JP2000139322A - Scattering of dust-granule and dust-granule scattered thereby - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a process for the scattering of dust-granule enabling efficient scattering of the granule reducing the load on the worker and provide dust-granule to be used in the above scattering process. SOLUTION: A number of granules 2 floating on the water surface over a prescribed period and sinking in water by the impregnation of water into the granule are floated on water and diffused and moved with wind blow. The granule 2 has a main component part having high hydrophilicity at the core and a coating layer coating the core part and having hydrophilicity smaller than that of the core part. The coating layer has one or more channels penetrating the layer from its surface to the core part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a herbicide for paddy fields,
The present invention relates to a powder and granule spraying method suitable for spraying a powder and granule such as an insecticide, a bactericide or a fertilizer, and a powder and granule used in the powder and granule spraying method.

[0002]

2. Description of the Related Art In general, herbicides, insecticides, bactericides, fertilizers, and other powdery granules for paddy fields are stored in a chemical tank in a power sprayer, and are ejected from a spout connected to a jet tube of the power sprayer. Discharge is sprayed. In practice, the powder and granules are evenly sprayed on the paddy field when the worker moves in the paddy field while carrying the power spreader.

[0003] By the way, among the powdered granules 2 to be sprayed, one called a coating agent is, as shown in FIG.
In the center, a main component portion 20 which is a medicinal ingredient as a herbicide, an insecticide, a bactericide, and a fertilizer is disposed, and a coating layer 25 is disposed around the main component. The coating layer 25 includes the main component 2
It is composed of a component having a small hydrophilic property, which elutes at a rate slightly lower than 0. As a result, when the powder or granule 2 is sprayed on the paddy field, the coating layer 25 is gradually eluted due to the presence of the surrounding water, and the main component portion 20 is eluted from the portion where the coating layer 25 is eluted, thereby exhibiting a medicinal effect. .

[0004]

In the conventional method for dispersing powder and granules, since the powder and granules stored in the medicine tank of the power disperser are dispensed from the spout, heavy powder and granules are worked together with the power disperser. It is necessary for the worker to carry the water evenly on the paddy field, which places a heavy burden on the workers and makes it difficult to spray for a long time.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a method of spraying a powder and a granule for reducing the burden on an operator and spraying the powder and a granule efficiently, and a powder used in the method. It is intended to provide granules.

[0006]

According to a first aspect of the present invention, there is provided a method for dispersing a powder or granule, wherein the powder or the granule is suspended on a water surface for a predetermined time and settles due to penetration of water into the inside. 2) is characterized in that a large number of them are floated on the water surface and then diffused and moved by blowing air.

[0007] In such a configuration, the powder and granules (2), which are previously suspended in large numbers on the water surface, are diffused and moved by blowing air, so that the powder and granules (2) are evenly distributed on the water surface. After a predetermined period of time, the substance precipitates in water and exhibits a medicinal effect. Thus, it is not necessary to carry the power spraying machine on the paddy and spray the granular material (2) as in the related art.

According to a second aspect of the present invention, in the method for dispersing a powder or granule, the powder or granule (2) comprises a main component (2) having a large hydrophilic property at a central portion.
0) and a coating layer (21) that covers the main component (20) and is less hydrophilic than the main component (20), and the main component (20) extends from the surface of the coating layer (21). At least one passage (22) communicating with the coating layer (2).
1) is formed.

In such a configuration, since the coating layer (21) having a small hydrophilic property covers the main component (20),
Since the powder (2) can be suspended on the water surface,
The air can be moved and diffused by blowing air to be evenly distributed on the water surface. Furthermore, from the contact part with the water surface,
Reaches the main component (20) via the passage (22), and the main component (20) contains water and has a specific gravity of more than 1, so that it sediments and exhibits a medicinal effect.

According to a third aspect of the present invention, in the method for dispersing a powder or granule, the powder or granule comprises a main component having a large central hydrophilicity (20).
And the main component part (20), and the main component part (2
A coating layer (21) having a lower hydrophilicity than that of the coating layer (0) is provided, and a large number of hydrophilic coats (23) protruding from the coating layer (21) are provided on the main component (20).

