JPH04148604A - Method and device for watering and directly sowing paddy rice - Google Patents

Abstract

PURPOSE:To surely bury seeds in a stable depth to efficiently perform a sowing work giving a stable germination degree, an excellent vertical planting degree and an improved lodging resistance by carrying the seeds together with a high speed air flow and penetration-burying the seeds in puddled soil. CONSTITUTION:Air is fed from an air blower into an accumulator 1 through a hose 3, and seeds 9 are sucked from a hopper into a sowing pipe 5 through a chute 7 and a suction opening 8 connected to the sowing pipe 5. The seeds 9 are accelerated with the air 10 and jetted on the surface 11 of a paddy field, whereby the water 12 on the surface of the field is removed and the seeds are penetrated and buried in the soil.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for directly sowing rice in water and a direct sowing device in hot water.

(Conventional technology) Methods for direct sowing by flooding include the row sowing method, in which a furrow is made in the rice field, the seeds are dropped to the bottom of the furrow, and the soil on the sides of the furrow is returned to cover the soil, and the other is the row sowing method, in which the seeds are dropped to the bottom of the furrow and then covered with soil. There is a scattering method in which seeds are released into the sky and then dropped.

The most important thing in hot water direct sowing cultivation of paddy rice is to bury the seeds reliably and uniformly at an appropriate depth in the soil.

That is, if the seeds are buried too deeply, seed germination will be suppressed and the yield will be reduced, and if the seeds are buried too shallowly, the rice will lodge in the late stages of growth, resulting in deterioration of the quality of the rice.

The row sowing method, in which seeds are sown while trenching, has the disadvantage that the depth of the trench and the thickness of the soil cover vary due to the hardness and softness of the soil and the agitation of soil and water caused by the running of the working machine, resulting in uneven seed burial depth. there were. In addition, since the seeds are coated in semi-linear soil, the airtight condition results in a lack of oxygen, which is necessary for seed germination.
The drawback was that the seedling establishment rate was low.

On the other hand, in the case of seeding methods that use power spreaders or aircraft, the burial depth is not uniform, and even if a small amount of water remains on the rice field, the seeds are not buried in the soil. There were disadvantages such as floating movement due to wind and waves, resulting in uneven seedling establishment, and lodging during harvest time.

(Problem H to be solved by the invention) The present invention solves the drawbacks of the conventional direct sowing method by burying the seeds at a uniform depth in the soil using a simple method to prevent seedlings from sprouting. The purpose is to improve the lodging resistance and improve the lodging resistance.

Furthermore, it aims to improve the efficiency of agricultural work.

(Means for Solving the Problems) The first invention is characterized in that the seeds are accelerated to a constant speed by a high-speed air flow, and the seeds are penetrated and buried in the soil in a plowed and leveled field, In the second invention, the blower and the accumulator are connected via a hose, and a seeding vibrator provided with an inlet is installed at the bottom of the accumulator, and the inlet and the seed squeezing device are connected to a chute. It is characterized by being connected via.

(Function) In the seeding method of the present invention, the seeds that are fed out from the feeding device and fall in the chute are sucked into the seeding pipe by pressure changes in the air flow discharged from the blower, and are accelerated to a constant speed in the seeding vibrator. It penetrates into the soil and buries it.

(Example) Embodiments of the invention are illustrated in the drawings.

FIG. 1 is a perspective view of an embodiment of an apparatus for carrying out the method of the present invention.

A blower 2 is connected to the accumulator 1 via a bow 3 at an appropriate position. This accumulator]
At the bottom, seeding vibrators 5 are installed in horizontal rows at a predetermined interval 4, and the air flow rate in each seeding pipe 5 is made equal by passing an accumulator 1 in the air flow path. .

The feeding device 6b at the bottom of the seed hopper 6a has a chute 7.
A suction port 8 installed at the top of the seeding vibrator 5 through the
are branched and connected.

When the blower 2 and the feeding device 6b are driven in this way, the seeds 9 which have received negative pressure at the suction port 8 are each P! as shown in FIG. It is sucked into the seed vibrator 5, accelerated to a constant speed by the air 10 passing through the seeding pipe δ at high speed, and is injected toward the field surface 11, penetrating into the soil and being buried. At this time, the air 10 discharged from the tip of the sowing vibrator 5 together with the seeds 9 also removes the surface water 12 remaining on the rice field in the m field.

