JP4963460B2 - Sowing method and sowing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve such problems that: operation efficiency is deteriorated by a change in chemical concentration due to an increase or a decrease in the amount of watering; and the range of a change in the seeding ability per hour is narrow. <P>SOLUTION: A method for seeding is carried out as follows: bed soil is fed from the upper side of a seedling raising container A during transfer with a transfer table 1 by a bed soil feeder 3 and seeds are then fed with a seed feeder 75; cover soil is subsequently fed with a cover soil feeder 115 and watering is carried out from the upper side with a pair of a front and a rear watering parts 45 after feeding the bed soil and before feeding the cover soil; fresh watering is carried out in a watering apparatus 45A on the front side in either of the front or the rear watering parts 45 and suction type chemical spraying is conducted in the other watering apparatus 45B for chemical spraying on the rear side. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to an irrigation method and an apparatus for irrigating floor soil supplied to a seedling container.

Conventionally, floor soil is supplied from above the seedling container being transferred by the transfer stand by the floor soil supply device, then seeds are supplied by the seed supply device, and then the soil is supplied by the soil cover supply device. The structure of the sowing method in which irrigation and chemical spraying are performed by the irrigation unit from above before supplying the soil is known (see Patent Document 1).
JP 2003-116362 A

In the known example, the drug is sucked and irrigated by a single irrigation unit. Therefore, when the amount of irrigation water is increased or decreased due to the properties of the floor soil, the increase rate of the drug suction amount is the increase rate of the water amount. Therefore, the concentration of the medicine to be sucked must be changed, and there is a problem that the setting is very troublesome.
That is, for example, when irrigating 2000 ml per seedling container, if the aspirated drug is 500 ml, the remaining 1500 ml of water will be left, but this is simply increased by a factor of 2 to raise the seedling container When 4,000 ml per box is irrigated, the drug suction amount is not doubled to 1000 ml, and the drug concentration changes.
Therefore, even when it is desired to increase or decrease the amount of irrigation per box of seedling containers, the concentration of the drug to be sucked must be changed one by one, which makes the setting very troublesome.
Further, in the known example, since the water is irrigated by one irrigation unit having a drug suction unit, when the sowing quantity is small and the amount of irrigation is small, the water from the adjacent nozzle holes flows down and is evenly submerged. In addition, there is a problem that there is a limit to the increase in the amount of irrigation water due to the presence of the drug suction part, and there is a limit to the range in which the amount of irrigation can be changed.
Therefore, in a seeding device configured to be able to change the number of seedling containers that can be seeded per hour, there is a problem that the difference between the lowest possible box number and the highest possible box number cannot be increased.
In the present application, a pair of front and rear irrigation units are provided, and one is dedicated to the irrigation device for spraying medicines, so that irrigation can be easily performed and the range in which the irrigation amount can be changed is widened. .

In the present invention, floor soil is supplied from above the seedling container A being transferred by the transfer stand 1 by the floor soil supply device 3, and then seeds are supplied by the seed supply device 75, and then the soil is supplied by the soil covering supply device 115. After supplying the floor soil and before supplying the covering soil, water is irrigated from above by the pair of front and rear irrigation units 45, and fresh water irrigation is performed in one of the front irrigation devices 45 A of the front and rear irrigation units 45. When the side drug spraying irrigation device 45B sprays the suction-type drug and increases or decreases the irrigation amount per seedling container A, the spray amount of the drug mixture by the rear drug spraying irrigation device 45B is always a constant amount. And a seeding method in which the irrigation amount of the front irrigation device 45A is increased or decreased .
The present invention is characterized in that the transfer table 1 and bed soil supply device 3 and the seed feed device 7 5 are constituted freely work capacity changes, increases or decreases is configured capable of changing the number of nursery containers A capable seeded per hour, The irrigation amount of the front irrigation device 45A per box of the seedling container A is increased or decreased according to the number of transfer of the seedling container A per hour, and the concentration of the drug mixture in the irrigation device 45B for the rear drug spraying is Corresponding to the change in the amount of drug suction accompanying the increase / decrease of the spray amount of the drug spraying irrigation device 45B, the concentration is set to X% when transporting L boxes per hour according to the amount of drug suction in advance. This is a sowing method in which the concentration is corrected to Y% when transporting M boxes, and is set to the concentration of Z ...% when transporting N ... boxes per hour.
The present invention is provided above the transfer stand 1 for transferring the seedling container A, a floor soil supply device 3 for supplying floor soil, a seed supply device 75 for supplying seeds, and a covering soil supply device 115 for supplying covering soil, An irrigation device K constituted by a pair of front and rear irrigation units 45 is provided at a predetermined position of the transfer table 1, and one of the front and rear irrigation units 45 has a suction type irrigation device 45B having a drug suction unit 56A. In the case where either one is configured to perform fresh water irrigation by the irrigation device 45A not having the drug spraying drug suction part 56A, and the irrigation amount per one seedling container A is increased or decreased, The spraying amount of the drug mixture by 45B is always a constant amount, and the seeding device is configured to increase or decrease the irrigation amount of the front irrigation device 45A .

