JPS63317029A - Culture device of spray type - Google Patents
Culture device of spray typeInfo
- Publication number
- JPS63317029A JPS63317029A JP62154203A JP15420387A JPS63317029A JP S63317029 A JPS63317029 A JP S63317029A JP 62154203 A JP62154203 A JP 62154203A JP 15420387 A JP15420387 A JP 15420387A JP S63317029 A JPS63317029 A JP S63317029A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- culture solution
- plant
- roots
- plants
- 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.)
- Granted
Links
- 239000007921 spray Substances 0.000 title description 17
- 238000005507 spraying Methods 0.000 claims abstract description 13
- 230000001276 controlling effect Effects 0.000 abstract description 6
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 51
- 241000196324 Embryophyta Species 0.000 description 40
- 239000000243 solution Substances 0.000 description 40
- 239000007788 liquid Substances 0.000 description 18
- 239000003673 groundwater Substances 0.000 description 17
- 241000220223 Fragaria Species 0.000 description 13
- 230000004069 differentiation Effects 0.000 description 12
- 235000016623 Fragaria vesca Nutrition 0.000 description 7
- 235000011363 Fragaria x ananassa Nutrition 0.000 description 7
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 7
- 229920002554 vinyl polymer Polymers 0.000 description 7
- 239000003337 fertilizer Substances 0.000 description 6
- 238000003860 storage Methods 0.000 description 6
- 239000012531 culture fluid Substances 0.000 description 5
- 235000021012 strawberries Nutrition 0.000 description 5
- 239000002609 medium Substances 0.000 description 4
- 229920006328 Styrofoam Polymers 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000008261 styrofoam Substances 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 206010025476 Malabsorption Diseases 0.000 description 2
- 208000004155 Malabsorption Syndromes Diseases 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241000257303 Hymenoptera Species 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012364 cultivation method Methods 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000008147 floral bud development Effects 0.000 description 1
- 239000001963 growth medium Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000015816 nutrient absorption Nutrition 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
Landscapes
- Hydroponics (AREA)
Abstract
Description
【発明の詳細な説明】
発明の目的
（産業上の利用分野）
この発明は植物体の根に培養液をミスト状にして直接吹
き付ける噴霧式栽培装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to a spray-type cultivation device that directly sprays a mist of a culture solution onto the roots of a plant.
（従来の技術）
従来、この種の装置として、例えば、特開昭４９−９１
８３３号公報に開示されたものがある。(Prior art) Conventionally, as this type of device, for example, Japanese Patent Application Laid-Open No. 49-91
There is one disclosed in Publication No. 833.
第５図に示すように、この装置は太陽光を透過させる弓
形の屋［４１を有する育成室４２を備え、その−側部に
は内部を冷却するための蒸発式クーラー４３及び内部を
加熱するための炉（図示略）が設けられている。そして
、必要に応じて蒸発式クーラー４３又は炉を動作させて
内部の温度調節等を行うようになっている。As shown in FIG. 5, this device is equipped with a growth chamber 42 having an arcuate chamber 41 that transmits sunlight, and an evaporative cooler 43 on the side for cooling the interior and an evaporative cooler 43 for heating the interior. A furnace (not shown) is provided for this purpose. Then, if necessary, the evaporative cooler 43 or the furnace is operated to adjust the internal temperature, etc.
第６図に示すように、育成室４２の内部には植物体Ｐを
支持する断面二等辺三角形状の複数の支持構造物４４が
並設されている。支持構造物４４の内側には、同構造物
４４の内側に嵌入された植物体Ｐの根Ｒに培養液を噴霧
するための複数のスプレーヘッド４５を有する導管４６
が配設されている。そして、培養液を導管４６に給送し
、スプレーヘッド４５を介して植物体ＰのｍＲに噴霧す
るようになっている。As shown in FIG. 6, inside the growth chamber 42, a plurality of support structures 44 each having an isosceles triangular cross section and supporting the plant body P are arranged in parallel. Inside the support structure 44, there is a conduit 46 having a plurality of spray heads 45 for spraying a culture solution onto the roots R of the plant P fitted inside the support structure 44.
is installed. The culture solution is then fed to the conduit 46 and sprayed onto the mR of the plant P through the spray head 45.
（発明が解決しようとする問題点）
ところが、前記装置では蒸発式クーラー４３により育成
室４２内部が冷却されるものの、支持構造物４４の内側
を冷却するための対策が何ら講じられていなかった。即
ち、育成室４２は屋根４１から太陽光を取り入れるよう
になっているので、太陽光の放射熱により蒸発式クーラ
ー４３の冷却効果が阻害され、広大な育成室４２内の隅
々まで冷却することが困難であった。従って、支持構造
物４４の内側まで高率良く冷却することができず、植物
体Ｐの根圏を高率良く冷却することができなかった。こ
れは、根Ｒを裸出させて培養液を噴霧する噴霧式栽培装
置においては致命的な障害であった。即ち、植物の種類
によっては根圏温度が高くなると根の養分吸収性が悪く
なったり、根の老化が助長されたりするという問題が生
じる。又、根圏の低温要求性の高い植物では、根圏温度
が高くなると花芽分化等、植物体の成長・発達が阻害さ
れるという問題が生じる。(Problems to be Solved by the Invention) However, in the above device, although the inside of the growth chamber 42 is cooled by the evaporative cooler 43, no measures have been taken to cool the inside of the support structure 44. That is, since the growth chamber 42 is designed to take in sunlight from the roof 41, the cooling effect of the evaporative cooler 43 is inhibited by the radiant heat of the sunlight, making it impossible to cool every corner of the vast growth chamber 42. was difficult. Therefore, it was not possible to cool the inside of the support structure 44 with a high efficiency, and the rhizosphere of the plant P could not be cooled with a high efficiency. This was a fatal hindrance in a spray-type cultivation device that exposes the root R and sprays the culture solution. That is, depending on the type of plant, when the rhizosphere temperature becomes high, the problem arises that the nutrient absorption of the roots deteriorates or the aging of the roots is promoted. Furthermore, in plants that have a high rhizosphere temperature requirement, a problem arises in that when the rhizosphere temperature becomes high, the growth and development of the plant body, such as flower bud differentiation, is inhibited.
