JP5354212B2 - Molded body for plant growth - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a new mold for growing a seedling which has excellent formation stability and is easily handled with a machine even when planted in the ground, and in which the seedling can be stably stored for a long period of time. <P>SOLUTION: The mold for growing a seedling is formed into a hollow-cylindrical shape and includes at least waste paper and a fertilizer. The mold is covered with nonwoven fabric. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

The present invention relates to utilization of waste paper, which is a waste that is required to be reused, and relates to a plant growth molded body in which a waste paper molded body is covered with a nonwoven fabric.

Waste paper (old newspaper, old magazine, old cardboard, secondhand book, used copy paper, etc.) has been recycled into toilet paper, tissue, paper towels, cardboard, etc. And there is a price limit (for example, if paper with the same whiteness is made from recycled paper raw materials with the current technology, the price will be higher than that of pulp); The supply is significantly higher than demand due to the fact that a large amount of waste paper has flowed into the market due to the charge of system waste, and that the local government is eagerly recycling waste paper.
On the other hand, incineration of used paper increases carbon dioxide emissions and is subject to laws and regulations due to dioxin contamination.
Therefore, various new utilization methods of used paper have been studied. For example, Patent Document 1 is known as a molded article for plant growth containing used paper and fly ash or clinker ash.

Japanese Patent No. 3581557

The molded body for plant growth of Patent Document 1 has the following problems. That is, since it is made of waste paper, it easily collapses when it contains moisture, and when a seedling is planted and watered, the molded body collapses. In addition, there is a problem that the stability of the form cannot be maintained even when the seedling is transported, and the machine cannot be handled even when planting on the land. In order to solve this problem, when a commercially available plastic pot is used together, the stability of the form can be maintained, but depending on the storage period of the seedling, the root of the seedling may grow. There was a problem that the seedling itself was weakened because it was too much around the pot.
An object of this invention is to provide the molded object for plant growth which reused the new waste paper different from the above.

As a result of diligent research to solve the above-mentioned conventional problems, surprisingly, all the above problems were solved by covering the hollow cylindrical seedling growth molded body containing at least waste paper and fertilizer with a nonwoven fabric. The present invention has been achieved.
That is, the present invention has the following configuration.
[1] A molded object for growing seedlings, which is a hollow tubular shaped molded object for growing seedlings containing at least used paper and fertilizer, wherein the molded body is covered with a nonwoven fabric.
[2] The molded object for seedling growth according to [1], further including steel slag.
[3] The seedling according to [1] or [2], wherein the weight ratio of steel slag to waste paper is 4: 6 to 7: 3, and the water content is 10% by weight or less. Molded body for growth.
[4] The molded object for seedling growth according to [1], further comprising fly ash or clinker ash.
[5] The weight ratio of fly ash or clinker ash to waste paper is 3: 7 to 7: 3 in fly ash or clinker ash: waste paper, and the water content is 10% by weight or less. 4] The molded object for seedling growth according to [4].
[6] The molded object for growing seedlings according to any one of [1] to [5], wherein the fertilizer content is greater than 0 parts by weight and less than or equal to 20 parts by weight with respect to 1 part by weight of waste paper.
[7] The molded object for growing seedlings according to any one of [1] to [6], wherein the cylindrical shape is a cylinder.
[8] The molded object for seedling growth according to any one of [1] to [6], wherein the cylindrical shape is a quadrangular prism.
[9] The molded object for seedling growth according to any one of [1] to [8], wherein the molded object is divided into a plurality of parts.
[10] A method for stabilizing the long-term storage of seedling seedlings, wherein the seedlings are placed in a hollow portion of the molded body for seedling growth according to any one of [1] to [9] and stored for a certain period.
[11] A seedling is placed in the hollow part of the molded body for seedling growth according to any one of [1] to [9], and after seedling is cultivated for a certain period of time, it is planted on a planned planting site to grow the seedling. A seedling planting method characterized by that.

