WO2017110626A1 - 高塩環境下における植物の水耕栽培方法 - Google Patents
高塩環境下における植物の水耕栽培方法 Download PDFInfo
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- WO2017110626A1 WO2017110626A1 PCT/JP2016/087261 JP2016087261W WO2017110626A1 WO 2017110626 A1 WO2017110626 A1 WO 2017110626A1 JP 2016087261 W JP2016087261 W JP 2016087261W WO 2017110626 A1 WO2017110626 A1 WO 2017110626A1
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- cultivation
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- salt tolerance
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
- A01G31/02—Special apparatus therefor
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
- A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
- A01N43/06—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom five-membered rings
- A01N43/12—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom five-membered rings condensed with a carbocyclic ring
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/08—Alkali metal chlorides; Alkaline earth metal chlorides
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N63/00—Biocides, pest repellants or attractants, or plant growth regulators containing microorganisms, viruses, microbial fungi, animals or substances produced by, or obtained from, microorganisms, viruses, microbial fungi or animals, e.g. enzymes or fermentates
- A01N63/20—Bacteria; Substances produced thereby or obtained therefrom
- A01N63/25—Paenibacillus
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/20—Bacteria; Culture media therefor
Definitions
- the present invention relates to a method for stably hydroponically cultivating a plant body for a long period of time with a cultivation solution having a sodium chloride concentration of 1% by mass or more.
- sea water is the most abundant water resource on the earth, and this problem can be solved if sea water can be used as agricultural water.
- many plants cannot grow under high salt concentration due to water absorption inhibition by osmotic pressure and inhibition of intracellular enzymes by sodium ions.
- the salt tolerance can be increased to the salt concentration of seawater, it can be expected that the plant can be cultivated using seawater.
- Examples of methods for increasing the salt tolerance of plants include a method for introducing a gene involved in a salt tolerance mechanism using a gene recombination technique. For example, there are halophytes that have acquired resistance to osmotic pressure by accumulating osmolite (proline or betaine) in plant cells. It has been reported that a recombinant plant introduced with a gene for accumulating osmolyte has acquired salt tolerance. In addition, it is known that the SOS1 gene activates the sodium ion to promote its excretion, and a recombinant plant into which this gene has been introduced has been studied.
- osmolite proline or betaine
- a method for increasing the salt tolerance of a plant without using a genetic recombination technique a method of administering a drug or a microorganism having an effect of imparting salt tolerance to a plant to the plant has been studied.
- a drug having a salt tolerance-imparting effect for example, pyrroloquinoline quinone (see, for example, Patent Document 1), plant hormone strigolactone, and the like are known.
- a microorganism having an effect of imparting salt tolerance for example, Paenibacillus fukuinensis (for example, see Patent Document 2) is known.
- the period of application to the plant body is generally limited.
- the cultivation of microorganisms and the like are often costly and labor intensive, and it is often difficult to apply the microorganisms over the entire period of plant cultivation from an economical viewpoint.
- the salt tolerance imparting effect by drugs and microorganisms is not permanent, and it is difficult to grow plants for a long period of time in a high salt concentration environment with a single application.
- the object of the present invention is to provide a hydroponic cultivation method for a plant to enable long-term cultivation of the plant in a high salt concentration environment.
- the hydroponic cultivation method for plants in a high salt environment is the following [1] to [9].
- [1] It has a cultivation process of hydroponically cultivating a plant body with a cultivation solution having a sodium chloride concentration of 1% by mass or more, A high salt environment that maintains the salt tolerance of the plant body by performing a salt tolerance imparting treatment in which at least a part of the root of the plant body is contacted with a salt tolerance imparting agent once or twice in the middle of the cultivation process.
- the salt tolerance imparting treatment is a treatment of immersing at least a part of the roots of the plant body in a treatment solution containing a salt tolerance imparting agent and having a sodium chloride concentration of 1% by mass or more.
- the hydroponic cultivation method for plants in a high salt environment [3] The hydroponic cultivation method of a plant in the high salt environment according to [2], wherein at least a part of the root of the plant body is immersed in the treatment solution for 1 hour or more.
- the salt tolerance imparting agent is a microorganism that imparts salt tolerance to a plant body by adhering to a root, The method for hydroponically cultivating a plant in a high salt environment according to any one of [1] to [4] above, wherein the concentration of the microorganism in the treatment solution is 10 3 CFU / mL or more.