この発明は前述した事情に鑑みてなされたものであって
、簡単な構成により植物体の特性に応じた根圏温度の調
節を行い得る噴霧式栽培装置の提供を目的としている。The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a spray-type cultivation device that can adjust the rhizosphere temperature according to the characteristics of a plant with a simple configuration.
発明の構成
（問題点を解決するための手段）
上記の目的を達成するためにこの発明においては、植物
体の根を内側に嵌入した状態で植物体を支持する複数の
支持孔を備えた外壁よりなる中空状の栽培ケースと、栽
培ケースの内側に配設され、根に培養液を噴霧供給する
培養液噴霧手段と、栽培ケースの内側に配設され、植物
体の根圏温度を調節するために所定温度の媒体を流通さ
せる温度調節用通路とを備えている。Structure of the Invention (Means for Solving Problems) In order to achieve the above object, the present invention provides an outer wall provided with a plurality of support holes for supporting a plant with the roots of the plant inserted inside. a hollow cultivation case, a culture solution spraying means disposed inside the cultivation case to spray and supply a culture solution to the roots, and a culture solution spraying means disposed inside the cultivation case regulating the rhizosphere temperature of the plant body. For this purpose, a temperature adjustment passageway is provided for circulating a medium at a predetermined temperature.
（作用）
従って、支持孔にｔ支持された植物体の根は栽培ケース
の内側に裸出され、充分な酸素が供給される。又、培養
液噴霧手段により根に培養液が噴霧され、植物体に肥料
及び水分が供給される。(Function) Therefore, the roots of the plant supported in the support hole are exposed inside the cultivation case, and sufficient oxygen is supplied. Further, the culture solution is sprayed onto the roots by the culture solution spraying means, and fertilizer and moisture are supplied to the plant body.
一方、温度調節用通路に低温の媒体を流通させることに
より、その通路を介して栽培ケースの内側が冷却されて
植物体の根圏が冷却される。又、温度調節用通路に高温
の媒体を流通させることにより、その通路を介して栽培
ケースの内側が暖められて植物体の根圏が暖められる。On the other hand, by circulating a low-temperature medium through the temperature control passage, the inside of the cultivation case is cooled through the passage, and the rhizosphere of the plant body is cooled. Furthermore, by circulating a high temperature medium through the temperature adjustment passage, the inside of the cultivation case is heated through the passage, and the rhizosphere of the plant body is warmed.
（実施例）
以下、この発明をイチゴの栽培装置に具体化した一実施
例を第１図〜第４図に基いて詳細に説明する。(Example) Hereinafter, an example in which the present invention is embodied in a strawberry cultivation apparatus will be described in detail with reference to FIGS. 1 to 4.
第１．３図に示すように、この栽培装置は太陽光を透過
させる透明のビニールハウス１を備え、同ハウス１の内
側にはその長手方向に延びる断面略台形状の栽培ケース
２ （長さ１０〜１５ｍ）が３列平行に配設されている
。As shown in Figure 1.3, this cultivation device is equipped with a transparent vinyl house 1 that allows sunlight to pass through, and inside the greenhouse 1 there is a cultivation case 2 (length: 10 to 15 m) are arranged in three parallel rows.
ハウス１の側壁には電動ファン（図示略）を備えた複数
の換気窓３が設けられ、電動ファンの動作に基きハウス
１内の強制換気が行われる。又、ハウス１の屋根には換
気用の天窓（図示略）が設けられている。A plurality of ventilation windows 3 equipped with electric fans (not shown) are provided on the side walls of the house 1, and forced ventilation within the house 1 is performed based on the operation of the electric fans. Further, the roof of the house 1 is provided with a skylight (not shown) for ventilation.
又、第１図に示すように、ハウス１の内側上部に架設さ
れた複数の案内ワイヤ４には遮光網５（この場合、遮光
率２０％のｍ）が矢印Ｘ方向に往復動可能に掛装されて
いる。そして、巻取りロープ（図示略）の操作に基き、
遮光網５が第１図に実線で示すようにハウス１の天井全
体を覆って天井から進入する太陽光の一部を遮断する遮
光位置と、同図に２点鎖線で示すようにハウスｌの両隅
に束ねらて太陽光の進入を許容する退避位置とに切替配
置される。又、ハウス１の内側両側には遮光網６が設け
られ、巻取りロープ（図示略）の操作に基き上方へ巻き
上げ可能になっている。そして、第１図に示すように、
遮光ｙ１６がハウス１の両側壁全体を覆う位置に配置さ
れた状態では、ハウス１の側壁から進入する太陽光の一
部が遮断される。このように、遮光網５，６によりハウ
ス１の内側全体を覆うことにより、ハウス１市に進入す
る太陽光の略２ｏ％が遮断される。又、この遮光状態は
イチゴの成育段階に応じて適宜に設定されるものである
。Further, as shown in FIG. 1, a light-shielding net 5 (in this case, m with a light-shielding rate of 20%) is hung on a plurality of guide wires 4 installed inside the upper part of the house 1 so as to be able to reciprocate in the direction of the arrow X. equipped. Then, based on the operation of the winding rope (not shown),
The shading net 5 covers the entire ceiling of the house 1 and blocks part of the sunlight entering from the ceiling, as shown by the solid line in FIG. They are bundled at both corners and switched to a retracted position that allows sunlight to enter. Further, a light-shielding net 6 is provided on both sides of the inside of the house 1, and can be wound upward based on the operation of a winding rope (not shown). Then, as shown in Figure 1,
When the light shielding y16 is disposed at a position covering the entire side walls of the house 1, a portion of sunlight entering from the side walls of the house 1 is blocked. In this manner, by covering the entire inside of the house 1 with the shade nets 5 and 6, approximately 20% of sunlight entering the house 1 is blocked. Further, this light-shielding state is appropriately set depending on the growth stage of the strawberry.
