a structure which conveys the seedling raising device (2) which orient | assigned the longitudinal direction back and forth between this left and right conveyance guide (15). In the transport path (3), as a conveyor to be driven, a seedling feeder feeding conveyor (16) and a floor soil filling section transporting conveyor (17), which are belt type seedling transporting conveyors, and a roller type seedling transporting conveyor And a sowing part conveyance conveyor (18) and a soil covering part conveyance conveyor (28). Then, as a roller-type conveyor that rotates in a non-driven and free manner, a pre-flooring conveyor (62) is provided between the nursery vessel supply unit transporting conveyor (16) and the floor soiling unit transporting conveyor (17). An irrigation section conveyor (63) is provided between the filling section transport conveyor (17) and the sowing section transport conveyor (18), and the pre-soil covering conveyor (64) is provided between the sowing section transport conveyor (18) and the soil covering section transport conveyor (28). ) And a nursery device take-out conveyor (75) is provided on the rear side of the soil covering section conveyor (28).

  The seedling feeder supply device (4) includes a receiving plate (34) that receives a group of seedlings stacked from above and below from the lower side, and a second seedling container (2) from the bottom of the group of seedlings An upper receiving plate (35) received from the lower side, and a dropping plate (36) for forcibly dropping the lowest raising seedling device (2) of the group of raising plants, are provided on the upper receiving plate (35) manually. The seedling device group supplied to the first is handed over to the lower receiving plate (34), and the upper receiving plate (35) is used to transfer the second seedling device (2) from the lower seedling device group to the upper one (2). In the supported state, release the support of the lowest seedling device (2) of the seedling group by the lower receiving plate (34), and in that state, the drop plate (36) lowers the lowest seedling device (2) from above The seedling device group is separated from the seedling device group, dropped, fed out and supplied onto the seedling device supply section conveyor (16), and this operation process is repeated thereafter. Has nursery unit group the lower nursery unit (2) and supplies constructed on nursery unit supply section conveyor in order (16) by. The lower receiving plate (34), the upper receiving plate (35), and the dropping plate (36) are arranged at four positions on the front, rear, left and right sides of the nursery group so that the portions acting on the nursery group do not overlap in the front-rear direction. Next to the nursery device (2) previously provided on the nursery device supply unit transport conveyor (16), which is provided and acts from the left and right outer sides of the seedling device group, interlocked with the operation of the nursery device supply unit transport conveyor (16) It operates so that there is no gap between it and the nursery device (2) to be fed to the plant. The transmission structure will be described. The transfer sprocket is transmitted from the output sprocket (95) provided in the seedling feeder supply motor (94) to the transfer transmission chain (96) and the drive sprocket (38) and rotates integrally with the drive sprocket (38). The seedling feeder supply unit transport conveyor (16) is driven through the roller (37) on the side. Then, the drive sprocket (42) is transmitted from the drive sprocket (38) to the first counter shaft (41) through the chain (39) and the driven sprocket (40) and rotates integrally with the first counter shaft (41). ) From the chain (43), the driven sprocket (44) and the one-way clutch to the second countershaft (45), and drive bevel gears provided on the left and right ends of the second countershaft (45) ( 46), the left and right dropping shafts (48) are driven to rotate opposite to each other via the driven bevel gear (47). The dropping shaft (48) and the dropping plate (36) rotate as a unit, and the dropping plate (36) rotates in the direction of moving downward on the left and right inner sides. Further, each receiving plate shaft (52) positioned above the dropping shaft (48) from the other end of the dropping shaft (48) via the arm (49, 51), the link (50) and the like is predetermined. The lower receiving plate (34) and the upper receiving plate (35) that are swung within the angular range and rotate integrally with the receiving plate shaft (52) are swung, and the lower receiving plate (34) and the upper receiving plate (35) are swung. ) Are alternately applied to the seedling group, and the seedling group is lowered sequentially. Further, a manual supply lever (53) serving as a manual supply operation tool for manually rotating the second counter shaft (45) is provided, and the manual supply lever (53) allows the operator to arbitrarily supply the nursery device. The seedling raising device (2) can be dropped and supplied onto the partial transport conveyor (16).