- the salt tolerance imparting treatment A water amount adjusting step for adjusting the amount of the cultivation solution contained in the cultivation tank to be less than the cultivation step; After the water amount adjustment step, a mixing step of mixing the salt tolerance imparting agent into the cultivation solution in the cultivation tank, After the mixing step, the plant is cultivated for 1 hour or more, and the salt tolerance imparting agent is brought into contact with the root of the plant, and The method for hydroponically cultivating a plant in a high salt environment according to the above [7].
- the salt tolerance imparting treatment A transfer step of floating the float on the water surface of the processing solution stored in the processing tank, with the cultivation pot storing the plant body embedded in a through-hole, After the transfer step, the plant is cultivated for 1 hour or more, and the salt tolerance imparting agent is brought into contact with the root of the plant, and The method for hydroponically cultivating a plant in a high salt environment according to the above [7].
- a plant body having low salt tolerance is originally used for cultivation with a sodium chloride concentration of 1% by mass or more using a drug or microorganism having an effect of imparting salt tolerance. Hydroponic cultivation can be performed stably for a long time with the solution.
- the hydroponic cultivation method of a plant in a high salt environment according to the present invention is a plant having low salt tolerance, and a salt tolerance imparting agent.
- salt resistance is imparted by treatment with, and the cultivation is carried out in an environment with a very high salt concentration where the sodium chloride concentration is 1% by mass or more.
- the effect of the salt tolerance imparting agent that increases the salt tolerance of the plant body is not permanent. For this reason, in order to grow a plant for a long period of time in a high salt concentration environment, the treatment with a salt tolerance-imparting agent is not only performed once, but also after acquiring salt tolerance during the cultivation period.
- the plant body has a cultivation process of hydroponically cultivating the plant body with a cultivation solution having a sodium chloride concentration of 1% by mass or more, and once or twice during the cultivation process.
- the salt tolerance of the plant body is maintained by performing a salt tolerance imparting treatment in which at least a part of the root of the plant body is contacted with a salt tolerance imparting agent. Since salt tolerance of a plant body can be maintained for a long period of time by performing salt tolerance imparting treatment in the middle of the cultivation process, the hydroponic cultivation method according to the present invention, for example, in the case of crops, a high salt environment until harvesting. Under cultivation can be continued.
- the concentration of sodium chloride in the cultivation solution in the cultivation process can be 1% by mass or more, and can be appropriately adjusted according to the salt tolerance of the plant body to be cultivated.
- the cultivation solution used in the present invention may have a sodium chloride concentration of 1 to 4% by mass, 1.5 to 3.8% by mass, or 2 to 3.5% by mass.
- the cultivation solution used in the present invention may contain magnesium chloride in addition to sodium chloride, may contain 0.5% by mass or less of magnesium chloride, and contains 0.1 to 0.5% by mass of chloride. Magnesium can be contained.
- the cultivation solution used in the present invention preferably contains various nutritional components necessary for the growth of plants in addition to sodium chloride and magnesium chloride.
- the said nutrient component can be suitably adjusted according to the kind of plant body to grow.
- elements necessary for the growth of plants such as nitrogen, phosphorus, potassium, calcium, magnesium, sulfur, iron, manganese, copper, molybdenum and boron are contained as salts.
- elements such as aluminum and silicon may be contained as salts.
- a solution for cultivation used in the present invention for example, a solution obtained by adding insufficient salts such as sodium chloride to a commercially available liquid fertilizer or a commercially available concentrated liquid fertilizer is replaced by water with seawater. A diluted solution can be used. A solution obtained by appropriately adding deficient salts such as phosphorus to seawater can also be used.
- hydroponics in the cultivation process can be performed by a general hydroponics method except that the sodium chloride concentration of the cultivation solution is 1% by mass or more.
- the cultivation process may be performed by a submerged hydroponics method in which a relatively large amount of cultivation solution is accumulated in a cultivation tank, or by a thin film hydroponics method in which the culture solution is allowed to flow down little by little on a flat surface having a gentle slope. You may go.
- the method for exchanging the cultivation solution in the cultivation tank may be a circulation type that circulates and is used, and is drained as it is after being used for a certain period in the cultivation tank. It may be non-circular.
- the circulation type after the cultivation solution is prepared in the cultivation solution preparation tank, it is put into the cultivation tank by a pump or the like, and is collected again from the cultivation tank to the cultivation solution preparation tank. Prepared.
- the submerged hydroponic method has, for example, a cultivation tank for accommodating a cultivation solution, a cultivation pot for accommodating a plant body, and one or more through holes for fitting the cultivation pot, and the cultivation solution It can carry out using the hydroponic cultivation apparatus provided with the float which floats on the water surface.
- the pot for cultivation may be detachably fitted in the through hole of the float, may be fixed so as not to be detached from the through hole of the float, or even if the float and the pot for cultivation are integrally molded Good.
