JPH08317735A - Covering material for controlling plant growth - Google Patents

Abstract

PURPOSE: To obtain readily handleable practical covering material for controlling plant growth useful for protected horticulture using natural light by specifying the ratio of red light/far red light having a broadened wavelength band and raising the photosynthetic effective light quantity. CONSTITUTION: This material is obtained by regulating the transmittance of the photosynthetic effective photon flux when light is transmitted to >=50% and further the value of A in the formula A=R/Fr (R is the photon flux of red light at 600-700nm wavelength; Fr is the photon flux of far red light at 700-800nm wavelength) to <=0.9 or >=1.3. The value of A is regulated to <=0.9 by including a coloring matter having the absorption maximum between 600 and 700nm and the value of A is regulated to >=1.3 by including a coloring matter having the absorption maximum between 700 and 900nm. The resultant covering material is useful for promoting the growth of plants such as a sunflower, a cucumber, lettuce, a cabbage, a sesame or a green pepper.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a novel coating material for promoting or suppressing the growth of plants, which is extremely valuable in institutional horticulture.

[0002]

2. Description of the Related Art The first purpose of a covering material used for facility gardening and home gardening is to suppress heat loss due to convective heat transfer between the outside air and the greenhouse (to reduce the ventilation rate), so that an appropriate temperature environment can be obtained. Adjustment, adjustment of cultivation time, reduction of cultivation required days,
It is to increase the number of cultivation. In addition, it also has the effect of blocking rainfall and preventing migration of agricultural chemicals and fertilizers out of the greenhouse, and also enables CO ₂ fertilization. Since the primary coating material is directly exposed to the outside air and sunlight, it is desirable that the primary coating material has a long service life and high light transmittance. For this purpose, glass,
A plastic plate or film is used. Especially in the case of a film, it has an advantage that it is inexpensive and easy to attach and detach. The secondary coating material is mainly used for heat retention and light shielding purposes, and also has the purpose of increasing the spectral transmittance and the proportion of diffused light in the total amount of transmitted light, and polyethylene and aluminum vapor-deposited films are often used. As described above, the function of the covering material that is currently put into practical use is mainly to maintain and control the temperature environment. Regarding the functions of other coating materials, in response to the rapid development of photomorphogenesis in the 1950s, the Ministry of Agriculture, Forestry and Fisheries was the main researcher in Japan, and research on light quality utilization including photomorphogenesis control was conducted. 19
It has been active for more than 20 years until 1983. However, no practical results have been obtained yet (Agriculture and Horticulture, Vol. 69, No. 9, p. 986, 199).
4 years).

By the way, today, the seedlings produced in the seedling production facility are generally oversized, and dwarfed and sturdy seedlings are desired. The dwarfed seedlings are strong against the natural environment, and they are effective in preventing the reduction of crop yield due to the lodging reduction effect. While long-axis flowers are prized as cut flowers in flower cultivation,
In the case of pots, there is a tendency that large dwarf flowers are desired. In fruit cultivation, dwarfing of plants is a major issue for improving workability. Further, in the case of grafted seedlings, uniform cutting between nodes becomes a problem when cutting with a robot. In this way, the growth and growth of plants influences the commercial value, but at present, these regulation are chemical regulation by the dwarfing agent of the drug,
It is carried out by mechanical suppression (pruning pruning), and a safer and simpler method is desired.

[0004] Conventionally, it has been known from experiments using artificial light sources that the growth and growth of plants are promoted in a light environment in which far-red light is abundant. The reason for this is that r/
It is speculated that the fr (r is a photon flux of 660 nm and fr is a photon flux of 730 nm) ratio decreases, and the ratio changes the phytochrome photoequilibrium, and the result acts as a signal on plants to promote elongation. On the contrary, it is known that the elongation is suppressed in a light environment with a lot of red light. However, there are no examples of demonstrating it using coating materials. For example, regarding a film for controlling ultraviolet rays and visible rays, Japanese Patent Laid-Open No. 52-52
-117738, JP-A-1-132648, JP-A-2-
283212, JP-A-61-170322, etc., but there is no description about the influence of far-red light, the relationship with r/fr, the elongation promoting action, and the like. Further, regarding the film controlling far-red light, there is no film showing a concrete effect on plants.

