JP2011217625A - Method for cultivating vegetable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for cultivating vegetable in which when vegetable is grown, generation and proliferation of moss, algae, weeds or the like to a culture medium surface for cultivation can be inhibited, and diseases and generation of insect pests can be inhibited, water and fertilizers are easy to permeate into the culture medium, and moreover vegetable can be grown healthfully.SOLUTION: The vegetable is grown by the culture medium for cultivation covered with a carbonized material of vegetable origin of pH 7-9. Chaff smoked charcoal is preferably used as a carbonized material of vegetable origin. Thereby, the generation and proliferation of moss, algae, weeds or the like to the culture medium surface for cultivation can be inhibited, the diseases and generation of insect pests can be inhibited, and the vegetable can be grown healthfully.

Description

  The present invention relates to a plant cultivation method, and more particularly, to a plant cultivation method using plant-derived carbides.

  When cultivating plants regardless of outdoor cultivation or house cultivation, moss, algae, weeds, etc. may be generated and propagated on the soil surface. When moss, algae, weeds, etc. are generated and propagated on the soil surface, the moisture and nutrients that should be given to the plant are lost, and the growth of the plant is hindered. Therefore, the generation and growth of moss, algae, weeds, and the like are suppressed by covering the soil with vinyl or non-woven sheets, wood chips, rice husks, etc., and blocking the sun. In addition, the generation and growth of moss, algae, weeds, and the like are also suppressed by spraying herbicides.

  In the method of covering the soil with a sheet made of vinyl or non-woven fabric, generation and growth of weeds and the like can be suppressed by blocking sunlight (see Patent Document 1). However, since fertilizer is sprayed on the sheet, moss and algae are generated and propagated on the sheet. Moreover, since water and a fertilizer will be spread on a sheet | seat, water and a fertilizer become difficult to be absorbed by soil. Furthermore, since the soil is covered with a sheet, the soil surface is difficult to dry, and diseases and insect damage are likely to occur.

  In the method of covering the soil with rice husks, generation / growth of moss, algae, weeds, and the like can be suppressed by blocking sunlight (see Non-Patent Document 1). However, it can prevent moss generation and proliferation for a period of about 2 to 3 months, but when cultivating a plant for a longer period, the rice husk itself rots, causing the occurrence of diseases and pests. Moss, algae, and weeds are generated and propagated. In addition, since the nitrogen content in the soil is consumed in the process of rot of rice husk, the nitrogen content necessary for the plant to be cultivated is insufficient, resulting in an increase in the amount of fertilizer sprayed. Thus, the method of covering soil with rice husk is not suitable for cultivation of plants having a long cultivation period. Furthermore, since water and fertilizer are sprayed on the rice husk having low permeability, the rice husk repels water and fertilizer, so that the water and fertilizer do not easily penetrate into the soil.

  In the method of covering commercially available rice husk charcoal on the soil surface, generation / growth of moss, algae, weeds, etc. can be suppressed by blocking sunlight (see Non-Patent Document 2). However, commercially available rice husk charcoal has a pH as high as about 12 and may significantly inhibit the growth of plants to be cultivated.

  Thus, when cultivating plants, it is possible to prevent the occurrence and growth of moss, algae, weeds, etc. on the soil surface, prevent the occurrence of diseases and pests, and water and fertilizer can easily penetrate into the soil, There was no technology that could grow healthy. In view of the above background, there has been a demand for a method for cultivating plants that can prevent the generation and growth of moss, algae, weeds, and the like on the soil surface.

JP 2000-050740 A

Published by Totsutsugu Akagi, “Monthly Contemporary Agriculture”, published by the Norinsan Fishing Village Cultural Association, November 2005 Published by Tsunayuki Koga, “Separate volume modern agriculture”, published by the Noriyama Fishing Village Cultural Association, published in July 2004

  The present invention, when cultivating plants, can prevent the growth and growth of moss, algae, weeds, etc. on the surface of the culture medium, and can prevent the occurrence of diseases and pests, water and fertilizer can easily penetrate into the medium An object of the present invention is to provide a method for cultivating plants, in which plants can grow healthy.

  As a result of earnest research, the present inventors have cultivated plants with a cultivation medium coated with plant-derived carbides having a pH of 7 to 9, thereby preventing the occurrence and growth of moss, algae, weeds, etc. on the cultivation medium surface. The present inventors have found that this can be done and have completed the present invention.

  According to the present invention, by cultivating a plant with a cultivation medium coated with a plant-derived carbide having a pH of 7 to 9, generation / growth of moss, algae, weeds, etc. on the cultivation medium surface can be prevented. Moreover, since plant-derived carbides having a pH of 7 to 9 are highly permeable and breathable, they can prevent the occurrence of diseases and pests, and water and fertilizer can easily penetrate into the culture medium, thus cultivating healthy plants. it can.

It is a graph which shows the relationship between the cultivation period of tea and the suppression rate of moss and algae. It is a graph which shows the relationship between the cultivation period of tea and the suppression rate of weeds. It is a graph which shows the relationship between the cultivation period of round-leaf eucalyptus, and the inhibition rate of moss and algae. It is a graph which shows the relationship between the cultivation period of round leaf eucalyptus, and the suppression rate of weeds.

  In the present invention, a plant is cultivated in a cultivation medium coated with a plant-derived carbide having a pH of 7 to 9.

(Target plant)
The present invention can be applied to any plant. It is preferable that the present invention is applied to a woody plant having a cultivation period longer than that of a herbaceous plant because the effect of the present invention can be remarkably exhibited. Examples of woody plants include Eucalyptus plants, Pinus plants, Cryptomeria plants (such as Cryptomeria japonica), and Prunus plants (Prunus spp.). , Prunus mume, Prunus tomentosa, etc., Avocado plants, Mangofera plants (Mangofera indica, etc.), Acacia plants, Yamamo plants, Yamamo plants , Quercus plants (such as Quercus acutisima), grape (Vitis) plants, apple (Malus) plants, rose (R sa) plants, Camellia plants (such as Camellia sinensis), Jacaranda plants (such as Jacaranda mimosifolia), crocodiles (Persea) plants (Avocado, etc.) Can be mentioned. Among these, when applied to eucalyptus, pine, cedar, cherry, mango, avocado, acacia, bayberry, knugi, grapes, apples, roses, camellia, tea, ume, eusloume, jakaranta, etc., the effect of the present invention will be demonstrated more. Yes. Among them, Eucalyptus plants, Pine plants, Sugi plants, Sakura plants, Mango plants, Camellia plants and Camellia plants are preferable, and in particular, if the present invention is applied to Eucalyptus, Pine, Sugi, Sakura, Mango, Avocado, Cha, etc. A great effect can be obtained.

  The cultivation method of the present invention can be applied to any of the above-mentioned plant seeds, seedlings obtained by culturing the seeds in a seedling container, shoots, or grafted seedlings. Shoot refers to all unrooted tissues having rooting ability. Examples of the tissue include branches, stems, apical buds, buds, adventitious buds, leaves, cotyledons, hypocotyls, adventitious embryos, shoot primordia, and the like. The origin of the shoot is not particularly limited, and it may be obtained from a plant individual growing in a greenhouse or outdoors, may be a cultured tissue obtained by a tissue culture method, or may be a natural plant body. It may be a departmental organization. The shoot can be efficiently obtained from the main plant of the cutting head and the multi-bud. Among them, cutting ears (cutting ears obtained from the mother plant), polyblasts obtained by aseptically culturing organs collected from the mother plant by the tissue culture method, or aseptically growing the organs The obtained foliage is preferable.

  In the present invention, when a plant shoot is cultivated, a shoot obtained by a tissue culture method may be used as a shoot. The multi-bud can be derived by cutting the top buds, buds and the like from the plant to which the present invention is applied to produce cloned seedlings, and tissue-cultivating them. As a method for obtaining a multi-bud by aseptically culturing an organ collected from a mother plant, for example, in order to form a multi-bud from the above-mentioned woody plant, JP-A-8-228621 discloses It can be performed according to the described method and conditions.

  In the present invention, as described above, in cultivating plant shoots, cutting ears may be used as shoots. As cuttings, buds and leaves can be used in addition to green branches (current year branches) and mature branches (branches extending before the previous year). In the case of woody plants, green branches and mature branches are usually used as cuttings, and in the case of herbaceous plants, leaves and buds are usually used as cuttings.

(Carbide derived from plants)
Examples of the raw material for the plant-derived carbide of the present invention include wood, bamboo, grass, and crop residues. Examples of the carbonized products of the crop residues include harvested residues such as cereal shells and coconut shells, and carbonized products such as squeezed cocoons of oil plants such as palm. Of these, carbide of cereal shells is preferable because of its high permeability and air permeability, and carbide of rice husks (chaff husk charcoal) is more preferable.

  The plant-derived carbide of the present invention can be used after being pulverized so as to have an appropriate particle size when it is large. By setting the particle size to 2 to 15 mm, preferably 5 to 8 mm, moderate permeability is obtained. Can be breathable. In the case of using rice husk carbide (rice husk husk charcoal) as the plant-derived carbide, the particle size after carbonization is about 5 to 8 mm.

  The plant-derived carbide of the present invention has a pH of 7 to 9, more preferably 7.5 to 8.5. If the pH is less than 7 or greater than 9, plant growth tends to be inhibited.

  The carbonization degree of the plant-derived carbide of the present invention is preferably 60% by mass or more, and more preferably 80% by mass with respect to the total mass of the plant-derived carbide. When the degree of carbonization is less than 60% by mass, the period during which generation / growth of moss, algae, weeds, etc. can be suppressed tends to be shortened. The degree of carbonization can be measured by a conventionally known method. For example, the degree of carbonization can be calculated by measuring an electric resistance value.

  The method for producing the plant-derived carbide of the present invention is not particularly limited. For example, the plant as a raw material may be dried and carbonized. Carbonization treatment is broadly divided into an internal combustion type and an external combustion type, and the internal combustion type burns a part of the raw material in a furnace and maintains the carbonization temperature by the heat. In the external combustion type, the carbonization temperature is maintained by heating the outside of the furnace with a kerosene burner or the like. A conventionally known carbonization furnace may be used for the carbonization treatment. Carbonization furnaces are broadly classified into batch and continuous types. The batch type is an open type such as a simple type or a flat furnace type, the closed type is a charcoal kiln type, a trolley type, a stirring type, etc. Examples thereof include a rotary type such as a formula, a fluidized bed type and a multistage stirring type.

  The carbonization conditions are not particularly limited because they vary depending on the type of plant used as a raw material. In the case of rice husk, generally, carbide can be obtained by carbonizing at 400 to 600 ° C. for 1 to 2 hours. The pH of the plant carbide can be adjusted by adjusting the time of carbonization. Compared to commercially available plant carbonized products having a pH of about 12, a plant carbonized product having a pH of 6 to 8 can be produced by setting the carbonization time to about 80%. Moreover, it is preferable that the plant-derived carbide of the present invention keeps the shape of the plant as a raw material at 80% or more because the permeability and air permeability are good and the plant can grow healthy.

(Plant cultivation)
In the present invention, plants are cultivated in a cultivation medium coated with a plant-derived carbide having a pH of 7-9. The method for coating the cultivation medium with plant-derived carbide is not particularly limited as long as the cultivation medium surface can be completely covered by spraying the plant carbide obtained by the above-described method on the cultivation medium. However, it can usually be carried out by spraying a plant carbide on the cultivation medium so as to have a thickness of about 0.5 to 1.5 cm. Thereby, generation | occurrence | production and proliferation of moss, algae, weeds, etc. on the culture medium surface can be suppressed efficiently, and generation | occurrence | production of a disease and a pest can be suppressed.

  In the present invention, when a shoot is used as a plant, rooting from the shoot can also be performed by cultivating the plant in a cultivation medium or medium coated with a plant-derived carbide having a pH of 7 to 9.

(Culture medium)
The culture medium of the present invention refers to a medium in which water or a liquid medium is held on a support described later.

  The liquid medium used in the present invention may contain inorganic components, carbon sources, vitamins, amino acids, plant hormones, and the like.

  Examples of the inorganic component include elements such as nitrogen, phosphorus, potassium, sulfur, calcium, magnesium, iron, manganese, zinc, boron, molybdenum, chlorine, iodine and cobalt, and inorganic salts containing these. Examples of the inorganic salt include potassium nitrate, ammonium nitrate, ammonium chloride, sodium nitrate, potassium monohydrogen phosphate, sodium dihydrogen phosphate, potassium chloride, magnesium sulfate, ferrous sulfate, ferric sulfate, manganese sulfate, and zinc sulfate. , Copper sulfate, sodium sulfate, calcium chloride, magnesium chloride, boric acid, molybdenum trioxide, sodium molybdate, potassium iodide, cobalt chloride, and the hydrates thereof. As an inorganic component, 1 type can be selected from the said specific example, or it can use in combination of 2 or more type. The liquid medium used in the present invention preferably contains nitrogen, phosphorus, and potassium as essential elements. Therefore, among the specific examples of these inorganic components, nitrogen, phosphorus, potassium, inorganic salts containing nitrogen, inorganic salts containing phosphorus, and inorganic salts containing potassium are preferable, and inorganic salts containing nitrogen, phosphorus, potassium, and nitrogen are preferred. More preferred. The inorganic component is preferably added so that the concentration in the liquid medium is about 1 μM to about 100 mM, and more preferably about 0.1 μM to about 100 mM in the case of one kind. In the case of a combination of two or more, it is preferably added so as to be about 0.1 μM to about 100 mM, and more preferably about 1 μM to about 100 mM.

  As the carbon source, compounds such as carbohydrates such as sucrose and derivatives thereof; organic acids such as fatty acids; primary alcohols such as ethanol can be used. As the carbon source, one type may be selected from the above specific examples, or two or more types may be used in combination. The carbon source is preferably added to the liquid medium at about 1 g / l to about 100 g / l, and more preferably at about 10 g / l to about 100 g / l. However, when cultivation is performed while supplying carbon dioxide, the medium does not need to contain a carbon source, and preferably does not contain it. Organic compounds that can be a carbon source such as sucrose can also be used as a carbon source for microorganisms. Therefore, when using a medium supplemented with these, it is necessary to grow in a sterile environment, but use a medium that does not contain a carbon source. Thus, cultivation in a non-sterile environment becomes possible.

  As vitamins, for example, biotin, thiamine (vitamin B1), pyridoxine (vitamin B4), pyridoxal, pyridoxamine, calcium pantothenate, inositol, nicotinic acid, nicotinamide, and / or riboflavin (vitamin B2) are used. Can do. As vitamins, one type can be selected from the above specific examples, or two or more types can be used in combination. The vitamins are preferably added so that the concentration in the liquid medium is about 0.01 mg / l to about 200 mg / l in the liquid medium, and the concentration in the liquid medium is about 0.02 mg / l to about 100 mg. It is more preferable to add so as to be / l. In the case of a combination of two or more, it is preferable to add about 0.01 mg / l to about 150 mg / l in the liquid medium, and add about 0.02 mg / l to about 100 mg / l. More preferably.

  Examples of amino acids that can be used include glycine, alanine, glutamic acid, cysteine, phenylalanine and / or lysine. As amino acids, one type can be selected from the above specific examples, or two or more types can be used in combination. The amino acids are preferably added so that the concentration in the liquid medium is about 0.1 mg / l to about 1000 mg / l in the liquid medium in the case of one kind, and in the case of a combination of two or more kinds, It is preferable to add about 0.2 mg / l to about 1000 mg / l respectively in the liquid medium.

  As plant hormones, for example, auxins and / or cytokinins can be used. Examples of auxins include naphthalene acetic acid (NAA), indole acetic acid (IAA), p-chlorophenoxyacetic acid, 2,4-dichlorophenoxyacetic acid (2,4D), indolebutyric acid (IBA), and derivatives thereof. One or more selected from these or a combination of two or more may be used. Examples of cytokinins include benzyladenine (BA), kinetin, zeatin, and derivatives thereof, and one or more selected from these can be used in combination. As plant hormones, only auxins, only cytokinins, or a combination of both auxins and cytokinins can be used. When one kind of plant hormone is used, it is preferably added to the liquid medium so as to be about 0.01 mg / l to about 10 mg / l, and becomes about 0.02 mg / l to about 10 mg / l. It is more preferable to add so that. In the case of two or more kinds, it is preferable to add each to a liquid medium so as to be about 0.01 mg / l to about 10 mg / l, and to add about 0.02 mg / l to about 10 mg / l. It is more preferable.

  In the present invention, a carbon source and plant hormones may be appropriately added to a medium known as a plant tissue culture medium, if necessary, and used as a liquid medium. Examples of the plant tissue culture medium include MS (Murashige-Skoog) medium, Rinsmeier-Skoog medium, white medium, Gamborg B-5 medium, and niche niche medium. Among them, MS medium and Gamborg B-5 medium are preferable. These media can be used by appropriately diluting them as necessary.

  In this invention, a support body means the thing for supporting the plant to grow. The support is preferably one that can be held while supporting the shoot during the cultivation period. A conventional support can be used as the support, and is not particularly limited. Examples of the support include natural soils such as sand and red bean clay; artificial soils such as rice husk charcoal, coconut fiber, vermiculite, perlite, peat moss, and glass beads; porous molded products such as foamed phenol resin and rock wool. be able to. A culture medium for cultivation can be prepared by spraying water or a liquid medium directly on such a support, or by holding the support in a seedling container and holding water or a liquid medium.

(Seedling container)
In the present invention, a seedling container for storing the culture medium can be used. Conventionally used containers can be used as the seedling raising container, and are not particularly limited. For example, a seedling pot, a plug tray, etc. are illustrated. The nursery container may be either a closed type or an open type. In the case of using a sealed container as a seedling raising container, a container capable of supplying carbon dioxide into the container is more preferable. An example of such a seedling container is a container having an opening covered with a carbon dioxide permeable membrane. By using such a container, the humidity of the culture environment can be easily adjusted. The shape of the opening is not particularly limited. The material for the carbon dioxide permeable membrane is not particularly limited, and examples thereof include polytetrafluoroethylene. Further, the pore diameter of the membrane is not particularly limited, and examples thereof include those having a thickness of about 0.1 μm to about 1 μm.

(Cultivation conditions)
The cultivation conditions for cultivating the plant may be appropriately set so as to be suitable for the type of plant to be used, and it is difficult to unconditionally define the type of plant, the state of seedlings, shoots, etc., the type of cultivation medium, etc. However, for example, the temperature is more preferably about 20 ° C to about 30 ° C. Light intensity is expressed as a photosynthetic photon flux density, with preferably about 10μmol / m ² / s~ about 1000 micro mol / m ² / s, about 50μmol / m ² / s~ about 500μmol / m ² / s More preferably. When plant shoots are used, rooting from the shoots is usually observed in about 2 weeks to about 5 weeks. As described above, plant seedlings and harvests can be obtained.

[Action]
In the present invention, the cultivation and cultivation of moss, algae, weeds, etc. on the surface of the cultivation medium can be prevented by cultivating the plant with the cultivation medium coated with a plant-derived carbide having a pH of 7 to 9. The reason is guessed as follows.

  By covering the cultivation medium with plant-derived carbides having a pH of 7 to 9, it is possible to block sunlight, and to prevent the growth / growth of moss, algae, weeds, etc. on the cultivation medium surface. And since the pH of the plant-derived carbide is around 7 to 9, the growth of the plant is not inhibited.

  Moreover, since the plant-derived carbide of pH 7 to 9 of the present invention has high permeability, water and fertilizer can efficiently penetrate into the cultivation medium under the plant-derived carbide during irrigation and fertilization. Furthermore, the plant-derived carbide of pH 7 to 9 of the present invention has high air permeability, so that the surface of the culture medium has an appropriate degree of dryness, suppresses the generation / growth of moss, algae, weeds, etc. Generation of pests can be suppressed, and furthermore, plant-derived carbides themselves do not rot, and therefore do not inhibit plant growth. Therefore, according to this invention, it is guessed that it becomes possible to grow a healthy plant.

  EXAMPLES Next, although this invention is demonstrated in detail based on an Example, this invention is not limited to these Examples.

[Example 1]
From the current branch of the tea (Camellia sinensis), cut out the safium 5-20 cm in length, 1 to 3 nodes, 2 to 6 leaves, and cut about half of the leaf tip side. Adjusted the ears.

  Next, 54 prepared cutting spikes were inserted so that the leaves of the cutting spikes adjacent to the cultivation medium did not overlap. As a culture medium, a liquid medium (a 5-fold diluted Gamborg B5 medium mixed inorganic salt solution with 10 mg / l IBA added as a rooting promoter) is retained on a support (a mixture of equal amounts of vermiculite and peat moss). What was made to use was used. The support is a plug tray (trade name RL-50PT manufactured by Tokai Kasei Co., Ltd., the upper diameter is 5 cm x 5.2 cm, the lower diameter is 2 cm x 2.4 cm, depth is 7.8 cm, The number of cells was 54).

  The surface of the culture medium was coated with rice husk charcoal (pH: 8, carbonization: 80%) produced by the following method so as to have a thickness of 1 cm.

<Manufacture of rice husk charcoal>
The rice husk 200L was put into a simple carbonization furnace, and carbonized at about 400 to 600 ° C. for 2 hours for production.

  In a greenhouse capable of controlling temperature and humidity, the plant was cultivated for 2 months in an environment where the temperature was 25 to 35 ° C. and the humidity was 65% or more, and rooting from the cuttings was promoted. Then, it moved to the vinyl greenhouse where temperature and humidity were not controlled, and cultivated. Cultivation was carried out for 36 weeks from the start of cultivation in a greenhouse capable of controlling temperature and humidity. The suppression rate of moss and algae on the surface of the culture medium and the suppression rate of weeds were measured every 4 weeks, and the survival rate, rooting rate, seedling rate, and seedling height of the plant after 36 weeks were evaluated. Fig. 1 shows the inhibition rate of moss and algae, Fig. 2 shows the inhibition rate of weeds, and Table 1 shows the survival rate, rooting rate, seedling rate, and seedling height.

<Suppression rate of moss and algae (%)>
The area of moss and algae on the surface of the culture medium in the plug tray was measured by visually measuring the area of moss and algae on the surface of the culture medium in the plug tray, and was calculated by the following formula.
Total growth area of moss and algae / total area of culture medium surface x 100 (%)
<Weed suppression rate (%)>
Number of cells with one or more weeds breeding / total number of cells x 100 (%)
<Plant survival rate (%)>
Number of individuals surviving after cultivation / total number of individuals x 100 (%)
<Plant survival rate (%)>
Number of individuals rooted by the end of cultivation / total number of individuals x 100 (%)
<Seedling rate (%)>
Number of individuals above 9 cm in height above the end of cultivation / total number of individuals x 100 (%)
<Plant seedling height (cm)>
The length of the above-ground part of the plant was measured and the average seedling height was calculated.

[Comparative Example 1]
A plant was cultivated in the same manner as in Example 1 except that rice husk was used instead of rice husk charcoal (pH: 8, carbonization degree: 80%).

[Comparative Example 2]
Instead of using rice husk charcoal (pH: 8, carbonization degree: 80%), commercially available rice husk charcoal (manufactured by Silara, trade name: kun charcoal, pH: 12, carbonization degree: 100%) Plants were cultivated in the same manner as in Example 1.

[Comparative Example 3]
Instead of rice husk charcoal (pH: 8, carbonization degree: 80%), a non-woven fabric (Diatech, product name: fluffy black) is covered on the entire top surface of the plug tray, and a hole is made in the insertion part of the cutting head. Plants were cultivated in the same manner as in Example 1 except that.

[Comparative Example 4]
Plants were cultivated in the same manner as in Example 1 except that the cultivation medium was not covered with rice husk charcoal (pH: 8, carbonization degree: 80%).

[Example 2]
A vinyl greenhouse that uses rooted seedlings of round leaf eucalyptus (Eucalyptus pulverulenta) as a plant to be cultivated, and uses a mixture of equal amounts of red jade soil, kanuma soil, vermiculite, peat moss, and is not controlled in temperature and humidity The plants were cultivated in the same manner as in Example 1 except that the seedlings were continued for 28 weeks. Fig. 3 shows the inhibition rate of moss and algae, Fig. 4 shows the inhibition rate of weeds, and Table 2 shows the survival rate, rooting rate, seedling rate, and seedling height.

A rooted seedling of Eucalyptus pulverulenta was obtained as follows. Tissue obtained from round leaf eucalyptus is subcultured in a solid medium (Murashige-Skoog inorganic salt (MS inorganic salt) medium containing gellan gum 2.5 g / L, sucrose 20 g / l, BAP 0.05 mg / l). Repeatedly, the leaves and leaves (shoots) extended to 2 to 5 cm were cut out from the obtained explants, and the shoots were adjusted. The base of the obtained chute was inserted into a foamed phenol resin porous support impregnated with an MS inorganic salt solution containing 2 mg / l IBA (made by Smithers Oasis, trade name: Oasis) at a temperature of 25 ° C., Under red light irradiation with a carbon dioxide concentration of 1000 ppm and a photosynthetic effective photon flux density of 51.3 μmol / m ² / S, culturing was carried out for 1 month to obtain rooted seedlings.

[Comparative Example 5]
A plant was cultivated in the same manner as in Example 2 except that rice husk was used instead of rice husk charcoal (pH: 8, carbonization degree: 80%).

[Comparative Example 6]
Instead of using rice husk charcoal (pH: 8, carbonization degree: 80%), commercially available rice husk charcoal (manufactured by Silara, trade name: kun charcoal, pH: 12, carbonization degree: 100%) Plants were cultivated in the same manner as in Example 2.

[Comparative Example 7]
Plants were cultivated in the same manner as in Example 2 except that the medium was not coated with rice husk charcoal (pH: 8, carbonization degree: 80%).

[Examples 3 to 7]
As plants to be cultivated, cherry (Example 3), avocado (Example 4), pine (Example 5), rooted seedlings of cedar (Example 6), and grafted seedlings of mango (Example 7) are used and supported. Using a mixture of equal amounts of red jade soil, Kanuma soil, vermiculite, peat moss as a body, using a flower pot (diameter: 55 cm, height: 50 cm) as a seedling container, 20 weeks in a vinyl greenhouse where temperature and humidity are not controlled The plant was cultivated in the same manner as in Example 1 except that the seedling was continued. Table 3 shows the inhibition rate of moss and algae after 20 weeks.

Rooting seedlings of cherry, avocado, pine, and cedar are porous support made of foamed phenolic resin in which cuttings are taken from the current year branches of cherry, avocado, pine, and cedar, and MS inorganic salt solution containing 2 mg / l IBA is retained. Inserted into a porous support made of foamed phenolic resin (made by Smithers Oasis, trade name: Oasis) impregnated with MS inorganic salt solution containing 2 mg / l IBA (made by Smithers Oasis, trade name: Oasis) It was obtained by culturing for 1-2 months under irradiation with red light at a temperature of 25 ° C., a carbon dioxide concentration of 1000 ppm, and a photosynthetic effective photon flux density of 51.3 μmol / m ² / S. In addition, mango grafted seedlings were made by attaching Irwin branches to rootstocks (Taiwan mango seeds grown for 3 months in a No. 4 plastic pot containing equal volumes of vermiculite and peat moss mixed soil). It was obtained by aging for 4 weeks in a vinyl greenhouse without humidity control.

[Comparative Examples 8, 11, 14, 17]
Plants were cultivated in the same manner as in Examples 3 to 7 except that rice husk was used instead of rice husk charcoal (pH: 8, carbonization degree: 80%).

[Comparative Examples 9, 12, 15, 18]
Instead of using rice husk charcoal (pH: 8, carbonization degree: 80%), commercially available rice husk charcoal (manufactured by Silara, trade name: kun charcoal, pH: 12, carbonization degree: 100%) Plants were cultivated in the same manner as in Examples 3-7.

[Comparative Examples 10, 13, 16, 19]
Plants were cultivated in the same manner as in Examples 3 to 7 except that the cultivation medium was not covered with rice husk charcoal (pH: 8, carbonization degree: 80%).

  From the above results, when cultivated in cultivation medium coated with rice husk charcoal of pH 7-9, since the inhibition rate of moss / algae and weeds is high, the generation / proliferation of moss / algae and weeds is effectively prolonged. It turns out that it can suppress over a period. Further, since the survival rate, rooting rate, and obtained seedling rate are all high, plant seedlings can be obtained efficiently. In addition, the plants cultivated by the method of the present invention have a large seedling height and good growth, and not only the seedling height but also the leaf spread, color, and gloss were good. It can be seen that it can be acquired.

Claims (8)

  A method for cultivating a plant, wherein the plant is cultivated in a cultivation medium coated with a carbon derived from a plant having a pH of 7 to 9.   The plant cultivation method according to claim 1, wherein a carbonization degree of the plant-derived carbide is 60% or more.   The cultivation method of the plant in any one of Claim 1 or 2 whose said plant-derived carbide | carbonized_material is rice husk husk charcoal.   The cultivation method of the plant in any one of Claim 1 to 3 which performs cultivation of the said plant using a seedling container.   The method for cultivating a plant according to any one of claims 1 to 4, wherein the plant shoot is cultivated in a medium coated with a plant-derived carbide having a pH of 7 to 9, and rooted from the plant shoot.   The method for cultivating a plant according to claim 5, wherein the shoot of the plant is a cutting ear.   A culture medium having a carbonization degree of 60% by mass or more and coated with a plant-derived carbide having a pH of 7 to 9.   The cultivation medium according to claim 7, wherein the plant-derived carbide is rice husk straw charcoal.

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