Method for growing plant

Abstract

To provide a method for growing plants that can effectively reduce bacteria or fungi that cause diseases in plants to be grown by setting an upper limit value for the average diameter of micropores that form gaps in sintered particles that are embedded around the plants.SOLUTION: Provided is a method for growing a plant, in which by using soil that constitutes a soil S as a raw material, opening micropores with an upper limit of the average particle diameter of 10 μm or less on the particle surface, and forming a gap within the particles, aerobic and / or anaerobic bacteria in the soil S can live. And the method can achieve the above problems by burying sintered particles 1, which have an average diameter of 3 to 5 mm and thus form the upper limit of the average diameter of the micropores, around the roots of a plant P to be grown.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention is directed to a method for cultivating plants that can reduce bacterial or fungal diseases that inhibit plant growth by embedding sintered particles. [Background technology]

[0002] It is publicly known that in growing plants, burying porous sintered particles to a predetermined depth promotes the growth of the plants. Incidentally, Patent Document 1, in which the representative of the present patent applicant is named as the inventor, employs a basic structure (claim 1) in which "in an area up to 5 cm deep from the ground surface, the porous sintered particles are made from soil containing 18.0% by weight or more of alumina (Al2O3) at a rate of 4.0% by weight or more," and it has been confirmed that the activity of bacteria in the sintered particles contributes to increased crop production (paragraphs

[0014] to

[0016] in the section on the effects of the invention).

[0003] However, although bacteria in soil do not have a particular affinity for alumina (Al2O3), the material of the sintered particles, the sintered particles of Patent Document 1 have a material and numerical limitation of alumina (Al2O3) of 18.0% or more, and therefore the technical range of sintered particles for cultivating bacteria is extremely narrow.

[0004] Furthermore, the method is insufficient in that it does not set an upper limit for the average particle size necessary and sufficient for the inhabitation of aerobic and / or anaerobic bacteria useful for plant growth. Incidentally, the average particle size in the voids of commercially available ceramic particles is 15 to 40 μm. With such an average particle size, it is impossible for aerobic and / or anaerobic bacteria that are beneficial to the growth of the cultivated plants to live there, and furthermore, it is impossible for the particles to exert an effect of promoting the growth of the cultivated plants.

[0005] Furthermore, in Patent Document 1, there is no consideration at all of the effects of the sintered particles with respect to bacteria and fungi such as mold that cause plant diseases.

[0006] Thus, neither Patent Document 1 nor any other known technology has disclosed or suggested a method for cultivating plants by using aerobic and / or anaerobic bacteria living in sintered particles to reduce bacterial or fungal diseases in cultivated plants. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent No. 5959712 Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention aims to provide a method for cultivating plants that can effectively reduce bacteria or fungi that cause diseases in the plant being cultivated by setting an upper limit value for the average particle size of micropores that form gaps in sintered particles that are embedded around the plant. [Means for solving the problem]

[0009] In order to solve the above problems, the basic configuration of the present invention is as follows: (1) The raw material is the soil that makes up the soil. average diameter The upper limit is 10μm or less The micropores Opening on particle surface and forming gaps within the particles. This allows aerobic and / or anaerobic bacteria in the soil to flourish. The average diameter of the micropores is 3 to 5 mm, which defines the upper limit of the average diameter of the micropores. A method for growing plants, comprising burying sintered particles around the roots of a plant to be grown; (2) The method for growing a plant according to (1) above, characterized in that in addition to the micropores opening on the particle surface, gaps are formed by connections between the micropores. It consists of: Effect of the Invention

[0010] Bacteria and fungi that cause plant diseases inhabit the ground on which plants grow, in the vicinity of the ground, and even underground.

[0011] In contrast, both aerobic and anaerobic bacteria are known to act to kill the aforementioned bacteria and fungi.

[0012] Moreover, in the case of sintered particles in which the upper limit value of the micropores opening to the surface is equal to or less than a predetermined value, it is believed that many kinds of aerobic bacteria and / or anaerobic bacteria can live there.

