WO2014196521A1 - 土壌用水分インジケータ - Google Patents
土壌用水分インジケータ Download PDFInfo
- Publication number
- WO2014196521A1 WO2014196521A1 PCT/JP2014/064716 JP2014064716W WO2014196521A1 WO 2014196521 A1 WO2014196521 A1 WO 2014196521A1 JP 2014064716 W JP2014064716 W JP 2014064716W WO 2014196521 A1 WO2014196521 A1 WO 2014196521A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- main body
- soil
- opening
- water absorption
- Prior art date
Links
- 239000002689 soil Substances 0.000 title claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 129
- 238000010521 absorption reaction Methods 0.000 claims abstract description 35
- 238000001514 detection method Methods 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 27
- 239000011358 absorbing material Substances 0.000 claims abstract description 22
- 230000005068 transpiration Effects 0.000 claims description 23
- 239000002250 absorbent Substances 0.000 claims description 13
- 229920000742 Cotton Polymers 0.000 claims description 12
- 230000002745 absorbent Effects 0.000 claims description 12
- 239000004744 fabric Substances 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 238000001035 drying Methods 0.000 abstract description 5
- 235000019646 color tone Nutrition 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 241000196324 Embryophyta Species 0.000 description 10
- 239000011148 porous material Substances 0.000 description 6
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 4
- 238000004061 bleaching Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012966 insertion method Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 239000003755 preservative agent Substances 0.000 description 2
- 230000002335 preservative effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
- G01N33/246—Earth materials for water content
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/10—Measuring moisture content, e.g. by measuring change in length of hygroscopic filament; Hygrometers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
- G01N31/222—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators for investigating moisture content
-
- 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
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/16—Control of watering
- A01G25/167—Control by humidity of the soil itself or of devices simulating soil or of the atmosphere; Soil humidity sensors
Definitions
- the present invention relates to a soil water indicator that indicates the timing of watering to maintain soil water content suitable for plant growth.
- an indicator for displaying the amount of water has been proposed.
- an electronic soil humidity measuring device for plants see, for example, Patent Document 1 that measures the humidity of soil based on a change in electrical resistance of a soil humidity sensing unit, or a liquid absorbing state so as to be in contact with a water absorbing material having water absorption.
- An indicator (see, for example, Patent Document 2) has been proposed in which a porous layer having different transparency in the non-liquid absorbing state is provided and the color is changed according to the amount of water in the soil.
- measuring instruments called pF meters are commercially available, but it is necessary to read the indicated numerical values as well as the one shown in Patent Document 1, and the cost is high, so it is easy. It can not be used.
- the degree of soil wetness is represented by a value called "pF value".
- This pF value is a unit of pressure that represents the degree to which the water in the soil is being attracted by the capillary force of the soil. In soils that contain enough water, the pF value decreases, indicating that plant roots are prone to water uptake. On the contrary, when the soil dries up, the pF value becomes high, and a high force is needed to suck up the water. In the case of upland, the pF value is usually 1.5 to 2.7 (growth effective water) below which water is excessive and above which water is insufficient.
- the stress-free pF value of plants is in the range of pF 1.7 to 2.3 although there is a difference in the varieties of plants to be grown. For this reason, the indicator should indicate that the soil is too dry when the appropriate pF value is exceeded depending on the plant.
- the electronic soil humidity measuring device for plants uses an electric means for measuring the moisture content, and therefore a battery is required, and when the battery runs out, the measurement can not be performed, and the display is displayed. It becomes impossible.
- the water content can not be known without reading the digital display, it is not possible to easily know the degree of dryness of the soil and the necessity of watering.
- the indicator of patent document 2 although a battery becomes unnecessary, it is difficult to adjust the moisture content (pF value) which a change of color produces to the appropriate value according to the kind of plant to grow.
- the problem to be solved is to make it possible to visualize that the soil has dried to the desired degree and to inform the user.