In such a configuration, since the coating layer (21) having a small hydrophilic property covers the main component (20),
Since the powder (2) can be suspended on the water surface,
The air can be moved and diffused by blowing air to be evenly distributed on the water surface. Further, from the portion in contact with the water surface, moisture penetrates from the hydrophilic coat (23) and reaches the main component (20), and the main component (20) contains water and the specific gravity becomes greater than 1. Due to sedimentation, it shows medicinal properties.

According to a fourth aspect of the present invention, in the method for spraying a powder or granule, the powder or granule (2) comprises a main component (20) having a large hydrophilic property,
A large number of water-repellent coats (24) are densely provided around the entire periphery of the main component (20).

In such a configuration, the main component (20)
A large number of water-repellent furs (24) are densely provided around the entire area, so that the granule (2) floats on the water surface due to the hydrophobic action of the numerous water-repellent furs (24). Therefore, the air can be moved and diffused by blowing air to be evenly distributed on the water surface. Further, moisture penetrates from the gap between the water-repellent coats (24) by capillary action and reaches the main component (20), and the main component (20) contains water and the specific gravity becomes greater than 1. Due to sedimentation, it shows medicinal properties.

According to a fifth aspect of the present invention, the powdery granule (2), which floats on the water surface for a predetermined time and settles due to penetration of water into the interior, is floated on the water surface and then blown. A powder or granule (2) used in a method of spraying and dispersing a powder or granule, wherein the powder or granule has a specific gravity of less than 1;
Due to contact with the water surface, the specific gravity becomes 1 or more, and it sediments to show medicinal effects.

[0015] In such a configuration, since the specific gravity of the granular material (2) is less than 1, it can be floated on the water surface, so that it can be diffused and moved by blowing air to be evenly distributed on the water surface. it can. Furthermore, since the specific gravity becomes 1 or more due to the contact with the water surface after the diffusion movement, the particles settle down in the water surface and exhibit a medicinal effect, so that the same effect as that sprayed by the power sprayer is produced.

[0016] The powder or granule (2) according to claim 6 is characterized in that the main part (20) having a large hydrophilic property at the center and the main part (2).
0), and a coating layer (21) having a hydrophilic property smaller than that of the main component (20), wherein the main component (20) extends from the surface of the coating layer (21). ), At least one passage (22) communicating with the coating layer (2).
1) is formed.

The powder and granule (2) according to claim 7 is characterized in that the main part (20) and the main part (2) having a large hydrophilic property at the center are provided.
0) and a coating layer (21) having a coating layer (21) having a lower hydrophilicity than the main component (20), wherein the coating layer (21) is provided on the main component (20). A large number of hydrophilic coats (23) protruding from are provided.

The powdery granule (2) according to the eighth aspect is characterized in that the main part (20) having high hydrophilicity and a large number of water-repellent coats densely provided around the main part (20). (24).

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention, and FIG. 2 is a schematic configuration diagram showing a procedure of a spraying method according to an embodiment of the present invention. The figure which shows the state which floated on the water surface of (a), the figure which shows the state by which the granular material on the water surface was made to move and diffuse by the blowing of the blower, and the state which the granular material settled in water (c). FIG.

In the method for dispersing a powder or granule according to the present embodiment,
As shown in FIG. 1 and FIG. 2, a large amount of the granular material 2 is floated on the water surface at the edge of the paddy field 1 (FIG. 2A), and the granular material 2 moves on the water surface by blowing air from the blower 3. The particles 2 are dispersed and evenly distributed (FIG. 2 (b)), and after a predetermined time, the granular material 2 sinks in water (FIG. 2 (c)).

The granule 2 has a medicinal effect such as a herbicide, an insecticide, a bactericide or a fertilizer for paddy fields, and is particularly suitable when a large amount of a medicinal ingredient having a low density of medicinal components is sprayed on a paddy field. ing. For example, a paddy field having a size of about 1000 m ² is suitable. Further, the powder / granule agent 2 may be a powder having a small diameter of about 10 μm to a granular having a large diameter of about 1 mm. The blower 3 used for blowing is, for example, a small engine blower.