次に、栽培ケース２について説明する。尚、３個の栽培
ケース２はそれぞれ同様の構造をなしているので、１個
の栽培ケース２についてのみ説明する。
−
第１．２図に示すように、ノ＼ウス１の長手方向に沿っ
て２列に並設された複数のコンクリートブロックよりな
る基台７上には栽培ケース２の骨組みをなす支持フレー
ム８が立設されている。支持フレーム８は両基台７に沿
って設けられた一対の下枠９を備え、両下枠９はその長
手方向に等間隔をもって配置された連結棒１０を介して
連結されている。又、下枠９上には斜めに立設された一
対の柱状棒１１及び両柱状棒１１の上端を連結する上枠
１２よりなる台形フレーム１３が下枠９の長手方向に等
間隔をもって配置されている。各台形フレーム１３の両
柱状棒１１間上部には３本の支持棒１４．１５．１６が
平行に取着されている。Next, cultivation case 2 will be explained. In addition, since the three cultivation cases 2 each have the same structure, only one cultivation case 2 will be explained.
- As shown in Figure 1.2, a support frame 8 that forms the framework of the cultivation case 2 is mounted on a base 7 made of a plurality of concrete blocks arranged in two rows along the longitudinal direction of the cultivation case 2. has been erected. The support frame 8 includes a pair of lower frames 9 provided along both bases 7, and both lower frames 9 are connected via connecting rods 10 arranged at equal intervals in the longitudinal direction. Further, on the lower frame 9, a trapezoidal frame 13 is arranged at equal intervals in the longitudinal direction of the lower frame 9. The trapezoidal frame 13 is made up of a pair of columnar bars 11 that stand diagonally and an upper frame 12 that connects the upper ends of both columnar bars 11. ing. Three support rods 14, 15, and 16 are attached in parallel to the upper part of each trapezoidal frame 13 between the columnar rods 11.
更に、各台形フレーム１３の上部及び中間部は連結棒１
７，１８を介してぞれ連結されている。Furthermore, the upper and middle parts of each trapezoidal frame 13 are connected to the connecting rod 1.
7 and 18, respectively.
上記のように組付られた支持フレーム８の長手方向両側
には複数の発泡スチロールパネルよりなる外壁１９が取
着されている。この外壁１９上には植物体Ｐを嵌合して
支持する複数の支持孔１９ａ（直径１２〜１３■■）が
等間隔で形成されている。又、支持フレーム８の上側及
び両側端には複数の発泡スチロールパネルよりなる外壁
２０等が取着されている。又、外壁１９．２０等の全面
には黒色のビニールシート２１が取着され、同ビニール
シート２１上には縦方向に延びる複数のスリン）２１ａ
が外壁１９上の各支持孔１９ａに対応して形成されてい
る。このように、前記発泡スチロールパネルよりなる外
壁１９．２０等及びビニールシート２１により支持フレ
ーム８の外周全体が被覆され、断熱効果を備えた中空状
の栽培ケース２が形成されている。Outer walls 19 made of a plurality of styrofoam panels are attached to both sides in the longitudinal direction of the support frame 8 assembled as described above. On this outer wall 19, a plurality of support holes 19a (diameter 12 to 13 mm) into which the plant body P is fitted and supported are formed at equal intervals. Further, an outer wall 20 made of a plurality of styrofoam panels is attached to the upper side and both side ends of the support frame 8. In addition, a black vinyl sheet 21 is attached to the entire surface of the outer wall 19, 20, etc., and on the vinyl sheet 21 are a plurality of slinters (21a) extending in the vertical direction.
are formed corresponding to each support hole 19a on the outer wall 19. In this way, the entire outer periphery of the support frame 8 is covered with the outer walls 19, 20 made of the styrofoam panels and the vinyl sheet 21, forming a hollow cultivation case 2 with a heat insulating effect.
前記載壇ケース２の内側において、各支持棒１４上には
栽培ケース２の長手方向に延びる合成樹脂製の通水管２
２が支持されている。この通水管２２の一端は封鎖され
、他端は栽培ケース２の一側端から外部へ導出されてい
る。通水管２２上には上方へ延びる分岐管２２ａが等間
隔をもって設けられ、その上端は栽培ケース２の上側へ
突設されている。又、分岐管２２ａの上端には通水管２
２へ供給された水を栽培ケース２の外周にミスト状に噴
霧するための噴射ノズル２３が取着されている。Inside the platform case 2, on each support rod 14 is a water pipe 2 made of synthetic resin that extends in the longitudinal direction of the cultivation case 2.
2 is supported. One end of this water pipe 22 is closed, and the other end is led out from one end of the cultivation case 2. On the water pipe 22, upwardly extending branch pipes 22a are provided at equal intervals, and the upper ends of the branch pipes 22a are provided to protrude above the cultivation case 2. Also, a water pipe 2 is provided at the upper end of the branch pipe 22a.
A spray nozzle 23 for spraying the water supplied to the cultivation case 2 onto the outer periphery of the cultivation case 2 in the form of a mist is attached.