  The floor soil filling device (6) feeds a predetermined amount of the floor soil tank (54) for storing the soil to be used as the floor soil, and drops the soil into the nursery device (2). Floor soil feeding belt (55) serving as a floor soil feeding tool to be supplied, leveling brush (19) serving as a leveling tool for leveling the floor soil overflowing on the nursery device (2), and inside the nursery device (2) The floor soil pressure roller (57), which is a floor soil pressure reducing tool that rushes into the floor and compresses the floor soil, and the amount of floor soil that changes and adjusts the amount of floor soil delivered by adjusting the clearance on the floor soil delivery belt (55) A leveling brush (19) is provided on the lower conveyance side of the floor soiling position on the conveyance path (3) on which the floor soil supply belt (55) supplies the floor soil. The floor soil pressure reducing roller (57) is positioned on the lower conveyance side of the leveling brush (19). The transmission structure of the floor soil filling device (6) will be described. The floor soil feeding belt (55) is driven by the floor soil feeding motor (20), and the floor soil feeding belt (55) is leveled through a gear transmission mechanism. The brush (19) is driven. In addition, the lower side of the transport that is transmitted from the output sprocket (97) provided in the floor soil transport motor (21) to the drive sprocket (60) via the transport transmission chain (59) and rotates integrally with the drive sprocket (60). The floor soiling section conveyor (17) is driven by the roller (61). The leveling brush (19) and the floor soil feeding belt (55) rotate in opposite directions. In addition, it is transmitted to a floor soil feeding belt (55), a leveling brush (19), and a floor soiling portion transport conveyor (17) by driving one of the floor soil feeding motor (20) or the floor soil transporting motor (21). It is good also as composition to do.

  The seeding device (7) has a seed tank (68) that stores seeds to be seeded (seed seeds), and seeds in the seed tank (68) are intermittently fed out by a predetermined amount and dropped into a seedling breeder (2). A seed feeding roller (69) serving as a seed feeding tool having a plurality of feeding grooves at a predetermined pitch on the outer periphery supplied at the sowing position, and the seed feeding roller (69 in contact with the outer peripheral surface of the seed feeding roller (69) ) Of the removal brush (70) that removes the seed overflowing from the feeding groove and the gap between the outlet of the seed tank (68) facing the seed feeding roller (69) is adjusted to supply the seed to the seed feeding roller (69). A seed supply adjustment handle (72) serving as a seed supply adjustment tool for changing and adjusting The transmission configuration of the seeding device (7) will be described. The output sprocket (66) provided in the seeding motor (65) is transmitted to the seed feeding roller (69) through the feeding transmission chain (67), and the output sprocket (66) ) To the removal brush (70) via the first removal chain (73) and the second removal chain (74), and from the output sprocket (66) to the seeding part conveyance conveyor (71) via the conveyance transmission chain (71). 18) is transmitted to the roller (75) on the lower conveyance side, and is transmitted from the roller (75) on the lower conveyance side to the roller (76) on the upper conveyance side via the chain (77). There is a seeding position between the roller (76) on the upper conveyance side and the roller (75) on the lower conveyance side. In addition, the first removal chain (73) and the conveyance transmission chain (71) are viewed in a side view so that the removal brush (70) and the sowing part conveyance conveyor (18) and the seed feeding roller (69) rotate in opposite directions. It is wrapped around to intersect. A guide body that covers the feeding groove is provided between the position of the removal brush (70) and the sowing position on the outer periphery of the seed feeding roller (69) so that the seed does not fall off from the feeding groove.

  The soil covering device (8) feeds the soil covering in the soil covering tank (84) for storing the soil to be covered with soil, and the soil covering in the soil covering tank (84) by a predetermined amount, drops it to the nursery device (2), and supplies it at the soil covering position. Adjust the clearance on the soil covering belt (85), the soil covering belt (85), the leveling plate (86) serving as a leveling device for leveling the soil covering on the nursery device (2), and the clearance on the soil covering belt (85). A soil covering amount adjusting lever that serves as a soil covering amount adjusting tool for changing and adjusting the amount of covering soil, and a leveling plate (8) 86) is located. The transmission configuration of the soil covering device (8) will be described. The soil covering belt (85) is driven by the soil covering motor (78), and the output sprocket (79) provided on the soil covering motor (78) is passed through the transport transmission chain (80). Then, it is transmitted to the roller (81) on the lower conveyance side of the soil covering section conveyance conveyor (28), and is transmitted from the roller (81) on the lower conveyance side to the roller (82) on the upper conveyance side through the chain (98). There is a soil covering position between the roller (82) on the upper conveyance side and the roller (81) on the lower conveyance side. In addition, the conveyance transmission chain (80) is wound so that it may cross | intersect in a side view so that a covering soil supply belt (85) and a covering soil conveyance conveyor (28) may rotate in a mutually reverse direction.

  On the front leg (10) of the soil covering device (8), a manual transport handle (92) serving as an operation tool for manually rotating the nursery container transport conveyor is held via a hook (93). With this manual transfer handle (92), the seeder (1) was stopped when the seeder (1) stopped due to a failure during the sowing with the seeder (7) or to end the seeding operation. At this time, the nursery device (2) can be manually conveyed and the nursery device (2) can be easily taken out from the seeder (1).

