JPH064A - Method for sod-seeding - Google Patents

Abstract

PURPOSE:To suppress the thick growing of weeds and save power and labor required for sod-seeding by embedding the weeds in soil according to the shallow plowing, forming a seeding furrow, sowing seeds and covering the seeded furrow with soil. CONSTITUTION:The surface of a non-tilled field is shallowly plowed with a rotary harrow 5 and a seeding furrow is formed with furrowing pawls 14 to sow seeds in the seeding furrow. The seeded furrow is then covered with soil. Thereby, the whole surface of the non-tilled field is shallowly plowed and weeds on the ground surface are scraped off, stirred and embedded. Thereby, unevennesses on the field surface are eliminated and the seeding depth and soil cover can be made nearly constant.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a no-till sowing method in which a sowing groove is formed in a state where a no-till paddy surface is shallowly plowed, and the seed groove is sown and covered with soil.

[0002]

2. Description of the Related Art Conventionally, a method has been already known in which the entire surface of a field is cultivated by rotary tilling, and then seed rice is directly sown in the field. In addition, a non-tillage sowing machine is also known in which seeds are sown in a no-tillage field, and the side portions thereof are plowed and flipped up to cover the seeds on which the cultivated soil is sown.

[0003]

The known seeding method described above requires plentiful labor and time for the preparation of seeding because it cultivates the entire field and crushes the soil. Moreover, the seeding work requires labor saving. It was difficult. In order to solve such a problem, when a sowing groove was formed in a no-tillage field, and sowing was performed in the sowing groove to cover the soil, weeds grew from the untreated no-till field scene between the sowing rows. In addition, the seeds of the weeds that had fallen on the no-till surface also germinated and grew in a method of covering the soil that had been sowed up while excavating the ditch after sowing in a no-till field scene.

[0004]

[Means for Solving the Problems] The present invention is to bury the soil in the soil by shaving and weeding the weeds on the paddy field by shallowly plowing the no-till paddy field surface, and then forming a sowing groove, The above-mentioned problems were solved by sowing the seeds and covering them with soil.

[0005]

[Operation] Plowing the surface of a no-till field in a shallow and full-scale manner
Following that, when the seeding ditch is excavated, and the seeding ditch is sown and covered with soil, the entire surface of the no-till field is plowed shallowly, the weeds on the ground surface are scraped off, and they are agitated and buried. It is possible to suppress overgrowth for a long period of time, and it is easy to make the sowing depth and covering soil almost constant by eliminating the unevenness in the field scene after shallow plowing, thereby making it possible to align the germination time well. Can be grown up.

[0006]

An embodiment of the present invention will be described with reference to the drawing machine. A rotary tiller 3 is connected to a rear portion of a tractor 1 via a top link 2a and left and right lower links 2b, 2b so as to be vertically movable. It is supported by a lift arm 4a and a lift rod 4b so that its height can be adjusted, a rotary harrow 5 is mounted on the cultivating shaft of the rotary cultivating device 3, and a hitch metal fitting is attached to the rear part of the tool bar 6, and the PTO shaft of the tractor 1 is attached. An input shaft projecting forward from a gear case provided in the central upper part of the rotary tiller 3 is interlockingly connected by a yoke joint, and a shaft 3b extending laterally from the gear case and transmitting the tiller shaft through a chain case 3a. Drives the output pulley 11.

The groove forming device 7 includes a chain case 8 at the center,
A laterally extending groove groove shaft 9 supported by bearings at its lower portion, an input pulley 10 operatively connected to the output pulley 11 via a belt 12, and the groove groove shaft 9
From the claws which are respectively screwed to a plurality of mounting studs 13 radially protruding from 4 to 6 or more bosses mounted laterally adjustable (inter-row adjustment) at intervals Consisting of a plurality of grooving claws 14 ...
The grooved claws 14 are curved rearward on the ground side as shown in FIG. 1 in a side view, and when viewed from the front-rear direction, the tips of the adjacent ones protruding from the respective bosses are alternately curved leftward and rightward. The front end of the mounting frame 7a which is attached and is integral with the chain case 8 is connected to the hitch metal fitting 4 by a connecting pin.

The lower surface of the lateral frame extending laterally from the supporting frame 7a extending laterally from the rear portion of the mounting frame 7a has a downwardly U-shaped cross section. A cover 15 which straddles the groove shaft 9 and whose front part and rear part are close to the field scene is attached to each group of grooving claws, and both side plates of this cover 15 have the grooving claws 14 ...
The distance is narrowed (for example, about 8 cm) so as to be close to both sides of the rotation locus of the tip of the, and the front part follows the rotation locus from the middle part of the peripheral plate, but the rear part bulges backward. And a stable sled 17 is screwed onto brackets 16 fixed to both side surfaces of the cover 15 so as to be adjustable in the vertical direction, and the grooving nail 14
The depth of the seeding groove A formed by ... is adjusted.

At the lower end of the rear portion of one side plate of the cover 15, a rake 18 descending and inclined toward the other side plate.
The rake 18 is mounted so as to face the seeding groove, and the rake 18 has a large number of sieve rods 20 ... Protruding from a support rod 19 in a comb-like shape and throwing of cultivated soil thrown by the grooving claws 14 ... The adjustment plate 19a fixed to both ends of the support rod 19 is supported by the fulcrum shaft 21 on the rear surface of the side plate, and the upper long hole 22 is horizontally supported by the bolt 23. Since it is screwed so that the tilt can be adjusted, the inclination angle of the rake 18 can be adjusted.