[0013] In the basic configurations (1) and (2), Average diameter of micropores The upper limit is set at 10 μm. and the average diameter is 3 to 5 mm. By burying the sintered particles around the plant, specifically near the surface of the ground around the plant and / or underground, the effect of reducing the activity of the bacteria and fungi is clearly exerted, which in turn contributes to the smooth growth of the cultivated plant.

[0014] As a result, pesticides to prevent bacterial and fungal growth are no longer necessary, and organic solvents can be used. still, The reason why the average diameter of the sintered particles is 3 to 5 mm is that with such an average diameter of the sintered particles, micropores with an average diameter of 10 μm or less are easily formed. The term "reduction" as used herein encompasses both complete prevention and reduction of bacterial and fungal activity, and the specific circumstances of such reduction will be described later in accordance with each embodiment. [Brief description of the drawings]

[0015] [Figure 1] The figures show the state in which sintered particles are buried around a growing plant, where (a) shows the case where the particles are buried near the ground surface, and (b) shows the case where the particles are buried underground. [Diagram 2]Cross-sectional views of sintered particles, where (a) shows the basic structure (1) consisting of micropores with gaps opening to the particle surface, and (b) shows the basic structure (2) consisting of micropores that not only have gaps opening to the surface but also interconnect with each other. [Diagram 3] Photographs of sintered particles, where (a) shows a case where the average particle size is 0.1 to 10 μm and corresponds to the sintered particles of basic configurations (1) and (2), and (b) shows a case where the average particle size is 20 to 100 μm and the sintered particles do not correspond to the basic configurations (1) and (2). [Figure 4(a)] FIG. 3(b) is a photograph showing the state of rose leaves that are infected with black spot even though the sintered particles shown in FIG. 3(b) were buried near the ground surface around the roses. [Figure 4(b)] FIG. 3(b) is a photograph showing the state of leaves and flowers of a rose grown by burying the sintered particles shown in FIG. 3(a) near the ground surface around the rose. [Figure 5(a)] In strawberry cultivation, the pathogen is applied to the ground surface and the sintered particles shown in FIG. 3(a) are buried in the ground. The state of growth is shown immediately after planting the seedlings. [Figure 5(b)] The graph shows the state of flowering of the strawberry plants 43 days after planting the seedlings. [Figure 5(c)] 4 shows the state of fruit set after 172 days of strawberry growth. [Figure 6(a)] In growing soybeans, photographs of the leaves, stems, and roots of soybeans grown without burying the sintered particles of the basic configuration in the ground are shown on the left, and photographs of the leaves, stems, and roots of soybeans grown with the sintered particles buried in the ground are shown on the right. [Figure 6(b)] The photograph on the right shows a soybean pod grown without burying the sintered particles according to the basic configuration in the ground, and the photograph on the right shows a soybean pod grown with the sintered particles buried in the ground. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] The basic structure (1) is as shown in Figs. 1(a) and (b) and Fig. 2(a) and (b), using the soil that constitutes soil S as the raw material. average diameter The upper limit is 10μm or less Micropore 2 Opening on particle surface and forming gaps within the particles. Depending on the type, aerobic and / or anaerobic bacteria in the soil S can live. The average diameter of the micropores is 3 to 5 mm, which defines the upper limit of the average diameter of the micropores. This is a method for growing a plant P, characterized in that the sintered particles 1 are buried around the roots of the plant to be grown.

[0017] As already explained, the micropores 2 opening on the surface average diameter In the case of sintered particles having a particle size below a certain value, various kinds of aerobic and / or anaerobic bacteria can live there. However, according to the inventor's experience, the upper limit of the average particle size of sintered particles where these bacteria can easily live is 10 μm.

[0018] The reason why the basic configuration (1) requires aerobic bacteria and / or anaerobic bacteria is that, depending on the distance between the soil S and the ground surface, the pH value, the moisture content, etc., both aerobic and anaerobic bacteria may exist, or only one of them may exist, and this is assumed and realized, but in either case, the effect of reducing the bacteria and fungi is obtained.

[0019] The micropores 2 in the basic structure (1) are required to form gaps that open on the surface, as shown in FIG. 2(a), and this requirement enables the micropores 2 to exert an effect of reducing bacteria and fungi.