The granular material 2 is preferably in the form of a granular material having a specific gravity of less than 1 and is easily diffused all over the surface of the water. is there. Since the specific gravity of the granular material 2 is less than 1, it can be floated on the water surface, and can be diffused and moved on the water surface by blowing air. After the diffusion movement, the specific gravity becomes 1 or more due to contact with the water surface, so that the particles settle in the water and exhibit a medicinal effect. Therefore, the same effect as that obtained by spraying with a power sprayer or the like is produced. Preferably, the powder or granule 2 is capable of floating on the water surface for about 20 minutes.

As the powder and granule 2 used in the spraying method of the present embodiment, for example, there are three kinds of embodiments as shown in FIGS.

The first granular material 2 shown in FIG. 3 is composed of a main part 20 having a large hydrophilicity at the center and a coating layer covering the main part 20 and having a lower hydrophilicity than the main part 20. 2
1, and at least one or more passages 22 are formed in the covering layer 21 so as to communicate with the main component portion 20 from the surface thereof. The powder / granule 2 has a small hydrophilic coating layer 21.
Because it covers the main component portion 20, it floats on the water surface, so that it can be moved and diffused by blowing air and evenly distributed on the water surface. Further, water reaches the main component portion 20 from the portion in contact with the water surface via the passage 22 of the granular material 2, and sediments because the main component portion 20 contains water and has a specific gravity greater than 1.

The first granular material 2 comprises a main component 20
Is produced by attaching a porous coating layer 21 to the outside thereof. Many pores of the porous coating layer 21
It becomes 2.

The second granular material 2 shown in FIG. 4 has a main part 20 having a large hydrophilicity at the center and a coating layer covering the main part 20 and having a lower hydrophilicity than the main part 20. 2
1 and a large number of hydrophilic coats 23 projecting from the coating layer 21 are provided on the main component portion 20. In the powder or granule 2, the coating layer 21 having a small hydrophilic property includes the main component portion 20.
, The powder 2 can be floated on the water surface, and can be moved and diffused by blowing air to be evenly distributed on the water surface. Further, moisture penetrates from the hydrophilic coat 23 in a portion that comes into contact with the water surface and reaches the main component portion 20, and the main component portion 20 contains water and has a specific gravity of more than 1, so that the main component portion 20 is settled down and has a medicinal effect. Show.

The second powder 2 has a main component 20
A hydrophilic coat 23 is fixed to the main body portion 20, and a coating layer 21 is further fixed to the main component portion 20, and the outside of the coat layer is removed by vibration, friction, or the like, so that the hydrophilic coat 23 is projected.

The third granular material 2 shown in FIG. 5 includes a main component 20 having a large hydrophilicity and a large number of water-repellent coats 24 densely provided around the entire main component 20. . In the powder and granule 2, the anaerobic coat 2
4 are densely provided, so that a large number of
Due to the hydrophobic action of the powder 4, the granular material 2 can be floated on the water surface, and can be moved and diffused by blowing air to be evenly distributed on the water surface. Further, moisture penetrates from the gaps between the water-repellent coats 24 by capillary action, reaches the main component portion 20, and sediments because the main component portion 20 contains water and has a specific gravity of more than 1 and sediments. Is shown.

The third powdery granule 2 sticks the main component portion 20 to a large number of water-repellent hairs 24, removes the outside of the main component portion 20 by vibration, friction, etc., and projects the water-repellent hair 24. It is manufactured so that

In the present embodiment, when applied to the paddy field 1, it is preferable to use it within one month after rice transplanting. In the present embodiment, the method of spraying on the paddy field 1 has been described. However, the present invention is not limited to this.
It is needless to say that the present invention can be applied in the case of spraying.

