JPH0826316B2 - Soil conditioner and method for producing the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soil improving material for improving the properties of soil in agricultural land and a method for producing the same.

[0002]

2. Description of the Related Art Charcoal powder produced by steaming timber is known as a soil improving material. Charcoal powder has a large soil improvement effect and is heavily used by many farmers.

[0003]

[Problems to be Solved by the Invention] However, coal powder has a small specific gravity, and when it is sprayed on an agricultural land, it is dissipated by the wind, and because it floats in rainwater and is easily washed away, farmers use it mixed with soil. Therefore, there has been a problem that it requires a lot of labor to use and handle it.

Further, although carbon powder is quite expensive and a relatively small amount can be mixed with soil, it is quite difficult to uniformly mix a small amount of carbon powder over a wide agricultural land. There was a problem.

Shirasu, which is known as volcanic ash soil, has a low specific gravity and a high porosity, and is known to be liable to fluidize when it contains rainwater and to cause natural disasters such as landslides. However, at present, there are not many useful uses of Shirasu, and there is a demand for exploration of its application. By the way, although the particle shape of general sand or soil is close to a spherical shape, the shape of shirasu is a polyhedron with many angular irregularities, and therefore has a larger porosity and a larger surface area than general sand or soil.

[0006] Conventionally, charcoal powder, which is a soil improving material, is produced by steaming timber. However, since timber has to be cut down from the mountain and steaming requires a long time, the timber is used as a raw material. The charcoal powder is quite expensive. By the way, Kosotake grows naturally in various mountains, but most of them are left unattended because there is no useful usage. However, since Kosotake is much easier to cut from the mountain than timber, grows very quickly, and is easy to steam, it is possible to produce charcoal powder at a much lower cost than timber. Is.

Therefore, in view of the above circumstances, the first object of the present invention is to provide a soil improving material in which charcoal powder can be advantageously used and a method for producing the same. A second object is to provide a soil improving material which can effectively utilize the volcanic ash soil, Shirasu. A third object is to provide a soil improving material that can effectively use soji bamboo as charcoal powder.

[0008]

To this end, the present invention provides a soil conditioner by adhering clay 3 on the surface of soil particles 2 and carbon powder 4 on the surface of clay 3. .
Desirably, the soil particles 2 are made of shirasu soil particles, and the charcoal powder 4 is made of steamed roe bamboo.

[0009]

According to the above construction, the charcoal powder 4 is thinly adhered to the surface of the soil particles 2, and by mixing this with the agricultural land, the soil properties can be improved. Further, since the coal powder 4 is strongly adhered to the surface of the soil particles 2 by the clay 3, it is difficult to dissipate and run off by wind or rainwater, and it is easy to be uniformly sprayed or mixed on the agricultural land, which makes it extremely easy to handle.

[0010]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is an enlarged perspective view of soil particles of a soil improving material manufactured by a manufacturing method described later. Further, FIG. 2 is an enlarged cross-sectional view showing the structure of the surface portion of the soil particles. See also FIG.
In, A'is a partially enlarged view of the A portion. In this soil particle 1, clay 3 is thinly attached to the surface of shirasu particle 2,
Further, carbon powder 4 is attached thinly in spots on the surface of the clay 3. The clay 3 serves as a binder for adhering the carbon powder 4 to the surface of the shirasu particles 2.

The specific gravity of the shirasu particles 2 is slightly larger than 1. Further, the shape of the shirasu particle 2 is a polyhedron with angular irregularities as shown in FIG. 1, and its surface area is large. This aggregate of soil particles 1 is mixed with the agricultural land as a soil improving material. In this case, since the specific gravity of the shirasu particles 2 is larger than 1, it is difficult for the shirasu particles 2 to dissipate and run off by wind or rainwater. In addition, since it has a square shape with many irregularities, it has a large porosity, so if it is mixed with agricultural land, high air permeability and water retention can be secured, and since the surface area is large, a large amount of carbon powder 4 is attached. Therefore, it is an excellent soil improving material in combination with the soil improving action of the carbon powder 4.

Next, a method for manufacturing the soil conditioner will be described. The materials for the soil conditioner are (a) Shirasu, (b) clay, (c) carbon powder, and (d) solution. Prior to the production of the soil conditioner, the material is first purified. Shirasu particles 2 are purified as follows. That is, the shirasu particles 2 are obtained by drying the shirasu collected in a mountain or the like, and then subjecting the shirasu to a particle size of about 1 mm to prepare the particles, and then completely drying the shirasu particles 2. The drying method may be natural drying by the sun or forced drying by heat.