According to this invention, even if it is a molded object containing used paper, a molded object does not collapse and stability of a form can be maintained also when transporting a seedling. In addition, when planting on the land (at the time of planting), handling with a machine can be easily performed. Furthermore, even if the seedlings are stored for a long time, the roots of the seedlings do not grow too much, and the growth (state) of the seedlings can be maintained only by watering. Therefore, it brings about a very great effect that it is possible to freely control the time of shipping seedlings and the time of planting. In terms of environmental education for youth, planting during summer vacation, which was impossible until now, has become possible under summer conditions.

It is a photograph which shows a root system observation result when a plant seedling is planted in the molded object of this invention, and six months pass. (A) Root system, (b) Whole plant It is a photograph which shows a root system observation result when planting a plant seedling in the conventional vinyl pot and having passed for six months. It is a photograph which shows the change at the time of applying water to the molded object (this invention) coat | covered with the nonwoven fabric, and the molded object which is not coat | covered. (A) 0 minutes later, (b) 10 minutes later, (c) 30 minutes later. It is a photograph which shows the change at the time of applying water to the molded object (this invention) coat | covered with the nonwoven fabric, and the molded object which is not coat | covered. (D) After 60 minutes, (e) After 120 minutes. It is a figure which shows the result of having tested the growth promotion effect of the plant at the time of mixing steel slag with a used paper changing a ratio. (A) is a test result of mixing steel slag with waste paper. The upper row is a photograph showing the observation result, and the lower row is a graph showing the measurement result of the growth amount (mm). It is a figure which shows the result of having tested the growth promotion effect of the plant at the time of mixing clinker ash with a used paper in a different ratio. (B) is a test result of mixing clinker ash with waste paper. The upper row is a photograph showing the observation result, and the lower row is a graph showing the measurement result of the growth amount (mm).

The present invention is described in detail below.
The used paper used in the present invention includes old newspapers, old magazines (weekly magazines, comic magazines, monthly magazines, etc. used), old cardboard, used books, used copy papers, and the like. The used paper used in the present invention further includes paper waste in the printing and bookbinding industry, paper in the paper and pulp manufacturing industry, or cellulose-containing sludge.

The nonwoven fabric used in the present invention may be any nonwoven fabric as long as the shape of the molded body can be stably maintained. Even when the molded body contains moisture or even in a dry state, It is necessary to be able to maintain the molded body when implanting. In addition to maintaining the shape of the molded body, the nonwoven fabric allows oxygen to pass through when seedlings (and seedlings) are placed in the hollow part of the molded body and stored for a certain period of time, so that the seedlings (and seedlings) grow excessively. It is also responsible for the seedling maintenance function of suppressing root growth and root growth. Any material having such properties may be used, and the durability is preferably 1 year or longer, more preferably 2 years or longer. Moreover, since the molded body of the present invention is used by being buried in the soil, it is desirable that it is decomposed in the soil and assimilated into the soil from the viewpoint of environmental friendliness. Since some nonwoven fabrics having such properties are already on the market, they may be used.

In addition to waste paper, examples of components to be contained in the molded body include fertilizer, steel slag, fly ash, and clinker ash.

The fertilizer used in the present invention is not particularly limited, and includes any commercially available fertilizer. That is, if it is a substance that is applied to the soil to provide nutrients to the plant, ingredients (nitrogen fertilizer, phosphate fertilizer, potash fertilizer, compound fertilizer, etc.), physical and chemical properties (acidic, neutral or alkaline fertilizer, inorganic or Regardless of organic fertilizer, water-soluble or poorly water-soluble fertilizer, concentrated fertilizer, etc., fertilization time (basic fertilizer, additional fertilizer, etc.), fertilization rate (fast or slow acting fertilizer), etc. The fertilizer used in the present invention further includes compost and humus produced from garbage, fallen leaves, activated sludge generated from a sewage treatment plant, and the like.
Tree seedlings, grasses or tree seeds used in the present invention are not particularly limited. For example, seeds of vegetables, flowers, turfgrass, flowering trees, trees for planting trees, foliage plants and the like can be used.
The water used in the present invention is not particularly limited, and tap water, ground water, river / lake water and the like can be used, and soft water and hard water are not limited.

