JPH0638723B2 - Soil for growing plants - Google Patents

Description

TECHNICAL FIELD The present invention relates to a soil for growing plants, and more particularly to improvement of a soil for growing plants containing rockwool granular cotton and peat moss as main components.

[Prior Art] Conventionally, as artificial soil for growing plants, a soil made by mixing rock wool granular cotton and peat moss as a main component has been proposed and put into practical use.

The mixed soil described above effectively utilizes the high porosity of rock wool and has a good water retention property, so that the frequency of irrigation work can be reduced, so that significant labor saving is possible, and at the same time, it is highly breathable. Since the rock wool, which occupies the main part, is sterile, there are few harmful bacteria as a whole, and p
H has been continuously adjusted to be suitable for plant growth, its properties are close to those of natural soil, and it is a natural soil for seed beds, greenhouses, planters, pots, etc. without requiring any complicated equipment. Can be used like soil. Since the apparent specific gravity is about 1/3 of that of natural soil, operations such as soil transportation, raising, mixing fertilizer, and moving seedlings can be easily performed.

[Problems to be Solved by the Invention] As described above, the mixed soil consisting of rock wool granular cotton and peat moss has many excellent features, but has a problem of water retention. That is, although the mixed soil has a sufficient water retention capacity, it tends to become over-humidified.

In order to suppress the above-mentioned over-humidity, a means for adjusting the water retention by mixing cotton with water-repellent rock wool granules and hydrophilic granules is applied, but it is still possible to prevent over-humidity. It is difficult to control to.

Further, the mixed soil consisting of rock wool granular cotton and peat moss has a drawback that water absorption is poor after drying once (mainly due to the property of peat moss).

[Object of the Invention] The present invention is useful in a soil containing a mixture of rock wool granular cotton and peat moss as main components, which can solve the drawbacks such as the tendency of over-humidity and deterioration of water absorption after drying all at once. It was made to provide a soil for growing plants.

[Means for Solving the Problems] In order to achieve the above object, the present invention mainly comprises 20 to 60% by volume of rock wool granular cotton and 20 to 70% by volume of peat moss, and further includes granular pumice and / or granular vermiculite. 10 to 40% by volume is blended, and the rock wool granular cotton is a hydrophilic fine-grain cotton subjected to an interface treatment, or a hydrophilic fine-grain cotton subjected to the interface treatment and a fine-grain cotton having water repellency, Alternatively, it is made of hydrophilic fine-grain cotton, and the fine-grain cotton is 50-100 in the range of 2.38-4.75 mm in the sieve of the shaking and sieving machine of JIS Z8801.
%, 75 mm or more of the remaining part is 50 to 0%,
Fine cotton is 50-100 in the range of 0.5-2.38 mm in the sieve of JIS Z8801 shaking sieving machine.
%, And the remaining portion of 2.38 mm or more is 50 to 0%.

Further, the gist of the present invention is that a pH adjusting agent is mixed in the plant cultivation medium in an amount of 0.05 to 0.2% by volume.

[Operation] In the soil for growing plants, which has the above composition, the amount of water retention in the soil is adjusted by the mixture of granular pumice and / or granular vermiculite and the composition of rock wool granular cotton. The decrease in water absorption after once dried is also improved.

Furthermore, by mixing the pH adjusting agent, it becomes possible to adjust the soil to a pH value that is optimal for plant growth.

[Example] Rockwool granular cotton, which is the main component of the soil for growing plants of the present invention, includes hydrophilic fine-grain cotton subjected to interface treatment, hydrophilic fine-grain cotton subjected to the same treatment, and low-level repellent. Fine-grained cotton with water-based,
Water-repellent fine-grain cotton treated with silicone is selected and used.

The fine-grained cotton is 50 to 50 in the range of 2.38 to 4.75 mm in the screen of the shaking and sieving machine of JIS Z8801.
100%, 50% to 0% of 4.75 mm or more of the balance, and fine cotton is 50% to 100% in the range of 0.5 to 5.38 mm in the sieve of JIS Z8801 shaking and sieving machine. , 50% of 2.38 mm or more of the rest
It is preferably 0%.

Peat moss (pH value 3 ~)
For 4), crushed water moss deposits are used.