In the invention of claim 1, it may be increased or decreased only water front irrigation device 45A, can easily increase or decrease the irrigation amount, it is possible to improve the operability and workability, only the amount of water irrigation water system 45A Since the drug spraying by the drug spraying irrigation device 45B only needs to spray a certain amount of the drug having the same dilution concentration, the operability and workability can be improved.
In the invention of claim 2 , since the medicine is sprayed exclusively by the rear drug spraying irrigation device 45B, the irrigation amount of the front irrigation device 45A and the drug spraying amount of the rear drug spraying irrigation device 45B can be changed. The width can be increased, and as a result, the range of the number of seedling containers that can be sown per hour can be widened, work efficiency can be improved, and the drug concentration can be set in advance for dedicated drug spraying. Since it is only necessary to determine the amount of suction from the amount of water in the irrigation device 45B, this can be done easily.
In the third aspect of the invention, irrigation is performed by the two irrigation units 45, and the drug is sprayed exclusively by the rear drug spraying irrigation device 45B. Therefore, the width of the range in which the irrigation amount (drug amount) can be changed can be increased. As a result, the range of the number of seedling containers that can be sown per hour can be widened, work efficiency can be improved, and the drug concentration setting is also made in advance for a dedicated irrigation device for the rear drug spraying. Since it is only necessary to determine the suction amount from the amount of water of 45B, this can be done easily.

An example of a seeding device H for carrying out the method of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a transfer stand for transferring the seedling container A of the seeding device H, and although not shown, a transfer roll for transferring the seedling container A, etc. A transfer means is provided. Reference numeral 3 denotes a floor soil supply device provided on the transfer table 1, and the floor soil supply device 3 has a known configuration. A floor soil supply hopper 4 is provided at an upper portion, and a floor soil feed belt ( (Not shown) is provided.
A floor soil leveling device 6 is provided on the transfer platform 1 on the lower side in the transport direction of the floor soil supply device 3. The floor soil leveling device 6 includes a pair of front and rear front rotating brushes 7 and a rear rotating brush 8. The front and rear rotating brushes 7 and 8 level the floor soil supplied to the seedling raising container A while scraping a predetermined amount.
The front (upper side) rotating brush 7 has both ends of the front brush rotating shaft 12 mounted on a pair of left and right front arms 13, and the base of the front arm 13 is rotatable to the transfer table 1 by the front base rotating shaft 14. Install to. Similarly, the rear side (lower side) rotary brush 8 has both ends of the rear brush rotary shaft 15 mounted on the left and right rear arms 16, and the base of the rear arm 16 is transferred by the rear base rotary shaft 17. Attached to the base 1 so as to be rotatable.

The front rotating brush 7 and the rear rotating brush 8 are provided with a height adjusting device 20.
The front brush rotating shaft 12 and the rear brush rotating shaft 15 are inserted through the insertion holes 23 of the left and right frame side plates 21 provided in the transfer table 1. Lower portions of the traction support members 24 are respectively attached to both ends of the front brush rotation shaft 12 of the front rotation brush 7 projecting laterally from the frame side plate 21, and lower portions of the adjustment screw shafts 25 are screwed to the upper portions of the traction support members 24. When the adjusting screw shaft 25 is rotated, the pulling support member 24 moves up and down with respect to the adjusting screw shaft 25.
The upper portions of the left and right adjusting screw shafts 25 are rotatably attached to the connecting shaft 27 in the left and right direction, and when the dial 28 provided at the upper end of the adjusting screw shaft 25 is lifted, the connecting shaft moves upward, and the upper edge of the frame side plate 21 Is selectively engaged with any one of the plurality of switching engaging step portions 32 provided in the.