As a method for evaluating and designing an artificial light source for plant cultivation, the present inventors have determined that the ratio of light in the red region to light in the far-red region is the optical morphology as well as the photosynthetic effective light amount (PPF emission efficiency). Clarified that it is important from a perspective,
The plant said that a light source having high PPF emission efficiency and capable of adjusting the ratio of red light/far red light was desirable for plants. Furthermore, when the ratio of red light/far red light is used as a morphological control index in a plant cultivation artificial light environment, a wavelength band (width) of 60 is used.
It was also shown that the range of 0 to 700/700 to 800 nm (R/Fr) is most suitable. Furthermore, a prototype of a four-wavelength emission type fluorescent lamp with high PPF emission efficiency and R/Fr in three steps was experimentally demonstrated, and the effect of controlling growth and growth was demonstrated (Murakami et al., biological environment control, Vol. 30, No. 4, 135). ~ 141 pages, 1992). However, in order to use these artificial light sources, a large amount of equipment costs and operating costs such as electric power costs are required, so that a cheaper method is currently required.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide a coating material which can utilize natural light (sun), is inexpensive and easy to handle, and which controls plant growth practically.

[0007]

[In the formula, R is a photon flux of red light of 600 to 700 nm, and Fr is a photon flux of far red light of 700 to 800 nm]

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The coating material for controlling plant growth of the present invention is a coating material characterized by adjusting the A value. In the present invention, a dye having an absorption maximum between 600 and 700 nm is used to adjust the A value to 0.9 or less, and 7 to adjust the A value to 1.3 or more.
A dye having an absorption maximum between 00 and 900 nm is used. The coating material of the present application is a resin film or resin plate in which the above dye is dispersed and dissolved in a polymer resin, or a resin plate, a glass plate or a resin film in which the dye is made into an ink and applied, or a resin film containing or coating the dye. Which is attached to another resin film, a resin plate or glass, or a resin film, a resin plate or glass which is attached to another resin film, a resin plate or glass with an adhesive containing a dye. ,
Photosynthesis of transmitted light when light is transmitted Effective photon flux (PP
F) It is sufficient if the transmittance is 50% or more and the A value is 0.9 or less or 1.3 or more. A value is 0.
When it is adjusted to 9 or less, plant growth can be promoted, and when the A value is adjusted to 1.3 or more, plant growth can be suppressed. In the coating material for promoting plant growth, more preferable A value is 0.3 or more,
On the other hand, it is 0.7 or less, while the preferable A value for suppressing plant growth is 1.5 or more and 3.0 or less. In each case, the transmittance of light other than the control wavelength is preferably as high as possible, and the transmittance of photosynthetic effective photon flux (PPF) at 400 to 700 nm is preferably 50% or more, more preferably 65% or more. Below 50%,
Photosynthesis in plants is inhibited, and immature plants tend to be low in chlorophyll. The PPF transmittance and the A value of the present invention are calculated based on the standard light source D65.

Here, the term "promotion of plant growth" refers to promotion of elongation of plant height, stem length, internodes, etc., promotion of side branch growth, promotion of flowering, early harvest by promotion of vegetative growth, increase in initial yield, etc. Point to. In addition, plant growth suppression refers to dwarfing of plants by suppressing plant length, stem length, elongation of internodes, etc., suppression of side branch growth, and delayed harvest due to suppression of vegetative growth. Furthermore, the coating is
It means blocking the light from the entire surface of the plant or at least one surface from which the light is incident. Light refers to natural light or artificial light sources. That is, although the method of the present application is advantageous in terms of cost in that it uses natural light, it can be naturally applied to the case where an artificial light source is used.