更に、前記通水管２２の下方において各支持棒１５上に
は栽培ケース２の長手方向に平行に延びる合成樹脂製の
一対の通水管２４が支持されている。通水管２４の両端
は栽培ケース２の両側端から外部へそれぞれ導出されて
いる。Furthermore, a pair of synthetic resin water pipes 24 extending parallel to the longitudinal direction of the cultivation case 2 are supported on each support rod 15 below the water pipes 22 . Both ends of the water pipe 24 are led out from both ends of the cultivation case 2, respectively.
又、前記両通水管２２．２４の一端は共通の給水管２５
に接続され、同給水管２５は給水ポンプ２６に接続され
ている。そして、給水ポンプ２６の動作に基き汲み上げ
られた地下水Ｗは給水管２５を介して通水管２２．２４
に送られ、通水管２４を介して地下水Ｗにより栽培ケー
ス２内側上部の空気が地下水温に近い温度に保持される
。Also, one end of both water pipes 22 and 24 is connected to a common water supply pipe 25.
The water supply pipe 25 is connected to a water supply pump 26. The groundwater W pumped up based on the operation of the water supply pump 26 is pumped up through the water supply pipe 25 to the water pipes 22 and 24.
The air in the upper part of the inside of the cultivation case 2 is maintained at a temperature close to the groundwater temperature by the groundwater W through the water pipe 24.
一方、通水管２４の下方において各支持棒１６ ・上に
は栽培ケース２の長手方向に平行に延びる培養液流送用
の通液管２７が支持されている。又、通液管２７の下方
において各連結棒１０上には栽培ケース２の長手方向に
平行に延びる培養液流送用の一対の通液管２８が支持さ
れている。各管２７．２８の一端は封鎖され、他端は栽
培ケース２の一側端からの外部へ導出されている。又、
各管２７．２Ｂ上には間管２７．２８へ供給された培養
液を栽培ケース２の内側にミスト状に噴霧するための噴
射ノズル２９が等間隔をもって配設されている。そして
、その噴射ノズル２９により、外壁１９の支持孔１９ａ
から栽培ケース２の内側に嵌入された植物体Ｐの根Ｒに
培養液が噴霧供給される。更に、栽培ケース２の外側へ
導出された各通液管２７．２８の一端は培養液供給用の
共通の給液管３０に接続されている。この給液管３０は
給液ポンプ３１に接続され、同ポンプ３１の動作に暴き
培養液貯留槽３２に貯留された培養液Ｆが給液管３０を
介して通液管２７．２８に供給される。尚、前記通液管
２７．２８及び噴射ノズル２９等により培養液噴霧手段
が構成されている。この場合の培養液Ｆはイチゴの噴霧
式栽培用とじて各種肥料成分を過不足なく調合したもの
であり、その濃度はイチゴの成育段階に応じて適宜に設
定されるものである。又、培養液貯留槽３２の外周には
通水管（図示略）が設けられ、その通水管により貯留槽
３２の外周に地下水Ｗが供給されて培養液が常時所定の
温度に保持されるようになっている。On the other hand, below each of the support rods 16 and above the water pipe 24, a liquid pipe 27 for feeding the culture solution, which extends parallel to the longitudinal direction of the cultivation case 2, is supported. Further, below the liquid passage pipes 27, a pair of liquid passage pipes 28 for feeding the culture solution are supported on each connecting rod 10, and extend parallel to the longitudinal direction of the cultivation case 2. One end of each tube 27, 28 is sealed, and the other end is led out from one end of the cultivation case 2. or,
Spray nozzles 29 are arranged at equal intervals on each pipe 27.2B for spraying the culture solution supplied to the intermediate pipes 27.28 into the inside of the cultivation case 2 in the form of a mist. Then, by the injection nozzle 29, the support hole 19a of the outer wall 19 is
A culture solution is sprayed and supplied to the roots R of the plant P fitted inside the cultivation case 2 from the culturing case 2. Further, one end of each liquid passage pipe 27, 28 led out to the outside of the cultivation case 2 is connected to a common liquid supply pipe 30 for supplying a culture solution. This liquid supply pipe 30 is connected to a liquid supply pump 31, and the operation of the pump 31 causes the culture liquid F stored in the culture liquid storage tank 32 to be supplied to the liquid passage pipes 27 and 28 through the liquid supply pipe 30. Ru. Incidentally, the liquid passage pipes 27, 28, the spray nozzle 29, etc. constitute a culture solution spraying means. The culture solution F in this case is a mixture of various fertilizer components in just the right amounts for spray cultivation of strawberries, and its concentration is appropriately set according to the growth stage of the strawberries. Further, a water pipe (not shown) is provided on the outer periphery of the culture solution storage tank 32, and groundwater W is supplied to the outer periphery of the storage tank 32 through the water pipe so that the culture solution is always maintained at a predetermined temperature. It has become.
前記通液管２８の下方において両基台７の間には、噴射
ノズル２９から植物体Ｐの根Ｒに噴霧供給され、滴り落
ちた培養液Ｆを回収するための培養液回収溝３３が基台
７の長手方向に沿って形成されている。この回収溝３３
にはその一端部に向かう緩傾斜が設けられ、傾斜下端部
には培養液回収溝３３にて回収された培養液Ｆを外部へ
導出するための導出管３４が配設され、間管３４の一端
が前記培養液貯留槽３２に接続されている。そして、培
養液回収溝３３にて回収され、その傾斜に基き導出管３
４まで移動した培養液Ｆは再び培養液貯留槽３２に回収
されて再利用されるようになっている。Below the liquid passage pipe 28, between both the bases 7, there is a culture solution collection groove 33 for collecting the culture solution F that is sprayed from the spray nozzle 29 to the roots R of the plant P and drips down. It is formed along the longitudinal direction of the stand 7. This collection groove 33
is provided with a gentle slope toward one end thereof, and a discharge pipe 34 for leading out the culture fluid F collected in the culture fluid collection groove 33 is provided at the lower end of the slope. One end is connected to the culture solution storage tank 32 . Then, the culture solution is collected in the culture solution collection groove 33, and based on the slope, the outlet pipe 3
The culture solution F that has moved up to 4 is collected again into the culture solution storage tank 32 and is reused.