Accordingly, the irrigation device K is provided at a predetermined position of the transfer table 1. The irrigation apparatus K is configured by a pair of front and rear irrigation units 45, and one of the front and rear irrigation units 45 is configured to be fresh water irrigation, and the other irrigation unit 45 is configured to spray a drug.
In this case, those skilled in the art call the pre-irrigation before irrigation before the seed supply and the irrigation performed after the seed supply as post-irrigation before and after the seed supply device 75 described below before and after the irrigation unit 45. In the example, the lower irrigation unit 45 on the lower side of the front rotating brush 7 is the front irrigation device 45A, and the lower irrigation unit 45 of the seed supply device 75 is the irrigation device 45B for rear drug spraying.
The configuration of the front irrigation device 45A and the rear drug spraying irrigation device 45B is arbitrary, but the front irrigation device 45A forms a nozzle hole 47 at a predetermined interval in the pair of front and rear irrigation horizontal cylinders 46, and each irrigation horizontal One end of the cylindrical part 46 is closed by a plug 48, and the other end is attached to the connecting pipe 49 so as to be detachable and rotatable. The irrigation device 45B for spraying the rear drug is provided with a nozzle at a predetermined interval in one irrigation horizontal cylindrical part 46. A hole 47 is formed, one end of the irrigation horizontal cylinder portion 46 is closed by a plug 48, and the other end is detachably attached to the connecting pipe 49.

The connecting pipes 49 of the front irrigation device 45A and the rear drug spraying irrigation device 45B both connect the rising cylinder part 50 to the front and rear center positions, and one end of the upper horizontal cylinder part 51 is connected to the rising cylinder part 50. To do. The upper horizontal cylinder portion 51 is provided with a water meter (pressure gauge) 52, a regulating valve 53, an automatic opening / closing valve 54, a relief valve 55, and a hose connection portion 56. The adjustment valve 53 is opened and closed by a dial 53A to increase or decrease the amount of water flow. The automatic opening / closing valve 54 automatically closes the valve (not shown) to stop irrigation in a predetermined case. Further, the relief valve 55 automatically reduces the water flow pressure when the water flow pressure exceeds a predetermined value.
A hose 63 connected to a water source (not shown) is connected to the hose connection portion 56.
Further, a medicine suction part 56A for connecting a hose 63B connected to a tank 63A containing a medicine is provided in the upper horizontal cylinder part 51 of the irrigation device 45B for spraying the rear medicine. The medicine suction part 56A is a suction type structure based on the well-known Bernoulli principle, and has a nozzle 56B, a large-diameter negative pressure chamber 56C, and a small-diameter part 56D.

Note that the front irrigation device 45A does not require the drug to be sucked and the drug suction part 56A is omitted in order to increase the amount of water flow (FIG. 3).
The front and rear irrigation parts 45 constitute an irrigation pipe 57 by the irrigation horizontal cylinder part 46, the connecting pipe 49, the rising cylinder part 50 and the upper horizontal cylinder part 51, and the irrigation pipe 57 is attached to the irrigation frame 58 provided on the transfer table 1. It is configured to be detachable. The irrigation frame 58 is provided with a central support portion 60 that supports the upper horizontal cylinder portion 51 of the irrigation pipe 57 at an intermediate position on the upper and lower sides of the central frame 59 formed by a pair of left and right plate members. Arm portions 61 are provided on both the front and rear sides of the central frame 59, and the irrigation tube support portions 62 that support the irrigation horizontal tube portion 46 of the irrigation pipe 57 are provided on the arm portion 61.
In the irrigation pipe 57, each part of the irrigation pipe 57 is placed on the central support part 60 and the irrigation cylinder support part 62 of the irrigation frame 58, a cover 65 is placed above the irrigation pipe 57, and the cover 65 is placed on the irrigation frame. It is fixed to 58 with a fastening tool 66.

Therefore, since the irrigation pipe 57 is simply placed on the irrigation frame 58 and pressed by the cover 65, the irrigation pipe 57 is sandwiched up and down by the irrigation frame 58 and the cover 65, and can be attached and detached while having a simple support structure. It becomes easy.
Thus, the change in the amount of irrigation caused by the properties of the floor soil of the irrigation device K is such that the spray amount of the drug mixture in the irrigation device 45B for the rear drug spraying is made constant in advance, and the irrigation amount of the front irrigation device 45A is changed. Increase / decrease and set to irrigate a predetermined amount of water.
That is, the irrigation amount of the front irrigation device 45A changes approximately proportionally by opening and closing of the valve, but the drug suction amount of the irrigation device for rearward drug application 45B does not stably change in proportion, so The spray amount of the drug mixed solution of the device 45B is set to a predetermined amount in advance, and the irrigation amount of the front irrigation device 45A is increased or decreased.