The resin material used in the coating material of the present application is preferably a resin plate or a resin film which is as transparent as possible. Specific examples include polyethylene, polyacrylic acid, polyacrylic acid ester, polyvinyl acetate, polyacrylonitrile, polyvinyl chloride, addition compounds of vinyl compounds such as polyvinyl fluoride and vinyl compounds, polymethacrylic acid, polymethacrylic acid ester, Polyvinylidene chloride, polyvinylidene fluoride, polyvinylidene cyanide, vinylidene fluoride/trifluoroethylene copolymer, vinylidene fluoride/tetrafluoroethylene copolymer, vinyl acetate/ethylene copolymer (EVA), vinylidene cyanide/ Vinyl compounds such as vinyl acetate copolymers or copolymers of fluorine compounds, fluorine-containing compounds such as polytrifluoroethylene, polytetrafluoroethylene, polyhexafluoropropylene, polyamides such as nylon 6 and nylon 66,
Polyester such as polyimide, polyurethane, polypeptide, polyethylene terephthalate, polycarbonate, polyoxymethylene, polyethylene oxide, polyether such as polypropylene oxide, epoxy resin,
Examples thereof include polyvinyl alcohol and polyvinyl butyral. Although not limited to these resins, particularly preferable resins include general-purpose hard resins such as polyethylene terephthalate, polycarbonate, and polymethylmethacrylate, or polyvinyl chloride, polyvinyl acetate, polyethylene, and vinyl acetate/ethylene. It is an agricultural soft resin such as a copolymer (EVA). 600 used as an additive to adjust the A value to 0.9 or less
Examples of dyes having an absorption maximum in the range of up to 700 nm include the dyes of the following (Chemical Formula 1 and Chemical Formula 2), but the dyes are not limited to these dyes.

[0011]

[Chemical 1]

[0012]

[Chemical 2] On the other hand, as a typical dye having an absorption maximum at a wavelength between 700 and 900 nm used as an additive for adjusting the A value to 1.3 or more, the dye of the following (Chemical formula 3) is exemplified. However, the present invention is not limited to these.

[0013]

[Chemical 3]

The plants of the present invention include Cucurbitaceae, Solanaceae, Legumes, Rosaceae, Brassicaceae, Asteraceae, Aeriaceae,
Algae, Gramineae, Malvaceae, Araliaceae, Lamiaceae, Ginger, Lilyaceae, or Araceae, Vegetables, Asteraceae, Rosaceae, Araceae, Dianthus, Brassicaceae, Limaeaceae, Gentianaceae, Sesameaceae , Legumes, Buttons, Iridaceae, Solanaceae, Limaceae, Araceae,
Orchidaceae, agave family, dogwood family, madder family, willow family, azalea family, oleaceae family, magnoliaceae family, primrose family, sycamore family, perilla family, furoaceae family, quince family, buttercup family, lactaceae family, cactus family,
Cut flowers or potted plants of ferns, moss family, mulberry family, communis family, pineapple family, lactriaceae family, Euphorbiaceae family, pepper family, Takatodai family, Yukinoshita family, Acabanaceae family, Mallow family, Fusariumaceae family, Camellia family, or Oshiroiaceae family. Orchidaceae, or rose family, vine family, mulberry family, oyster family, azalea family, edaceae family, matathidae family,
Passiflora, Rutaceae, Sumacaceae, Pineapple,
Or a fruit tree of the Myrtaceae family.

More specifically, cucumber,
Cabbage, sesame, onion, melon, pumpkin, bitter gourd, zucchini, watermelon, shirouri, tougan, loofah, quince, tomato, pepper, capsicum, eggplant, pepino, citrus, pea, kidney bean, cowpea, lentil, lizard Green beans, bean, strawberry, corn,
Okra, broccoli, kaiware radish, watercress,
Komatsuna, tussah, lettuce, butterbur, chrysanthemum, edible chrysanthemum, celery, parsley, honeywort, celery, leeks, scallions, leek, asparagus, spinach, sardine, udo, perilla, ginger, radish, turnip, wasabi, radish, rutabaka, Vegetables such as kokabu, garlic, lacquer, lotus root, lotus root, or taro, sunflower, orchid, impatiens, marigold, salvia, limonium, delphinium, luxpar, blue lace, white lace, lily, primrose, aster, rhodes, thistle, Dianthus, Stock, Hanana, Statice, Eustoma grandiflorum, Antirrhinum majus, Sweet pea, Hanashobu, Chrysanthemum, Liatris, Gerbera, Margaret, Miyakowasle, Shasta daisy, Carnation, Streptomyces vulgaris, Gentian, Peonies, Perch, Lion, Dahlia, Color, Glacier , Iris, freesia, tulip, daffodil, amaryllis, symbidium, dracaena, rose, bokeh, sakura,
Peach, plum, kodemari, raspberry, rowan, dogwood, sanche, sandanka, burbadea, willow, azalea, forsythia, magnolia, cilanella, dimorphoseca, primula, petunia, begonia, gentian,
Coleus, Zeranium, Pelargonium, Roqueya,
Anthurium, Clematis, Lily of the valley, Saintpaulia, Cyclamen, Ranunculus, Gloxinia, Dendrobume, Cattleya, Phalaenopsis, Banda, Evidendrum, Oncidium, Cactus cactus, Crab cactus, Peacus cactus, Kalanchoe, Neflorepis, Asian antrum, Taniwas, Taniwas. Spatifram, Syngonum, Orizururan, Sieflera, Hedera, Rubber tree, Dracaena, Corgiline, Bridal veil, Bromeliad, Karateya, Croton, Peperomia, Poinsettia, Hydlandia, Fuchsia, Hibiscus, Gardenia, Gyollubai,
Flowers of camellia, bougainvillea, or button, or Japanese pear, peach, cherry, plum, apple, prune, nectarine, apricot, apricot, raspberry, plum, grape, fig, oyster, blueberry, akebi, kiwifruit, passion fruit, loquat, unshu Mandarin orange, Marcolet, Lemon, Yuzu, Buddha tangerine, Hassaku,
Buntan, flower Yuzu, Kumquat, Seminole, Iyokan,
Fruit trees such as Navel Orange, Angkor, Nova, Hyuga Hyuga, Lime, Sudachi, Kabosu, Yakubai Yuzu, Tankan, Mango, Pine Apple, or Guava.