Iron and steel slag is obtained by cooling blast furnace slag in which components other than iron of iron ore melted in a blast furnace that produces pig iron are separated and recovered together with lime in auxiliary materials and ash in coke. . Blast furnace slag has components similar to natural rocks and produces approximately 290 kg per ton of pig iron. Slag that has just been removed from the blast furnace is in a molten state of about 1500 ° C, but there are granular and rock-like ones depending on the cooling method. The steel slag used in the present invention is preferably granular, and it is desirable to use it by crushing it when the particle size is large even if it is rocky or granular.

Fly ash and clean ash include ash that is generated when coal or oil is burned in a boiler or the like for thermal power generation or for heating of a building or the like, but in a narrower sense, it is mainly generated in a thermal power plant. Therefore, it includes ash produced when coal or oil is burned, particularly fine ash in flue gas, and more narrowly defined in JIS A 6201 (1958). According to JIS A 6201, fly ash and clinker ash are fine ash particles collected from a pulverized coal combustion boiler with a dust collector. Silica is 45% or more, moisture is 1% or less, loss on ignition is 5% or less, specific surface area is 2700 cm. ² / g or more, specific gravity of 1.95 or more, and it is defined that 75% or more passes through a 44 μ standard sieve. Any of the above fly ash and clean ash used in the present invention may be used, but the narrower the better.

The method for producing the molded article of the present invention is not particularly limited, but usually, waste paper, steel slag, fly ash or clinker ash and water are mixed, dehydrated as necessary, and then molded into a desired shape, and then dried. Can be obtained.
The amount of each component used may be such that the dried product has the above-described component ratio, but it is preferable to use a relatively large amount of water in consideration of the efficiency and ease of mixing.
Prior to mixing, the waste paper is preferably cut to a width of usually 5 cm or less, particularly 2 cm or less, excluding foreign matter (for example, a metal such as a staple needle of a magazine). The narrower the cutting width, the better the mixing efficiency. There is no restriction | limiting in particular also about the mixing order of each component, For example, all the components may be mixed at once, for example, steel slag or fly ash may be added after mixing waste paper and water and making it slurry.
Mixing is usually performed by simple mixing or kneading.

Of the method for producing a molded body of the present invention, the case where waste paper, water, fertilizer, steel slag, fly ash or clinker ash are mixed as necessary to form a slurry, and then the slurry is molded into a sheet will be described below. To do. The thickness of the sheet is preferably 0.1 to 1 cm as the thickness after drying. There are no restrictions on the shape and size of the sheet, and any shape and size can be set according to demand. The molded body of the present invention can be obtained by forming the sheet thus obtained into a hollow cylindrical shape and drying it.
There is no restriction | limiting in particular in a drying temperature and a drying method, For example, it can carry out by ventilation drying, heat drying, natural drying etc. in the temperature range of normal temperature to 150 degreeC. In addition, although the above was shape | molded in the hollow cylinder shape after sheet | seat shaping | molding, of course, you may cast | cast the said slurry directly to the type | mold of desired shape, dry and shape | mold in a hollow cylinder shape.

Since the surface of the molded body of the present invention is coated with a nonwoven fabric, the shape is stably maintained, and the storage period is not particularly limited, and can be stored for several years or more. When using, it is necessary to absorb moisture sufficiently before use. Place seedlings in the molded body, or plant seedlings in the molded body that has absorbed moisture, and add soil and other components as necessary. be able to.
The cylindrical molded body thus obtained is stored indoors or outdoors until shipment. The storage period can be from several months to about 2 years. During this period, it is desirable to keep the plant growing conditions such as watering and light irradiation.
Then, after storage, when moving and finally planting in the planned planting site, it is conceivable to dig a hole in the soil and stand the molded body so as to fill the top of the cylinder to the same extent as the surface of the land. Planting can be done by hand or by machine.

Next, regarding the use ratio of each component in the molded body, when the molded body of the present invention contains fertilizer, 1 to 10 parts by weight of steel slag, fly ash, or clinker ash and fertilizer 0 are used for 1 part by weight of waste paper. More than 20 parts by weight and less than 10 parts by weight of the weight of the sheet is preferable. The amount of steel slag, fly ash, or clinker ash is 5 to 10 weights per 1 part by weight of waste paper. More preferably, the content of water and the fertilizer is 1 to 5 parts by weight, and the water content is 10% by weight or less, particularly 6% by weight or less of the weight of the molded body. If the ratio of steel slag, fly ash or clinker ash to less than 1 part of waste paper is less than 1 part by weight, water retention and light shielding properties may be insufficient, and if it exceeds 10 parts by weight, handling will be difficult due to insufficient strength. There is a fear. Moreover, when the ratio of the fertilizer with respect to 1 weight of used paper exceeds 20 weight part, there exists a possibility that handling may become difficult because of insufficient strength. From the viewpoint of growing plants, the ratio of fertilizer to 1 part by weight of waste paper is preferably 1 part by weight or more. Moreover, when the content of water in the molded body exceeds 10% by weight of the molded body, the strength may be insufficient and handling may be difficult.
Here, not only waste paper but also steel slug, fly ash or clinker ash as an inorganic material is added to prevent waste paper from decaying and creating voids in the planting hole after planting with waste paper alone. Add minerals. The main features of these inorganic materials are (i) a solidifying agent under moisture conditions (ii) fertilizer effect (iii) the raw materials are high-temperature materials and are free of organisms such as bacteria and cysts. It is. Therefore, long-term seedling over 2 years is considered feasible.

There is no restriction | limiting at all in the shape and size of a molded object, It can be set as arbitrary shapes and sizes according to a demand. For example, as long as there is a hollow part in which the seedling is arranged, any cylindrical shape may be used, and any of a cylinder, a quadrangular prism, a triangular prism, and the like may be used. Further, the hollow shape and the tube shape may be different. For example, the case where the inside of a quadrangular prism is hollowed out by a cylinder is also within the scope of the present invention. If it is a square pillar or a square pillar, there is a merit that efficiency is high when many are packed in cardboard or the like. Moreover, the molded object may be divided | segmented into plurality in the longitudinal direction. This is because, when divided, it is convenient for arranging seedlings even if the hollow portion of the molded body is narrow. That is, from the relationship between the hollow part and the thickness and length of the seedling, it may be difficult to put the seedling to the back of the hollow part, but if the molded body is divided in the longitudinal direction (the growth direction of the seedling), After arranging the seedlings, a molded body in which the seedlings are arranged can be easily obtained by combining the divided pieces and the divided pieces.

When seedlings are arranged in the hollow part of the molded body, soil and necessary components can be appropriately added to the space of the hollow part. Further, instead of soil, the same components as the molded body can be dissolved in water and packed in the hollow portion.

Next, the present invention will be described specifically by way of examples.
[Test Example 1] Production of molded body (1) Production of molded body (A) 10 parts by weight of an old magazine excluding foreign matter such as staples were cut into 0.2 cm width, put into a mixer, 2 parts by weight of fertilizer, 500 parts by weight of water was added, and the old magazine was made into a slurry by high-speed rotation of the blades. The resulting slurry was dewatered with a stainless wire mesh, formed into a sheet, then dried with hot air at 110 ° C., and then cut into a sheet having a length of 12 cm, a width of 15 cm, and a thickness of about 0.2 cm. The water content of these sheets was about 3% by weight. These sheets were rolled into a roll shape to form a molded body having a diameter of 10 cm and a height of 20 cm. It was wound around this so as to cover the entire molded body with a commercially available nonwoven fabric to obtain a molded body of the present invention (molded body A).
(2) Production of molded body (B) A molded body was produced by the same method except that 50 parts by weight of clinker ash (manufactured by Joban Thermal Power Co., Ltd.) was added to the slurry in the production method of the molded body (A). Molded body B).
(3) Production of molded body (C) A molded body was produced by the same method except that the clinker ash of the molded body (B) was changed to steel slag (molded body C).

[Example 1] Seedling preservation test (1) Seedling production test Seedlings of Hopea odolata (a kind of tropical timber) were planted on the molded product A obtained in Example 1 and subjected to the test.
(2) Test method The sample was stored in a laboratory room exposed to sunlight at room temperature while performing only water.
(3) Results and Discussion The molded product of the present invention retained its original shape even after 6 months (FIG. 1 (b)). First, it was observed that the root system of the seedling extended from the non-woven fabric of this molded body was exposed to the atmosphere, and the growth of the seedling was maintained over a long period of 6 months as a result of the outside growth being restricted due to drying. . Furthermore, the root density increased due to an appropriate moisture environment inside the compact (FIG. 1 (a)). Although the root system density is the same, there are few root systems that contribute to the improvement of the survival rate in the conventional vinyl pot, and the root system is in a state where there is no place to go (Fig. 2). (FIG. 1A).