For example, when irrigating 2000 ml per seedling container A, the spray amount of the drug mixture in the rear drug spraying irrigation device 45B is always set to a fixed amount of 500 ml, and the irrigation amount of the front irrigation device 45A is 1500 ml. And
Next, when irrigating 3000 ml per seedling container A, the spray amount of the drug mixture in the rear drug spraying irrigation device 45B is always set to a fixed amount of 500 ml, and the irrigation of the front irrigation device 45A is not changed. Increase the volume by 1000 ml to 2500 ml.
Therefore, it is not necessary to change the dilution rate of the drug mixture every time the irrigation amount is increased or decreased, thereby facilitating the setting of irrigation and drug spraying.
Next, since the sowing apparatus H is configured so as to be able to sow seedling containers A of 300 to 900 boxes per hour, for example, the transfer table 1, the floor soil supply apparatus 3, the seed supply apparatus 75, etc. Arbitrary means such as driving by changing the rotational speed by an inverter motor (not shown) or changing the gear ratio by replacing the gear that transmits the rotation of the rated rotary motor (not shown) Thus, the operation speed and the supply amount can be changed. Similarly, the irrigation unit 45 also changes the irrigation amount according to the number of seedling containers A to be seeded.

In this case, the irrigation amount is changed by setting the reference irrigation amount in advance and increasing / decreasing the irrigation amount of the front irrigation device 45A and the irrigation amount of the rear drug spraying device 45B with respect to the reference irrigation amount. At the same time, the concentration of the drug mixture in the irrigation device 45B for spraying the rear drug is changed so as to be corrected to the actual drug spray amount.
That is, the irrigation amount of the front irrigation device 45A changes approximately proportionally by opening and closing of the valve, but the drug suction amount of the irrigation device for rearward drug application 45B does not stably change in proportion, so The spray amount of the drug mixture in the device 45B corresponds to the predetermined concentration with respect to the spray water flow rate.
For example, when irrigating 2000 ml per seedling container A, when 300 boxes are transferred per hour, the amount of sprayed drug mixture in the rear drug spraying irrigation device 45B is a certain amount of 500 ml, and the front irrigation device Based on this, the irrigation amount of 45A is set to 1500 milliliters, and when it is 600 boxes per hour, the transfer speed of the seedling container A by the transfer stand 1 becomes faster, so 500 milliliters of drug mixture per seedling container A per box In order to allow the liquid to enter, the spray amount of the drug mixture from the nozzle hole 47 of the rear drug spraying irrigation device 45B is set to 1000 milliliters. Similarly, the irrigation amount of the front irrigation device 45A is 3000 milliliters per seedling container A. And it is sufficient.

Similarly, at 900 boxes per hour, the transfer speed of the seedling container A by the transfer stand 1 is increased by 3 times, so that the spray amount of the drug mixture from the nozzle hole 47 of the rear drug spraying irrigation device 45B is 1500 ml. The irrigation amount from the nozzle hole 47 of the front irrigation device 45A may be 4500 milliliters.
And when increasing / decreasing the spray amount of the irrigation device 45B for the rear drug sprayer, the drug suction amount does not change stably and proportionally with respect to the flow rate of water, so the concentration of the suction drug is set in advance according to the drug suction amount. For example, when transferring L boxes (300 boxes) per hour, the concentration is set to X%. When transferring M boxes (600 boxes) per hour, the concentration is set to be corrected to Y%. When the box (900 boxes) is being transferred, the correction is set in advance to the density of Z...%.
Therefore, even if the concentration of the drug mixture is changed, the drug can be easily prepared because only the drug having the set concentration is mixed in advance.

In addition, the irrigation device 45B for spraying the rear side of the medicine sprays the medicine mixed solution exclusively and sprays it with a fixed amount set for the irrigation, so that it is sucked and sprinkled by the single medicine suction part 56A.
That is, when the medicine is sprayed by the single irrigation unit 45 as in the conventional case, the suction amount is increased as the irrigation amount is increased, and the water and the drug are passed through the medicine suction unit 56A from 1500 ml to 6000 ml. As a result, the limit of the kind of medicine suction part 56A will exceed the limit, and as a result, the range of the number of seedable boxes per hour will be narrowed. The irrigation device 45B only needs to spray the drug mixture, and the spray volume may be in the range of 500 ml to 1500 ml, for example.