[0020] However, in an actual sintered particle 1, not only are there micropores 2 that are open on the surface, as in the basic structure (2), but the openings are connected sequentially inside the particle. However, in the case of most sintered particles 1, gaps are often formed by the connections between the micropores 2, as shown in Figure 2(b).

[0021] However, when the average diameter of the sintered particles 1 is very small, the state shown in FIG. 2(a) may be observed, but as the average diameter increases, there is a tendency for the state shown in FIG. 2(b) to be observed.

[0022] The average diameter of the micropores 2 in the sintered particles depends on the type of soil material, the sintering temperature, and the moisture content before sintering, but the higher the sintering temperature and the higher the moisture content, the larger the average particle size tends to be.

[0023] Furthermore, the overall diameter of the sintered particles also depends on the type of soil used, the sintering temperature, and the moisture content before sintering, but tends to be larger as the sintering temperature is higher and the moisture content is higher.

[0024] According to the above tendency, the smaller the micropores 2 of the sintered particles 1, Sintered particles 1 This is due to the small overall diameter.

[0025] In any case, the gaps communicate with the particle surface via the micropores 2, allowing the aerobic and / or anaerobic bacteria to penetrate into the roots of the plant P and thereby exert the above-mentioned effects.

[0026] FIG. 3(a) shows a photograph of an embodiment corresponding to basic configurations (1) and (2) in which the average particle size of the voids is 0.1 to 10 μm.

[0027] In contrast, FIG. 3(b) shows a photograph of sintered particle 1 in which the average void diameter is 20 to 100 μm and which does not fall under basic configurations (1) or (2).

[0028] Figures 3(a) and 3(b) are photographs of sintered particles in which the average diameters of the micropores 2 were selected to be 0.1 to 10 μm and 20 to 100 μm, respectively, based on the particle size distribution caused by laser beam irradiation.

[0029] A comparison between FIG. 3(a) and FIG. 3(b) supports the tendency that the smaller the average particle size, the smaller the overall diameter of the sintered particles 1.

[0030] The porosity of the sintered particle 1 in FIG. 3(a) is about 60%, whereas the porosity of each sintered particle 1 in FIG. 3(b) is about 30%.

[0031] Each of the porosities is calculated as a percentage (%) corresponding to the value obtained by subtracting from 1 the ratio of the volume of the soil before sintering, i.e., the volume obtained by subtracting the volume of water added from the muddy soil containing water, to the volume after sintering. Such a difference in porosity clearly demonstrates that the case of Figure 3(a), which corresponds to the basic configurations (1) and (2), is more likely to support the habitat of aerobic and / or anaerobic bacteria than the case of Figure 3(b), which does not correspond to the basic configurations.

[0032] The killing effect against bacteria and fungi will be described below with reference to specific embodiments.

[0033] After the rose scab pathogen (Diplocar pon Rosae) was applied around the rose to be grown, the sintered particles 1 of FIG. 3(b) were buried near the ground surface in the area where the particles were applied.

[0034] However, the leaves of the roses showed black spot as shown in Figure 4(a), and the flowers themselves were in an extremely insufficient state.

[0035] In contrast, when the sintered particle 1 of Figure 3(a) was buried near the ground surface on which the black spot fungus had been applied, black spot was prevented, healthy growth was achieved, and sufficient flowering was achieved, as shown in Figure 4(b).

[0036] In strawberry cultivation, strawberry anthracnose (Glomerella cingulata) and yellows (Fusarium oxysporum) occur and are well known to interfere with normal growth and fruiting of strawberries.

[0037] In normal field soil, the strawberry anthracnose pathogen and the chlorosis pathogen were applied to the surface in a 1:1 ratio, and then sintered particles 1 of basic configurations (1) and (2), in which the average diameter of the micropores that form voids is 2 μm, were buried underground in the area where they were applied, containing 5.0% by weight. The average particle size is also based on the measurement of particle size distribution by irradiation with a laser beam.

[0038] Figures 5(a), (b), and (c) show the state of strawberry seedlings at the stage when they were planted in the ground, at the flowering stage 43 days later, and at the fruiting stage 151 days later, respectively.

[0039] As shown in FIG. 5(b), at the flowering stage, strawberry leaves were less green than at the planting stage due to the influence of the pathogen.