又、培養液回収溝３３内には間溝３３に沿って延びるビ
ニール製の通水ダクト３５が配設されている。この通水
ダクト３５内に地下水Ｗを供給するために、同ダクト３
５の一端には導入管３６が接続され、その管３６の一端
は前記給水管２５に接続されでいる。又、通水ダクト３
５内の水を排出するために、同ダクト３５の他端には導
出管（図示略）が接続されている。そして、給水ポンプ
２６の動作に基き、地下水Ｗが通水ダクト３５内に供給
されることにより、通水ダクト３５を介し、栽培ケース
２内側下部の空気が地下水温に近い温度に保持される。Furthermore, a water flow duct 35 made of vinyl and extending along the groove 33 is disposed within the culture solution recovery groove 33 . In order to supply groundwater W into this water duct 35, the duct 3
An introduction pipe 36 is connected to one end of the pipe 5, and one end of the pipe 36 is connected to the water supply pipe 25. Also, water duct 3
In order to discharge the water in the duct 5, an outlet pipe (not shown) is connected to the other end of the duct 35. Based on the operation of the water supply pump 26, the groundwater W is supplied into the water duct 35, so that the air in the lower part of the inside of the cultivation case 2 is maintained at a temperature close to the groundwater temperature via the water duct 35.
又、噴射ノズル２９がら植物体Ｐの根Ｒに噴霧供給され
、滴り落ちた培養液Ｆは培養液回収溝３３内に回収され
る際に通水ダクト３５に接触して、地下水温に近い温度
に保持されるようになっている。尚、通水ダクト３５及
び前記通水管２４により植物体Ｐの根圏温度を調節する
ために媒体としての地下水Ｗを流通させる温度調節用通
路が構成されている。そして、この場合の地下水Ｗの水
温は年間を通じて略１４℃を維持するものである。In addition, the dripping culture solution F that is sprayed from the spray nozzle 29 to the roots R of the plant body P comes into contact with the water flow duct 35 when being collected into the culture solution collection groove 33, and the temperature approaches the groundwater temperature. It is designed to be held in Note that the water flow duct 35 and the water flow pipe 24 constitute a temperature adjustment passage through which groundwater W as a medium flows, in order to adjust the rhizosphere temperature of the plant body P. In this case, the temperature of the groundwater W is maintained at approximately 14° C. throughout the year.
更に、第１．３図に示すように、栽培ケース２の下部両
側には電力照明用電球３７が等間隔をもって配設され、
栽培ケース２の両側面を下側から照射するようになって
いる。そして、この電球３７により栽培ケース２上に支
持さた植物体Ｐの葉Ｌ（第４図参照）の裏面が照射され
るようになっている。尚、この電球３７による照射はイ
チゴの成育段階に応じて適宜に行われるものである。Furthermore, as shown in FIG. 1.3, electric lighting bulbs 37 are arranged at equal intervals on both sides of the bottom of the cultivation case 2.
Both sides of the cultivation case 2 are irradiated from below. The light bulb 37 illuminates the back surface of the leaves L (see FIG. 4) of the plant P supported on the cultivation case 2. Incidentally, the irradiation by the light bulb 37 is performed as appropriate depending on the growth stage of the strawberry.
次に、上記のように構成されたイチゴの栽培装置の作用
を説明する。Next, the operation of the strawberry cultivation apparatus configured as described above will be explained.
さて、この栽培装置を使用してイチゴの栽培を行うには
、予め苗床で育成されたイチゴの植物体Ｐを苗の段階で
栽培ケース２の両側面に支持する。Now, in order to cultivate strawberries using this cultivation device, strawberry plants P grown in advance in a nursery are supported on both sides of the cultivation case 2 at the stage of seedlings.
即ち、第４図に示すように、植物体Ｐの茎部Ｓをビニー
ルシート２１のスリット２１ａを介して支持孔１９ａに
嵌合支持し、根Ｒを外壁１９の内側に裸出させると共に
、葉りをビニールシート２１の外側に露出させる。この
状態では、植物体Ｐの葉りに太陽光が照射され得ると共
に、葉りの裏面には電球３７の光が照射され得る。That is, as shown in FIG. 4, the stem S of the plant P is fitted and supported in the support hole 19a through the slit 21a of the vinyl sheet 21, the roots R are exposed inside the outer wall 19, and the leaves are The material is exposed on the outside of the vinyl sheet 21. In this state, the leaves of the plant P can be irradiated with sunlight, and the back surfaces of the leaves can be irradiated with light from the light bulb 37.