Pumice stone mixed with rock wool granular cotton and peat moss strips as the main component of soil is small grains (4 to 8 mm) and medium grains (8 to 8 mm).
It is preferable to divide it into 12 mm) for use. Vermiculite (No. 2) is also used in much the same way as pumice.

As the pH adjuster, for example, slaked lime, organic lime or the like is used.

Nitrogen fertilizer, phosphate fertilizer, and potassium fertilizer are added to the soil as single fertilizer or compound fertilizer depending on the application. In addition, BM heavy burned phosphorus is used as a part of the fertilizer component.

In addition, granular materials of organic synthetic foam such as hard urethane are blended and used as a material for improving air permeability.

When using the peat moss hydrophilically,
Activator is added.

The rock wool granular cotton and peat moss are the main components, and pumice (or vermiculite), pH adjuster, fertilizer components, etc. are mixed to prepare the soil, and the compounding ratio is the optimum value depending on the application and cultivation method. 20 to 60% by volume of rock wool granular cotton, 20 to 70% by volume of peat moss, pumice or vermiculite 10
-40% by volume, pH-adjusting agent 0.05-0.2% by volume, fertilizer component 0.1-2.0% by volume is preferable. It has been proved by a cultivation experiment that the effect of is not obtained.

Then, as the rock wool granular cotton of the above soil, when using hydrophilic fine-grain cotton and water-repellent fine-grain cotton together,
It is possible to widely adjust the water retention capacity of the soil. In addition, the use of hydrophilic fine cotton having a small particle size is effective in preventing sinking of plant species, for example. Pumice stone (or vermiculite) mixed in the soil is not only an extremely effective mixture for keeping the soil in a highly air-permeable state, but also absorbs the water in the soil so that the soil is over-humidified. It also plays a role in preventing In particular, the mixture of rock wool and peat moss has poor water absorption after drying once (mainly due to the property of peat moss), but pumice instead absorbs water, causing a decrease in water absorption. There is no fear.

On the other hand, the pH adjuster mixed in the soil is p
PH where H is optimum for the growth of many plants (5.5-5.5)
6.5) or close to it, and in order to make its properties and nutrients as close to natural soil as possible, it is effective.

The fertilizer to be added to the soil is not particularly limited, but BM heavy burned phosphorus is effective for rooting.

Next, various examples according to the present invention (for cyclamen cultivation)
Are shown as a table.

The following table shows the water content (volume%) of the soil in each of the examples.

In the above table, pF0 is the state when the soil is sufficiently moistened and then the water that falls out by gravity is dropped.
5 is a value when 32 cm of suction is applied due to the difference in water column pressure.

That is, according to the present invention, as shown in the soil water content of the above-mentioned example, the soil for plant cultivation excellent in prevention of overhumidity can be obtained.

[Effects of the Invention] As described in detail above, according to the present invention, rock wool granular cotton and peat moss are the main components, and granular pumice and / or granular vermiculite is blended into the rock wool granular cotton. Is a fine-grain cotton having hydrophilicity, a fine-grain cotton having hydrophilicity, and a fine-grain cotton having water repellency. Good water retention and breathability,
In addition, it is possible to obtain a plant-cultivating soil having excellent performance in preventing overhumidity.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Chiharu Nakamura Mure 396, Muremura, Josuinai District, Nagano Prefecture Nichias Ceratech Co., Ltd.

Claims (2)

[Claims] 1. Rock wool granular cotton 20 to 60% by volume and peat moss 20 to 70% by volume are the main components, and granular pumice and / or granular vermiculite 10 to 40% by volume are blended, and the rock wool granular The cotton is composed of hydrophilic fine-grained cotton which has been subjected to an interfacial treatment, or hydrophilic fine-grained cotton which has been subjected to the interfacial treatment, and fine water-repellent fine-grained cotton, or hydrophilic fine-grained cotton. Cotton is JIS Z88
No. 01 in the sieve of the shaking sieving machine 2.38 ~
50-100% in the range of 4.75mm, 75mm of the rest
The above is 50% to 0%, and fine cotton is JIS Z8
0.5 in the sieve of the 801 shaking and sieving machine
50-100% in the 2.38 mm range, 2.3 of the balance
8 mm or more is 50 to 0% of the soil for growing plants. 2. The plant-cultivating soil according to claim 1, which contains a pH adjusting agent in an amount of 0.05 to 0.2% by volume.