[0040] However, as shown in Figure 5(c), at the fruiting stage, the strawberry leaves were restored to their green color, objectively proving the bactericidal effect of the basic composition on bacteria.

[0041] In the basic configurations (1) and (2), an embodiment characterized by promoting the growth of the plant P to be cultivated can be adopted.

[0042] In fact, Patent Document 1 explains that in the case of soil containing porous sintered particles made from soil containing a certain weight percent or more of alumina (Al2O3), the growth of spinach is clearly higher than in soil that does not contain such particles (this point can be easily understood by referring to the photographs in Figures 2(a) and (b), Figures 3(a) and (b), and Figures 4(a) and (b) in Patent Document 1).

[0043] Similar rapid growth can be observed in the plant growth methods of basic configurations (1) and (2).

[0044] The photograph on the left side of Figure 6(a) shows the condition of the leaves, stems, and roots of soybeans grown without sintered particles 1 of the basic configuration being buried, and the photograph on the right side shows the condition of the leaves, stems, and roots of soybeans grown when sintered particles 1 of the basic configuration were buried near the surrounding ground surface.

[0045] Although both were grown for the same period, it is clear that the quantity of leaves and roots, as well as the state of attachment of root nodule bacteria, is greater in the photograph on the right, in which the sintered particles 1 are embedded.

[0046] FIG. 6(b) shows the state of soybeans obtained from the grown soybeans of FIG. 6(a), and the left side shows the state of individual soybeans when sintered particles 1 according to the basic configuration are embedded.

[0047] As is clear from these photographs, larger fruit was achieved when sintered particles 1 were buried, and it was found that the weight of the soybeans actually increased by 32%.

[0048] In this way, by using the methods of basic configurations (1) and (2), an embodiment can be adopted in which the growth of the cultivated plant P is promoted, and further, in the embodiment, an embodiment in which the yield of the plant P is increased.

[0049] The depth to which the sintered particles 1 of basic structures (1) and (2) are buried near the surface of the ground and / or underground around the plant P to be cultivated depends on the type of plant P to be cultivated. In the inventor's experience, however, burying the particles at a depth of 10 cm from the surface of the ground is sufficient to reduce bacterial or fungal diseases in most cases.

[0050] The following will explain the present invention based on examples. EXAMPLES

[0051] The examples are directed to sintered particles 1 used in the plant cultivation methods of the basic configurations (1) and (2).

[0052] The sintered particle 1 is an essential component in the methods of basic structures (1) and (2), and realizes the effects of basic structures (1) and (2) based on the numerical requirements of the micropores 2 and the essential requirements of opening on the particle surface. Therefore, it is based on the methods of basic structures (1) and (2) and can be evaluated as an independent structure as a product. [Industrial Applicability]

[0053] In this way, the present sintered particles can reduce diseases of cultivated plants, while also promoting plant growth and increasing harvest yields, making them extremely valuable in the agricultural field. [Explanation of symbols]

[0054] P Plant S Soil 1. Sintered particles 2 Micropores

Claims

1. A method for growing plants, comprising burying around the roots of a plant to be grown sintered particles, the particles being made of soil, the particles having an average particle size of 10 μm or less, and having gaps formed by micropores opening on the particle surface, in which aerobic and / or anaerobic bacteria in the soil can live.

2. 2. The method for growing plants according to claim 1, wherein in addition to the micropores opening on the particle surface, gaps are formed by connections between the micropores.

3. 3. The method for growing a plant according to claim 1, wherein the lower limit of the average particle size of the micropores is 0.1 μm.

4. 3. The method for cultivating a plant according to claim 1, further comprising the step of promoting the growth of the plant.

5. 5. The method for cultivating a plant according to claim 4, wherein the yield of the plant being cultivated is increased.

6. 3. The method for growing a plant according to claim 1, wherein the average diameter of the sintered particles is 3 to 5 mm.

7. 3. The method for growing plants according to claim 1, wherein the sintered particles are buried at a depth of 10 cm from the ground surface in an amount of about 5% by weight.

8. 3. Sintered particles used in the method for growing plants according to claim 1 or 2.

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