Among these, specific plants that are more effective are sunflower, cucumber, lettuce, cabbage,
Sesame, pepper, eggplant, komatsuna, honeywort, spinach, pumpkin, watermelon, melon, green beans, broccoli, strawberry, mandarin orange, pear, grape, chrysanthemum, onion,
Tomato, goldfish, carnation, gypsophila, rose,
Stock, eustoma, western orchid, cyclamen, impatiens, marigold, salvia, limonium, delphinium, luxpar, blue lace, white lace, lily, freesia, iris, primrose, begonia, shungik, butterbur, leek, leek, asparagus , Celery, radish, pea, loquat and the like.

The resin film or resin plate containing a dye is prepared by an extrusion method based on a resin added with a dye, a resin reacted with a dye, or a resin obtained by reacting a dye with another resin. It can be appropriately obtained using a method such as a calendar method or a casting method. A resin film coated with a dye, a resin plate, or glass is a bar coater, a blade coater, a spin coater, a reverse coater which is a dye dissolved in a monomer or a solvent, a dye dispersed in an emulsion, or a dye dissolved in an emulsion. Using a coater, die coater, etc., resin film,
It can be appropriately obtained by applying it to a resin plate or glass.

As a method for laminating the resin film containing or coated with the dye to another resin film, a resin plate or glass, a method such as a heat laminating method, a dry laminating method or a wet laminating method can be appropriately used. In this case, an adhesive can be used if necessary. As a method of bonding a resin film, a resin plate or glass to another resin film, resin plate or glass using an adhesive containing a dye,
Method of coating resin film, resin plate or glass with adhesive and then bonding to another resin film, resin plate or glass, bonding between resin film, resin plate or glass and another resin film, resin plate or glass A method of pouring the agent and then curing it can be appropriately used.

The coated molded article for gardening facilities or household gardening facilities in the present invention is not particularly limited, but for example, a house type using the resin film of the present invention,
Examples thereof include a house type using the resin plate or glass of the present invention, a small box in which a pot is placed, or the pot is covered from above. As a method of using the coating material for controlling plant growth of the present invention in a horticultural facility, a resin film containing or coating a pigment, a method of sticking to a glass of a glass chamber, a method of using a pipe house, an outer covering of a vinyl house, a glass chamber , Pipe house, vinyl house lining, garden bed cover, tunnel house, mulching film, at least one fruit tree covering, fruit tree branches one by one A coating method or the like can be appropriately used.

As a method for use in a domestic gardening facility, a method according to the method used in the above-mentioned gardening facility, a method of coating at least one flower pot or a planter, a method of using this coating material in place of a window glass of a bay window, etc. , Can be used as appropriate. When using a coating material having a photosynthetic effective photon flux (PPF) transmittance of 50% or more when transmitting light and an A value of 0.9 or less, seedlings such as sunflower, tomato, and cucumber are used. When a stem elongation growth test was performed, the growth rate was surprisingly accelerated compared to natural light, while the photosynthetic effective photon flux (PPF) transmittance when light was transmitted was 50% or more, and A The value is 1.
When 3 or more coating materials were used, a significantly dwarfed and sturdy seedling was obtained.

