JP2001269052A - Method for producing plant-growing base material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a plant-growing base material with a high pelletizing rate regarding soil grain. SOLUTION: A plant-growing basement material is produced by agitating soil and water, or soil with a high water content, and a pelletizing agent in a liquid state by means of an agitator with a rotatable agitating blade. In addition, agitation may be performed under a condition that the above mixture comprises plant spalls, too.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for producing a plant growth base material, which is a soil of a plant formed on a slope or flat ground for the purpose of greening.

[0002]

2. Description of the Related Art Heretofore, a plant growth base material has been manufactured by pumping a slurry containing soil and a powdery aggregating agent into a nozzle device using hoses of different systems.

[0003] According to this, the slurry and the aggregating agent that have been pressure-fed into the nozzle device are fixedly agitated and provided in the nozzle device until they reach the ejection port in the nozzle device. It collides with the wing and is agitated. By the stirring, the fine soil particles in the slurry are aggregated (agglomerated) by the action of the above-mentioned aggregating agent which comes into contact with them, and are formed into granules. As a result, a plant growth base material containing the particulate matter is produced.

[0004] The plant growth base material is then ejected from the nozzle device. The plant growth base is formed by the plant growth base material that is erupted, falls on the ground surface, and deposits. The plant growth base containing the granular material is excellent in water retention and fertilization, and provides a space suitable for elongation of a plant root.

[0005] Incidentally, the stirring action performed for the agglomeration of the soil particles also causes the agglomeration structure of the granular material to be destroyed.

[0006] Therefore, in the conventional method, the pressurized slurry and the aggregating agent are fed into the nozzle device, passed through the nozzle device in a short time, and
Stir between passes within a short time. This avoids destruction of the agglomerated structure of the granules, but on the other hand, lacks agitation to the slurry and the aggregating agent, thereby leaving a large amount of unagglomerated soil particles, that is, There is a problem that the aggregation rate is low. Further, even in this short time, the granular material collides with the fixed stirring blade at a high speed, so that there is a problem that the aggregated structure is destroyed.

Further, in the above-mentioned conventional method, the aggregating agent of the powder does not sufficiently dissolve in the water in the slurry during stirring within a short period of time, so that the coagulation effect exerted on the soil particles is reduced. However, this was not sufficient, and this also caused a low agglomeration rate.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for producing a plant growth base material having a high agglomeration rate of soil particles.

[0009]

According to the present invention, at least soil and water, or soil having a high water content, and a liquid aggregating agent are stirred using a stirring device having rotatable stirring blades. Thus, a plant growth base material is produced. The slurry may include debris of a plant. For the stirring order, after stirring the soil and water, or the soil having a high water content, and the crushed pieces of the plant, stir these and the liquid aggregating agent, or stir the soil and water. After that, these and the crushed pieces of the plant can be stirred, and thereafter, these and the liquid aggregate can be stirred.

[0010]

According to the present invention, soil particles and water are stirred by a stirring device having rotatable stirring blades with the soil and water or the soil liquid aggregating agent having a high water content. And the opportunity for contact with the aggregating agent can be efficiently provided. In addition, since the aggregating agent is in a liquid state, it is easily mixed with the soil, and thus easily contacts the soil particles. As a result, most of the soil particles are subjected to the aggregating action of the aggregating agent during agitation, resulting in a large number of particles. Furthermore, in the stirring device, the stirring blades can be maintained at a low rotation speed, so that the impact of the stirring blades on the granular material is small, and therefore, the destruction of the aggregated structure of the granular material is prevented. Can be avoided. As a result, a plant growth base material having a high aggregation rate can be obtained.

When crushed plant pieces are mixed into the slurry, the crushed pieces are entangled with the particulate matter, which serves to reinforce the plant growth base. For the stirring order, after stirring the soil and water, or the soil having a high water content, and the crushed pieces of the plant, stir these and the liquid aggregating agent, or stir the soil and water. After that, it is preferable to stir these and the crushed pieces of the plant, and then stir these and the liquid aggregate.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The material of a growth base for plants to be planted on the ground surface consisting of slopes and flat surfaces for greening is as follows:
It is manufactured as follows.

That is, a stirrer having rotatable stirring blades is used to convert at least soil and water or soil having a high water content (soil containing a large amount of water) and a liquid aggregating agent (polymer flocculant). And agitate to produce the plant growth base material. The stirring is desirably performed at a rotation speed of 1.4 to 2.0 m / s for about 1 to 2 minutes.

By agitating the soil and water or soil having a high water content (hereinafter simply referred to as “soil or the like”) and the aggregating agent, a large number of soil particles as components of the soil are formed. It comes into contact with the agglomerated agent and is granulated by the aggregating action of the agglomerated agent. That is, it is made into a large number of granules having an aggregated structure.

[0015] The stirring device efficiently stirs the soil and the like and the aggregating agent, and gives them a lot of contact opportunities.

Further, in the stirring device, the rotation speed of the stirring blade can be set to a relatively low speed. Under the low rotation speed of the stirring blade, the agglomerated The impact that the granular material receives on the stirring blade is small, and the destruction of the aggregated structure due to the impact is minimized.

As the stirring device, for example, a biaxial pug mill can be used.

The liquid aggregating agent is more easily mixed with the soil and the like than the powdered one. Therefore, the chance of contact of the aggregating agent with soil particles in the soil or the like is large, and more soil particles are aggregated.