- the cultivation tank may be installed indoors or may be installed outdoors.
- the cultivation tank has a water supply hole for injecting the cultivation solution and a drainage hole for draining the cultivation solution.
- the cultivation tank may include both a water supply hole and a drainage hole, or may include a water supply / drainage hole that performs both water supply and drainage. Supply and drainage of the cultivation solution to the cultivation tank is controlled by a pump and a valve.
- a pot for cultivation is provided with openings on at least the upper and lower surfaces, and is a container that can hold a support carrier, and generally a resin material such as polyethylene, polypropylene, or polyvinylidene chloride is used. .
- the plant body is supported by the porous carrier in the cultivation pot so that the stem and leaves extend above the supporting carrier and the roots extend below the supporting carrier.
- the supporting carrier may be porous so long as the roots of the plant body can be penetrated while being held in the cultivation pot.
- the supporting carrier may be a gel material or a fibrous material. It may be a granular or gravel material.
- gel substance examples include polymer polysaccharides such as agar, agarose, gellan gum, alginic acid, and water-absorbing resins such as acrylic resins.
- fibrous material examples include non-woven cloth, cotton, paper, rock wool, and glass wool.
- granular or gravel materials include wood chips, bark, pumice, vermiculite, sand, and the like.
- the float is formed of a material that floats on the surface of the water for cultivation in a state where the cultivation pot in a state where the plant body is cultivated is fitted in the through hole.
- the material include expandable resins such as expanded polystyrene and expanded polypropylene.
- the number of floats floating in the cultivation tank may be one, or two or more.
- a float When the cultivation tank is installed outdoors, in order to suppress transpiration from the water surface of the cultivation solution, it is preferable to install a float so as to cover most of the water surface of the cultivation solution.
- the hydroponic cultivation apparatus to be used preferably includes an oxygen supply means for keeping the dissolved oxygen amount of the cultivation solution above a certain amount.
- the oxygen supply means include an air pump and an air soccer.
- the pH suitable for hydroponics varies depending on the type of plant, it is generally about 5.5 to 6.5. However, as the cultivation period becomes longer, the pH of the cultivation solution tends to increase. is there. For this reason, in order to perform hydroponics stably for a long period of time, the hydroponics apparatus to be used measures the pH of the solution for cultivation over time and adjusts the pH within a predetermined range as necessary. It is preferable that a pH control means for administering an acid substance is provided. Examples of the acid substance used for pH adjustment include hydrochloric acid, sulfuric acid, nitric acid and the like.
- the salt tolerance imparting treatment includes at least a part of the root of the plant body in a treatment solution containing a salt tolerance imparting agent and having a sodium chloride concentration of 1% by mass or more. It can be performed by dipping.
- the solution for treatment may be a solution in which a salt tolerance imparting agent is mixed with the solution for cultivation, or may be a solution having a different salt composition from the solution for cultivation.
- the salt tolerance-imparting agent used in the present invention may be a drug, a microorganism, or a culture supernatant of a microorganism.
- the drug include pyrroloquinoline quinone (see Patent Document 1) and strigolactone.
- the microorganism include Paenibacillus fuchinensis (see Patent Document 2).
- the salt tolerance-imparting agent may be composed of one kind of microorganism or a mixture of two or more kinds of microorganisms.
- the concentration of the salt tolerance imparting agent in the treatment solution is appropriately adjusted in consideration of the type of salt tolerance imparting agent, the type of plant body, the growth stage, and the like.
- concentration of the salt tolerance-imparting agent in the treatment solution is too low, the salt tolerance-imparting agent has less chance of contacting the plant roots in the treatment solution, and the salt tolerance-imparting effect may be insufficient. is there.
- concentration of the salt tolerance-imparting agent in the treatment solution for obtaining a sufficient salt tolerance-imparting effect can be determined experimentally. For example, when the salt tolerance imparting agent is a microorganism, a sufficient salt tolerance imparting effect can be obtained by setting the concentration of the microorganism in the treatment solution to 10 3 CFU / mL or more.
- 1 time of salt tolerance imparting treatment time that is, the time for immersing at least a part of the root of the plant body in the treatment solution is appropriately adjusted depending on the kind of plant body and the kind of salt tolerance imparting agent used.
- the salt tolerance imparting treatment time is preferably 1 hour or longer, more preferably 18 hours or longer, further preferably 1 day or longer, and further preferably 1 to 7 days.
- the salt tolerance imparting treatment may be performed while the plant body is installed in the cultivation tank, or the plant body in the cultivation tank may be transferred to the treatment tank containing the treatment solution.