Next, a method for producing clay will be described with reference to FIGS. 3 and 4. As shown in FIG.
Put the clay 3 collected in a mountain or the like on the sieve 13 and immerse it in water to dissolve the clay 3. It is desirable that this sieve 13 be about 0.5 mm or less. Then, the clay 3 having a particle size of about 0.5 mm or less sinks to the bottom of the container 11 and accumulates on the bottom.

Next, the clay 3 having a uniform particle size accumulated on the bottom is taken out from the container 11 and completely dried by natural drying or forced drying. Next, as shown in FIG. 4, the dried clay 3 is put into a mortar 14 and crushed by a pestle 15 to obtain powder. The clay 3 is purified as described above.

Next, a method of refining the carbon powder 4 will be described.
The branches of the bamboo shoots that have been cut down from the mountains are dropped and carbonized by steaming in a furnace. Then, the carbonized material is crushed into powder by a method similar to the method shown in FIG.
Generate Also, a solution can be obtained by collecting and liquefying the smoke produced when steaming roe bamboo. This solution contains the nutrients of the bamboo shoot, and in the present invention, this solution is referred to as "bamboo vinegar solution". Thus, the purification of all materials is completed.

Next, a method for producing a soil conditioner using the material purified as described above will be explained. That is, the required amount of shirasu particles 2 and clay 3 are put in a mixing container at a constant ratio and mixed well. Then add the bamboo vinegar by spraying, mix them further, and continue until the bamboo vinegar reaches a certain ratio. A lump of 2 mm or more is generated in the middle of the process, so crush it and continue mixing.

Next, sprinkle with the charcoal powder 4 and mix,
Add the required amount of charcoal powder 4. In this case as well, lumps are formed, so mix them while crushing them. When the mixing is completed, remove from the mixing container, put it in a closed container, and leave it overnight to let it acclimatize and firmly adhere clay 3 and carbon powder 4 to shirasu particles 2 and then close the container. Soil conditioner is completed if it is taken out from the plant and completely dried. Table 1 shows the mixing ratio. The mixing ratios shown in Table 1 are examples, and the mixing ratios may be arbitrarily changed according to the variety of the agricultural products, the properties of the soil of the agricultural land, and the like.

[Table 1]

The present invention is not limited to the above embodiments, and does not prohibit the use of other soil particles in place of, for example, shirasu particles. Also, charcoal powder may be produced by using lumber instead of the bamboo shoots. As the solution, water or a diluted solution of bamboo vinegar may be used instead of bamboo vinegar. Further, in addition to the carbon powder 4, other soil improving components may be added and mixed. As described above, the soil improving material of the present invention can be modified in various ways,
The above embodiment is very excellent.

[0019]

As described above, the soil improving material of the present invention is easy to use by mixing and sprinkling it on the agricultural land, and since the carbon powder is strongly adhered to the soil particles by the clay as the binder, It does not easily dissipate and run off due to rainwater, and in combination with the soil improving action of carbon powder, an excellent soil improving effect can be obtained. If shirasu particles are used as soil particles, shirasu particles have a large surface area with irregularities,
Sufficient carbon powder can be attached, and since the porosity is large, sufficient air permeability and water retention can be secured. Moreover, the cost can be significantly reduced by using the soybean bamboo as the material for the charcoal powder, and by using the bamboo vinegar as the solution, an excellent soil conditioner having a high nutritional value can be obtained.

[Brief description of drawings]

FIG. 1 is an enlarged perspective view of soil particles of a soil improving material according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of soil particles of a soil conditioner according to an embodiment of the present invention.

FIG. 3 is an explanatory view of a method for producing a soil conditioner according to an embodiment of the present invention.

FIG. 4 is an explanatory diagram of a method for producing a soil conditioner according to an embodiment of the present invention.

[Explanation of symbols]

 1 Soil particles 2 Shirasu soil particles 3 Clay 4 Charcoal powder

Claims (7)

[Claims] 1. A soil improving material, characterized in that clay is adhered to the surface of soil particles and carbon powder is adhered to the surface of the clay. 2. The soil improving material according to claim 1, wherein the soil particles are shirasu particles. 3. The soil improvement material according to claim 1, wherein the charcoal powder is produced by steaming roe bamboo. 4. A clay and a solution are added to and mixed with soil particles of which the particle sizes are made uniform by a sieve to adhere the clay to the surface of the soil particles, and then charcoal powder is added and mixed. Thus, a method for producing a soil improving material, characterized in that the charcoal powder is adhered to the surface of the clay. 5. The method for producing a soil improving material according to claim 4, wherein the soil particles are shirasu particles. 6. The method for producing a soil conditioner according to claim 4, wherein the charcoal powder is produced by steaming roasted bamboo shoots. 7. The method for producing a soil conditioner according to claim 4, wherein the solution is a bamboo vinegar obtained when steaming roe bamboo to produce charcoal powder.