JPH031938B2 - - Google Patents
Info
- Publication number
- JPH031938B2 JPH031938B2 JP58064469A JP6446983A JPH031938B2 JP H031938 B2 JPH031938 B2 JP H031938B2 JP 58064469 A JP58064469 A JP 58064469A JP 6446983 A JP6446983 A JP 6446983A JP H031938 B2 JPH031938 B2 JP H031938B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- meth
- acrylamide
- polymer
- artificial soil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 21
- 229920000642 polymer Polymers 0.000 claims description 18
- 239000002689 soil Substances 0.000 claims description 14
- 239000000178 monomer Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 7
- 241000196324 Embryophyta Species 0.000 description 6
- 239000003337 fertilizer Substances 0.000 description 6
- 230000008961 swelling Effects 0.000 description 6
- 239000008187 granular material Substances 0.000 description 4
- 239000008188 pellet Substances 0.000 description 4
- 150000003926 acrylamides Chemical class 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- KMBSSXSNDSJXCG-UHFFFAOYSA-N 1-[2-(2-hydroxyundecylamino)ethylamino]undecan-2-ol Chemical compound CCCCCCCCCC(O)CNCCNCC(O)CCCCCCCCC KMBSSXSNDSJXCG-UHFFFAOYSA-N 0.000 description 1
- KFTHUBZIEMOORC-UHFFFAOYSA-N 2-methylbut-2-enamide Chemical compound CC=C(C)C(N)=O KFTHUBZIEMOORC-UHFFFAOYSA-N 0.000 description 1
- 241000218999 Begoniaceae Species 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 241001112810 Streptocarpus Species 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 239000003619 algicide Substances 0.000 description 1
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 1
- -1 and if necessary Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 125000004836 hexamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- 239000012456 homogeneous solution Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- WFKDPJRCBCBQNT-UHFFFAOYSA-N n,2-dimethylprop-2-enamide Chemical compound CNC(=O)C(C)=C WFKDPJRCBCBQNT-UHFFFAOYSA-N 0.000 description 1
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 description 1
- 229940088644 n,n-dimethylacrylamide Drugs 0.000 description 1
- YLGYACDQVQQZSW-UHFFFAOYSA-N n,n-dimethylprop-2-enamide Chemical compound CN(C)C(=O)C=C YLGYACDQVQQZSW-UHFFFAOYSA-N 0.000 description 1
- YPHQUSNPXDGUHL-UHFFFAOYSA-N n-methylprop-2-enamide Chemical compound CNC(=O)C=C YPHQUSNPXDGUHL-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- Y02P60/216—
Landscapes
- Cultivation Of Plants (AREA)
- Hydroponics (AREA)
Description
【発明の詳細な説明】
本発明は、植物の水耕栽培用人工土壌に関す
る。さらに詳細には、（メタ）アクリルアミド類
成分単位と架橋性単量体成分単位とから形成され
た透明性または半透明性の水膨潤性ゲル状重合体
からなる水耕栽培用人工土壌、とくに観賞水耕栽
培用に適した人工土壌を提供するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to artificial soil for hydroponic cultivation of plants. More specifically, artificial soil for hydroponic cultivation, especially for ornamental cultivation, is made of a transparent or translucent water-swellable gel-like polymer formed from a (meth)acrylamide component unit and a crosslinkable monomer component unit. This provides artificial soil suitable for hydroponic cultivation.
従来、植物の水耕栽培を行う際には、肥料成分
を含んだ水中で植物を直接栽培する方法または肥
料成分を溶解した水中に小石、砂利、ガラス片、
プラスチツクスなどを充填した人工土壌中で栽培
を行う方法などが行われている。前者の方法で
は、水耕栽培の際に根の保持が充分になされてい
ないので根が浮遊したり、植物の転倒、沈降、通
気性の悪化などの欠点があり、後者の方法では根
の保持はできても保水性が充分でなく、また美観
上も問題があり、観賞用水耕栽培の場合、根の観
賞には適当でない。 Conventionally, when cultivating plants hydroponically, plants are grown directly in water containing fertilizer components, or pebbles, gravel, glass pieces, etc. are grown in water containing fertilizer components.
Methods such as cultivating in artificial soil filled with plastic etc. are being used. The former method does not adequately retain roots during hydroponic cultivation, resulting in roots floating, plants falling over, settling, and poor ventilation. Even if it can be grown, it does not have sufficient water retention and is aesthetically problematic, making it unsuitable for ornamental hydroponic cultivation.
本発明者らは、（メタ）アクリルアミド類成分
単位と架橋性単量体成分単位とからなる水膨潤性
ゲル状重合体を水耕栽培用人工土壌として使用す
ると、前記従来の方法に比べて保水性、根の保持
性、空気保持性および観賞性などにおいて格段に
優れていることを見出し、本発明に到達した。 The present inventors have found that when a water-swellable gel-like polymer composed of (meth)acrylamides component units and crosslinkable monomer component units is used as artificial soil for hydroponic cultivation, water retention is improved compared to the conventional method. The present invention was achieved based on the discovery that it is significantly superior in terms of growth, root retention, air retention, ornamental quality, etc.
すなわち、本発明は、（メタ）アクリルアミド
類成分単位(a)および架橋性単量体成分単位(b)とか
ら形成された水膨潤性ゲル状重合体からなる水耕
栽培用人工土壌である。 That is, the present invention is an artificial soil for hydroponic cultivation comprising a water-swellable gel-like polymer formed from a (meth)acrylamide component unit (a) and a crosslinkable monomer component unit (b).
本発明の水耕栽培用人工土壌に使用される重合
体は、（メタ）アクリルアミド類成分単位(a)と架
橋性単量体成分単位(b)とから形成された水膨潤性
ゲル状重合体である。ここで、（メタ）アクリル
アミド類成分単位は、アクリルアミド、メタアク
リルアミドまたはこれらのＮ−アルキル置換体で
あり、具体的にはアクリルアミド、メタクリルア
ミド、Ｎ−メチルアクリルアミド、Ｎ，Ｎ−ジメ
チルアクリルアミド、Ｎ−メチルメタクリルアミ
ド、Ｎ，Ｎ−ジメチル（メタ）アクリルアミドな
どを例示することができる。これらの（メタ）ア
クリルアミド類成分単位のうちでは、アクリルア
ミドまたはメタクリルアミド成分単位であること
がとくに好ましい。また、架橋性単量体成分単位
として具体的には、Ｎ，N′−メチレンビス（メ
タ）アクリルアミド、Ｎ，N′−エチレンビス
（メタ）アクリルアミド、Ｎ，N′−エチリデンビ
ス（メタ）アクリルアミド、Ｎ，N′−プロピレ
ンビス（メタ）アクリルアミド、Ｎ，N′−プロ
ピリデンビス（メタ）アクリルアミド、Ｎ，
N′−ヘキサメチレンビス（メタ）アクリルアミ
ド、Ｎ，N′−フエニレンビス（メタ）アクリル
アミドなどのビス（メタ）アクリルアミド類、エ
チレンビス（メタ）アクリレート、プロピレンビ
ス（メタ）アクリレート、ヘキサメチレンビス
（メタ）アクリレートなどのビス（メタ）アクリ
レート類、ジエチレングリコールビス（メタ）ア
クリレート、トリエチレングリコールビス（メ
タ）アクリレート、ポリエチレングリコールビス
（メタ）アクリレートなどを例示することができ、
二種以上の混合成分であつても差しつかえない。
これらの架橋性単量体成分単位のうちではＮ，
N′−メチレンビス（メタ）アクリルアミド成分
単位であることがとくに好ましい。該架橋性単量
体成分単位の含有割合は、前記（メタ）アクリル
アミド類成分単位に対して通常0.01ないし10モル
％、好ましくは1.1ないし５モル％の範囲である。
該ゲル状重合体を50〜180℃で３〜40時間乾燥し
たものの密度は通常1.0ないし1.8g／cm3、好まし
くは1.1ないし1.5g／cm3の範囲にあり、24℃の水
中での膨潤度は前記乾燥重合体に対して吸収され
た水の重量比で通常３ないし5000、好ましくは８
ないし1000の範囲である。なお、重合体乾燥物の
密度および膨潤度は次の方法で測定した値であ
る。 The polymer used in the artificial soil for hydroponic cultivation of the present invention is a water-swellable gel-like polymer formed from (meth)acrylamide component units (a) and crosslinkable monomer component units (b). It is. Here, the (meth)acrylamides component unit is acrylamide, methacrylamide, or an N-alkyl substituted product thereof, and specifically, acrylamide, methacrylamide, N-methylacrylamide, N,N-dimethylacrylamide, N- Examples include methylmethacrylamide and N,N-dimethyl(meth)acrylamide. Among these (meth)acrylamide component units, acrylamide or methacrylamide component units are particularly preferred. Further, specific examples of the crosslinkable monomer component unit include N,N'-methylenebis(meth)acrylamide, N,N'-ethylenebis(meth)acrylamide, N,N'-ethylidenebis(meth)acrylamide, N,N'-propylene bis(meth)acrylamide, N,N'-propylidene bis(meth)acrylamide, N,
Bis(meth)acrylamides such as N'-hexamethylene bis(meth)acrylamide, N,N'-phenylene bis(meth)acrylamide, ethylene bis(meth)acrylate, propylene bis(meth)acrylate, hexamethylene bis(meth)acrylate Examples include bis(meth)acrylates such as acrylate, diethylene glycol bis(meth)acrylate, triethylene glycol bis(meth)acrylate, polyethylene glycol bis(meth)acrylate, etc.
It is acceptable even if it is a mixture of two or more components.
Among these crosslinkable monomer component units, N,
Particularly preferred are N'-methylenebis(meth)acrylamide component units. The content of the crosslinkable monomer component unit is generally in the range of 0.01 to 10 mol%, preferably 1.1 to 5 mol%, based on the (meth)acrylamide component unit.
The density of the gel-like polymer dried at 50 to 180°C for 3 to 40 hours is usually in the range of 1.0 to 1.8 g/cm 3 , preferably 1.1 to 1.5 g/cm 3 , and when swelled in water at 24°C The weight ratio of absorbed water to the dry polymer is usually 3 to 5000, preferably 8.
The range is from 1000 to 1000. The density and degree of swelling of the dried polymer were measured using the following method.
(1) 密度；重合体乾燥物の一定重量（Wg）を25
mlのピクノメーターに採取した。次いで重合体
を入れたピクノメーターを24℃の恒温槽に入
れ、24℃のトルエンで満した。これに要したト
ルエン重量よりトルエン容積（Ｖ）を求め、次
式により算出した。(1) Density; constant weight (Wg) of dry polymer at 25
ml was collected in a pycnometer. The pycnometer containing the polymer was then placed in a constant temperature bath at 24°C and filled with toluene at 24°C. The toluene volume (V) was determined from the weight of toluene required for this, and calculated using the following formula.
重合体密度（ｇ／cm3）＝Ｗ／25−Ｖ
(2) 膨潤度；重合体乾燥物の一定重量（W1g）を
採取し、24℃で24時間水中に浸漬し、十分重合
体を膨潤させた。しかるのち余剰の水を除去し
て膨潤ゲル状物の重量（W2g）を測定して次式
により算出した。 Polymer density (g/cm 3 ) = W/25-V (2) Swelling degree: Take a certain weight (W 1 g) of the dried polymer and immerse it in water for 24 hours at 24°C to fully hydrate the polymer. swelled. Thereafter, excess water was removed, and the weight (W 2 g) of the swollen gel-like material was measured and calculated using the following formula.
膨潤度（24℃）＝W2−W1／W1
本発明の水耕栽培用人工土壌は水に膨潤させた
状態で使用され、水には必要に応じて殺藻剤、防
黴剤、肥料成分、例えばホーグランド液などを溶
解させておくこともできる。また、場合によつて
は観賞効果を増すために着色料を溶解させておい
ても差しつかえない。本発明の水耕栽培用人工土
壌には、成長した植物を移植することもできる
し、苗を移植することもできるし、種を播くこと
もできる。 Degree of swelling (24°C) = W 2 - W 1 /W 1 The artificial soil for hydroponic cultivation of the present invention is used in a swollen state in water, and if necessary, algaecides, fungicides, Fertilizer components, such as Hoagland's solution, can also be dissolved. In some cases, it is also possible to dissolve a coloring agent in order to enhance the ornamental effect. Into the artificial soil for hydroponic cultivation of the present invention, grown plants can be transplanted, seedlings can be transplanted, and seeds can be sown.
本発明の水耕栽培用人工土壌は透明性、空気保
存性、保水性および根の保持性に優れているので
観賞栽培に適しており、また根の発育状況が観察
できるので試験観察栽培にも適している。これら
の用途には、ガラス、ポリスチレン、ポリメチル
メタクリレート、ポリオレフインなどの透明性の
ポツトまたは容器を用いて栽培を行うのが好適で
ある。 The artificial soil for hydroponic cultivation of the present invention has excellent transparency, air preservation, water retention, and root retention, so it is suitable for ornamental cultivation, and since the growth status of roots can be observed, it can also be used for experimental cultivation. Are suitable. For these uses, it is suitable to cultivate in transparent pots or containers made of glass, polystyrene, polymethyl methacrylate, polyolefin, or the like.
次に、本発明を実施例によつて具体的に説明す
る。 Next, the present invention will be specifically explained using examples.
参考例 １
9.79gのアクリルアミド、0.21gのＮ，N′−メチ
レンビスアクリルアミドを90gの水に溶解した。
単量体を完全に溶解した後、0.01gの過硫酸アン
モニウムを添加し、溶解した。得られた均一溶液
を直径４mm、深さ５mmの円筒状のくぼみを多数有
する型の中に流し込み、80℃で１時間反応を行つ
た。この反応で生成したゲル状重合体を取り出
し、流水で洗浄を行い粒状物中に残存する単量体
成分を除去した。洗浄後の粒状物は60〜80℃の熱
風乾燥機中で乾燥した。得られた重合体物質は次
の物理的性質を有していた。Reference Example 1 9.79g of acrylamide and 0.21g of N,N'-methylenebisacrylamide were dissolved in 90g of water.
After the monomer was completely dissolved, 0.01 g of ammonium persulfate was added and dissolved. The obtained homogeneous solution was poured into a mold having many cylindrical depressions with a diameter of 4 mm and a depth of 5 mm, and a reaction was carried out at 80° C. for 1 hour. The gel-like polymer produced in this reaction was taken out and washed with running water to remove the monomer components remaining in the granules. The washed granules were dried in a hot air dryer at 60-80°C. The resulting polymeric material had the following physical properties.
(1) 重合体の密度（24℃）は1.276（ｇ／cm3）であ
つた。(1) The density (24°C) of the polymer was 1.276 (g/cm 3 ).
(2) 24℃の水に浸漬すると吸水し、透明な水膨潤
ゲル状物となつた。この時の膨潤度は29であつ
た。(2) When immersed in water at 24°C, it absorbed water and became a transparent water-swollen gel. The degree of swelling at this time was 29.
参考例 ２
アクリルアミドの代りにＮ，N′−ジメチルア
クリルアミドを用いた他は参考例１に準じてゲル
状重合体を製造した。得られた重合体物質の密度
（24℃）は1.122（ｇ／cm3）であり、24℃の水に浸
漬すると透明な水膨潤ゲル状物となつた。この時
の膨潤度は21であつた。Reference Example 2 A gel polymer was produced according to Reference Example 1, except that N,N'-dimethylacrylamide was used instead of acrylamide. The density of the obtained polymeric material (24°C) was 1.122 (g/cm 3 ), and when immersed in water at 24°C, it became a transparent water-swollen gel. The degree of swelling at this time was 21.
参考例 ３
参考例１で用いたアクリルアミド類成分単位
(a)、架橋性単量体成分(b)、およびラジカル開始剤
を含む水溶液を80℃、滞留時間が５分になるよう
に内径４mmのチユーブ状重合器に連続的に供給し
た。得られた直径４mmのストランド状の水膨潤物
を連続的に４mmの長さで切断した。得られた水膨
潤物は参考例１に準じて後処理を行い、粒径の均
一なペレツト状粒状物を得た。このペレツト粒状
物の密度（24℃）は1.291（ｇ／cm3）であり、24℃
の水に浸漬すると透明な水膨潤ゲル状物となつ
た。この時の膨潤度は31であつた。Reference Example 3 Acrylamide component unit used in Reference Example 1
An aqueous solution containing (a), a crosslinkable monomer component (b), and a radical initiator was continuously supplied to a tubular polymerization vessel having an inner diameter of 4 mm at 80° C. and with a residence time of 5 minutes. The obtained strand-shaped water-swollen product with a diameter of 4 mm was continuously cut into a length of 4 mm. The obtained water-swollen product was post-treated according to Reference Example 1 to obtain pellet-like granules with uniform particle size. The density of this pellet granule (at 24°C) is 1.291 (g/cm 3 ), and at 24°C
When immersed in water, it became a transparent water-swollen gel. The degree of swelling at this time was 31.
実施例
前記参考例３で調製した水膨潤性ゲル状重合体
のペレツト状物を希釈した液肥（ホーグランド
液）を含む水に浸漬して肥料を含む透明な水膨潤
ペレツト（直径４mm、長さ４mm）を得た。該膨潤
ペレツトを直径７cm、深さ10cmの透明ガラス容器
３個にそれぞれ充填することにより水耕栽培用人
工土壌とした。Example The water-swellable gel polymer pellets prepared in Reference Example 3 were immersed in water containing diluted liquid fertilizer (Hoagland's solution) to produce transparent water-swellable pellets containing fertilizer (diameter 4 mm, length 4 mm) was obtained. The swollen pellets were filled into three transparent glass containers each having a diameter of 7 cm and a depth of 10 cm to prepare artificial soil for hydroponic cultivation.
該水耕栽培用人工土壌を充填した各容器に、ベ
ゴニヤ、セントポーリヤおよび折りづる蘭の約10
cmの苗を移植し、日光の差し込む室内に置き、液
肥の希薄水溶液を補充しながら観賞用に栽培し
た。 Approximately 10 begonias, saintpaulias and orchids are placed in each container filled with the artificial soil for hydroponic cultivation.
cm seedlings were transplanted, placed indoors with sunlight, and cultivated for ornamental purposes while supplemented with a dilute solution of liquid fertilizer.
この人工土壌で栽培した各植物は４カ月後も順
調に生育中で根の生育状況もよく観察することが
できた。 The plants grown in this artificial soil were still growing steadily after four months, and the growth of their roots could be observed well.
Claims (1)
性単量体成分単位(b)とから形成された水膨潤性ゲ
ル状重合体からなる水耕栽培用人工土壌。1. An artificial soil for hydroponic cultivation comprising a water-swellable gel-like polymer formed from a (meth)acrylamide component unit (a) and a crosslinkable monomer component unit (b).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58064469A JPS59192026A (en) | 1983-04-14 | 1983-04-14 | Artificial soil for hydroponic culture |
| DE8484302554T DE3464761D1 (en) | 1983-04-14 | 1984-04-13 | Process for producing granular, water-swellable crosslinked acrylic copolymer, and its use |
| EP84302554A EP0122797B2 (en) | 1983-04-14 | 1984-04-13 | Process for producing granular, water-swellable crosslinked acrylic copolymer, and its use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58064469A JPS59192026A (en) | 1983-04-14 | 1983-04-14 | Artificial soil for hydroponic culture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59192026A JPS59192026A (en) | 1984-10-31 |
| JPH031938B2 true JPH031938B2 (en) | 1991-01-11 |
Family
ID=13259113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58064469A Granted JPS59192026A (en) | 1983-04-14 | 1983-04-14 | Artificial soil for hydroponic culture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59192026A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997008938A1 (en) * | 1995-09-05 | 1997-03-13 | Mukoyama Orchids Ltd. | Support for plant culture and method for plant growth |
| WO1998005196A1 (en) * | 1996-08-01 | 1998-02-12 | M & M Laboratory Co., Ltd. | Water-holding carrier for plants |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53149190A (en) * | 1977-06-01 | 1978-12-26 | Sanyo Chem Ind Ltd | Water absorbing agent |
| JPS5499196A (en) * | 1978-01-23 | 1979-08-04 | Kitani Kazumasa | Swellable water retention agent and its preparation |
| JPS5499188A (en) * | 1978-01-23 | 1979-08-04 | Kitani Kazumasa | Swellable water retention agent and manufacture therefor |
| JPS57174028A (en) * | 1981-04-20 | 1982-10-26 | Kao Corp | Base material for plant cultivation |
-
1983
- 1983-04-14 JP JP58064469A patent/JPS59192026A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53149190A (en) * | 1977-06-01 | 1978-12-26 | Sanyo Chem Ind Ltd | Water absorbing agent |
| JPS5499196A (en) * | 1978-01-23 | 1979-08-04 | Kitani Kazumasa | Swellable water retention agent and its preparation |
| JPS5499188A (en) * | 1978-01-23 | 1979-08-04 | Kitani Kazumasa | Swellable water retention agent and manufacture therefor |
| JPS57174028A (en) * | 1981-04-20 | 1982-10-26 | Kao Corp | Base material for plant cultivation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997008938A1 (en) * | 1995-09-05 | 1997-03-13 | Mukoyama Orchids Ltd. | Support for plant culture and method for plant growth |
| WO1998005196A1 (en) * | 1996-08-01 | 1998-02-12 | M & M Laboratory Co., Ltd. | Water-holding carrier for plants |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59192026A (en) | 1984-10-31 |
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