[Example 2] Shape stability test of molded body (1) Test method After removing the molded body (A) of the present invention and the non-woven fabric, it was exposed to water at an average of 16 ml / cm ² · min on the upper end of the molded body, and 0 minutes later After 10 minutes, 30 minutes, 60 minutes, and 120 minutes, the state change of each molded body was observed.
(2) Test result results are shown in FIGS.
The molded article of the present invention coated with the nonwoven fabric maintained the same form after 120 minutes (FIG. 3 (e)) as after 0 minute (FIG. 3 (a)), but the nonwoven fabric was removed. The shape has already been lost after 10 minutes (FIG. 3B), and after 120 minutes, the height of the compact has been reduced to about 70%.

[Example 3] Steel slag and clinker ash growth-promoting effect confirmation test for plants (1) Test method (i) Method for adjusting molded body base material Steel slag in a cylindrical glass container according to the method for adjusting molded body base material B : Slurry mixed with steel slag, waste paper, and water so that the waste paper is 0:10, 3: 7, 4: 6, 5: 5, 6: 4, 7: 3, 8: 2, 10: 0. 30 ml was added to obtain a molded article substrate for this test. Moreover, the culture body which replaced steel slag with clinker ash was created similarly.
(Ii) The shaped body obtained in (i) was seeded with shiba, and after 11 days, the state of growth was observed.
(Iii) Method of measuring growth amount The average length from the ground to the leaf edge was determined for 10 individuals.
(2) Test results An observation photograph of the growth of shiba (upper part of the figure) and a growth amount measurement result (lower part of the figure) are shown in FIGS.
From this, it was found that wrinkles cannot be grown only with steel slag, but when waste paper pulp is added, the growth is improved, and the ratio of steel slag: waste paper is suitable at 4: 6-7: 3. It was also found that clinker ash grows alone, but adding root paper improves the root system environment.

According to the molded object for growing seedlings of the present invention, the shipping time of the seedlings can be freely controlled. Therefore, according to the climate of the land to be planted and various other conditions for planting, the seedlings and the seedlings can also be controlled. It is also possible to provide an optimal environment for human beings involved in planting trees.

Claims (11)

A molded object for growing seedlings, which is a hollow tubular shaped molded object for growing seedlings containing at least used paper and fertilizer, wherein the molded article is covered with a nonwoven fabric. Furthermore, the molded object for seedling growth of Claim 1 containing steel slag. The molded body for growing seedlings according to claim 1 or 2, wherein the weight ratio of steel slag to waste paper is 4: 6 to 7: 3 of steel slag: used paper, and the water content is 10% by weight or less. Furthermore, the molded object for seedling growth of Claim 1 containing a fly ash or a clinker ash. The seedling according to claim 1 or 4, wherein the weight ratio of fly ash or clinker ash to waste paper is from 3: 7 to 7: 3, and the water content is 10% by weight or less. Molded body for growth. The molded body for seedling growth according to any one of claims 1 to 5, wherein the fertilizer content is greater than 0 parts by weight and less than or equal to 20 parts by weight with respect to 1 part by weight of waste paper. The shaped body for seedling growth according to any one of claims 1 to 6, wherein the cylindrical shape is a cylinder. The shaped body for seedling growth according to any one of claims 1 to 5, wherein the cylindrical shape is a quadrangular prism. The molded object for seedling growth in any one of Claims 1-8 by which the molded object is divided | segmented into plurality. A method for stabilizing the long-term storage of a seedling seedling, wherein the seedling is placed in a hollow portion of the molded body for seedling growth according to any one of claims 1 to 9, and stored for a certain period. A seedling is characterized in that a seedling is placed in a hollow part of the molded body for seedling growth according to any one of claims 1 to 9, and after seedling is cultivated for a certain period of time, it is planted on a planned planting site to grow the seedling. Tree planting method.