- the salt tolerance imparting agent may be directly injected into the cultivation solution in the cultivation tank, and is separated in advance after draining the cultivation solution in the cultivation tank.
- the processing solution prepared in the tank may be fed into the cultivation tank.
- the salt tolerance-imparting agent is injected into the cultivating solution in the form of additional fertilization, a concentration gradient of the salt tolerance-imparting agent is generated in the cultivation solution, and a sufficient salt tolerance-imparting effect may not be obtained. is there.
- the treatment solution is preferably brought into contact with the roots of the plant under the condition that the amount of water supply / drainage is reduced or the water supply / drainage treatment is not performed.
- the amount of water supply / drainage is small or when water supply / drainage is not performed, stagnation occurs in the cultivation tank, which may adversely affect the plant itself. Therefore, it is preferable to appropriately stir the processing solution by bubbling with an air pump.
- the plant body When the salt tolerance imparting treatment is performed in the processing tank, the plant body is removed from the float of the cultivation tank, and the float is floated on the surface of the processing solution contained in the processing tank.
- the float in which the cultivation pot is embedded may be floated on the water surface of the treatment solution in the treatment tank from the cultivation tank.
- the moving means for moving the cultivation pot or float from the cultivation tank to the treatment tank is not particularly limited, and can be performed by, for example, a movement means using a water flow or movement on a conveyor.
- the processing solution contained in the processing tank is preferably at least 5 mL.
- the cultivation tank For the necessary treatment by mixing a salt tolerance-imparting agent in the solution for cultivation (mixing process), cultivating the plant body for 1 hour or more, and bringing the salt-resistance imparting agent into contact with the root of the plant body (treatment process)
- the amount of solution can be reduced.
- Water quantity adjustment can be achieved by stopping water supply to the cultivation tank and promoting drainage.
- the cultivation solution can be resumed by draining the treatment solution and then supplying the cultivation solution to the same water height as in normal cultivation, and then performing the feeding and draining under normal feeding and draining conditions.
- the cultivation solution is usually supplied without draining the treatment solution.
- Water supply / drainage may be started under the water supply / drainage conditions.
- the salt tolerance imparting treatment needs to be performed before the plant loses the salt tolerance acquired by the previous salt tolerance imparting treatment.
- the timing and number of salt tolerance imparting treatments and the interval between salt tolerance imparting treatments are experimentally determined in consideration of the type of plant body, the type of salt tolerance imparting agent to be used, the sodium chloride concentration of the cultivation solution, etc. be able to.
- a plant can be cultivated stably in a high-salt environment for a long period of time by repeatedly applying salt tolerance treatment at a rate of about once every 1 to 2 months.
- the salt tolerance-imparting agent is a microorganism that imparts salt tolerance to the plant body by adhering to the root
- Monitoring the amount of microorganisms is, for example, growing multiple plants at the same time in the same environment, extracting one to several of them from the pot for cultivation, and quantifying the amount of microorganisms attached to the roots. Can be implemented. Quantification of the amount of microorganisms is usually performed by, for example, an agar plate surface smearing method in which a sample obtained by appropriately diluting microorganisms collected from roots in a plate medium is smeared evenly with a congeal rod and the number of colonies formed by culturing is counted. It can be measured by the method.
- hydroponic cultivation can be stably performed for a long time with a cultivation solution having a sodium chloride concentration of 1% by mass or more.
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Abstract
Description
[1] 植物体を、塩化ナトリウム濃度が1質量%以上である栽培用溶液で水耕栽培する栽培工程を有し、
前記栽培工程の途中で1回又は2回以上、前記植物体の根の少なくとも一部に耐塩付与剤を接触させる耐塩性付与処理を行うことによって前記植物体の耐塩性を維持する、高塩環境下における植物の水耕栽培方法。
[2] 前記耐塩性付与処理が、耐塩性付与剤を含有し、かつ塩化ナトリウム濃度が1質量%以上である処理用溶液に、前記植物体の根の少なくとも一部を浸漬させる処理である、前記[1]の高塩環境下における植物の水耕栽培方法。
[3] 前記植物体の根の少なくとも一部を前記処理用溶液に、1時間以上浸漬させる、前記[2]の高塩環境下における植物の水耕栽培方法。
[4] 前記処理用溶液が、さらに、0.5質量%以下の塩化マグネシウムを含有する、前記[2]又は[3]の高塩環境下における植物の水耕栽培方法。
[5] 前記耐塩付与剤が、1種類又は2種類以上の微生物である、前記[1]~[4]のいずれかの高塩環境下における植物の水耕栽培方法。
[6] 前記耐塩付与剤が、根に付着することによって植物体に耐塩性を付与する微生物であり、
前記処理用溶液における前記微生物の濃度が103CFU/mL以上である、前記[1]~[4]のいずれかの高塩環境下における植物の水耕栽培方法。
[7] 栽培用溶液を収容する栽培用槽と、
植物体を収容する栽培用ポットと、
栽培用ポットをはめ込む貫通孔が1又は2以上あり、かつ栽培用溶液の水面上に浮かべるフロートと、を備える水耕栽培装置を用いて行う、前記[1]~[6]のいずれかの高塩環境下における植物の水耕栽培方法。
[8] 前記耐塩性付与処理が、
前記栽培用槽に収容する栽培用溶液の量を、前記栽培工程よりも少なくなるように調節する水量調節工程と、
前記水量調節工程後、前記栽培用槽内の栽培用溶液に前記耐塩性付与剤を混入させる混入工程と、
前記混入工程後、1時間以上植物体を栽培し、前記耐塩性付与剤を植物体の根に接触させる処理工程と、
を有する、前記[7]の高塩環境下における植物の水耕栽培方法。
[9] 前記耐塩性付与処理が、
前記フロートを、前記植物体を収容した栽培用ポットが貫通孔に埋め込まれた状態で、処理用槽に収容された前記処理用溶液の水面上に浮かべる移設工程と、
前記移設工程後、1時間以上植物体を栽培し、前記耐塩性付与剤を植物体の根に接触させる処理工程と、
を有する、前記[7]の高塩環境下における植物の水耕栽培方法。
Claims (9)
- 植物体を、塩化ナトリウム濃度が1質量%以上である栽培用溶液で水耕栽培する栽培工程を有し、
前記栽培工程の途中で1回又は2回以上、前記植物体の根の少なくとも一部に耐塩付与剤を接触させる耐塩性付与処理を行うことによって前記植物体の耐塩性を維持する、高塩環境下における植物の水耕栽培方法。 - 前記耐塩性付与処理が、耐塩性付与剤を含有し、かつ塩化ナトリウム濃度が1質量%以上である処理用溶液に、前記植物体の根の少なくとも一部を浸漬させる処理である、請求項1に記載の高塩環境下における植物の水耕栽培方法。
- 前記植物体の根の少なくとも一部を前記処理用溶液に、1時間以上浸漬させる、請求項2に記載の高塩環境下における植物の水耕栽培方法。
- 前記処理用溶液が、さらに、0.5質量%以下の塩化マグネシウムを含有する、請求項2又は3に記載の高塩環境下における植物の水耕栽培方法。
- 前記耐塩付与剤が、1種類又は2種類以上の微生物である、請求項1~4のいずれか一項に記載の高塩環境下における植物の水耕栽培方法。
- 前記耐塩付与剤が、根に付着することによって植物体に耐塩性を付与する微生物であり、
前記処理用溶液における前記微生物の濃度が103CFU/mL以上である、請求項1~4のいずれか一項に記載の高塩環境下における植物の水耕栽培方法。 - 栽培用溶液を収容する栽培用槽と、
植物体を収容する栽培用ポットと、
栽培用ポットをはめ込む貫通孔が1又は2以上あり、かつ栽培用溶液の水面上に浮かべるフロートと、を備える水耕栽培装置を用いて行う、請求項1~6のいずれか一項に記載の高塩環境下における植物の水耕栽培方法。 - 前記耐塩性付与処理が、
前記栽培用槽に収容する栽培用溶液の量を、前記栽培工程よりも少なくなるように調節する水量調節工程と、
前記水量調節工程後、前記栽培用槽内の栽培用溶液に前記耐塩性付与剤を混入させる混入工程と、
前記混入工程後、1時間以上植物体を栽培し、前記耐塩性付与剤を植物体の根に接触させる処理工程と、
を有する、請求項7に記載の高塩環境下における植物の水耕栽培方法。 - 前記耐塩性付与処理が、
前記フロートを、前記植物体を収容した栽培用ポットが貫通孔に埋め込まれた状態で、処理用槽に収容された前記処理用溶液の水面上に浮かべる移設工程と、
前記移設工程後、1時間以上植物体を栽培し、前記耐塩性付与剤を植物体の根に接触させる処理工程と、
を有する、請求項7に記載の高塩環境下における植物の水耕栽培方法。
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CN110199854A (zh) * | 2019-07-16 | 2019-09-06 | 上海市农业科学院 | 一种幼苗期大麦耐盐性的鉴定方法 |
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