Thus, the irrigation frame 58 is provided with a central support portion 60 that supports the upper horizontal cylinder portion 51 of the irrigation pipe 57 at an intermediate position on the upper and lower sides of the central frame 59 formed by a pair of left and right plate members. Arm portions 61 are provided on both the front and rear sides of the central frame 59, and the irrigation tube support portions 62 that support the irrigation horizontal tube portion 46 of the irrigation pipe 57 are provided on the arm portion 61.
In the irrigation pipe 57, each part of the irrigation pipe 57 is placed on the central support part 60 and the irrigation cylinder support part 62 of the irrigation frame 58, a cover 65 is placed above the irrigation pipe 57, and the cover 65 is placed on the irrigation frame. It is fixed to 58 with a fastening tool 66.
Therefore, since the irrigation pipe 57 is simply placed on the irrigation frame 58 and pressed by the cover 65, the irrigation pipe 57 is sandwiched up and down by the irrigation frame 58 and the cover 65, and can be attached and detached while having a simple support structure. It becomes easy.
Therefore, the cover 65 only needs to have a shape that can hold the irrigation pipe 57 from above, and the upper top plate 67 that contacts the upper horizontal tube portion 51 and the irrigation horizontal tube portion that is connected to the upper top plate 67. It is only necessary to have a nozzle abutting portion 68 that abuts the upper surface of 46 and an opening window portion 69 that avoids the water meter 52 and the like. The opening window 69 is formed in such a size that it can be removed so as to be pulled upward while avoiding the water meter 52. Reference numeral 70 denotes a nut to which a fastener 66 provided on the irrigation frame 58 is screwed.
Reference numeral 72 denotes a front wall corner leveling device for leveling the floor soil at the corner of the front wall 33 of the seedling raising container A.

Therefore, the seed supply device 75 is provided on the lower side of the irrigation device 45A. The seed supply device 75 detachably attaches a seed supply hopper 78 to a side plate 77 provided above the transfer table 1 so as to freely move up and down. Although illustration is omitted, an auxiliary hopper may be provided above the seed supply hopper 78.
The lower part of the seed supply hopper 78 is provided with a rear guide plate 79 and a front guide plate 80 in a funnel shape. The lower end of the rear guide plate 79 is provided at a predetermined interval with respect to the front guide plate 80 to form a hopper supply port 81. A supply amount adjusting plate 82 for adjusting the opening amount of the hopper supply port 81 is movably attached to the lower surface of the rear guide plate 79.
In the vicinity of the front end of the front guide plate 80, a horizontal shaft feed roll 84 having a large diameter in the left-right direction is provided. On the outer peripheral surface of the horizontal axis feeding roll 84, a horizontal groove-shaped feeding recess 85 parallel to the generatrix direction (left and right direction) is formed on the entire circumference at a desired interval. The feeding recess 85 is formed in such a width that the seed fits in one or two rows in the circumferential direction in the circumferential direction. Slits 86 are provided on the entire circumference of the outer peripheral surface of the horizontal shaft feed roll 84 at intervals shorter than the lateral width of one seed in the generatrix direction (left-right direction). The depth of the slit 86 is formed to be substantially the same as or slightly deeper than that of the feeding recess 85, and a scraping knife 87 is fitted in each slit 86.

A rotating leveling brush 88 is provided at a position above the horizontal axis feeding roll 84 (precisely, just behind the horizontal axis feeding roll 84), and the rotary leveling brush 88 is driven and rotated by any means. Then, excess seed that does not fit into the feeding recess 85 and rotates together with the horizontal axis feeding roll 84 is swept back to the seed reservoir 89 on the supply port hopper supply port 81 side.
An opening 90 is formed in the seed reservoir 89, and a shutter 91 is provided in the opening 90. The shutter 91 is attached to the lower surface of the front guide plate 80 by a mounting knob 92 that can be adjusted to a distance with respect to the horizontal axis feeding roll 84 and is detachable.
A discharge derivative 93 is provided below the opening 90. The discharge derivative 93 is provided to prevent the discharge derivative 93 from being scattered around the seed supply device 75 when discharging the residual seed remaining in the seed reservoir 89, and is formed by a plate member. And attached to the full width between the left and right side plates 77 of the seed supply device 75. The discharge derivative 93 is provided with an upwardly inclined upper inclined portion 94 at the upper portion so as to be on the upper side in the upper portion, and at a lower portion of the upper inclined portion 94 with a predetermined interval with respect to the outer peripheral surface of the horizontal shaft feeding roll 84. The vertical plate portion 95 is formed, and a guide path 96 is formed between the vertical plate portion 95 and the outer peripheral surface of the horizontal shaft feeding roll 84. The lower part of the vertical plate part 95 is formed in a lower inclined part 97 that descends rearward, and guides seeds to fall from a guide path 96 to a seed collection container 98 (box) provided on the transfer table 1 below the seed supply device 75. .