  The irrigation device (29) is provided on the upper side of the irrigation unit conveyor (63), and is provided with left and right support frames (100) respectively rising from the left and right conveyance guides (15) of the irrigation unit conveyor (63), and is arranged on the left and right. The left and right irrigation pipes (99) having a plurality of nozzles are both supported by the left and right support frames (100). The irrigation pipe (99), that is, the irrigation position, is arranged at a position closer to the conveyance of the irrigation unit conveyor (63).

  Each conveyor of the pre-flooring conveyor (62), the irrigation section conveyor (63), the pre-covering conveyor (64), and the nursery device take-out conveyor (75) is well transported at the front and rear ends of the left and right transport guides (15). By the fitting member (101) which fits into the apparatus of the side and conveyance lower side, it is provided so that attachment or detachment is possible independently with respect to the seeder (1) main body. Therefore, as shown in FIG. 6, by changing these conveyors to short ones, the distances between the devices can be changed. As a result, the sowing position and the soil covering device of the sowing device (7) in the next step from the irrigation position of the irrigation device. The distance to the soil covering position in (8) can be changed. In addition, the conveyors of the pre-flooring conveyor (62), the irrigation section conveyor (63), the pre-covering conveyor (64), and the nursery device takeout conveyor (75) are the lengths in the longitudinal direction of the nursery device (2) ( 60 cm). Therefore, even if there is a malfunction in the nursery device (2) in any of the seedling feeder supply device (4), floor soil filling device (6), seeding device (7), and soil covering device (8), Immediately after that, the seedling raising device (2) having a defect can be immediately taken out, wasteful work can be prevented, and floor soil, seeds and covering soil can be prevented from being wasted. Moreover, since the rear portion itself of the irrigation part conveyor (63) is set to be longer than the length (60 cm) in the longitudinal direction of the seedling device (2), the seedling device (2 ) Can be taken out immediately, and waste of seeds and soil covering can be prevented.

  Further, the irrigation device (29) is arranged between the seeding device (7) and the soil covering device (8) by assembling the irrigation part conveyor (63) between the seeding device (7) and the soil covering device (8). Can do. Or it can also be set as the structure which irrigates after soil covering by assembling the irrigation part conveyor (63) to the back side of the soil covering apparatus (8). In these cases, the irrigation unit conveyor (63) may be rearranged to change the length of the irrigation unit conveyor (63).

  As described above, the seeder (1) is a seeder for seeding the seedling device (2), and includes the transport path (3) for transporting the seedling device (2) in one direction. ) Along the transport path (3) from the upper side to the seedling device (2), the floor soil filling device (6), the seedling device (2), the seeding device (7) and the seedling device ( 2) is provided with a soil covering device (8) for covering soil, and the seedling device (2) is provided between the floor soil filling device (6) and the seeding device (7) or between the seeding device (7) and the soil covering device (8). By providing an irrigation device (29) for irrigation and rearranging the irrigation unit conveyor (63), the sowing position of the sowing device (7) in the next step and the covering position of the soil covering device (8) from the irrigation position of the irrigation device (29) The interval can be changed.

  Accordingly, by transporting the seedling device (2) along the transport path (3), the seedling device (2) is filled with the soil, sown, and covered. In addition, before the seedling device (2) is filled with floor soil and before covering, the seedling device (2) is watered. And, for example, when padding soil with poor water absorption, such as paddy soil, by changing the irrigation section conveyor (63) to a long one, the interval from the irrigation position to the sowing position and the covering soil position is greatly changed, Water that has been irrigated to the seedling container before sowing and covering soil can be absorbed without collecting on the upper surface of the floor soil. On the other hand, when soil with good water absorption is filled with floor soil, the irrigation unit conveyor (63) is replaced with a short one, and the seedling device is irrigated with the intervals from the irrigation position to the sowing position and the covering soil position until the sowing and covering soil. The water can be changed to an appropriate interval for absorbing water without collecting on the upper surface of the floor soil.

  Therefore, since the water irrigated to the seedling plant until sowing and covering soil regardless of the soil quality of the floor soil can be absorbed without collecting on the upper surface of the floor soil, the interval from the irrigation position to the sowing position and the covering soil position can be changed, The seeds sowed on the upper surface of the floor soil are confined between the floor soil and the cover soil together with the accumulated water, and it is possible to prevent the occurrence of oxygen deficiency and budding failure. Since it does not become unnecessarily large, the seeder becomes short and compact, and the operator supplies an empty seedling device (2) to the seedling device supply device (4) or the floor soil tank of the floor soil filling device (6). (54) Supplying floor soil, supplying seed to seed tank (68) of seeding device (7), supplying soil to covering soil tank (84) of soil covering device (8), taking out seedling device Seedling device that has been seeded from the conveyor (75) In operation of taking out the 2), can mutual work easily without significant movement, thereby improving the workability of the seeding operations.