- the moisture indicator for soil of the present invention is formed hollow from a material which does not transmit water, and is a water absorption opening disposed in the vicinity of one end in the longitudinal direction, a transpiration opening disposed in the vicinity of the other end, and the like
- a main body portion provided with a display portion provided in the vicinity of an end and capable of visualizing a hollow interior, a water absorbing material filled from the water absorption opening to the display portion at least inside the main body portion, and
- a water detection sheet is disposed to cover the water absorbing material at the position of the display unit, and the color tone changes depending on the water absorption state and the dry state.
- the water absorbent material is preferably formed of a cotton cloth from which oil is removed. As a result, it is possible to enhance the water absorption by capillary action and to function as an indicator even in a long main body. In order to remove the oil of cotton, it is good to carry out the refinement bleaching process enough.
- the transpiration opening is formed on the side surface of the main body. This can prevent water from entering the interior of the main body through the transpiration opening when watering.
- At least a part of the transpiration opening is provided on the other end side of the display unit.
- the moisture to be evaporated passes through the display unit, so that the display by the indicator can be stabilized.
- the water absorption opening is preferably formed on the side surface of the main body.
- the soil can be prevented from being pushed into the inside of the main body when inserted into the soil, and the contact condition between the water absorption opening and the soil can be prevented from changing depending on the insertion method.
- the main body portion is preferably formed of a resin material. It prevents deterioration due to the action of moisture and microorganisms in the soil, enabling repeated use over a long period of time.
- the soil moisture indicator of the present invention it can be visualized and easily informed that the soil has dried to the desired degree.
- the external view of the moisture indicator 1 for soils is shown.
- the cross section of the moisture indicator 1 for soils is shown.
- FIG. 1 shows an external view of the soil moisture indicator 1
- FIG. 2 shows a cross-sectional view of the soil moisture indicator 1.
- the soil water indicator 1 includes a main body 2, a water absorbent material 3, and a water detection sheet 4.
- the main body 2 is formed hollow (for example, in a cylindrical shape) of a material that does not allow water to pass through.
- the main body 2 may be a plastic such as ABS resin, or any material such as metal which does not permeate water if it does not permeate water, but is preferably a material that does not deteriorate due to the action of moisture or microorganisms in the soil, ABS resin is preferred in this respect.
- a water absorption opening 5 is provided on the side surface near one end in the longitudinal direction of the main body 2.
- the shape of the water absorption opening 5 is an elliptical shape, but the shape of the opening is not limited to this.
- the size of the opening is adjusted to a size sufficient to absorb water from the soil.
- a plurality of water absorption openings 5 may be provided. For example, as shown in FIG. 2, two openings may be provided at different positions in the longitudinal direction and the outer circumferential direction of the main body 2.
- a display portion 6 formed so as to allow visual recognition of the inside of the hollow main body portion 2 is provided.
- the display unit 6 is preferably formed of a transparent material, but the presence or absence of color and transparency may be determined as long as a change in the color tone of the water detection sheet 4 disposed inside the main unit 2 can be confirmed.
- the portion of the main body 2 excluding the display 6 may have any color or may be transparent. It is preferable that the display unit 6 is formed to be visible (for example, transparent) inside the entire circumference of the main body unit 2. Thereby, the color tone of the water detection sheet 4 can be confirmed regardless of the viewing angle.
- the water absorbing material 3 is filled in at least a portion from the water absorption opening 5 to the display unit 6 in the space inside the main body 2.
- the water absorbing material 3 sucks the moisture in the soil against the gravity to the height of the display unit 6 by capillary action.
- the water absorbing material 3 is fully removed from the oil.
- cotton wax which is an oil component contained in cotton can be removed by performing a refinement bleaching process on cotton.
- the bacteria By impregnating the water absorbent 3 with a preservative and drying it, the bacteria may be prevented from propagating inside the water absorbent 3 at the time of use.
- the water absorbing power of the water absorbing material 3 is changed by infiltrating the preservative, the water absorbing opening 5 or the water absorbing opening 5 is provided to offset the change in the water absorbing power and to change the color tone of the water detection sheet 4 at a desired pF value.
