JPS60149322A - Culture of fruits vegetables - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed explanation of the invention] The present invention is based on the method of cultivation of fruit vegetables, and for more details, a coating of agricultural coating made of ultraviolet shielding resin material, which is colored in blue -colored blue -colored characteristics. Below is information on how to grow fruit and vegetable plants.

Several agricultural covering materials with UV-shielding properties have been proposed. For example, JP 48-37459, JP 49-16301, JP 53-47383.
See Japanese Patent Application Laid-open No. 51-100445, etc. On the other hand, various studies have been conducted for a long time regarding the relationship between light in the visible light range and plant growth. For example,
Publication No. 2911, Publication No. 47-24376, Publication No. 17093-1983, Publication No. 43778-1978, Comprehensive research on the technologicalization of light quality utilization in agricultural farming: Administrative Affairs of the Fisheries Arts Conference Published by the Bureau (February 2, 1976)
9th) See pages 88-89, etc. Furthermore, several agricultural films have been proposed that block ultraviolet rays and are colored in a specific color. For example, Tokuko Sho 54-158
No. 18, JP-A-52-43637, Central Research Institute of Electric Power Industry, Agricultural Electricity Research Institute Report: Research Report: 71003 (197
(October 2016) Refer to 18 members.

However, these conventionally proposed colored UV-shielding films can be expected to improve the growth of cultivated plants, increase yields, etc. at a certain temperature;
It's still not enough.

The present inventors have also been interested in UV-shielding commercial coating materials, and have discovered that UV-shielding agricultural breakage materials can prevent plant disease from spreading and prevent tomato fruit splitting. , increased sugar content of fruit,
It was discovered that it has excellent effects on preventing rot in leafy vegetables, preventing aging in green peppers, and preventing aging in cucumbers, etc., and has recently proposed, for example, Samurai Kosho 53-47383.
No. public welfare, Japanese Patent Application Laid-open No. 1983-98125, 1973-
No. 2238, JP-A-53-27539, JP-A-53-75039, JP-A-53-117546
No. 53-127126, JP-A-53-127126, JP-A-53-127126
-127129 publication etc.

Furthermore, regarding colored agricultural covering materials with UV-shielding properties, the present inventors reported in JP-A-52-117738 that the average transmittance for visible light in the wavelength range of 400 to 700 nm is at least 40% or more. and 400
The ratio of the average transmittance to blue light with a wavelength of ~500 nm to the average transmittance to red light with a wavelength of 600 to 700 nm is in the range of 1.2:1 to 25:1, and at least 370 nm and each We have proposed a blue-coloured ultraviolet screening agricultural material made of an agricultural resin film or plate that has the property of substantially blocking light rays of the following wavelengths. However, this ultraviolet-shielding agricultural covering material was developed by the samurai for use in raising seedlings in the water layer, and the penetration rate of light in the reddish region is considerably different, and it is suitable for fruit vegetables and vegetables. When used in the garden, it has the disadvantage that it does not have a favorable effect of promoting growth or increasing yield.

Therefore, the inventors of the present invention have conducted intensive research on colored ultraviolet-shielding coating materials for living reptiles that are suitable for the cultivation of fruit vegetables and leafy vegetables, and in particular, have created the following light-transmitting custom-made coating material. Agricultural coverings that: (a) substantially block the transmission of light of wavelengths of at least 370 nm or less; (c) the average transmittance of light between 440 and 590 nm is at least 85%; (d) 600 and 700 nm;
and (g) the ratio of the average transmittance of light of wavelengths between 400 and 500 nm to the average transmittance of light of wavelengths between 600 and 700 nm. The present invention has been completed based on the discovery that an agricultural covering material consisting of a blue-colored transparent synthetic resin film or plate having a coefficient of less than 1.2 is extremely suitable for autumn cultivation of fruit and vegetable plants. reached.

According to the present invention, the above (a), (b), (c)
), (d) and (e), suitable for the cultivation of fruit and vegetable plants, characterized by being made of a transparent synthetic resin film or board colored in a color scheme that satisfies the five light-transmitting characteristics of (d) and (e). Overtime coverings will be provided.