[0021]

EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to the following examples. In addition, "part" in an Example shows a weight part. Example 1 280 parts of anthraquinone dye represented by the following formula (Formula 4) and 120,000 parts of polymethylmethacrylate were used.
Melt kneading at ℃, thickness 3m using an extrusion molding machine
A colored resin plate having a width of m and a width of 1 m was obtained. When the photosynthetic effective photon flux (PPF) transmittance and A value of this resin plate were measured using a Shimadzu spectrophotometer (UV-3100),
The PPF transmittance was 69.8%, and the A value was 0.57.

[0022]

[Chemical 4] Using this resin plate, height 650 mm, width 1750 mm,
A growth cabinet having a depth of 850 mm was produced.
In the following cultivation, the growth cabinet was placed outdoors and a ventilation fan was used to ventilate the air at 15.2 m ³ /min so that the outside temperature was the same. When 7 samples of sunflower seedlings having a height of about 8 cm were placed in this growth cabinet and cultivated for 10 days, the average plant height was 25.
The length was 3±0.4 cm, the stem length was 21.8±0.7 cm, and the first internode length was 18.0±0.8 cm. For comparison, at the same time, put a gauze on a resin plate containing no pigment,
The photosynthetic effective photon flux (PPF) transmittance is 69.2% (A
The value was set to 1.14) except that the plant was cultivated under the same conditions except that the plant height was 17.6±.
The length was 0.7 cm, the stem length was 14.5±0.8 cm, and the first internode length was 10.8±0.6 cm. From this,
It was confirmed that the growth promoting effect in the case of using the coating material having the A value of 0.57 was about 1.4 times that in the case of the comparative resin plate having substantially the same PPF transmittance.

Example 2 A colored resin plate was obtained in the same manner as in Example 1 except that 4.5 parts of the dye represented by the following formula (Formula 5) was used in place of the dye of Example 1. Photosynthetic effective photon flux (PPF) transmittance is 7
It was 0.2% and the A value was 1.72. Further, when sunflowers were cultivated using the resin plate in the same manner as in Example 1, the plant height was 11.8±0.7 c on average.
m, the stem length is 9.0±0.4 cm, and the first internode length is 5.
It was dwarfed to 8 ± 0.4 cm and became a sturdy plant. From this, it was confirmed that the growth suppressing effect when the coating material having the A value of 1.72 was used was about 0.7 times that in the case of the comparative resin plate of Example 1.

[0024]

[Chemical 5]

Example 3 2.2 parts of a dye represented by the following formula (Formula 6) was dissolved in 1000 parts of polyvinyl butyral resin at 180° C., and a colored film having a width of 3 m and a thickness of 0.2 mm was measured by a film making machine. Was produced. Subsequently, the film was sandwiched by 3 mm-thick float glass and treated at 140° C. and 13 atm for 20 minutes to prepare a laminated glass. The photosynthetic effective photon flux (PPF) transmittance of this laminated glass is 69.0%,
The A value was 0.60. 650m height using this
A growth cabinet having m, a width of 650 mm and a depth of 650 mm was produced. When sunflowers (3 samples) were cultivated in the same manner as in Example 1, the plant height was 23.5±1.2 cm and the stem length was 20.2±0.7 cm on average.
And the first internode length was 16.8±0.5 cm. A
It was confirmed that the growth promoting effect in the case of using the coating material having the value of 0.60 was about 1.3 times that in the case of the comparative resin plate having substantially the same PPF transmittance.

[0026]

[Chemical 6]

Example 4 A laminated glass was obtained in the same manner as in Example 3 except that 3.0 parts of the dye represented by the following formula (Formula 7) was used in place of the dye of Example 3. Photosynthetic effective photon flux (PPF) of this film
The transmittance was 71.8% and the A value was 1.59.
Using this film, sunflower cultivation was carried out in the same manner as in Example 3, and the plant height was 14.
The plant was dwarfed and had a sturdy length of 2±0.5 cm, a stem length of 10.0±0.6 cm, and a first internode length of 6.6±0.2 cm. From this, it was confirmed that the growth suppressing effect using the coating material having the A value of 1.59 was 0.8 times that in the case of the comparative resin plate of Example 1.