Reference numeral 99 denotes a seed guide cover that is provided on the rear surface of the horizontal shaft feed roll 84 and guides the seed fitted in the feed recess 85 so as not to be damaged from the upper position to the lower position.
Therefore, a seed dropping rotary brush 105 is provided on the lower side of the seed supply device 75. A soil covering supply device 115 is provided on the lower side of the seed dropping rotary brush 105. The soil covering supply device 115 has a known configuration, and is configured by providing a supply hopper 116 at an upper portion and a soil covering feeding belt (not shown) below the supply hopper 116. A soil covering leveling brush 118 is provided on the lower side of the soil covering supply device 115.

(Operation of Example)
When the seedling container A to which the floor soil has been supplied is supplied to the transfer table 1, it is transferred by the transfer roll 2 and scraped off by a predetermined amount when passing under the front rotating brush 7.
Next, when the seedling container A reaches the lower side of the front irrigation device 45A, the seedling container A is irrigated. When the seedling container A reaches the lower side of the seed supply device 75, the seed supply is received and the drug is supplied by the irrigation device 45B for spraying the rear drug. When the seedling rotary brush 105 drops seeds on the upper surface of the peripheral wall of the seedling container A and the seedling container A reaches the lower side of the soil covering supply device 115, the seeding container is supplied and the seeding operation is completed.
In this case, the irrigation device K provided at a predetermined position of the transfer table 1 is constituted by a pair of front and rear irrigation units 45, one of the front and rear irrigation units 45 is fresh water irrigation by the front irrigation device 45A, and the other is Since the medicine is sprayed by the rear drug spraying irrigation device 45B, fresh water is irrigated by one of the front irrigation devices 45A, and the drug is sprayed by the other rear drug irrigation device 45B. This makes it easy to set the irrigation amount.

That is, simply opening and closing the open / close valve in order to change the irrigation amount by the single irrigation unit 45 does not increase the amount of water that the drug suction unit 56A passes through and the drug suction amount in proportion to each other. In this application, the irrigation apparatus K is composed of a pair of front and rear irrigation units 45, and in the case of changing the normal irrigation amount, the irrigation device K is used for spraying the rear drug. The spray amount of the irrigation device 45B is always constant, and it can be dealt with by simply increasing or decreasing the irrigation amount of the front irrigation device 45A.
Accordingly, the setting of the irrigation amount due to the properties of the floor soil such as drainage and water retention, the amount of the floor soil of the seedling container A, etc., can be made simply by setting the irrigation amount.
For example, when setting the case of irrigating 2000 ml per box of seedling container A as a reference, the amount of sprayed liquid mixture in the backside drug spraying irrigation device 45B is always set to a constant amount of 500 ml, the front side In the case where the irrigation amount of the irrigation device 45A is 1500 ml, and then irrigates 3000 ml per seedling container A, the spray amount of the drug mixture in the rear drug spraying irrigation device 45B does not always change to 500 ml. In the case where the irrigation amount of the front irrigation device 45A is increased to 2500 ml and fresh water 1000 ml, and on the contrary, 1500 ml of irrigation device A for one seedling container A is irrigated, Always change the irrigation amount of the front irrigation device 45A to 1,000 milliliters without changing it with 500 milliliters. Fresh water and it is sufficient to decrease 500 ml as Torr.

Therefore, it is not necessary to change the dilution rate of the drug mixture every time the irrigation amount is increased or decreased, thereby facilitating the setting of irrigation and drug spraying.
Thus, since the seeding device H is configured so as to be able to sow seedling containers A of 300 to 900 boxes per hour, for example, the transfer table 1, the floor soil supply device 3, the seed supply device 75, etc. Work by any means, such as changing the number of rotations by a motor (not shown) or driving, or changing the gear ratio by exchanging gears that transmit the rotation of a rated rotation motor (not shown) Similarly, the irrigation unit 45 also changes the irrigation amount depending on the number of seedling containers A to be seeded. The mixing ratio of the drug to be performed is set in advance as described above, and the irrigation amount of the front irrigation device 45A and the irrigation device 45B for spraying the rear drug is increased or decreased so as to irrigate a predetermined amount of water. And the back side The concentration of the drug mixture in the drug spraying irrigation device 45B is changed to set the substantial drug spray amount.