When the agricultural covering material provided by the present invention is used as fallen material for greenhouses and tunnels in the cultivation of fruits and vegetables, It can effectively prevent the fatigue phenomenon, and when carrying cucumbers,
It has a great effect on tomatoes, green beans, He-Man, etc. (prevents fatigue).

(b) The yield of fruits and vegetables can be significantly increased (yield increase effect).

(c) It is possible to improve the quality of harvested fruits and vegetables. For example, in the case of tomatoes, the incidence of fruit splitting can be reduced, and the vermilion color of cucumbers can be improved (quality improvement effect).

(d) The growth of the plant height of the succulent plants is moderately suppressed, the moderation is tight, and the plants can be grown into tall, full-bodied plants (Koto, cultivated with light seeds).

The effects of cultivating fruits and vegetables, etc. are hidden, and the contribution to the cultivation of fruits and vegetables is extremely large.

In this specification, the phenomenon of "growth fatigue" refers to, for example, "Problems and Solutions of Vegetable Production" (Part 2) One Type of Technology Edition [Co., Ltd.
As stated in lines 10 to 20 of page 12 of Seibundo Shinkosha, 1st edition published on August 25, 1978, the peak fruit harvest period has passed in the cultivation of fruit and vegetable plants. Around the time,
This refers to a situation in which the yield of fruit temporarily decreases due to a lack of nutrient storage and a decline in assimilation ability due to aging of the leaves, resulting in a large number of defective fruits.

As used herein, "to practically block the transmission of light with a wavelength of xnm or less" means not only the case where transmission of light with a wavelength of xnm or less is completely blocked 100%, but also xn
transmitting at least 80% of light of wavelengths m and below;
The term is used to include cases where shielding is preferably 90% or more, and more preferably 95% or more.

Furthermore, the term "absorption maximum" refers to the portion of the absorption curve of the absorption spectrum that exhibits the maximum absorbance or extinction coefficient within a certain wavelength range. In addition, when the top of the peak indicating the absorption maximum is relatively flat, the center point of the flat part is referred to as the absorption maximum. Furthermore, "average transmittance" refers to the wavelength range (a-b) within a certain wavelength range (a-b )nm, it refers to the value shown by.

Therefore, the agricultural cover materials that can be suitably used in the present invention are the above-mentioned (α), (b), (c), (d) and (e).
), and furthermore, the lower period (a′), (
It also satisfies one or more of the requirements selected from b'), (c') and (d').

(a') Substantially blocking transmission of light having a wavelength of at least 380 nm or less.

(b') The absorption maximum in the wavelength range from 440 nm to 700 nm is between 590 and 625 nm, more preferably between 595 and 620 nm, and the transmittance of light falling in the absorption maximum is between 70 and 88%, more preferably Must be within the range of 75-85%.

(c') The average transmittance of light with a wavelength between 440 and 590 nm is at least 85% or more, more preferably 87% or more. and (d') the average transmittance of light in the range from 600 to 700 nm is at least 75%, more preferably from 77 to 88
Must be within the range of %.

In addition, the coating material for sailboats of the present invention has a curve of light wavelength (horizontal axis) vs. light transmittance (vertical axis) as much as possible within the wavelength range of 380 nm to 420 nm. It is preferable to use a material that exhibits a light transmittance characteristic that rises vertically.
%, and the average transmittance at 400 to 440 nm is generally within the range of 65 to 90%, preferably 70 to 85%.

Furthermore, the agricultural mulching material of the present invention has a wavelength of 440 nm to 590 nm.
There is no absorption peak in the liquid receiving region at nanometer scale, especially
The transmittance in the wavelength range from 440nm to 525nm is 8
It can be 5% or more. However, on the other hand, 600n
In the dark region from m to 700 nm, in addition to the absorption peak that gives a large absorption value, there may be a smaller absorption peak, and such a weak absorption peak is 660 nm.
~700 nm, therefore, 625
The average blood permeability between 700 nm and 700 nm can generally range from 75 to 90%, preferably from 78 to 87%.