[0028]

[Chemical 7]

Example 5 Uban SE-60 manufactured by Mitsui Toatsu Chemicals, Inc., and a liquid in which Almatex 748-5M manufactured by the same were mixed at 3:7, and toluene containing 1% of the dye of Example 1 dissolved therein 2:1
The mixture was mixed at a ratio of 1., coated on a polyethylene terephthalate film having a thickness of 75 μm, and dried at 130° C. for 15 minutes. Photosynthetic effective photon flux (PP) of this film
F) The transmittance was 70.2% and the A value was 0.59. When sunflower was cultivated in the same manner as in Example 1, the plant height was 23.8±1.4 cm, the stem length was 18.2±0.8 cm, and the first internode length was 15.1 on average. ±
It was 0.5 cm. For comparison, photosynthetic effective photon flux (PPF) was applied to a film containing no pigment by applying a gauze cloth.
When the plant was cultivated under exactly the same conditions using the one having a transmittance of 70.8% (A value was 1.03), the average plant height was 17.5±0.8 cm and the stem length was 14.6±. The length was 0.6 cm and the first internode length was 11.2±0.8 cm. From this, it was confirmed that the growth promoting effect in the case of using the coating material having the A value of 0.59 was about 1.4 times that in the case of the comparative resin plate having substantially the same PPF transmittance. ..

Example 6 In Example 5, instead of the dye of Example 1, Example 2 was used.
A colored film was obtained in the same manner as in Example 5 except that the above dye was used. Photosynthetic effective photon flux (PP) of this film
F) The transmittance was 72.5% and the A value was 1.55. Using this film, sunflower cultivation was carried out in the same manner as in Example 5, and the plant height was 14.9±0.4 cm, the stem length was 10.3±0.5 cm, and the first average. It became a sturdy plant with a dwarfing internode length of 6.7±0.3 cm. From this, it was confirmed that the growth suppressing effect using the coating material having an A value of 1.55 was 0.9 times that of the comparative resin plate of Example 5.

Example 7 7 samples of cucumber seedlings having a height of about 6 cm were placed in the growth cabinet made of the colored resin plate used in Example 1 for 9 minutes.
After cultivating for days, the plant height was 28.4±1.
The length was 8 cm, the stem length was 18.2±1.5 cm, and the first internode length was 5.7±0.9 cm. For comparison, at the same time,
When cultivated under exactly the same conditions except that the resin plate containing no pigment was used, the plant height was 21.8±1.5 cm on average,
Stem length 11.3±1.2 cm and first internode length 2.7
It was ±0.2 cm. From this, the A value is 0.57.
The growth promoting effect of cucumber when using the coating material of
It was confirmed that the amount was about 1.3 times that of the comparative resin plate containing no dye.

Example 8 When cucumber was cultivated in the same manner as in Example 7 in the growth cabinet made of the colored resin plate used in Example 2, the plant height was 13.8±1 on average. .1c
m, the stem length is 6.8±0.4 cm, and the first internode length is 1.
It became a sturdy plant by dwarfing 5 ± 0.5 cm. From this, it was found that the cucumber growth inhibitory effect when the coating material having an A value of 1.72 was used was about 0.6 times that of the comparative resin plate of Example 7.

Example 9 7 samples of tomato seedlings having a height of about 5 cm were placed in the colored resin plate growth cabinet used in Example 1 and cultivated for 9 days. The average plant height was 28.8±. 1.8
cm, the stem length was 21.8±2.0 cm, and the first internode length was 13.6±1.1 cm. For comparison, when a resin plate containing no pigment, which was produced in Example 1 at the same time, was cultivated under exactly the same conditions except that the plant height was 2 on average.
The length was 2.4±1.8 cm, the stem length was 14.8±1.5 cm, and the first internode length was 7.7±0.9 cm. From this, it is found that the growth promoting effect of tomatoes using the coating material having an A value of 0.57 is about 1.3 times that of the comparative resin plate containing no pigment of Example 1. confirmed.