- the position, size, etc. of the transpiration opening 7 may be adjusted.
- a guide wire 8 is provided on the side surface of the main body 2 as a measure of the depth to be inserted into the soil.
- the guide line 8 is provided at a position of about 5 cm from the water absorption opening 5 in the direction of the end where the transpiration opening 7 is provided, and the soil water indicator 1 is to a depth where the guide line 8 substantially matches the surface of the soil It is used in the inserted state. In the use state, the water absorbing material 3 exposed from the water absorption opening 5 sucks up the water in the soil.
- a water detection sheet 4 is disposed on the portion of the display unit 6 in the main body unit 2 so as to cover the water absorbent material 3.
- the water detection sheet 4 is a sheet-like material containing hydrochromic ink.
- the color tone changes between the water absorption state and the dry state. That is, the water detection sheet 4 is different between when the soil is sufficiently moist and the water absorbing material 3 absorbs moisture and is wet, and when the soil is dried and the water absorbing material 3 is accordingly dried as well. It shows a color tone.
- the color tone clearly changes between the water absorption state and the dry state, as in the case of an ink which exhibits a color tone such as white upon drying and red and blue upon water absorption.
- the change in color tone can be observed from the display unit 6.
- the water detection sheet 4 covers the entire visible range of the water absorbent material 3 from the display unit 6 It is preferable to cover all over.
- paper or cloth can be used as the sheet-like material forming the water detection sheet 4, but the sheet-like material is not retained as it is when the water-absorbent material 3 is in a dry state. It is preferable that the material is inferior in hydraulic force, and it is preferable to have sufficient durability. Moreover, it is preferable that the water detection sheet 4 is a raw material which a hydrochromic ink tends to fix.
- the water detection sheet 4 is a raw material which a hydrochromic ink tends to fix.
- cotton from which oil is removed for example, a non-woven fabric, a cotton cloth with more cotton wax than the water absorbing material 3, T / C broad (as a sheet-like material forming the water detection sheet 4 It is preferable to use a broad fabric) or the like by co-spinning of cotton and polyester.
- a transpiration opening 7 is provided on the side near the other end of the main body 2.
- the transpiration opening 7 may be provided only at a position on the other end side of the display unit 6 or only at a position on one end side of the display unit 6 (that is, the end where the water absorption opening 5 is provided). Although it may be provided, in the present example, the transpiration openings 7 are provided on both sides of the display unit 6.
- the transpiration opening 7 may be provided as a plurality of pores, and the pF value at which the color tone changes depending on the number of pores can be set. In the example shown in FIG. 1, the shape of the transpiration opening 7 is circular, but the shape of the opening is not limited to this.
- the tips on both sides of the main body 2 are sealed with a moisture-impermeable material such as ABS resin.
- a moisture-impermeable material such as ABS resin.
- the main body portion 2 preferably has a total length of 5 to 40 cm so that the display portion 6 is exposed from the edge of the container such as a flower pot in the use state.
- the outer diameter is preferably about 5 to 10 mm in order to facilitate insertion into the soil, and the inner diameter is preferably about 4 to 8 mm in order to have sufficient strength.
- the main body portion 2 may be made by any method as long as it is finally formed into the structure as described above, for example, it may be formed by processing a tubular material, or a tubular member in the longitudinal direction
- the water absorbent material 3 may be placed in a half-divided member and then joined.
- the pF value at which the soil moisture indicator 1 shows a color tone change can be adjusted by various parameters. For example, it is possible to adjust the drying speed of the water absorbent material 3 by the size of the cross-sectional area of the transpiration opening 7, and thereby, it is possible to adjust the pF value at which the color tone change of the water detection sheet 4 occurs. Specifically, if the cross-sectional area of the transpiration opening 7 is increased, the water absorbing material 3 dries more quickly, so the pF value showing the color tone change is reduced (that is, it does not react if there is not much water in the soil) It can be adjusted. Forming the transpiration opening 7 as a plurality of pores is preferable in that the pF value indicating color tone change can be adjusted by the number of pores.