次に、通水管２２．２４内及び通水ダクト３５内に予め
地下水Ｗを充填すると共に、通液管２７゜２８内に培養
液Ｆを予め充填する。この状態で、給水ポンプ２６を動
作させることにより、通水管２２内の地下水Ｗが噴射ノ
ズル２３がら直ちに噴霧されて植物体Ｐの葉り及び栽培
ケース２の外周に散布される。これにより、植物体Ｐの
葉り及び栽培ケース２を適宜に洗浄することができる共
に、ビニールハウス１内を適度に加湿することができる
。この結果、異常乾燥や異常湿潤による病害虫の発生を
未然に防止することができる。又、新しい地下水Ｗが通
水管２４及び通水ダクト３５に給送され、両者２４．３
５内の地下水Ｗが徐々に入れ換えられる。この結果、地
下水Ｗにより栽培ケース２内側の隅々まで適温に保持す
ることができる。即ち、栽培ケース２内側が高温の場合
には冷却され、低温の場合には加熱される。従って、植
物体Ｐの根圏温度を昼夜及び年間を通じて適温に保持す
ることができる。又、前記通水管２４及び通水ダクト３
５内の地下水Ｗにより、ハウス１内を間接的に適温（２
０〜２５℃）に保持することもできる。Next, the water passage pipes 22 and 24 and the water passage duct 35 are filled with underground water W, and the liquid passage pipes 27 and 28 are filled with culture solution F in advance. In this state, by operating the water supply pump 26, the groundwater W in the water pipe 22 is immediately sprayed from the injection nozzle 23 and sprayed onto the leaves of the plant P and the outer periphery of the cultivation case 2. Thereby, the leaves of the plant P and the cultivation case 2 can be appropriately washed, and the inside of the greenhouse 1 can be appropriately humidified. As a result, the occurrence of pests and diseases due to abnormal dryness or abnormal humidity can be prevented. In addition, new groundwater W is fed to the water pipe 24 and the water duct 35, and both are 24.3
The groundwater W within 5 is gradually replaced. As a result, every corner of the inside of the cultivation case 2 can be maintained at an appropriate temperature by the groundwater W. That is, when the inside of the cultivation case 2 is at a high temperature, it is cooled, and when the inside is at a low temperature, it is heated. Therefore, the rhizosphere temperature of the plant P can be maintained at an appropriate temperature day and night and throughout the year. In addition, the water pipe 24 and the water duct 3
The groundwater W in House 5 indirectly maintains the temperature inside House 1 at an appropriate temperature (2
It can also be maintained at a temperature of 0 to 25°C.
又、給液ポンプ３１を動作させることにより、通液管２
７．２８を介して噴射ノズル２９から直ちに培養液Ｆが
噴霧されて植物体Ｐの根Ｒに供給される。これにより、
植物体Ｐに肥料分及び水分が付与される。この時、根Ｒ
から滴り落ち、培養液回収溝３３にて回収される培養液
Ｆは通水ダクト３５に接触して地下水温に近い温度に保
持される。これにより、回収溝３３から貯留槽３２まで
の間を移動する培養液Ｆの温度変化を防止し、貯留槽３
２に回収される培養液Ｆの全体の温度変化を軽減するこ
とができる。この結果、噴射ノズル２９から植物体Ｐに
噴霧する培養液Ｆを常に適温に保持することができ、根
Ｒの肥料分の吸収不良を防止することができる。In addition, by operating the liquid supply pump 31, the liquid passage pipe 2
The culture solution F is immediately sprayed from the spray nozzle 29 via 7.28 and supplied to the roots R of the plant P. This results in
Fertilizer and moisture are applied to the plant P. At this time, root R
The culture fluid F that drips down and is collected in the culture fluid recovery groove 33 comes into contact with the water flow duct 35 and is maintained at a temperature close to the underground water temperature. This prevents temperature changes in the culture fluid F moving between the collection groove 33 and the storage tank 32, and
The overall temperature change of the culture solution F recovered in step 2 can be reduced. As a result, the culture solution F sprayed onto the plant P from the spray nozzle 29 can be maintained at an appropriate temperature at all times, and malabsorption of fertilizer by the roots R can be prevented.
続いて、以下にイチゴの栽培方法について述べる。Next, the strawberry cultivation method will be described below.
ｉｌｌ光の管理
花芽分化前の場合には、午前６時〜午前１０時及び午１
＆３時〜午後６時の間は遮光網５．６により太陽光を遮
断しない全光条件とし、午前１０時〜午後３時の間は遮
光網５．６により太陽光の一部を遮断する遮光条件とす
る。曇天時には、前記全光条件下において電球３７によ
り捕捉的な照明を行う。Ill light management Before flower bud differentiation, from 6:00 a.m. to 10:00 a.m. and 1:00 p.m.
& Between 3:00 and 6:00 pm, there is a full light condition in which sunlight is not blocked by the shading net 5.6, and between 10:00 am and 3:00 pm, a shading condition is set in which a part of the sunlight is blocked by the shading net 5.6. On cloudy days, the light bulb 37 provides selective illumination under the full light conditions.
花芽分化後の場合には、昼間は遮光網５．６により太陽
光を遮断しない全光条件とし、夜間は電球３７により１
時間中に１０分の割合で照明を行う。After flower bud differentiation, full light conditions are established in the daytime without blocking sunlight using the shading net 5.6, and at night the light bulb 37 is used to provide full light conditions.
Lighting is performed at a rate of 10 minutes during the time.
（２）培養液の管理
花芽分化前の場合には、昼間５分間中に１．５分間、夜
間１０分間中に１．５分間の割合で培養液Ｆを供給する
。培養液Ｆの濃度をＥＣ（電気伝導度） ０．２〜０．
３１１１Ｓ／ｅ１１とする。(2) Management of culture solution Before flower bud differentiation, culture solution F is supplied for 1.5 minutes in 5 minutes during the day and 1.5 minutes in 10 minutes at night. The concentration of culture solution F is EC (electrical conductivity) 0.2 to 0.
3111S/e11.
花芽分化後の場合には、供給時間は花芽分化前と同じで
、培養液Ｆの濃度をＥ Ｃ０，５〜０．７ｍＳ／口とす
る。After flower bud differentiation, the feeding time is the same as before flower bud differentiation, and the concentration of culture solution F is EC0.5 to 0.7 mS/mouth.
（３）根圏温度の管理
花芽分化前後共に１時間中に３〜５分間の割合で通水管
２４及び通水ダクト３５に地下水Ｗを供給し、栽培ケー
ス２内の根圏温度を昼間略２０〜２５℃、夜間時１４〜
１６℃とする。(3) Management of rhizosphere temperature Groundwater W is supplied to the water pipe 24 and the water duct 35 at a rate of 3 to 5 minutes per hour both before and after flower bud differentiation, and the rhizosphere temperature inside the cultivation case 2 is kept at approximately 20°C during the daytime. ~25℃, 14~ at night
The temperature shall be 16°C.
一般にイチゴの花芽分化は短日及び低温（特に根圏の低
温）で促進される。従って、前記花芽分化前の光の管理
により短日条件が成立し、前記根圏温度の管理により低
温条件が成立する。この結果、植物体Ｐの花芽分化を促
進して短期間で花芽を形成させることができる。In general, flower bud differentiation in strawberries is promoted by short days and low temperatures (especially low temperatures in the rhizosphere). Therefore, short-day conditions are established by controlling the light before flower bud differentiation, and low-temperature conditions are established by controlling the rhizosphere temperature. As a result, flower bud differentiation of the plant P can be promoted and flower buds can be formed in a short period of time.
又、一般にイチゴの花芽の発育は長日で促進される。従
って、前記花芽分化後の光の管理により長日条件が成立
し、分化した花芽の発育を促進して短期間で花芽を開花
させることができる。Furthermore, the development of strawberry flower buds is generally promoted by long days. Therefore, by controlling the light after flower bud differentiation, long-day conditions can be established, the development of differentiated flower buds can be promoted, and the flower buds can bloom in a short period of time.
開花後はミツバチによる受粉等を行い花の結実を促進す
る。After flowering, bees pollinate the flowers to promote fruit formation.
上記のように、この実施例では、花芽分化の促進及び花
芽発育の促進を行うことができるので、年間を通じて複
数回の結実を実現することができる。As described above, in this example, flower bud differentiation and flower bud development can be promoted, so fruiting can be achieved multiple times throughout the year.
又、この実施例では、栽培ケース２内側にｌｌＲが裸出
しているので酸素要求量の大きいイチゴの根Ｒに充分な
酸素を供給して、植物体Ｐの成育を促進することができ
る。更に、前記培養液の管理により培養液Ｆが適時根Ｒ
に噴霧供給されるので、肥料不足を生じさせることがな
く、根圏の湿度を充分な状態に保持してＩＩＲの乾燥を
防止することもできる。この結果、根Ｒの老化を防止す
ることができると共に、−次相の発生及び伸長を促進す
ることができる。Furthermore, in this embodiment, since the LL is exposed inside the cultivation case 2, sufficient oxygen can be supplied to the strawberry roots R, which have a large oxygen demand, and the growth of the plant P can be promoted. Furthermore, by controlling the culture solution mentioned above, the culture solution F can be applied to the roots R in a timely manner.
Since the fertilizer is supplied by spraying, there is no shortage of fertilizer, and it is possible to maintain sufficient humidity in the rhizosphere to prevent IIR from drying out. As a result, aging of the root R can be prevented, and the generation and elongation of the second phase can be promoted.
更に、この実施例では、根圏温度を均一かつ適温に保持
することができるので、根Ｒの培養液吸収不良を防止し
、植物体Ｐの生理障害（チップバーン、異常孔等）を未
然に防止することができる。Furthermore, in this embodiment, the rhizosphere temperature can be maintained at a uniform and appropriate temperature, thereby preventing malabsorption of the culture medium by the roots R and preventing physiological disorders of the plant P (chip burn, abnormal holes, etc.). It can be prevented.
このように、植物体Ｐを健全に育成できるので、植物体
Ｐの耐用寿命を延ばし、同一固体による複数年の果実収
穫を行うことができる。この結果、毎年の苗生産を省略
してその経費を削減することができる。In this way, since the plant P can be grown in a healthy manner, the useful life of the plant P can be extended, and fruit can be harvested from the same individual for multiple years. As a result, annual seedling production can be omitted and costs can be reduced.
又、根圏温度保持のための構成は、単に通水管２４及び
通水ダクト３５を栽培ケース２内に配設して地下水Ｗを
給送するだけなので、施工が容易で維持費用の軽減も可
能となる。In addition, the configuration for maintaining the root zone temperature is simply by arranging the water pipe 24 and water duct 35 inside the cultivation case 2 to feed groundwater W, so construction is easy and maintenance costs can be reduced. becomes.
尚、この発明は前記実施例に限定されるものではなく、
例えば栽培ケース２の形状を断面三角形状に構成したり
、通水管２４、通水ダクト３５及び通液管２７．２８の
数を増減したり、イチゴ以外の植物の栽培に適用したり
、通水管２４及び通水ダクト３５に温泉を供給して熱帯
性の植物栽培等に適用したりする等、発明の趣旨を逸脱
しない範囲において構成の一部を適宜に変更して実施す
ることもできる。Note that this invention is not limited to the above embodiments,
For example, the shape of the cultivation case 2 may be configured to have a triangular cross section, the number of water pipes 24, water ducts 35, and liquid pipes 27, 28 may be increased or decreased, the cultivation case may be adapted to the cultivation of plants other than strawberries, A part of the configuration can be changed as appropriate without departing from the spirit of the invention, such as supplying hot spring water to the water flow ducts 24 and 35 for application to tropical plant cultivation, etc.
発明の効果
以上詳述したようにこの発明によれば、簡単な構成によ
り植物体の特性に応じた根圏温度の調節を行うことがで
き、植物体の成育を促進することができるという優れた
効果を発揮する。Effects of the Invention As detailed above, this invention has the advantage of being able to adjust the rhizosphere temperature according to the characteristics of the plant with a simple configuration and promoting the growth of the plant. be effective.
第１図はこの発明を具体化した噴霧式栽培装置全体を示
す部分破断図、第２図は噴霧式栽培装置の要部を示す部
分破断斜視図、第３図は噴霧式栽培装置全体を示す斜視
図、第４図は植物体の支持状態を示す部分破断図である
。第５図は従来例を示す部分破断斜視図、第６図は同じ
〈従来例を示す部分破断図である。
２・・・栽培ケース、１９．２０・・・外壁、１９ａ・
・・支持孔、２４・・・通水管、３５・・・通水ダクト
（２４゜３５は温度調節用通路を構成している）、２７
゜２８・・・通液管、２９・・・噴射ノズル（２７〜２
９は培養液噴霧手段を構成している）、Ｆ・・・培養液
、Ｐ・・・植物体、Ｒ・・・根、Ｗ・・・地下水。Fig. 1 is a partially cutaway view showing the entire spray cultivation device embodying the present invention, Fig. 2 is a partially cutaway perspective view showing the main parts of the spray cultivation device, and Fig. 3 shows the entire spray cultivation device. The perspective view and FIG. 4 are partially cutaway views showing the supported state of the plant body. FIG. 5 is a partially cutaway perspective view showing a conventional example, and FIG. 6 is a partially cutaway view showing the same conventional example. 2...Cultivation case, 19.20...Outer wall, 19a.
...Support hole, 24...Water pipe, 35...Water duct (24°35 constitutes a temperature control passage), 27
゜28...Liquid passage pipe, 29...Injection nozzle (27-2
9 constitutes a culture solution spraying means), F...Culture solution, P...Plant, R...Root, W...Groundwater.
Claims (1)
物体（Ｐ）を支持する複数の支持孔（１９ａ）を備えた
外壁（１９、２０等）よりなる中空状の栽培ケース（２
）と、 前記栽培ケース（２）の内側に配設され、前記根（Ｒ）
に培養液（Ｆ）を噴霧供給する培養液噴霧手段（２７、
２８、２９等）と、 前記栽培ケース（２）の内側に配設され、植物体（Ｐ）
の根圏温度を調節するために所定温度の媒体（Ｗ）を流
通させる温度調節用通路（２４、３５）と を備えたことを特徴とする噴霧式栽培装置。[Claims] 1. From an outer wall (19, 20, etc.) provided with a plurality of support holes (19a) that support the plant (P) with the roots (R) of the plant (P) inserted inside. A hollow cultivation case (2
), disposed inside the cultivation case (2), and the root (R)
A culture solution spraying means (27,
28, 29, etc.) arranged inside the cultivation case (2), and the plant (P)
A spray-type cultivation device characterized by comprising a temperature adjustment passageway (24, 35) through which a medium (W) of a predetermined temperature flows in order to adjust the root zone temperature of the plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62154203A JPH0734696B2 (en) | 1987-06-20 | 1987-06-20 | Spray type cultivation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62154203A JPH0734696B2 (en) | 1987-06-20 | 1987-06-20 | Spray type cultivation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63317029A true JPS63317029A (en) | 1988-12-26 |
| JPH0734696B2 JPH0734696B2 (en) | 1995-04-19 |
Family
ID=15579096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62154203A Expired - Lifetime JPH0734696B2 (en) | 1987-06-20 | 1987-06-20 | Spray type cultivation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0734696B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998056237A1 (en) * | 1997-06-11 | 1998-12-17 | Consulagri S.R.L. | Modular structure for aeroponic cultivations |
| US7832144B2 (en) * | 2006-12-21 | 2010-11-16 | Marie-Christine Steffanetti | Hydroponic growing system |
| KR101951702B1 (en) * | 2017-12-14 | 2019-05-20 | 현대로오텍(주) | An automatic temperature contol system for a greenhouse using temperature differential of inside and outside |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013184224A1 (en) | 2012-06-08 | 2013-12-12 | Living Greens Farm, Inc. | Irrigation system |
| US20140137472A1 (en) | 2012-06-08 | 2014-05-22 | Living Greens Farm, Inc. | Controlled environment and method |
| WO2015200862A1 (en) | 2014-06-26 | 2015-12-30 | Living Greens Farm, Inc. | Grow board and method |
| TWI605753B (en) | 2014-07-31 | 2017-11-21 | 生活綠農場公司 | Growing system |
| US11350576B2 (en) | 2014-07-31 | 2022-06-07 | Living Greens Farm, Inc. | Growing system |
| US11678621B2 (en) | 2018-03-31 | 2023-06-20 | Living Greens Farm, Inc. | Growing system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59110561U (en) * | 1983-01-17 | 1984-07-25 | 株式会社みかど育種農場 | hydroponic cultivation equipment |
| JPS61281025A (en) * | 1985-06-04 | 1986-12-11 | Sumitomo Electric Ind Ltd | Production of deposited material of glass fine particles |
-
1987
- 1987-06-20 JP JP62154203A patent/JPH0734696B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59110561U (en) * | 1983-01-17 | 1984-07-25 | 株式会社みかど育種農場 | hydroponic cultivation equipment |
| JPS61281025A (en) * | 1985-06-04 | 1986-12-11 | Sumitomo Electric Ind Ltd | Production of deposited material of glass fine particles |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998056237A1 (en) * | 1997-06-11 | 1998-12-17 | Consulagri S.R.L. | Modular structure for aeroponic cultivations |
| US6021602A (en) * | 1997-06-11 | 2000-02-08 | Consulagri S.R.L. | Modular structure for aeroponic cultivations |
| US7832144B2 (en) * | 2006-12-21 | 2010-11-16 | Marie-Christine Steffanetti | Hydroponic growing system |
| KR101951702B1 (en) * | 2017-12-14 | 2019-05-20 | 현대로오텍(주) | An automatic temperature contol system for a greenhouse using temperature differential of inside and outside |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0734696B2 (en) | 1995-04-19 |
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