Further, a scraper 24 having an inverted V-shaped lower end is attached to the front lower end of the cover 15 near the front, and the scraper 24 is inclined backward like a plow and has a groove. Since the rotation locus of the claws 14 ... is close to the rear surface, the cultivated soil thrown backward by the grooving claws 14 ... is received by the scraper 24, and the cultivated soil is deposited at least immediately thereafter. The bottom surface of the inverted V-shaped groove formed by the scraper 24 is partially exposed.

The seeding and fertilizing device 25 is constructed by the mounting frame 7
A pair of left and right hoppers 26, 26 for seeds and fertilizers, which are paired on the lateral frame extending from the rear part to the both sides of the lateral frame, are arranged in the lateral direction at a large number of sets corresponding to each groove. It is installed independently and each set has a hopper 2
A delivery roll 27 facing the delivery openings at the bottom of 6, 26,
Each of the hoppers 26, 26 is composed of two conduits 28, ... Connected from the left and right of the feeding outlet, and these conduits 28 .. Is exposed on the seeding groove from the side immediately after the scraper 24. However, each hopper 26, 26
When the seeds and the fertilizer are separated by partitioning the seeds with a partition plate, the seed and fertilizer conduits 28 for each sowing groove,
28 can be lowered as it is without being crossed. The sprocket 30 mounted on the shaft of the pay-out roll 27 is linked by a chain 33 to a sprocket 32 mounted on the shaft of a drive wheel 31 with a protrusion that is pivotally supported on the outer rear side of the cover 15.

Next, the operation will be described. In a no-till field, each set of hoppers 26, 26 is divided into a seed seed that has been soaked and coated with an oxygen generator (calper), and a granular fertilizer that is coated with a refractory solvent to have a delayed effect. , The height of the rotary tiller 3 is adjusted by the lift arm 4a so that the rotary harrow 5 scrapes the uncultivated rice field surface by about 1 to 2 cm, and the grooving shaft 9 is rotated upward by the grooving claw 14 at the front portion. When the tractor 1 is moved forward while being reversely driven as described above, the rotary harrow 5 stirs old rice stocks and weeds while scraping with the topsoil in the process of shallow plowing at the above plowing depth, and the stable sled 17 is flattened by shallow plowing. Sliding on the field, the claws 14 of each set were scraped at the front while excavating a seeding groove with a narrow width (for example, 3 to 5 cm) to a stable depth of 3 cm or more, and sowing multiple rows. Soil that has been ditched and scraped up While being guided by the cover 15, it is thrown backward through the upper part, and the scraper 24 enters the seeding groove A by advancing in a state of entering the groove at a position 1 to 2 cm away from the rotation trajectory of the grooving claw 14. Scoop out the cultivated soil to be accumulated and form the bottom surface into an inverted V shape.

Since the drive wheel 31 rotates while contacting with the ground, the feeding roll 27 interlocking with the driving wheel 31 sequentially feeds the seed paddy and fertilizer stored in the hoppers 26, ... The cultivated soil, which has been separately thrown into the right and left depressions on the bottom of the sowing groove, is collided with the rake 18 and further crushed and sieved, and the fine cultivated soil leaks and the seed paddy and granular Covered with fertilizer, large-diameter arable soil, straw, weeds, etc. slide down on the rake 18 and flow down diagonally rearward along the sieve rod 20 ... toward the rice field on the side of the groove. At that time, since the sieve rods 20 are inclined rearward, the cultivated soil in which large-sized soil blocks, weeds, and the like to be accumulated on the rake 18 are thrown away. Also, the cover soil has a particle size of 1 cm or less and contains 80% or more, and the thickness is 0.5 c.
If m is 2 m, drying damage occurs, and if it is 2 cm or more, deficiency of oxygen results in poor germination. In this way, it is possible to carry out sowing of multiple rows at the same time.

By partitioning the partition plate 24a on the rear surface of the scraper 24 and arranging the lower portions of the conduits 28, 28 to the left and right of the partition plate 24a, the seed paddy and the granular fertilizer can be more clearly separated and charged. In addition, even if the lower ends of the conduit 28 for fertilizer and the conduit 28 for seed paddle are shifted from each other, the granular fertilizer and the seed paddy can be well separated to the left and right, and in any case Is 2 to 3 cm.
Then, the growth is improved by supplying water to the field at a time when germination occurs 7 to 10 days after sowing. Also,
It is possible to suppress the growth of existing weeds and the germination and growth of seeds of the existing weeds until the water is supplied by the above-mentioned shallow tillage and during the subsequent waterlogging management.

[0015]

EFFECTS OF THE INVENTION The present invention forms the seeding groove A by reverse tillage after shallowly plowing the no-till surface, and sows the seeding groove A to cover the soil. It is possible to remarkably reduce the unevenness in the field scene, weeds, old plants, etc. are removed by the flat tilling, and the weeds are prevented from growing on the substantially no-till surface during the sowing. It can be effectively suppressed, and furthermore, the depth of the seeding groove can be made substantially constant, and the occurrence of poor germination and growth failure can be reliably prevented.

[Brief description of drawings]

FIG. 1 is a side view in which a part of a seeding fertilizer applicator attached to a rear portion of a tractor is cut away.

FIG. 2 is a cross-sectional view of a groove forming portion.

FIG. 3 is a cross-sectional view showing a groove-making state.

FIG. 4 is a transverse cross-sectional view showing a seeded and fertilized state.

FIG. 5 is a perspective view of a rake.

[Explanation of symbols]

 5 Rotary Halo 7 Grooving device 8 Chain case 14 Grooving claw 17 Stabilizing sled 18 Rake 20 Screening rod 24 Scraper 25 Seeding and fertilizing device 28 Conduit

Claims (1)

[Claims] 1. A no-till sowing method comprising shallowly plowing a no-till paddy surface, forming a seed groove A by reverse tillage, and sowing the seed groove A to cover the soil.