As the soil, in addition to guest soil, for example, locally generated soil collected at a place where the plant growth base is formed can be used. In particular, topsoil containing about 15% or more of the above-mentioned soil particles, which are fine particles made of silt or clay, and containing about 40% or less of gravel is suitable.

Further, as the aggregating agent, the molecular weight is 100.
A polymer flocculant comprising an acrylic polymer having a degree of ionization of 0 to 100 mol%,
A polymer flocculant in the form of a water-in-oil emulsion or a dispersion in an aqueous salt solution having a dispersed particle size of not more than μm can be used. More preferably, it is a polymer coagulant comprising a nonionic, anionic or cationic water-soluble polymer having an ionicity of 0 to 50 mol%, more preferably 0 to 30 mol%.

Examples of the nonionic polymer flocculant include polyacrylamide.

Examples of the anionic polymer coagulant include homopolymers such as acrylic acid, methacrylic acid, itaconic acid, maleic acid, acrylamide 2-methylpropanesulfonic acid, vinylsulfonic acid and styrenesulfonic acid, and acrylamide. And a copolymer of

Further, as the cationic polymer flocculant,
Dimethylaminoethyl acrylate, dimethylaminoethyl methacrylate, dimethylaminopropylacrylamide, dimethylaminopropyl methacrylamide, acryloyloxyethyltrimethylammonium chloride, methacryloyloxyethyltrimethylammonium chloride, acryloylaminopropyltrimethylammonium chloride, methacryloylaminopropyl Trimethylammonium chloride, acryloyl 2-
There are homopolymers such as hydroxypropyllide and methacryloyl 2-hydroxypropyllide and copolymers with acrylamide.

In addition to the above-mentioned soil and the like, it may contain crushed pieces of plants. As the crushed pieces of the plant, crushed pieces of tree trunks, branches and leaves, or roots, or crushed pieces of grass, particularly, crushed pieces of trees cut off at the plantation ground of the plant growth base can be used. The crushed pieces are preferably
It has a length of 20 cm or less and a width of 3 cm or less.

The crushed pieces of the plant are mixed with a large number of agglomerated granules and entangled with these, so that a plant growth base was formed on the ground surface with the plant growth base material containing the crushed pieces. At this time, the crushed pieces of the plant form a reinforcing effect on the plant growth base, and contribute to the improvement of erosion resistance and stability of the base.

The plant growth base material may include a fertilizer (curing material), and may further include a binder and a seed.

For this purpose, at the time of stirring, the fertilizer, the binder and the seeds are added to the stirring device as required.

As the above-mentioned fertilizer, ordinary chemical fertilizers, advanced chemical fertilizers, slow-acting fertilizers, slow-acting fertilizers, soil improving materials (for example, perlite and bark compost) can be used. Addition of a fertilizer prepares the fertilizer component of the plant growth base, and is useful for promoting plant growth and improving soil.

The bonding agent serves for the mutual bonding of the granules and the crushed pieces. By bonding the granular material and the crushed pieces, the erosion resistance and stability of the plant growth base can be further improved.

The erosion resistance can be maintained by entanglement between the granular material and the crushed pieces, as in the case where the slope of the slope on which the plant growth base is formed is relatively gentle. If the plant growth base can be prevented from sliding down on the slope, the addition or mixing of the bonding agent can be made unnecessary.

When the mixing of water is inappropriate, its addition can be omitted.

The stirring by the stirring device is performed first on the soil and the crushed pieces of the plant. Next, water is added and stirred. After stirring the soil and the water, crushed pieces of the plant may be added and stirring may be continued. In the case of the soil having a high water content, since the soil itself contains a large amount of water, the addition of the water can be omitted. Thereafter, the fertilizer (curing material), the seed, the aggregating agent, and the bonding agent are added in this order, followed by stirring.

When the soil is stirred with the water or when the soil having a high water content is stirred,
It becomes a slurry with fluidity.

The plant growth base material obtained as a result of the stirring is removed from the stirring device, and the belt conveyor is operated by using, for example, a belt conveyor, that is, placing the plant growth base material on the belt conveyor. Then, by discharging the plant growth base material into the air from the end of the belt conveyor, the plant growth base material can be dropped on the ground surface to form a plant growth base.

Alternatively, the plant growth base material is put into a bucket of a construction work machine such as a backhoe,
Thereafter, the bucket is actuated and the plant growth base material is shaken off onto the ground surface, whereby the plant growth base can be created.

The use of the agitator enables the production and supply of the plant growth base material in a large amount in a short time, and the utilization of the belt conveyor, backhoe, etc.
Spreading of a large amount of plant growth base material in a short time and creation of a thick layer of plant growth base by this can be enabled.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Mami Ishiguchi 2-1 Tsukudo-cho, Shinjuku-ku, Tokyo Kumagaya Gumi Tokyo head office F-term (reference) 2B022 AB02 BA01 BA02 BA04 BA14 BA21 BB10 DA19 2D044 DA33

Claims (4)

[Claims] 1. A stirrer having at least soil and water, or a soil having a high water content, and a liquid aggregating agent with a rotatable stirring blade, thereby producing a plant growth base material. A method for producing a plant growth base material. 2. The production method according to claim 1, further comprising agitation including crushed plant fragments. 3. The method according to claim 2, wherein the soil and water, or the soil having a high water content, and the crushed pieces of the plant are stirred, and then these are stirred with the liquid aggregate. 4. The method according to claim 2, wherein, after stirring the soil and water, these are stirred with the debris of the plant, and thereafter, these and the liquid aggregate are stirred.