Example 10 Tomatoes were cultivated in the same manner as in Example 9 in the growth cabinet made of a colored resin plate used in Example 2 at the same time. As a result, the plant height was 14.4±1.8 on average.
cm, the stem length was 10.2±1.4 cm, and the first internode length was 4.8±0.6 cm. From this, it is found that the tomato growth-inhibiting effect when the coating material having an A value of 1.72 is used is about 0.6 times that in the case of the comparative resin plate containing no pigment of Example 9. found.

Example 11 Other plants were subjected to the same growth promotion test as in Example 1, and the results shown in Table 1 (Table 1) were obtained. Example 12 When other plants were subjected to the same growth inhibition test as in Example 2, the results shown in Table 2 (Table 2) were obtained.

[0036]

[Table 1] ◯: Acceleration effect 1.3 times or more Δ: Acceleration effect 1.1 times or more, less than 1.3

[0037]

[Table 2] ◯: Suppression effect 0.7 times or less Δ: Suppression effect greater than 0.7 times and 0.9 times or less

Comparative Example 1 Photosynthetic effective photon flux (PP) was applied to a growth cabinet made of a resin plate containing no dye used in Example 1 by placing a gauze cloth on it.
F) Cultivation was carried out under exactly the same conditions as in Example 1, using the one having a transmittance of 20.0% (A value is 1.05),
It became an immature plant with little chlorophyll.

[0039]

EFFECTS OF THE INVENTION In recent years, from the viewpoint of rationalization of agriculture, the number of healthy seedlings rather than seeds is increasing. In the production of seedlings, the present invention is extremely important and valuable in controlling the growth of seedling production factories because controlling the growth of seedlings appropriately increases the commercial value. Also, in Japan, there are many greenhouses (generally vinyl greenhouses), and the resin film of the present invention is an inexpensive and hassle-free excellent material for the purpose of controlling plant elongation. Especially, if the polymer coating material of the present invention can be movably overlaid and set on a conventional vinyl house, when the growth is too fast or too slow,
It is very easy to control the growth degree to suit the purpose. The present invention is extremely valuable from the viewpoint of high quality and labor saving in leaf vegetables, fruit vegetables, root vegetables, various ornamental plants and institutional cultivation of fruit trees.

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kazuhiro Kiyono, 1190 Kasama-cho, Sakae-ku, Yokohama-shi, Kanagawa Mitsui Toatsu Chemicals, Inc. (72) Shuhei Imon, 2-1-1, Tango-dori, Minami-ku, Nagoya, Aichi Toatsu Chemical Co., Ltd. (72) Inventor Keisuke Takuma 1190 Kasama-cho, Sakae-ku, Yokohama-shi, Kanagawa Mitsui Toatsu Chemical Co., Ltd.

Claims (12)