  For example, when irrigating 2000 ml per seedling container A while transferring 300 boxes per hour, the spray amount of the drug mixture in the rear drug spraying irrigation device 45B is 500 ml, and the front irrigation device Based on this, the irrigation amount of 45A is set to 1500 milliliters, and when it is 600 boxes per hour, the transfer speed of the seedling container A by the transfer stand 1 is increased by 2 times, so 500 milliliters of medicine per container of the seedling container A In order to put the mixed solution, the spray amount of the drug mixture from the nozzle hole 47 of the rear drug spraying irrigation device 45B is increased by 500 ml and sprayed by 1000 ml. Similarly, the irrigation amount per box of the seedling container A is The amount of irrigation from the nozzle hole 47 may be doubled to 3000 ml so that 1500 ml can be inserted.

Similarly, at 900 boxes per hour, the transfer rate of the seedling container A by the transfer table 1 is increased by 3 times, so that the spray amount of the drug mixture from the nozzle hole 47 of the rear drug spraying irrigation device 45B is the standard. The amount of irrigation from the nozzle hole 47 of the front side irrigation device 45A may be set to 4500 milliliters, which is three times the reference, to 1500 milliliters.
And when increasing / decreasing the spray amount of the irrigation device 45B for the rear drug sprayer, the drug suction amount does not change stably and proportionally with respect to the flow rate of water, so the concentration of the suction drug is set in advance according to the drug suction amount. For example, when the spray amount of the drug mixture liquid from the nozzle hole 47 is 500 milliliters, the concentration is X%, and when the spray amount of the drug mixture liquid nozzle hole 47 is 1000 milliliters, the concentration is Y%. When the spraying amount of the nozzle hole 47 is 1500 ml, the Z% concentration may be used.

  Thus, in order to irrigate, in the medicine spraying by the single irrigation unit 45, water and medicine from 1500 ml to 6000 ml must pass through the medicine suction part 56A having the nozzle 56B and the small diameter part 56D, There is a limit to increasing the amount of water flow, and as a result, the range of the number of boxes that can be seeded per hour is also narrowed. However, according to the method of the present application, the spray amount of the drug mixture is, for example, 500, as described above. Since the range from milliliters to 1500 milliliters is sufficient, it is possible to cope with the single medicine suction part 56A sufficiently, and in addition, since the medicine suction part 56A can be omitted in the front irrigation device 45A, the amount of water flow can be increased. The range of the number of boxes that can be seeded per hour can also be widened.

Thus, irrigation by the irrigation unit 45 includes pre-irrigation before irrigation before supplying seeds and post-irrigation after irrigation of seeds.
The irrigation part 45 covers the irrigation pipe 57 from above the irrigation pipe 57 by placing the irrigation horizontal cylinder part 46 and the upper horizontal cylinder part 51 on the central support part 60 and the irrigation cylinder support part 62 of the irrigation frame 58. Since 65 is placed and the cover 65 is fixedly attached to the irrigation frame 58 with the fastening tool 66, the irrigation pipe 57 can be easily attached and detached, and the pre-irrigation and the post-irrigation operations can be easily selected.
Further, since the irrigation pipe 57 is simply placed on the irrigation frame 58 and pressed by the cover 65, the irrigation pipe 57 is sandwiched up and down by the irrigation frame 58 and the cover 65. It becomes easy.
In addition, when the front irrigation before the seed supply device 75 is selected, the rear drug spraying irrigation device 45B may be continuously provided on the transfer table 1 immediately below the front irrigation device 45A.