In addition, as the agricultural temporary memory material of the present invention, 500 to 600
It is desirable that the average transmission center of light with a wavelength of 600 nm or more is within the range of 0.8 to 1.1 times the average transmission of visible light in the wavelength range of 600 nm or more.

There are no particular restrictions in the wavelength region of 700 nm or more, but in general, the average rejection rate for wavelengths of 700 nm or more, especially infrared wavelengths, should be 95% or less and 60% or more. is desirable.

For example, the above-mentioned light-transmitting material is made by blending slow-moving materials or pigments and ultraviolet light absorbing agents with ordinary film-forming synthetic resin and molding it into a film or plate. Alternatively, at least one ordinary transparent synthetic resin film or temporary material is coated with a coating inhibitor such as a dye or pigment, an ultraviolet absorber, and a sweet acid resin vehicle, or a nuclear dye or a head. one of the material, the ultraviolet light bulb, and the absorbent are incorporated into the film or board of the present invention, and the other is coated on at least one curve of the core film or board in the form of the above-mentioned coating composition, etc. It can be manufactured by the following method.

The film-forming thermoplastic resin that can be used is
For example, polyvinyl silane, polyvinylidene chloride, polyethylene, polypropylene, polysterene, polyester,
Polyamide, polycarbonate, polymethyl methacrylate, polyacrylate. Polyvinyl chloride, polyvinyl methacrylate, copolymers or blends mainly composed of these polymers are included, and polyvinyl chloride, polymethyl methacrylate, polyethylene, and ethylene-hinyl acetate copolymer are preferred,
Among these, polyvinyl chloride is preferred.

As an ultraviolet absorber that is blended with these synthetic resins, we have selected a wide range of UV absorbers from among a wide range of types, taking into account the absorption capacity of the UV absorber and its compatibility with the synthetic resin used. Can be used selectively. Examples of usable ultraviolet absorbers include the following.

Hydroquinono series - Hydroquinone, Hydroquinofudisaliterate Brinaric acid series - Phenyl salinarate, Paraophonal phenyl salicylate Penzophenone series - 2-Hydroxy-4-methoxybenzophenone, 2-Hydroxy-4-n-octoyam Benzonoenono, 2-hydroxy-4-methoxy-2'-carboybenzophenone, 2,4-dihydroxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, 2-hydroxy-4 -benzoyloxybenzophenono, 2,2'-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-5-sulfonebenzophenone, 2,2',4,4'-
Tetrahydroxybenzophenone, 2,2'-hydroxy-4,4-enemethoxy-5-sodium sulfopensophenone, 4-dodecyloxy-2-hydroxybenzophenone, 2-noidroxy-5-chlorbenzophenopenzo Triazole-2-(2'-hydroxy-5'
-methylphenyl)benmetriazole, 2-(2'-
Hydroxy-5'-methylphenyl)-5-carboxylic acid butyl ester benzotriazole, 2-(2'-hydroyac-5'-methylphenyl)-5,6-cyclolbencitriazole, 2-hydroxy-5'-methyl phenyl)-5-ethylsulfonebenzotriazole, 2-
(2'-hydroxy-5'-tertiary methylphenyl)-5
-Chlorbenozotriazole, 2-(2'-hydroxy-5'-tert-butylphenyl)bensotriazole, 2
-(2-hydroxy-5'-aminophenyl)benzotriazole, 2-(2'-hydroxy-3',5'-dimethylphenyl)benzotriazole, 2-(2'-hydroxy-3',5'-dimethyl phenyl)-5-methquinenzotriazole, 2-(2'-methyl-4'-
hydroxyphenyl)benzotriazole, 2-(2'
-stearyl palm-3',5'-dimethylphenyl)
-5-methylbenzotriazole, 2-(2'-hydroxy-5'-carboxyphenyl)pensotriazole ether ester, 2-(2'-hydroxy-3'-methyl-5'-tert-butylphenyl)benzotriazole ,
2-(2'-Hydroxy-3',5'-n-tertiary bunalphenyl)-5-chloro-bensitotriazole, 2-
(2'-Hydroxy-5'-methoxyphenyl)benzotriazole, 2-(2'-hydroxy-5'-phenylphenyl-5-chlorobenzotriazole,
'-Hydroxy-5'-cyclohexylphenyl)benzotriazole, 2-(2'-hydroxy-4',5'
-dimeterphenyl)-5-phenoxycarbonylbenzotriazole, 2-(2'-hydroxy-3',5'
-dichlorophenyl)penztriazole, 2-(2'
-hydroxy-4',5'-dichloro)benzotriazole, 2-(2'-hydroxy-3',5'-dimeterphenyl)-5-ethylsulfonobenzotriazole,
2-(2'-hydroxy-5'-phenylphenyl)benzotriazole, 2-(2'-hydroxy-4'-octoxyphenyl)benzotriazole, 2-(2'-
hydroxy-5'-methoxyphenyl)-5-menalbenzotriazole, 2-(2'-hydroac-5'-methylphenyl)-5-ethoxycarbonylbenosotriazole, 2-(2'-acetotin-5'- methylphenyl)benzotriazole, 2-(2'-hydroxy-3
',5'-di-tert-buternoenyl)-5-chlorobencitriazole.