[0031]

As described above, in the method for dispersing powder and granules of the present invention and the powder and granules used in the method for dispersing powder and granules, it is not necessary to carry a power disperser as in the prior art.
The burden on the operator can be reduced, and the powder or granule (2) can be efficiently sprayed in a very short time. In particular, claim 2
8. In the method for dispersing a powder or granule described in 8, the powder or granule (2)
Since its specific gravity is less than 1, it can be floated on the water surface, and can be diffused and moved by blowing air to be evenly distributed on the water surface. Further, after the diffusion and transfer, the specific gravity becomes 1 or more due to contact with the water surface, and the substance sediments in water to exhibit a medicinal effect. Therefore, the same effect as that obtained by spraying with a power sprayer or the like is produced. 2) can be sprayed on paddy fields and the like.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram showing a procedure of a spraying method according to an embodiment of the present invention, where (a) shows a state in which a granular material is suspended on the water surface at the edge of a paddy field, and (b) is a diagram showing The figure which shows the state which moved and diffused the granular material on the water surface by the blowing of the blower, (c).
FIG. 4 is a view showing a state in which the granular material has settled in the water surface.

FIG. 3 is a configuration diagram of a first powder and granule used in the powder and granule spraying method of the present embodiment.

FIG. 4 is a configuration diagram of a second granular material used in the method of spraying a granular material according to the present embodiment.

FIG. 5 is a configuration diagram of a third powder / granule used in the powder / granule spraying method of the present embodiment.

FIG. 6 is a configuration diagram of a conventional granule.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Paddy field 2 Granule 3 Blower 20 Main component part 21 Coating layer 22 Passage 23 Hydrophilic coat 24 Hydrophobic coat

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A01M 21/04 A01M 21/04 C

Claims (8)

[Claims] 1. A powder / granule spraying method in which a large number of powder / granules (2) which float on the water surface for a predetermined time and settle by permeation of water into the interior are floated on the water surface and then diffused and moved by blowing air. Method. 2. The powdery granule (2) covers a main part (20) having a large hydrophilicity at a central part, and covers the main part (20), and the main part (20)
A coating layer (21) having a lower hydrophilicity, and at least one or more passages (22) communicating from the surface of the coating layer (21) to the main component (20) are formed in the coating layer (21). The method for spraying a granular material according to claim 1. 3. The granule (2) covers a main part (20) having a large hydrophilic property at a central part, and covers the main part (20), and the main part (20)
2. The coating according to claim 1, further comprising: a coating layer having a smaller hydrophilicity than the coating layer, wherein a plurality of hydrophilic coats protruding from the coating layer are provided on the main component portion. How to spray powder. 4. The granule (2) comprises a main component (20) having a large hydrophilic property and a large number of water-repellent coats (24) densely provided around the entire main component (20). The method according to claim 1, further comprising the steps of: 5. A method for dispersing a powder or granule in which a large number of powder or granules (2) floating on the water surface for a predetermined time and settling by permeation of water into the interior are floated on the water surface and then diffused and moved by blowing air. (2) A powder or granule having a specific gravity of less than 1 and having a specific gravity of 1 or more due to contact with a water surface and sedimenting to exhibit a medicinal effect. 6. The granule (2) covers a main component (20) having a high hydrophilicity at a central portion, and covers the main component (20), and the main component (20).
A powdery or granular material (2) comprising a coating layer (21) having a lower hydrophilicity, wherein at least one or more passages (22) communicating from the surface of the coating layer (21) to the main component (20) are formed. The powder or granule according to claim 5, which is formed on the coating layer (21). 7. The powder or granule (2) covers a main component (20) having a large hydrophilicity at a central portion, and covers the main component (20), and the main component (20).
A powdery granule (2) comprising a coating layer (21) having a smaller hydrophilicity, wherein a number of hydrophilic hairs (23) protruding from the coating layer (21) are provided on the main component (20). The granule according to claim 5, which is provided. 8. The granule (2) comprises a main component (20) having a large hydrophilic property and a large number of water-repellent coats (24) densely provided around the entire main component (20). The granule according to claim 5, comprising: