JP2500381B2 - Submerged direct seeding device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a submerged direct seeding device for accelerating and penetrating a paddy rice seed to be sown in a submerged rice field that has been cultivated and cultivated to a predetermined depth into the paddy field. .

[0002]

2. Description of the Related Art Direct-seeding cultivation techniques (systems) in Japan are roughly classified into three systems: flooded direct-seeding system, eclectic direct-seeding system, and dry-field direct-seeding system. The seeding work in each system is mainly for submerged fields (paddy fields) in direct flooding, for eclectic direct sowing in fields that have been submerged without tilling after plowing, and in direct sowing for plowing or non-tilling fields. , Respectively. Although direct field sowing and eclectic direct sowing do not involve scratching, the application area is naturally limited due to water leakage and other factors, but it is considered that there are few limiting factors in the direct sowing method for flooded sowing.

At present, as the direct flooding method, mechanical row sowing,
Pneumatic spray jet sowing, mist spraying and helicopter spraying are available. All of these methods are methods in which water is dropped and seeded when the field that has been scratched has reached an appropriate hardness.

[0004]

In this case, if there is a difference in height between the rice fields, it is difficult to finish the hardness of the field uniformly,
In addition, when the central part of the field is cultivated to a low level, the degree of water drop becomes insufficient, a constant sowing depth cannot be obtained, and the stability of germination and seedling establishment is lacking.

[0005] Further, in terms of each direct sowing method, the mechanical sowing is the deepest sowing among the above methods and can be sowed in a striped manner, but high work efficiency cannot be obtained and the cost reduction effect is small. Pneumatic injection jet type seeding makes it difficult to add sufficient speed to the jetted seeds, and the seeding depth is shallow. The sowing method with a mist machine and the sowing method with a helicopter have high sowing work efficiency, but the sowing is uneven, and the sowing depth is shallow. For this reason, when heavy rain and strong winds are encountered during emergence, the seeds emerging are often floated on the submerged water and blown off, which is a big problem. In addition, if the seeding depth is shallow, the root system will be insufficiently developed, and will be prone to lodging damage due to typhoons and the like.

On the other hand, rice cultivation in Japan is under severe conditions caused by domestic and foreign price differences, and there is a strong demand for development of low-cost production technology. In order to produce rice at low cost, there is no choice but to shift from the current seedling transplanting (rice planting) cultivation technology system to the direct seeding cultivation technology system that achieves significant labor savings, and stable production. Realization of technology is required. The present invention has been made for the purpose of solving the above problems.

[0007]

In order to achieve the above-mentioned object, the present invention is directed to a submerged direct seeding apparatus for sowing paddy rice seeds in a submerged paddy field that has been ploughed and scraped. The outer peripheral portion is provided with a seed accommodating groove for accommodating and ejecting seeds, and the seed accommodating groove is provided with an accelerating plate for accelerating the seeds in the circumferential direction due to the rotation of the rotating body when the rotating body is rotated. It is characterized in that the seeds accelerated and released are guided to the rice field and penetrated to a substantially predetermined depth for sowing.

[0008]

With the above-described structure, the flooded direct seeding device of the present invention is equipped with a seeder incorporating a direct seeding device (unit) on a tractor in combination with, for example, a scraping work machine, and at the same time carrying out the scraping work on a paddy field. , The rice seeds are sown by penetrating the paddy field that has been scraped to a predetermined depth. In addition, a seeder incorporating a direct sowing device, for example, can be integrated into a scraping work machine to be used as a seeding machine dedicated to scraping and direct sowing. Direct seeding work is carried out.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to the drawings. In the figure, reference numeral 1 is a submerged direct seeding device (unit) for sowing paddy rice seeds in a submerged paddy field that has been plowed and scraped, and the submerged direct seeding device 1 is combined with a well-known scraping working machine (not shown). Attached to a tractor to perform paddy field scratching work, and at the same time perform seeding work on the scratched paddy field, or by incorporating this device 1 into a scratching work machine as an exclusive seeding and direct seeding seeder. It is constructed and the direct sowing work is performed on the paddy field that has been scratched at the same time as the scratching.

The direct flooding device 1 comprises a seed supply unit 2
And a seed discharging unit 3 and a seed guiding unit 4.

In the seed supply unit 2, a seed conveyor 21 having a large number of seed accommodating holes 22, 22, ...
The seed S is supplied from a seed hopper (not shown), rotated in the direction of the arrow, and the seed S is discharged from the transport end. A seed supply pipe 23 is disposed so as to face the conveying end portion of the seed conveyer 21, and a seed receiving port 24 and a seed discharge port 25 are formed in the seed supply pipe 23, and the seed discharge port 25 is connected to the seed discharge unit 3. I am facing. Rice seed S used here
Is preferably coated, and about three seeds S are stored in the seed storage hole 22 and supplied to the seed discharging unit 3.

In the seed discharging unit 3, the rotating body 31 has a plurality of spokes 33 on a rotating shaft 32 which is rotated by receiving power.
It is supported so as to rotate in the vertical direction via 33 ... A seed storage groove 34 for storing and discharging the seed S is provided on the outer peripheral portion of the rotating body 31, and the seed storage groove 34 is provided.
Is divided into a predetermined interval in the circumferential direction, and the seed S is accelerated when it is released in the circumferential direction by the rotation of the rotator 31.
The accelerating plates 35, 35, which are made of elastic material such as sponge, are fixed. The diameter of the rotator 31, the rotation speed, the installation (partition) interval of the acceleration plates 35, 35, ... With respect to the seed storage groove 34, etc. may be appropriately changed.

The seed guiding unit 4 is arranged at a position where the seed S is accelerated and released by the accelerating plate 35 by the rotation of the rotator 31, and the seed derivative 41 faces the outer peripheral portion of the rotator 31. A seed receiving opening 42 and a seed discharging opening 43 which are opened are provided. Then, the seeds S that have been vigorously released from the rotating body 31 are guided to the paddy field (rice field) that has been scratched, penetrate into a substantially predetermined depth (1-2 cm), and sow the seeds.

The seed conveyor 2 of the seed supply unit 2
The moving speed of 1 and the rotating speed of the rotating body 31 of the seed discharging unit 3 are such that the seed S discharged from the seed storing hole 22 of the seed conveyor 21 passes through the seed supply pipe 23 and the seed storing groove 3
It is desirable to synchronize so that it can be accommodated in 4. Also,
Since the accelerating plate 35 contacts the seed S in a state of vigorously colliding with the rotation of the rotating body 31 and accelerates and releases the seed S, it does not damage the seed S such as sponge and soft rubber. Material is preferable.

In the submerged direct seeding device 1 having such a structure, a seeder is constructed by incorporating this mechanism, and this seeder is combined with the scraping working machine and mounted on the tractor to simultaneously carry out the scraping work on the paddy field. Then, the paddy rice seed S is sown on the rice field P that has been scratched. In addition, the seeding machine is integrally incorporated into the scraping work machine to perform a direct seeding work on the paddy field P that has been scraped at the same time as the scraping, as a seeding machine dedicated to scraping and direct seeding. Of course, the seeding machine can be used alone, but in this case, it is necessary to introduce the seedling into the paddy field separately from the paddying work and perform the seeding work, which is disadvantageous in the work process.

During the sowing operation, the seeds S of about 3 grains continuously discharged from the conveying end portion of the seed conveyor 21 of the seed supply unit 2 enter the seed supply pipe 23 from the seed receiving port 24 and pass through the pipe. It is supplied from the seed discharge port 25 toward the seed discharging unit 3. In the seed discharging unit 3, the rotating body 31 is rotated by the rotating shaft 32 at a predetermined rotation speed, and the seed S is once housed in the seed housing groove 34 on the outer peripheral portion of the rotating body 31. It is discharged toward the seed guiding unit 4 in a state of being accelerated so as to collide with 35. In the seed guiding unit 4, the seed S is guided through the seed receiving opening 42, which has a large opening, through the inside of the seed derivative 41, and is vigorously discharged from the seed discharge port 43 to a predetermined depth (1-2 cm) on the rice field P. Penetrate and sow.

In this seeding work, about 3 seeds are spotted, and the seeding interval is determined by the moving speed of the machine body, the moving speed of the seed conveyor 21 and the rotating speed of the rotating body 31, and By changing the supply state of the seed S by the seed conveyor 21 and the rotation speed of the rotator 31, row seeding is also possible. In the above embodiment, 1
Although the case of row seeding has been described, this apparatus is used by setting it in a scratching working machine for a plurality of rows or by integrally incorporating it in the scratching working machine.

[0018]

As described above, the flooded direct seeding device of the present invention is provided with the seed storing groove 34 for storing and discharging the seed S on the outer peripheral portion of the rotating body 31 which rotates in the vertical direction.
By rotating the rotating body 31, the seed S is inserted into the seed storage groove 34.
Is provided with an accelerating plate 35 for accelerating when the
The seeds S accelerated and released by the rotation of the rotator 31 are guided to the rice field P by the seed derivative 41 so as to penetrate into the rice field P to a substantially predetermined depth and seeded, so that the following effects can be obtained.

[0019] A seeder incorporating a direct seeding device unit was installed on a tractor in combination with a scraping work machine to perform paddling work on paddy fields, and at the same time, to allow paddy rice seeds to penetrate to a specified depth at a desired depth. It is possible to carry out seeding at a high depth with high work efficiency and evenly sowing. And because the sowing depth is almost constant, the germination is good, and because the sowing depth is relatively deep, the root system is sufficiently developed, and it is less susceptible to lodging damage due to typhoons, etc., and stable rice cultivation is achieved. You can

[0020] In addition, a seeding machine with a direct seeding device unit was integrated into the scraping work machine and used as a seeding machine for scraping and direct sowing. Direct seeding work can be performed by making it penetrate into. Further, as a submerged direct sowing machine in which a direct sowing device unit is incorporated, direct sowing work can be performed independently on a submerged rice field.

[Brief description of drawings]

FIG. 1 is a perspective view of a flooded direct sowing unit.

FIG. 2 is a side view of the same.

3 is a sectional view taken along the line AA of FIG.

[Explanation of symbols]

1 Direct Water Seeding Device (Unit) 2 Seed Supply Unit 21 Seed Conveyor 22 Seed Storage Hole 23 Seed Supply Pipe 24 Seed Receiving Port 25
Seed discharge port 3 Seed discharge unit 31 Rotating body 32 Rotating shaft
33 Spoke 34 Seed accommodation groove 35 Accelerator plate 4 Seed induction unit 41 Seed derivative 42 Seed receiving opening 43 Seed discharge port S Seed (Coated seed of rice) P Padded rice field (rice field)

Claims (1)

(57) [Claims] 1. A submerged direct seeding device for sowing paddy rice seeds in a submerged paddy field that has been plowed and slaughtered, wherein seeds are contained in an outer peripheral portion of a rotating body that rotates in a vertical direction,
In addition to providing a seed storage groove for discharging, the seed storage groove is provided with an accelerating plate for accelerating the seed when it is circumferentially discharged by the rotation of the rotating body. A direct watering device for submerged water, characterized in that the seedlings are sowed that they are guided to the ground and penetrated to almost a predetermined depth.