[Claims] 1. A photosynthetic effective photon flux (PPF) transmittance of 50% or more when light is transmitted, and an A value represented by the following formula is 0.9 or less. A coating material for promoting the growth of any one of the target plants of. A=R/Fr [In the formula, R is a photon flux of red light of 600 to 700 nm, and Fr is a photon flux of far red light of 700 to 800 nm] Target plants: Cucurbitaceae, Solanaceae, legumes, Rosaceae, Brassicaceae, Asteraceae, Seriaceae, Rhinoceros, Gramineae, Mallow, Araliaceae, Lamiaceae, Ginger, Water lily, Araceae, Vegetables, Asteraceae, Rosaceae, Araceae, Dianthus , Brassicaceae, Liliaceae, Gentianaceae, Spodoptera, Leguminosae, Button, Iridaceae, Solanaceae, Limaceae, Araceae, Orchidaceae, Agaveaceae, Cornaceae, Rubiaceae, Salixaceae, Azalea, Makusei Family, Magnolia family, Primrose family, Pleurotus family, Lamiaceae family, Furoaceae family, Crassulaceae family, Ranunculaceae family, Saccharidae family, Cactiaceae family, Fern family, Araliaceae family, Moraceae family, Commelinae family, Pineapple family, Astragalus family, Euphorbiaceae family, Pepperaceae, hawk-tailed family, saxifrage family, red-crowned family, mallow family, Myrtaceae family, camellia family, or ocellaceae cut flowers or potted flowers, or rose family, vine family, mulberry family, oyster family, azalea family, akebi Orchidaceae, Polygonaceae, Passiflora, Rutaceae, Sumacaceae, Pineapple, or Fusarium 2. A photosynthetic effective photon flux (PPF) transmittance of 50% or more when light is transmitted, and an A value represented by the following formula is 1.3 or more. A coating material for suppressing the growth of any one of the target plants of. A=R/Fr [In the formula, R is a photon flux of red light of 600 to 700 nm, and Fr is a photon flux of far red light of 700 to 800 nm] Target plants: Cucurbitaceae, Solanaceae, legumes, Rosaceae, Brassicaceae, Asteraceae, Seriaceae, Rhinoceros, Gramineae, Mallow, Araliaceae, Lamiaceae, Ginger, Water lily, Araceae, Vegetables, Asteraceae, Rosaceae, Araceae, Dianthus , Brassicaceae, Liliaceae, Gentianaceae, Spodoptera, Leguminosae, Button, Iridaceae, Solanaceae, Limaceae, Araceae, Orchidaceae, Agaveaceae, Cornaceae, Rubiaceae, Salixaceae, Azalea, Makusei Family, Magnolia family, Primrose family, Pleurotus family, Lamiaceae family, Furoaceae family, Crassulaceae family, Ranunculaceae family, Saccharidae family, Cactiaceae family, Fern family, Araliaceae family, Moraceae family, Commelinae family, Pineapple family, Astragalus family, Euphorbiaceae family, Pepperaceae, hawk-tailed family, saxifrage family, red-crowned family, mallow family, Myrtaceae family, camellia family, or ocellaceae cut flowers or potted flowers, or rose family, vine family, mulberry family, oyster family, azalea family, akebi Orchidaceae, Polygonaceae, Passiflora, Rutaceae, Sumacaceae, Pineapple, or Fusarium 3. The plant growth promoting coating material comprises 600-7.
The coating material for promoting plant growth according to claim 1, which is a resin film or a resin plate containing a blue dye having a maximum absorption wavelength (λ _max ) between 00 nm. 4. The coating material for promoting plant growth is a resin film, a resin plate, or glass coated with a blue dye having a maximum absorption wavelength (λ _max ) in the range of 600 to 700 nm. Coating material for promoting plant growth of. 5. The plant growth promoting coating material comprises 600-7.
The coating for promoting plant growth according to claim 1, wherein a resin film containing or coated with a blue dye having a maximum absorption wavelength (λ _max ) between 00 nm is attached to another resin film, a resin plate or glass. material. 6. The plant growth promoting coating material comprises 600-7.
2. An adhesive containing a blue dye having a maximum absorption wavelength (λ _max ) between 00 nm and a resin film, a resin plate or glass bonded to another resin film, a resin plate or glass. Coating material for promoting plant growth of. 7. A horticultural facility for promoting plant growth, which is devised so that light may strike a target plant through the coating material for promoting plant growth according to any one of claims 1, 3, 4, 5, and 6. Alternatively, a coated molding for home gardening. 8. A plant growth suppressing coating material is 700-9.
The plant growth suppressing coating material according to claim 2, which is a resin film or a resin plate containing a near-infrared absorbing dye having a maximum absorption wavelength (λ _max ) in the range of 00 nm. 9. The plant growth suppressing coating material is a resin film, resin plate or glass coated with a near infrared absorbing dye having a maximum absorption wavelength (λ _max ) in the range of 700 to 900 nm. The coating material for suppressing plant growth described. 10. The coating material for suppressing plant growth is 700 to
The plant growth inhibitory method according to claim 2, wherein a resin film containing or coating a near-infrared absorbing dye having a maximum absorption wavelength (λ _max ) within 900 nm is attached to another resin film, a resin plate or glass. Coating material. 11. A coating material for promoting plant growth, which comprises 700 to
An adhesive containing a near-infrared absorbing dye having a maximum absorption wavelength (λ _max ) within 900 nm, which is obtained by laminating a resin film, a resin plate or glass onto another resin film, a resin plate or glass. 2. The coating material for suppressing plant growth according to 2. 12. A horticultural facility for suppressing plant growth, which is devised so that light is applied to a target plant through the coating material for suppressing plant growth according to any one of claims 2, 8, 9, 10 and 11. Alternatively, a coated molding for home gardening.