FIG. 3 shows the sowing device constructed in this manner on the traveling vehicle body 13.
This example shows an example in which the device is installed at the rear of the farm and work is carried out in the field.

The blower 2 is mounted on a traveling vehicle body 13 and is driven by an integrated dedicated engine 14. Further, the seed supply units 6 and 7 and the cumulator 1 are fixed on a frame 16 held by a three-point hitch 15 installed at the rear of the vehicle body 13. Unleash Ml! i6b is driven by power taken out from the drive shaft 17 of the traveling vehicle body 13 via a cable 18.

The injection speed of the seeds 9 is adjusted according to the hardness and softness of the soil by adjusting the air volume by the rotation speed of the engine 14 of the blower 2.

The height of the tip of the sowing vibrator 5 from the field surface 11 is adjusted as appropriate by moving the three-point hitch 15 up and down depending on the amount of surface water.

The results of the above example are compared with the conventional example and are shown in the table below.
In addition, the depth at which the seeds sown according to the embodiments penetrate into the soil varies depending on the size and weight of the seeds, the hardness of the soil, etc., but based on the results of the present invention, the maximum If the spraying speed is designed to be 15 m/s, seeds can be penetrated and buried at an appropriate depth in any hardness of paddy fields after normal puddling.

The blower is typically mounted on the vehicle body and driven by an integrated dedicated engine, but it is also possible to use the power of the vehicle body.

(Effects of the invention) According to this method, the seeds reliably penetrate into the soil and are buried at a stable depth, thereby reducing the variation in the burial depth of the seeds compared to the conventional method. The germination is stable and the seedling establishment rate is 20% to 30% higher than that of conventional methods.
% improvement. ■Prevents feeding damage from sparrows and chemical damage from leather removal agents. ■There are no floating seedlings that cannot get their roots down into the soil, and there are no octopus seedlings whose roots stick out above the soil, and there is no uneven seedling establishment caused by seedlings being washed away by wind or waves.

■Initial growth is fast and lodging during the harvesting period can be prevented. There are effects such as

In addition, in conventional direct sowing, seed rice coated with oxygen supplements such as lime peroxide is used, but coated seeds can be used instead of rice seeds because they can provide a good germination environment without having to immerse the seeds in the soil. It is also possible to sow germinated bare paddy. In the experimental results, the amount of seed rice was 3
If the number of seedlings is increased by 0%, the same number of seedlings as in the case of sowing coated seeds can be secured, and there is also the advantage that the cost of coating materials and the labor of coating can be omitted, resulting in a large economic effect.

Furthermore, since there is no need for equipment to cut trenches or cover soil, and the mechanism is simple and lightweight, the efficiency of sowing work can be significantly improved by adding more seeding pipes and widening the working width. In addition, since surface water is removed by discharged air, leveling work, which was important in field preparation work for direct seeding with hot water, is simplified, resulting in significant labor savings.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the till device, FIG. 2 is a cross-sectional view showing an embodiment of sowing, and FIG. 3 is a diagram showing an example in which the till device is mounted on a vehicle (rice transplanter or tractor) for operation. 1 is an accumulator, 2 is a feeder, 4 is an interval, 5 is a T1 type pipe, 6a is a seed hopper, 6b is a repeater, 8 is an inlet, 9 is a seed, is a field surface, 2 is a surface water, 3 is a running vehicle body , is the engine, 15 is the three-point hitch, 6 is the frame, 7 is the drive shaft, and 8 is the cable.

Claims (2)

[Claims] (1) Accelerate the seeds to a constant speed by high-speed airflow,
A direct flooding method for rice, which is characterized by penetrating and burying rice in the soil in a plowed and leveled field. (2) The blower and the accumulator are connected via a hose, and a seeding pipe provided with an inlet is installed at the bottom of the accumulator, and this inlet and the seed feeding device are connected via a chute. Characteristic rice flooding direct sowing device.