JP5236981B2 - Hydroponics method - Google Patents

Hydroponics method Download PDF

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JP5236981B2
JP5236981B2 JP2008104632A JP2008104632A JP5236981B2 JP 5236981 B2 JP5236981 B2 JP 5236981B2 JP 2008104632 A JP2008104632 A JP 2008104632A JP 2008104632 A JP2008104632 A JP 2008104632A JP 5236981 B2 JP5236981 B2 JP 5236981B2
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potassium
sodium
culture solution
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JP2009254246A (en
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昭博 野瀬
栄 東江
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Saga University NUC
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本発明は、アイスプラントの水耕栽培方法に関して、特に適度な塩味を維持しつつアイスプラント中のカリウム含量を高め、アイスプラントの生長を促進させて葉の厚みと食感を向上させ、さらに塩分摂取過多の人にもカリウムの血圧降下作用により塩味でも安心して食用されるアイスプラントの水耕栽培方法を提供する。   The present invention relates to a hydroponics method for an ice plant, particularly increasing the potassium content in the ice plant while maintaining an appropriate salty taste, promoting the growth of the ice plant to improve the leaf thickness and texture, Provided is a hydroponic cultivation method for an ice plant that can be consumed safely even in salty taste due to the blood pressure lowering effect of potassium even for those who are overdose.

塩化ナトリウム（ＮａＣｌ）をはじめとするミネラル分を根から吸収して地上部に蓄積する吸塩植物の一種であるアイスプラント（学名：Ｍｅｓｅｍｂｒｙａｎｔｈｅｍｕｍ ｃｒｙｓｔａｌｌｉｎｕｍ）は、吸収されたミネラル分を茎・葉に水滴状に点在するブラッター細胞に含む特徴がある。アイスプラントは、葉だけでなく茎も食用することができ、食用時にはほのかな塩味と独特の歯応えを有し、サラダから炒め物まで応用範囲の広い野菜であり、今後のさらなる普及が期待されている。   An ice plant (scientific name: Mesembrythemum crystallinum), which is a kind of salt-absorbing plant that absorbs minerals such as sodium chloride (NaCl) from the roots and accumulates them in the ground, is a drop of water on the stems and leaves. There is a feature included in blutter cells scattered in the shape. The ice plant can eat not only leaves but also stems, has a subtle salty taste and a unique crunch when eaten, and has a wide range of applications from salads to fried foods. Yes.

アイスプラントの栽培方法としては、土耕栽培ではエグ味成分であるシュウ酸含量が増加して生食用に適さないために、水耕栽培が一般的である。栽培者は、葉の厚みと食感を向上させるために、栽培中にミネラル分としての塩分を培養液としてアイスプラントに与えている。   As the cultivation method of the ice plant, hydroponics is common because the oxalic acid content, which is a taste component, increases in soil cultivation and is not suitable for raw consumption. Growers give salt as a mineral solution to an ice plant during cultivation in order to improve leaf thickness and texture.

従来の水耕栽培方法には、二十日大根、サラダ菜等の水耕植物又は陸生植物を生育対象とし、ミネラル組成物において、少なくともナトリウム・カルシウム・マグネシウム・カリウムの４種類のミネラルを含み、ナトリウムとそれ以外のミネラル組成物すなわちカリウム・カルシウム・マグネシウムの総和との比率が、重量比でナトリウムを「１」にして１対５０から１対３の範囲であることを特徴とし、かつ、ナトリウム以外のミネラル組成物すなわちカリウム・カルシウム・マグネシウムのうち最小組成量（重量）の成分が他の２成分のいずれに対しても重量比で１／６（最小組成量（重量）の成分を１とする）から１１の範囲であることを特徴とするミネラル組成物Ａを、ナトリウム濃度にして０．０００５％〜０．５％の範囲で水に混合し、該混合物を水耕植物や陸生植物の肥料ないしは栄養剤として用いるものがある。（特許文献参照）
特開平１１―１５５３７５号公報 The conventional hydroponics method is intended to grow hydroponic plants such as radish and salad vegetables or terrestrial plants, and contains at least four minerals of sodium, calcium, magnesium, and potassium in the mineral composition, sodium And the other mineral composition, that is, the ratio of the sum of potassium, calcium, and magnesium is 1 to 50 to 1: 3 with sodium being "1" by weight, and other than sodium Mineral composition of potassium, calcium and magnesium, the minimum composition (weight) component is 1/6 in weight ratio to all other two components (minimum composition (weight) component is 1 ) To 11 in the range of 0.0005% to 0.5% of the mineral composition A having a sodium concentration. Combined, it is to use the mixture as a fertilizer or nutrient in hydroponics plants and terrestrial plants. (See patent literature)
JP 11-155375 A

しかし、従来の水耕栽培方法は、培養液中のナトリウムを吸収して塩分の蓄積を主目的に栽培されるアイスプラント栽培に仮に適用される場合には、ナトリウム濃度が極めて薄いために、適度な塩味を感じることができないという課題を有する。また、この従来の水耕栽培方法により適度な塩味を感じることができるアイスプラントを育成したとしても、単に塩分濃度を高くしたアイスプラントでは塩分過多となり、前記健康維持効果を十分に得られない可能性があるという課題を有する。   However, when the conventional hydroponics method is temporarily applied to ice plant cultivation that absorbs sodium in the culture and accumulates salt, the sodium concentration is extremely low. It has a problem that it cannot feel a good salty taste. In addition, even if an ice plant that can feel an appropriate salty taste is cultivated by this conventional hydroponics method, an ice plant that simply has a high salinity concentration is excessively salty, and the health maintenance effect may not be sufficiently obtained. There is a problem that there is.

本発明は前記課題を解消するためになされたもので、アイスプラントの適度な塩味を維持しつつアイスプラント中のカリウム含量を高めると共に、特にアイスプラントの生長を促進させ、また葉の厚みと食感を向上させ、さらに塩分摂取過多の人にもカリウムの血圧降下作用により塩味でも安心して食用されるアイスプラントの水耕栽培方法を提供する。   The present invention has been made to solve the above-mentioned problems, and while increasing the potassium content in the ice plant while maintaining an appropriate salty taste of the ice plant, the growth of the ice plant is promoted, and the thickness and food of the leaf are further enhanced. It provides a hydroponic cultivation method for an ice plant that improves the feeling and is safe to eat even in salty tastes due to the blood pressure lowering action of potassium even for those who have excessive salt intake.

本発明に係る水耕栽培方法は、吸塩植物を水耕栽培する水耕栽培方法において、カリウム及びナトリウムのモル比率がカリウム１に対してナトリウム０．１ないし３であり、カリウム及びナトリウムの総モル濃度が１５ｍｍｏｌ／ｌないし２００ｍｍｏｌ／ｌであるカリウム及びナトリウムからなる混合物を吸塩植物の培養液として用いるものである。このように本発明によれば、カリウム及びナトリウムのモル比率（Ｎａ／Ｋ）が０．１から３の範囲であり、カリウム及びナトリウムの総モル濃度が１５ｍｍｏｌ／ｌから２００ｍｍｏｌ／ｌの範囲であるカリウム及びナトリウムからなる混合物を吸塩植物の培養液として用いることから、後述の実験データから、当該培養液の使用によりアイスプラントの生育を大幅に促進し、さらにナトリウムに対するカリウムの含量比を増大させることとなり、ほのかな塩味を維持しつつカリウム濃度を高めて生長する吸塩植物を栽培することができる。   The hydroponics method according to the present invention is a hydroponics method for hydroponically cultivating salt-absorbing plants, wherein the molar ratio of potassium and sodium is 0.1 to 3 with respect to potassium 1, and the total amount of potassium and sodium A mixture of potassium and sodium having a molar concentration of 15 mmol / l to 200 mmol / l is used as a culture solution for salt-absorbing plants. Thus, according to the present invention, the molar ratio of potassium and sodium (Na / K) is in the range of 0.1 to 3, and the total molar concentration of potassium and sodium is in the range of 15 mmol / l to 200 mmol / l. Since a mixture consisting of potassium and sodium is used as a culture solution for salt-absorbing plants, the growth of ice plants is greatly promoted by using the culture solution, and the content ratio of potassium to sodium is further increased. This makes it possible to grow a salt-absorbing plant that grows by increasing the potassium concentration while maintaining a faint salty taste.

また、本発明に係る水耕栽培方法は必要に応じて、カリウムとナトリウムのモル比率が好ましくはカリウム１に対してナトリウム２であり、カリウム及びナトリウムの総モル濃度が好ましくは２５ｍｍｏｌ／ｌであるカリウム及びナトリウムからなる混合物を吸塩植物の培養液として用いるものである。このように本発明によれば、カリウムとナトリウムのモル比率（Ｎａ／Ｋ）が好ましくは２であり、カリウム及びナトリウムの総モル濃度が好ましくは２５ｍｍｏｌ／ｌであるカリウム及びナトリウムからなる混合物を吸塩植物の培養液として用いるから，後述の実験データから、当該培養液の使用によりアイスプラントの生育を最も大幅に促進すると共にナトリウムに対するカリウムの含量比を増大させることとなり、栄養価の高い吸塩植物を栽培することができる。   Further, in the hydroponics method according to the present invention, if necessary, the molar ratio of potassium and sodium is preferably sodium 2 with respect to potassium 1, and the total molar concentration of potassium and sodium is preferably 25 mmol / l. A mixture of potassium and sodium is used as a culture solution for salt-absorbing plants. Thus, according to the invention, a mixture of potassium and sodium having a molar ratio of potassium to sodium (Na / K) of preferably 2 and a total molar concentration of potassium and sodium of preferably 25 mmol / l is absorbed. Since it is used as a salt plant culture solution, from the experimental data described below, the use of the culture solution most greatly promotes the growth of the ice plant and increases the content ratio of potassium to sodium. Plants can be cultivated.

また、本発明に係る水耕栽培方法は必要に応じて、ナトリウムのモル濃度が５０ｍｍｏｌ／ｌないし１００ｍｍｏｌ／ｌである前記培養液を栽培コンテナーに貯留し、前記栽培コンテナーに貯留された前記培養液の上面に接して籾殻くん炭を敷設し、吸塩植物を前記培養液に一部浸潤して前記籾殻くん炭上にて栽培するものである。このように本発明によれば、ナトリウムのモル濃度が５０ｍｍｏｌ／ｌから１００ｍｍｏｌ／ｌの範囲の前記培養液を栽培コンテナーに貯留し、前記栽培コンテナーに貯留された前記培養液の上面に接して籾殻くん炭を敷設し、吸塩植物を前記培養液に一部浸潤して前記籾殻くん炭上にて栽培することから、当該ナトリウム濃度により吸塩植物の食用時に適度な塩味が得られ、さらに吸塩植物の生育促進効果も得られる。また、水耕栽培及び固形培地耕を併用することとなり、水耕栽培時に生じるピシウム菌等による病害の発生を籾殻くん炭により抑制し、さらに土耕栽培時に生じるエグ味成分を水耕栽培により低減することができる。   In addition, the hydroponics method according to the present invention stores, as necessary, the culture solution having a sodium molar concentration of 50 mmol / l to 100 mmol / l in a cultivation container, and the culture solution stored in the cultivation container. The rice husk charcoal is laid in contact with the upper surface of the rice bran, and the salt-absorbing plant is partially infiltrated into the culture solution and cultivated on the rice husk charcoal. Thus, according to the present invention, the culture solution having a sodium molar concentration in the range of 50 mmol / l to 100 mmol / l is stored in a cultivation container, and is in contact with the upper surface of the culture solution stored in the cultivation container. Since the charcoal is laid and the salt-absorbing plant is partially infiltrated into the culture solution and cultivated on the rice husk charcoal, the sodium concentration provides an appropriate salty taste when the salt-absorbing plant is edible, and further absorbs the salt. The effect of promoting the growth of salt plants is also obtained. Also, hydroponics and solid culture will be used in combination, and the occurrence of diseases caused by Psium bacteria during hydroponics is suppressed by rice husk charcoal, and further the taste components produced during soil cultivation are reduced by hydroponics. can do.

また、本発明に係る水耕栽培方法は必要に応じて、前記吸塩植物が、アイスプラントであるものである。このように本発明によれば、前記吸塩植物が、アイスプラントであるから、培養液からナトリウムとカリウムをバランスよく吸収することとなり、ブラッター細胞を増大させて葉の厚み及び食感が格段に向上し、ナトリウムによる適度な塩味を維持しつつカリウムによる健康維持効果を得ることができる。   Moreover, the hydroponic cultivation method which concerns on this invention is that the said salt absorption plant is an ice plant as needed. Thus, according to the present invention, since the salt-absorbing plant is an ice plant, it absorbs sodium and potassium in a well-balanced manner from the culture solution, and the thickness and texture of the leaf are markedly increased by increasing blatter cells. The health maintenance effect by potassium can be acquired, improving and maintaining the moderate salty taste by sodium.

（本発明の実施形態）
以下に本発明に係る実施の形態について説明する。
本発明に係る培養液の原料としては、ナトリウム成分として食塩（ＮａＣｌ）を用い、カリウム成分として塩化カリウム（ＫＣｌ）を用いることができる。また、この培養液の原料は、食塩及び塩化カリウム以外にも、炭酸水素ナトリウム（ＮａＨＣＯ3）や硫酸カリウム（Ｋ2ＳＯ4）等の種々のカリウム化合物及びナトリウム化合物を用いることもできる。 (Embodiment of the present invention)
Embodiments according to the present invention will be described below.
As a raw material of the culture solution according to the present invention, sodium chloride (NaCl) can be used as a sodium component, and potassium chloride (KCl) can be used as a potassium component. In addition to sodium chloride and potassium chloride, various potassium compounds such as sodium hydrogen carbonate (NaHCO 3 ) and potassium sulfate (K 2 SO 4 ) and sodium compounds can also be used as the raw material for the culture solution.

この原料を用いて、カリウム及びナトリウムのモル比率（Ｎａ／Ｋ）が０．１から３の範囲であり、カリウム及びナトリウムの総モル濃度が１５ｍｍｏｌ／ｌから２００ｍｍｏｌ／ｌの範囲であるカリウム及びナトリウムを含む混合物を培養液としてアイスプラントを栽培する。   Using this raw material, potassium and sodium having a molar ratio of potassium and sodium (Na / K) in the range of 0.1 to 3 and a total molar concentration of potassium and sodium in the range of 15 mmol / l to 200 mmol / l An ice plant is cultivated using a mixture containing

また、好ましくはカリウムとナトリウムのモル比率（Ｎａ／Ｋ）が２であり、カリウム及びナトリウムの総モル濃度が好ましくは２５ｍｍｏｌ／ｌであるカリウム及びナトリウムを含む混合物を培養液としてアイスプラントを栽培する。
以下、上記に記載した最適な培養液を求めるための実験方法に関して説明する。 Further, an ice plant is cultivated using a mixture containing potassium and sodium, preferably having a molar ratio of potassium and sodium (Na / K) of 2 and a total molar concentration of potassium and sodium of preferably 25 mmol / l. .
Hereinafter, an experimental method for obtaining the optimum culture solution described above will be described.

（最適なモル比率の選定）
ナトリウム及びカリウムの総モル濃度を一定とする条件下で、ナトリウム及びカリウムのモル比率の異なる試料培養液を複数用意して、試料培養液ごとに処理区を定義してアイスプラントを水耕栽培する。さらに、ナトリウムを含まずにカリウムを含む培養液を用いて対照区としてアイスプラントを水耕栽培する。 (Selection of optimal molar ratio)
Under conditions where the total molar concentration of sodium and potassium is constant, prepare multiple sample culture solutions with different molar ratios of sodium and potassium, define treatment zones for each sample culture solution, and hydroponic the ice plant . Furthermore, the ice plant is hydroponically cultivated as a control plot using a culture solution containing potassium without containing sodium.

この水耕栽培後、生長したアイスプラントに対して食用となる地上部の生重を計測する。最適な試料培養液は、前記計測の結果に基づいて、対照区の生育結果と同等もしくは同等以上に生育した処理区の試料培養液が選定される。   After this hydroponics, the fresh weight of the above-ground part which becomes edible with respect to the grown ice plant is measured. Based on the result of the measurement, the optimal sample culture solution is selected from the treatment group that has grown to be equal to or higher than the growth result of the control group.

（最適なモル濃度の選定）
次に、カリウム及びナトリウムのモル比率をこの選定された試料培養液と同一に固定し、カリウム及びナトリウムの総モル濃度の異なる試料培養液を複数用意し、試料培養液ごとに処理区を定義してアイスプラントを水耕栽培する。
この水耕栽培後、生長したアイスプラントの食用となる地上部の生重、ナトリウム含量及びカリウム含量を計測する。最適な試料培養液は、前記計測の結果に基づいて、対照区の生育結果と同等以上に生育し、ナトリウム含量に対するカリウム含量の比率の高い処理区の試料培養液が選定される。 (Selection of optimal molar concentration)
Next, fix the molar ratio of potassium and sodium to be the same as the selected sample culture solution, prepare multiple sample culture solutions with different total molar concentrations of potassium and sodium, and define treatment zones for each sample culture solution. Then hydroponic the ice plant.
After this hydroponics, the fresh weight, sodium content and potassium content of the above-ground part that is edible for the grown ice plant are measured. Based on the result of the measurement, the optimum sample culture solution grows to be equal to or higher than the growth result of the control group, and the sample culture solution of the treatment group having a high ratio of potassium content to sodium content is selected.

以下、上記実験方法に基づいて実施した実験結果に関して説明する。
実験にあたり、水耕栽培の方式は、根圏に十分な量の液肥を常に流すＤｅｅｐ Ｆｌｏｗ Ｔｅｃｈｎｉｑｕｅ（湛液型循環式水耕法：以下、ＤＦＴ方式という）を採用した。このＤＦＴ方式は、液肥の流動により十分な酸素を根部に供給して養分吸収を促進し、さらに液肥の温度及び濃度を含む根圏環境も安定化し、栽培環境を一定に整えるという利点がある。また、５９穴の発砲スチロールパネル（６１ｃｍ×６２ｃｍ）の１２穴に千鳥定植（栽植密度３１．７株／ｍ2）を行った。 Hereinafter, the experimental results carried out based on the above experimental method will be described.
In the experiment, a deep flow technique (liquid-type circulation hydroponic method: hereinafter referred to as DFT method) was adopted as a method of hydroponics, in which a sufficient amount of liquid fertilizer was constantly passed through the rhizosphere. This DFT system has an advantage that the oxygen is supplied to the root portion by the flow of liquid fertilizer to promote nutrient absorption, the rhizosphere environment including the temperature and concentration of the liquid fertilizer is also stabilized, and the cultivation environment is made constant. Further, staggered planting (planting density 31.7 strains / m 2 ) was performed in 12 holes of a 59-hole foamed polystyrene panel (61 cm × 62 cm).

培養液に関して、図１に示すように、ナトリウム及びカリウムの総モル濃度を海水の塩化ナトリウム濃度と同程度の４００ｍｍｏｌ／ｌとする条件下で、ナトリウム及びカリウムのモル比率（Ｎａ／Ｋ）が０．１０、２．０、３．０、１０、３０となる５つの試料培養液を用意した。アイスプラントの水耕栽培は、この各々の試料培養液で定義された５つの処理区（処理区番号１、２、３、４、５）により実施した。さらに、ナトリウムを含まずにカリウム４．３ｍｍｏｌ／ｌを含む培養液を用いて対照区（処理区番号１１）としてアイスプラントを水耕栽培した。   With respect to the culture solution, as shown in FIG. 1, the molar ratio of sodium and potassium (Na / K) is 0 under the condition that the total molar concentration of sodium and potassium is 400 mmol / l, which is similar to the sodium chloride concentration in seawater. Five sample culture solutions were prepared to be 10., 2.0, 3.0, 10, 30. Hydroponics of the ice plant was carried out in five treatment zones (treatment zone numbers 1, 2, 3, 4, 5) defined by each sample culture solution. Furthermore, the ice plant was hydroponically cultivated as a control group (treatment section number 11) using a culture solution containing 4.3 mmol / l potassium without containing sodium.

栽培後、各々の処理区のアイスプラントに対して、図２に示すように、食用となる地上部の生重を計測した。この計測結果に基づいて、処理区１〜３は、対照区の生育結果と比較して同等もしくは同等以上に生育した。この結果により、カリウム及びナトリウムのモル比率（Ｎａ／Ｋ）は、０．１〜３の範囲において生長が促進されることが判明した。
さらに、処理区２の場合に、最も高い生重が得られた。この結果により、カリウムとナトリウムの最適なモル比率（Ｎａ／Ｋ）は、２であることが判明した。 After cultivation, as shown in FIG. 2, the raw weight of the edible above-ground part was measured with respect to the ice plant of each processing section. Based on the measurement results, the treatment groups 1 to 3 grew equivalently or more than the growth results of the control group. From this result, it was found that the growth of the molar ratio of potassium and sodium (Na / K) was promoted in the range of 0.1 to 3.
Furthermore, in the case of the treatment section 2, the highest fresh weight was obtained. From this result, it was found that the optimum molar ratio (Na / K) of potassium and sodium was 2.

（最適なモル濃度の選定）
次に、培養液に関して、図３に示すように、カリウムとナトリウムのモル比率（Ｎａ／Ｋ）を２とする条件下で、ナトリウム及びカリウムの総モル濃度（ｍｍｏｌ／ｌ）が１５、２５、１００、２００、６００となる５つの試料培養液を用意した。アイスプラントの水耕栽培は、この各々の試料培養液で定義された５つの処理区（処理区番号６、７、８、９、１０）により実施した。さらに、ナトリウムを含まずにカリウム４．３ｍｍｏｌ／ｌを含む培養液を用いて対照区（処理区番号１１）としてアイスプラントを水耕栽培した。 (Selection of optimal molar concentration)
Next, regarding the culture solution, as shown in FIG. 3, the total molar concentration of sodium and potassium (mmol / l) is 15, 25, under the condition that the molar ratio of potassium to sodium (Na / K) is 2. Five sample culture solutions to be 100, 200, and 600 were prepared. Hydroponics of the ice plant was carried out in five treatment zones (treatment zone numbers 6, 7, 8, 9, 10) defined by each sample culture solution. Furthermore, the ice plant was hydroponically cultivated as a control group (treatment section number 11) using a culture solution containing 4.3 mmol / l potassium without containing sodium.

栽培後、各々の処理区のアイスプラントに対して、図４に示すように、食用となる地上部の生重を計測した。この計測結果より、処理区６〜８の地上部生重が対照区１１より２〜３倍程度それぞれ増加した。この結果により、カリウム及びナトリウムの総モル濃度が１５ｍｍｏｌ／ｌから２００ｍｍｏｌ／ｌの範囲において生長が促進されることが判明した。さらに、ナトリウム及びカリウムの総モル濃度が２５ｍｍｏｌ／ｌの処理区７の場合に最も高い生重が得られた。   After cultivation, as shown in FIG. 4, the raw weight of the edible above-ground part was measured with respect to the ice plant of each processing section. From this measurement result, the above-ground fresh weight of the treatment sections 6 to 8 increased from the control section 11 by about 2 to 3 times. From this result, it was found that the growth was promoted when the total molar concentration of potassium and sodium was in the range of 15 mmol / l to 200 mmol / l. Furthermore, the highest fresh weight was obtained in the case of the treatment section 7 in which the total molar concentration of sodium and potassium was 25 mmol / l.

また、処理区１０の地上部生重が対照区１１の半分程度に減少した。この処理区１０の結果から、ナトリウム及びカリウムの総モル濃度を６００ｍｍｏｌ／ｌまで高めた場合には、ナトリウム及びカリウムの濃度が高過ぎるために生長が抑制されたと考察することができる。   In addition, the above-ground fresh weight of the treatment area 10 was reduced to about half that of the control area 11. From the result of this treatment group 10, it can be considered that when the total molar concentration of sodium and potassium was increased to 600 mmol / l, the growth was suppressed because the concentrations of sodium and potassium were too high.

また、図５に示すように、食用となる葉及び茎ごとにナトリウム含量及びカリウム含量を計測した。この計測結果からも、ナトリウム含量に対するカリウム含量の比率は、処理区７が、対照区１１と比較して葉において１．２倍、茎において２．２倍程度となり、最も高いカリウム含量の比率が得られた。尚、図５における葉（１）及び葉（２）に関して、図６に示すように、この葉（１）は、主茎に着生している葉である主茎着生葉１００を指し、この葉（２）は、側枝２０１に着生している葉である側枝着生葉２００を指す。   Moreover, as shown in FIG. 5, the sodium content and potassium content were measured for every edible leaf and stem. Also from this measurement result, the ratio of the potassium content to the sodium content is about 1.2 times in the leaf 7 and 2.2 times in the stem in the treated group 7 compared to the control group 11, and the ratio of the highest potassium content is Obtained. In addition, regarding the leaf (1) and the leaf (2) in FIG. 5, as shown in FIG. 6, this leaf (1) refers to the main stem settlement leaf 100, which is a leaf that has grown on the main stem. The leaf (2) refers to the side branching leaf 200 that is a leaf that is growing on the side branch 201.

最適な試料培養液は、前記計測の結果に基づいて、対照区の生育結果と同等以上に生育し、ナトリウム含量に対するカリウム含量の比率の高い処理区７の試料培養液を選定することができる。以上の結果より、生育培地のカリウムとナトリウムのモル比率（Ｎａ／Ｋ）を２とし，ナトリウム及びカリウムの総モル濃度を２５ｍｍｏｌ／ｌとした栽培条件が、アイスプラントの生育を大幅に促進し、さらにナトリウム含量に対するカリウム含量の比率をも増大させることが明らかになった。   Based on the result of the measurement, the optimal sample culture solution can be selected as the sample culture solution in the treatment group 7 that grows at the same level or higher as the growth result of the control group and has a high ratio of potassium content to sodium content. From the above results, the cultivation conditions in which the molar ratio of potassium and sodium in the growth medium (Na / K) is 2, and the total molar concentration of sodium and potassium is 25 mmol / l greatly promote the growth of the ice plant, It was also found that the ratio of potassium content to sodium content was increased.

なお、前記実施形態に係る栽培方法は、水耕による栽培のみの構成としたが、図７に記載の水耕栽培及び培地栽培を併用する混合方式とすることもできる。この混合方式は、前記図７に示すように、培養液１を貯留する栽培コンテナー２と、この栽培コンテナー２に貯留された培養液１の上面に接して配設された籾殻くん炭からなる培地層３を備えることができる。   In addition, although the cultivation method according to the embodiment is configured only by cultivation by hydroponics, it can be a mixed method in which the hydroponics and medium cultivation described in FIG. 7 are used in combination. As shown in FIG. 7, this mixing method is a culture medium composed of a cultivation container 2 for storing the culture solution 1 and rice husk charcoal disposed in contact with the upper surface of the culture solution 1 stored in the cultivation container 2. Layer 3 can be provided.

この培養液１は、カリウム及びナトリウムのモル比率（Ｎａ／Ｋ）が０．１から３の範囲であり、ナトリウムのモル濃度が５０ｍｍｏｌ／ｌから１００ｍｍｏｌ／ｌの範囲の混合液を使用することができる。この混合方式において、アイスプラント４は、この培養液１に根部を一部浸潤され、この籾殻くん炭からなる培地層３上にて栽培されることができ、水耕栽培の利点である食用時のエグ味の低減と、培地栽培の利点である病害の低減を共に享受することができる。   As the culture solution 1, a mixed solution in which the molar ratio of potassium and sodium (Na / K) is in the range of 0.1 to 3 and the molar concentration of sodium is in the range of 50 mmol / l to 100 mmol / l can be used. it can. In this mixing method, the ice plant 4 is partly infiltrated into the culture solution 1 and can be cultivated on the medium layer 3 made of rice husk charcoal, which is an advantage of hydroponics. It is possible to enjoy both the reduction of the egg taste and the reduction of diseases, which are the advantages of medium culture.

また、灌水チューブ５を用いて、この培養液１と同成分の灌水液６を灌水孔５１からこの籾殻くん炭からなる培地層３の上面に灌水してもよい。この灌水により、アイスプラント４は、下部からのみならず上部からも培養液１を供給されることから、培養液１に含まれるカリウム及びナトリウムをより効率的に吸収することとなり、このカリウム及びナトリウムの作用により食用時の適度な塩味を一層向上させることができ、生長を一層促進することができる。   Alternatively, the irrigation tube 5 may be used to irrigate the irrigation solution 6 having the same component as the culture solution 1 from the irrigation hole 51 onto the upper surface of the medium layer 3 made of rice husk charcoal. By this irrigation, the ice plant 4 is supplied not only from the lower part but also from the upper part, so that it absorbs potassium and sodium contained in the culture liquid 1 more efficiently. Due to this action, it is possible to further improve the moderate salty taste at the time of consumption, and further promote the growth.

本発明の実施形態に係る水耕栽培方法の最適なモル比率（Ｎａ／Ｋ）選定のための実験処理区の条件一覧表Table of conditions for the experimental treatment area for selecting the optimal molar ratio (Na / K) of the hydroponic cultivation method according to the embodiment of the present invention 本発明の実施形態に係る水耕栽培方法の地上部の生重を示す実験結果図The experimental result figure which shows the raw weight of the above-ground part of the hydroponic cultivation method which concerns on embodiment of this invention 本発明の実施形態に係る水耕栽培方法の最適な総モル濃度選定のための実験処理区の条件一覧表Table of conditions for the experimental treatment zone for selecting the optimum total molar concentration of the hydroponic cultivation method according to the embodiment of the present invention 本発明の実施形態に係る水耕栽培方法の地上部の生重を示す実験結果図The experimental result figure which shows the raw weight of the above-ground part of the hydroponic cultivation method which concerns on embodiment of this invention 本発明の実施形態に係る水耕栽培方法の地上部のナトリウム含量及びカリウム含量を示す実験結果図The experimental result figure which shows the sodium content and potassium content of the above-ground part of the hydroponic cultivation method which concerns on embodiment of this invention 本発明の実施形態に係る水耕栽培方法の主茎着生葉及び側枝着生葉を示す説明図Explanatory drawing which shows the main stem epiphytic leaf and side branch epiphytic leaf of the hydroponic cultivation method which concerns on embodiment of this invention 本発明の実施形態に係る水耕栽培方法の籾殻くん炭を使用する場合の概要図Schematic diagram when using rice husk charcoal of hydroponics method according to an embodiment of the present invention

符号の説明Explanation of symbols

１ 培養液
２ 栽培コンテナー
３ 培地層
４ アイスプラント
５ 灌水チューブ
５１ 灌水孔
６ 灌水液
１００ 主茎着生葉
２００ 側枝着生葉
２０１ 側枝 DESCRIPTION OF SYMBOLS 1 Culture liquid 2 Cultivation container 3 Medium layer 4 Ice plant 5 Irrigation tube 51 Irrigation hole 6 Irrigation liquid 100 Main stem settlement leaf 200 Side branch settlement leaf 201 Side branch

Claims (2)

吸塩植物のアイスプラントを水耕栽培するアイスプラント水耕栽培方法において、
カリウム及びナトリウムのモル比率がカリウム１に対してナトリウム２であり、カリウム及びナトリウムの総モル濃度が１５ｍｍｏｌ／ｌないし２００ｍｍｏｌ／ｌであるカリウム及びナトリウムからなる混合物をアイスプラントの培養液として栽培コンテナーに貯留し、
前記栽培コンテナーに貯留された前記培養液の上面に接して籾殻くん炭を敷設し、
アイスプラントを前記培養液に一部浸潤して前記籾殻くん炭上にて栽培することを
特徴とするアイスプラント水耕栽培方法。 In an ice plant hydroponics method of hydroponically cultivating an ice plant of a salt absorption plant,
A mixture of potassium and sodium in which the molar ratio of potassium and sodium is sodium 2 to potassium 1 and the total molar concentration of potassium and sodium is 15 mmol / l to 200 mmol / l is used as a culture solution for an ice plant in a cultivation container. Store,
Laying rice husk charcoal in contact with the top surface of the culture solution stored in the cultivation container,
Cultivating the ice plant on the rice husk charcoal by partially infiltrating the culture solution.
Ice plant hydroponics method characterized. 吸塩植物のアイスプラントを水耕栽培するアイスプラント水耕栽培装置において、In the ice plant hydroponic cultivation apparatus hydroponically cultivating the ice plant of the salt absorption plant,
カリウム及びナトリウムのモル比率がカリウム１に対してナトリウム２であり、カリウム及びナトリウムの総モル濃度が１５ｍｍｏｌ／ｌないし２００ｍｍｏｌ／ｌであるカリウム及びナトリウムからなる混合物をアイスプラントの培養液として栽培コンテナーと、A mixture of potassium and sodium in which the molar ratio of potassium and sodium is 2 with respect to potassium 1 and the total molar concentration of potassium and sodium is 15 mmol / l to 200 mmol / l is used as a culture solution for an ice plant. ,
前記栽培コンテナーに貯留された前記培養液の上面に接して籾殻くん炭を敷設する培地層とを備え、A medium layer for laying rice husk charcoal in contact with the upper surface of the culture solution stored in the cultivation container;
アイスプラントを前記栽培コンテナーの前記培養液に一部浸潤して、前記培地層の前記籾殻くん炭上にて栽培することをInfiltrating an ice plant partially in the culture solution of the cultivation container and cultivating on the rice husk charcoal of the medium layer
特徴とするアイスプラント水耕栽培装置。An ice plant hydroponics device.
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