Among these ultraviolet irradiation agents, benozophenono-based and benzotriazole-based agents are preferred, and among the benzyphenone-based agents, 2,3-dihydroxy-4,4-dimethoxybenzophenone, 2,2'-dihydroxy- 4-
methoxybenzophenone and 2,2'. 4',4'-detrahydroxybenzophenonebennodriazole 2-(2'-hydroxy-5'-methylphenyl)
Bensotriazole, 2-(2'-hydroac-5'-
menalphenyl)-5,6-cyclobennodriazole, 2-(2'-hydroyac-5'-tertiary bunalphenyl)penzotriazole, 2-(2'-hydroyac-3
'-menal-5'-tert-butylphenyl)benzotriazole, 2-(2'-hydroxy-3',5'-di-tert-butylphenyl)-5-chloro-penzotriazole and 2-(2'- Hydroxy-5'-phenylphenyl]-5-chlorobencitriazole, 2-(2'-hydroxy-3',5'-di-tert-buterphenyl)-5-
Chlorobencitriazole, 2-(2'-hydroxy-
5'-Octoyaciphenyl)bencitriazole and the like are effective.

Particularly preferred outer shelf absorbers are those in which R1 and R2 are the same or different and each represent a lower alkyl group or an aryl group, especially a phenyl group, and in particular R1 is preferably a C5 or less branched It is represented by a chain lower alkyl group or a phenyl group, R3 represents an alkyl group of C6 or more, preferably C8 to C10, and X is a hydrogen atom or a halogen atom, especially a salinity atom. It is a citriazole derivative.

The composition of the ultraviolet absorber as described above can be varied widely depending on the mass of the ultraviolet absorber, the thickness of the synthetic resin used, the thickness of the film or plate, etc., but it is not inventive. In order to completely block the transmission of ultraviolet rays of 370 nm or less, especially 380 nm or less, the following formula 15 should be used between the amount of the external ray absorbing agent and the thickness of the resulting film or board. ≦AB≦600 Preferably 20≦AB≦400 In the formula, A represents the compounding amount (PHE) of outside and inside stores,
B is the thickness (μ) of the film or plate, and it is desirable for the samurai to satisfy the system shown below.

Here, PHR refers to the number of parts per 100 weight units of synthetic resin.

The composition of the ultraviolet absorber (A) varies depending on the synthetic fat and the cotton field used for cutting the ultraviolet absorber, but it is generally 0.003 to 5.
In the case of a film, the PHR is preferably within the range of 0.1 to 5.0 PHR.

On the other hand, dyes or pigments that can be blended into the film-forming injection synthetic resin have a maximum absorption wavelength (λmaw) of 590 to 590.
A blue dye or pigment having a wavelength of 625 nm, preferably within a range of 590 to 620 nm and having good compatibility with the synthetic fallen fat can be used. In general, pigments have better resistance to alcohol than dyes, and are therefore more suitable.