- the pF value showing the color tone change depending on the length of the main body 2 in particular, the length from the water absorption opening 5 to the display portion 6
- the inner diameter, and the cross sectional area of the water absorption opening 5 It can be adjusted.
- the soil water indicator 1 is used by inserting one end provided with the water absorption opening 5 into the soil.
- the water absorbent material 3 exposed from the water absorption opening 5 tends to absorb moisture in the soil by capillary action.
- the water absorbing material 3 becomes wet to the vicinity of the display unit 6, and the water detection sheet 4 covering the display unit 6 reacts to moisture to absorb water. It becomes a color tone.
- the water detection sheet 4 covering the display 6 has a dry color tone.
- the change in color when the soil is dry allows the soil moisture indicator 1 to indicate to the user the dryness of the soil.
- the soil water indicator 1 can be used over and over again while transitioning between a water absorption state and a dryness state depending on watering and soil dryness.
- Example 1 The soil moisture indicator 1 was prepared under the following conditions. As the main body 2, using a transparent ABS resin tube with an outer diameter of 6 mm, an inner diameter of 4 mm, a tube wall thickness of 1 mm, and a total length of 15 cm, scraping the wall of one end of the tube The openings 5 were provided, and eight pores (.phi. 2 mm) as the openings 7 for transpiration were provided at the other end of the tube on each side of the position to be the display section 6 (total of 16).
- the water detection sheet 4 was prepared in advance by applying a hydrochromic ink showing a red color in the water absorption state and a white color in the dry state on a white T / C broad fabric.
- the water absorbent material 3 and the water detection sheet 4 were inserted into the tube of the main body 2 and both ends of the main body 2 were sealed.
- the soil moisture indicator 1 described above was inserted into a flower pot growing Pallsenrose. At this time, the water absorption opening 5 was positioned at a depth of about 5 cm from the soil surface. Also, in order to accurately measure the pF value at which the soil moisture indicator 1 causes a color tone change, a pF meter was also inserted. When water was poured into the bowl in this state, the water detection sheet 4 turned red. Thereafter, it was left without watering, and the reading of the pF meter was confirmed when the color tone of the water detection sheet 4 changed to white. When the above watering and standing were repeated, the pF value at which the color tone of the water detection sheet 4 changed to white was 2.1 to 2.2.
- Example 2 The soil moisture indicator 1 was prepared in the same manner as in Example 1 except that the number of pores ( ⁇ 2 mm) as the transpiration opening 7 was changed to four (eight in total) on both sides of the position to be the display portion 6. .
- the pF value at which the color tone of the water detection sheet 4 changed to white was 2.6.
- the moisture indicator for soil of the present invention the moisture content of the soil can be visualized with good reproducibility as the color tone change of the water detection sheet 4.
- the moisture indicator for soil of the present invention can be used to cultivate various plants because it can be easily visually confirmed that the soil has a desired degree of dryness simply by inserting it into a soil such as a flowerpot or a planter.
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Abstract
Description
以下の条件により土壌用水分インジケータ1を作成した。
本体部2として、外形φ6mm、内径φ4mm、管の壁厚1mm、全長15cmの、透明のABS樹脂管を用い、管の一端の壁面を削って長径約15mm、短2mmの略楕円形の吸水用開口5を設け、管の他端には蒸散用開口7としての細孔(φ2mm)を表示部6となる位置の両側に各8個(合計16個)設けた。吸水材3として精錬漂白加工を行い油分を取り除いた綿布を捩って棒状にしたものを用意し、本体部2の管内に挿入したときに表示部6から見える位置を、水検出シート4で覆った。水検出シート4は、白色のT/Cブロード布地に、吸水状態で赤、乾燥状態で白の色調を示すハイドロクロミックインクを塗布することで予め作成した。この吸水材3と水検出シート4を本体部2の管内に挿入し、本体部2の両端を封止した。
蒸散用開口7としての細孔(φ2mm)の数を表示部6となる位置の両側に各4個(合計8個)とした以外は、実施例1と同様に土壌用水分インジケータ1を作成した。実施例1と同様に水遣りと放置を繰り返したところ、水検出シート4の色調が白色に変化するpF値は2.6であった。
2 本体部
3 吸水材
4 水検出シート
5 吸水用開口
6 表示部
7 蒸散用開口
8 案内線
Claims (6)
- 水を透過しない材質により中空に形成され、長手方向における一端の近傍に配置された吸水用開口、他端の近傍に配置された蒸散用開口、及び前記他端の近傍に設けられ中空の内部を視認可能に形成された表示部を有する本体部と、
前記本体部の内部において、少なくとも前記吸水用開口から前記表示部まで充填された吸水材と、
前記本体部の内部の前記表示部の位置において前記吸水材を覆って配置され、吸水状態と乾燥状態とで色調が変化する水検出シートと
を備える土壌用水分インジケータ。 - 前記吸水材は、油分を取り除いた綿布により形成されることを特徴とする請求項1に記載の土壌用水分インジケータ。
- 前記蒸散用開口は、前記本体部の側面に形成されることを特徴とする請求項1または2に記載の土壌用水分インジケータ。
- 前記蒸散用開口の少なくとも一部は、前記表示部よりも前記他端側に設けられることを特徴とする請求項1から3のいずれか1項に記載の土壌用水分インジケータ。
- 前記吸水用開口は、前記本体部の側面に形成されることを特徴とする請求項1から4のいずれか1項に記載の土壌用水分インジケータ。
- 前記本体部は樹脂素材により形成されることを特徴とする請求項1から5のいずれか1項に記載の土壌用水分インジケータ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020157036034A KR101639967B1 (ko) | 2013-06-06 | 2014-06-03 | 토양용 수분 인디케이터 |
US14/895,130 US20160123867A1 (en) | 2013-06-06 | 2014-06-03 | Soil moisture indicator |
EP14808440.3A EP3006936A4 (en) | 2013-06-06 | 2014-06-03 | SOIL MOISTURE INDICATOR |
CN201480038140.6A CN105358973A (zh) | 2013-06-06 | 2014-06-03 | 土壤用水分指示器 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2013-003209U | 2013-06-06 | ||
JP2013003209 | 2013-06-06 | ||
JP2013152916A JP5692826B2 (ja) | 2013-06-06 | 2013-07-23 | 土壌用水分インジケータ |
JP2013-152916 | 2013-07-23 |
Publications (1)
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WO2014196521A1 true WO2014196521A1 (ja) | 2014-12-11 |
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PCT/JP2014/064716 WO2014196521A1 (ja) | 2013-06-06 | 2014-06-03 | 土壌用水分インジケータ |
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US (1) | US20160123867A1 (ja) |
EP (1) | EP3006936A4 (ja) |
JP (1) | JP5692826B2 (ja) |
KR (1) | KR101639967B1 (ja) |
CN (1) | CN105358973A (ja) |
WO (1) | WO2014196521A1 (ja) |
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JP2018014985A (ja) * | 2016-07-25 | 2018-02-01 | 裕人 吉添 | 植木鉢及び水やり時期判定方法 |
CN106770271B (zh) * | 2017-01-24 | 2023-09-05 | 浙江工业大学 | 一种简易测量含水率的装置 |
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JP7231938B2 (ja) * | 2017-09-08 | 2023-03-02 | キャビノチェ株式会社 | 土壌用水分インジケータ、土壌用水分インジケータに用いられる水検出ユニット、本体ケース、水検出ユニットの製造方法、及び土壌用水分インジケータの製造方法 |
CN110890015A (zh) * | 2018-09-09 | 2020-03-17 | 迈博高分子材料(宁波)有限公司 | 一种吸液指示部件和液体检测装置 |
CN109490506B (zh) * | 2018-10-15 | 2021-06-01 | 华北水利水电大学 | 一种土壤水分监测装置及其监测方法 |
KR102233827B1 (ko) * | 2019-06-14 | 2021-03-30 | 대명물산 주식회사 | 수분공급시기 표시장치 |
US20220349821A1 (en) * | 2021-04-30 | 2022-11-03 | Austin Peters | Indicator for soil moisture content |
CN113940259A (zh) * | 2021-09-09 | 2022-01-18 | 姬翠娥 | 一种塑料纤维渗灌管 |
USD1024816S1 (en) * | 2024-01-25 | 2024-04-30 | Xinhua Tan | Soil meter |
USD1024817S1 (en) * | 2024-02-01 | 2024-04-30 | Yanhao Song | Water quality detector |
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JP3136622U (ja) | 2007-08-22 | 2007-11-01 | パイロットインキ株式会社 | 土壌用可逆性水分インジケーター |
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CN100437095C (zh) * | 1999-12-22 | 2008-11-26 | 株式会社荏原制作所 | 营养液栽培装置 |
JP2002340886A (ja) * | 2001-05-11 | 2002-11-27 | Shunan Chiiki Jiba Sangyo Shinko Center | 簡易土壌水分計 |
US7931701B2 (en) | 2002-12-27 | 2011-04-26 | Hbi Branded Apparel Enterprises, Llc | Composition for dyeing of cellulosic fabric |
JP2006098285A (ja) * | 2004-09-30 | 2006-04-13 | Pilot Ink Co Ltd | 土壌用可逆性水分インジケーター |
US20070157702A1 (en) * | 2006-01-10 | 2007-07-12 | Masatami Hamada | Humidity indicator labels |
JP4840803B2 (ja) * | 2006-01-18 | 2011-12-21 | 独立行政法人農業・食品産業技術総合研究機構 | 低水分領域における土壌水分測定方法及び測定装置 |
CA2664623A1 (en) * | 2006-09-27 | 2008-04-03 | Luvgear Inc. | Device and method for identifying a change in a predetermined condition |
GB0919158D0 (en) * | 2009-11-02 | 2009-12-16 | Onslow Leigh M The Viscountess | Multi-function monitor |
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2013
- 2013-07-23 JP JP2013152916A patent/JP5692826B2/ja active Active
-
2014
- 2014-06-03 WO PCT/JP2014/064716 patent/WO2014196521A1/ja active Application Filing
- 2014-06-03 KR KR1020157036034A patent/KR101639967B1/ko active IP Right Grant
- 2014-06-03 CN CN201480038140.6A patent/CN105358973A/zh active Pending
- 2014-06-03 US US14/895,130 patent/US20160123867A1/en not_active Abandoned
- 2014-06-03 EP EP14808440.3A patent/EP3006936A4/en not_active Withdrawn
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JPS5197494A (ja) * | 1975-02-12 | 1976-08-27 | ||
JPS5250792U (ja) * | 1975-10-09 | 1977-04-11 | ||
JPS5336381U (ja) * | 1976-09-03 | 1978-03-30 | ||
JPS63175851U (ja) * | 1987-05-02 | 1988-11-15 | ||
JPH0915237A (ja) * | 1995-06-30 | 1997-01-17 | Hama Denshi:Kk | 水分検知器 |
JP3070450U (ja) | 1999-05-25 | 2000-08-04 | 義孝 佐野 | 植物用電子土湿度計測方式と装置 |
JP3136622U (ja) | 2007-08-22 | 2007-11-01 | パイロットインキ株式会社 | 土壌用可逆性水分インジケーター |
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CN113229114A (zh) * | 2021-06-07 | 2021-08-10 | 塔里木大学 | 一种沙漠公路防护林滴灌装置 |
Also Published As
Publication number | Publication date |
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EP3006936A1 (en) | 2016-04-13 |
EP3006936A4 (en) | 2016-08-03 |
KR20160004398A (ko) | 2016-01-12 |
JP2014238381A (ja) | 2014-12-18 |
CN105358973A (zh) | 2016-02-24 |
KR101639967B1 (ko) | 2016-07-14 |
JP5692826B2 (ja) | 2015-04-01 |
US20160123867A1 (en) | 2016-05-05 |
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