  The upper end opening of the soil covering tank (84) is provided lower than the upper end opening of the seed tank (68), and the upper end opening of the floor soil tank (54) is provided lower than the upper end opening of the soil covering tank (84). ing. As a result, since the amount of use is large, an operator must frequently supply floor soil to the floor soil tank (54) with a scoop. This floor soil supply operation can be easily performed at a low level, and then the cover soil having a high supply frequency is used. The covering soil supply operation to the tank (84) can be easily performed. In addition, since the opening at the upper end of the seed tank (68) is high, it is possible to prevent the floor or cover soil from being accidentally supplied to the seed tank (68) when performing the floor soil supply operation or the cover soil supply operation. The seeding device (7) can be prevented from malfunctioning due to the supply of soil.

  The floor soil tank (54) is supported via a deformable rubber elastic body (113), and swings with its weight each time the operator supplies the floor soil. Thereby, the bridging phenomenon of the floor soil in the floor soil tank (54) can be prevented, and when the soil which is likely to cause the bridging phenomenon such as paddy soil is used as the floor soil, the floor soil can be properly fed out. The floor soil tank (54) can be shaken by the operator touching the floor soil tank (54) with a scoop or the like.

  In addition, when performing seeding work on a seedling device (110) whose left and right width is smaller than the left and right width of the conveyor (less than 30 cm), as shown in FIG. The regulation guide (112) may be attached to regulate the left and right positions of the nursery device (110) on the conveyor. At this time, the seeds fed out by the seeding device (7) are wasted at the left and right side portions, so that the receiving container (111) for receiving the seeds is disposed at the position on the left and right sides below the seeding device (7). do it.

  In the above, the length of the conveyor is changed by rearranging the conveyors before the floor soil filling (62), the irrigation section conveyor (63), the before soil covering conveyor (64), and the nursery device takeout conveyor (75). Although the method to do was demonstrated, it is good also as a structure which changes length as a structure which can expand and contract these conveyors. In this case, the conveyor may be reduced by dividing the left and right conveyance guides (15) of the conveyor into a plurality of front and rear parts, and the distance between the rollers of the conveyor may be changed.

In the above description, the seedling feeder supply device (4), the floor filling device (6), the irrigation device (29), the seeding device (7), and the soil covering device (8) are configured independently. (4) and the floor soil filling device (6) may be configured integrally, the seeding device (7) and the soil covering device (8) may be configured integrally, and only the irrigation unit conveyor (63) may be rearranged or expanded .

Claims (2)

A seeder for seeding a seedling device (2), comprising a transport path (3) for transporting the seedling device (2) in one direction, along the transport path (3) of the transport path (3) A floor soil filling device (6) for filling the seedling device (2) in order from the upper side, a seeding device (7) for sowing the seedling device (2), and a soil covering device (8) for covering the seedling device (2). The floor soil filling device (6) is provided with a floor soil tank (54) for storing culture soil as a floor soil, and the seeding device (7) is provided with a seed tank (68) for storing seeds to be sown, The soil covering device (8) is provided with a soil covering tank (84) for storing soil to be covered with soil, and the upper end opening of the soil covering tank (84) and the floor soil tank (54) are more open than the opening at the upper end of the seed tank (68). The upper end opening is placed at a low position, and the nursery device (2) is carried between the left and right transport guides (15) provided in the transport path (3). Configuration and then to the conveying path (3) is bed soil packed section conveyor (17) comprises a seeding unit conveyor (18) and the soil covering section conveyor (28), irrigation apparatus for irrigating a nursery unit (2) ( 29) is provided with an irrigation unit conveyor (63), a pre-soiling conveyor (64) is provided between the sowing unit transfer conveyor (18) and the soil covering unit transfer conveyor (28), and the irrigation unit conveyor (63) is By installing the irrigation device (29) and the seeding device (7), the distance between the seeding device (7) becomes longer than the length of the nursery device (2) in the transport direction, and the irrigation device by mounting. (29) and sowing apparatus (7) The distance between the seedling device (2) can be replaced with a shortening conveyor configured to be shorter than the length in the conveying direction of the nursery device (2), and the pre-soil conveyor (64) With the sowing device (7) An extension conveyor configured such that the distance between the soil device (8) is longer than the length of the nursery device (2) in the conveying direction, and the seeding device (7) and the soil covering device (8) by attaching And the irrigation section conveyor (63) can be replaced with a floor soil filling device (6). The irrigation section conveyor (63) can be replaced with a shortening conveyor configured to be shorter than the length of the nursery device (2) in the transport direction. A seeder configured to be selectively mounted between the seeding device (7) or between the seeding device (7) and the soil covering device (8).   The seeder according to claim 1, wherein the floor soil tank (54) is supported via a deformable elastic body (113).

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