The sowing apparatus whole side view. A side view of the soil leveling device. The perspective view of an irrigation apparatus (front irrigation apparatus). The same side view. The perspective view of an irrigation apparatus (rear irrigation apparatus). Schematic of a suction part. Sectional drawing of a suction part. The side view of a seed supply apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Transfer stand, 3 ... Floor soil supply device, 4 ... Floor soil supply hopper, 6 ... Soil leveling device, 8 ... Rear side rotating brush, 7 ... Front side rotating brush, 15 ... Rear side brush rotating shaft, 16 ... Rear Side arm 17 ... Rear base rotary shaft, 12 ... Front brush rotary shaft, 13 ... Front arm, 14 ... Front base rotary shaft, 20 ... Height adjusting device, 21 ... Frame side plate, 22 ... Cover, 24 ... Traction support 25, adjusting screw shaft, 26 ... screw nut, 27 ... connecting shaft, 28 ... dial, 29 ... engaging nut, 30 ... locking nut, 31 ... spring, 33 ... front wall, 35 ... interlocking rod, 36 DESCRIPTION OF SYMBOLS ... Mounting shaft, 37 ... Long hole, 38 ... Screw hole, 39 ... Guide, 40 ... Brush gear, 41 ... Brush transmission gear, 45 ... Irrigation part, 45A ... Front side irrigation device, 45B ... Rear side drug spraying irrigation device 46 ... Irrigation horizontal cylinder part, 47 ... Nozzle hole, 48 ... Stopper, DESCRIPTION OF SYMBOLS 9 ... Connection pipe, 50 ... Standing cylinder part, 51 ... Upper side horizontal cylinder part, 52 ... Water meter (pressure gauge), 53 ... Control valve, 54 ... Automatic opening / closing valve, 55 ... Relief valve, 56 ... Hose connection part, 56A ... medicine suction part, 56B ... nozzle, 56C ... negative pressure chamber, 56D ... small diameter part, 57 ... irrigation pipe, 58 ... irrigation frame, 59 ... center frame, 60 ... center support part, 61 ... arm part, 62 ... irrigation cylinder Supporting part, 63 ... hose, 63A ... tank, 63B ... hose, 65 ... cover, 66 ... fastening device, 67 ... upper top plate, 68 ... nozzle contact part, 69 ... opening window part, 70 ... nut, 72 ... 75. Seed supply device, 77 ... side plate, 78 ... seed supply hopper, 79 ... rear guide plate, 80 ... front guide plate, 81 ... hopper supply port, 82 ... supply amount adjusting plate, 83 ... Adjustment dial, 84 ... Shaft feeding roll, 85 ... feeding recess, 86 ... slit, 87 ... scraping knife, 89 ... seed reservoir, 90 ... opening, 91 ... shutter, 92 ... mounting knob, 93 ... discharge derivative, 94 ... upper inclined portion 95 ... Vertical plate portion, 96 ... Guideway, 98 ... Seed collection container, 99 ... Seed guide cover, 115 ... Covering soil supply device, 116 ... Supply hopper.

Claims (3)

The bed soil is supplied from the upper side of the seedling container A being transferred by the transfer stand 1 by the floor soil supply device 3, then the seed is supplied by the seed supply device 75, and then the soil is supplied by the soil cover supply device 115. After supplying soil, before supplying the covering soil, water is irrigated from above by a pair of front and rear irrigation units 45, and fresh water irrigation is performed in one of the front irrigation devices 45A of the front and rear irrigation units 45. In the irrigation device 45B, when the suction-type drug is sprayed and the irrigation amount per seedling container A is increased or decreased, the spray amount of the drug mixture by the rear drug spraying irrigation device 45B is always constant, and the front irrigation A seeding method in which the irrigation amount of the device 45A is increased or decreased. According to claim 1, wherein the transfer table 1 and bed soil supply device 3 and the seed feed device 7 5 are constituted freely work capacity changes, increases or decreases is configured capable of changing the number of nursery containers A capable seeded per hour The irrigation amount of the front irrigation apparatus 45A per box of the seedling container A is increased or decreased in accordance with the number of transfer of the seedling container A per hour, and the concentration of the drug mixture in the irrigation apparatus 45B for the rear drug spraying is Corresponding to the change in the amount of drug suction accompanying the increase / decrease of the spray amount of the side drug spraying irrigation device 45B, the concentration is set to a concentration of X% in advance when the L box is transported per hour according to the drug suction amount. A sowing method in which a correction is set to a concentration of Y% when M boxes are transferred per hit, and a concentration of Z is set to N when the boxes are transferred per hour. Above the transfer stand 1 for transferring the seedling container A, a floor soil supply device 3 for supplying floor soil, a seed supply device 75 for supplying seeds, and a cover soil supply device 115 for supplying cover soil are provided. An irrigation device K constituted by a pair of front and rear irrigation units 45 is provided at a predetermined position, and one of the front and rear irrigation units 45 is a suction type drug spraying irrigation device 45B having a drug suction unit 56A. The other is configured to perform fresh water irrigation by the irrigation device 45A that does not have the drug spraying drug suction unit 56A, and when increasing or decreasing the irrigation amount per one seedling container A, the drug mixing by the rear drug spraying irrigation device 45B A seeding device configured such that the amount of liquid sprayed is always constant, and the amount of irrigation in the front irrigation device 45A is increased or decreased.

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