Examples of pigments that can be used include the following. Gold-free phthalocyanine blue (C.I.Pigm)
Pigment Blue 16; C, I, 74100), Phthalocyanine Blue (C, I, Pigment Blue
15; C, I, 74160), Phthalocyanine Green (C.I. Pignant Green 7; C, I,
74260), Gunsei (C.I, 77007), Konyoi (C.
, I, 77510 and 77520), cobalt blue (
C, I, 77346), Cerulean Blue (C, I, 7
7368), Alkaline Blue Lake (C, I, 4275)
0A and 42770A), Peacock Blue Lake (C
, I, 42090 and 42025), Victoria Blue Lake (C.I. 44045), Fast Sky Blue (C.I. 74180), Indanthrene Blue RS (
C, I, 69800), Inodanthrene Blue BC (C
．． I. 69825), Indigo (C.I.73000)
,Such.

In addition, examples of dyes that can be used include C.I. I. So
lvent Blue33, 35, 65, 79, 90,
95, 122, and the like.

These pigments or dyes can be used alone, or in combination of two or more.

Particularly preferred among these colorants are phthalocyanine pigments, with metal-free phthalocyanine blue, phthalocyanine blue, and phthalocyanine green being particularly preferred. Among dyes, C. I. Solvent Bl
ue33, 90, and 95 are preferred.

The amount of the colorant mentioned above can be varied widely depending on the type of colorant used, the type of synthetic resin, the thickness of the film or board, etc., and the amount of colorant required in each case can be varied widely. The amount to be blended can be easily determined by a person skilled in the art by conducting a simple small-scale experiment according to the Lambert-Beer law.

However, in order to obtain a blue-colored synthetic resin film or plate having the light transmission properties shown in (b), (c), (d), and (e) above, it is generally necessary to mix a coloring agent. The relationship between the amount and the thickness of the obtained film or plate is expressed by the following formula: 0.01≦PB≦20, preferably 0.1≦PB≦10, where P represents the amount of colorant (PHR), and B is In many cases, the relationship expressed by the thickness (μ) of the film or plate holds true.

The amount (P) of the colorant to be blended varies depending on the type of synthetic resin and colorant, but can generally be in the range of 0.0001 to 0.4 PHR, preferably 0.001 to 0.1 PHR.

In addition, in the case of phthalocyanine fuel, which is particularly suitably used as a coloring agent, the amount (P) blended may be very small, generally 0.001 to 0.06 PHR, preferably 0.00 PHR.
5 to 0.04 PHR, more preferably 0.01 to 0.0
It can be within the range of 3PHR.

In addition to the ultraviolet absorber, the synthetic resin film or plate used in the present invention may contain other usual resin additives, if necessary.
For example, small amounts of plasticizers, lubricants, antioxidants, light stabilizers, antistatic agents, swelling agents, heat stabilizers, dyes, pigments, etc. may be included.

The above-mentioned film or plate can be manufactured using various methods known per se, such as a calender method, a T-die method, a melt extrusion method such as an inflation method, a press method, a solution flow method, and the like.

The thickness of the film or plate thus formed can vary over a wide range depending on its use, but generally for the purpose of the present invention, the thickness is 15 to 5.
000μ, particularly in the range of 20 to 500μ. The film or board may be provided with reinforcement, etc., as necessary.
It can also be used by laminating it on other synthetic resin films, sheets, glass, etc.

Furthermore, on one or both sides of the coating material made of the film or plate of the present invention, methacrylic esters such as methyl methacrylate and ethyl methacrylate and/or acrylic esters such as methyl acrylate, ethyl acrylate, and butyl acrylate may be used. And/or a surface treatment agent made of a polymer or copolymer of α,β-unsaturated carboxylic acid such as methacrylic acid can also be applied.

The agricultural covering material provided by the present invention is suitable for agricultural crops, especially fruit and vegetable plants, such as cucumbers, watermelons, melons, house melons, ground melons, whiteworts, tomatoes, eggplants, green peppers, locusts, green beans, green beans, Japanese lentils, Edamame, sweet corn, etc. [[Vegetable production issues and decisions] (Part 2)
In the full-scale cultivation of crops of the type Tsubetsu technique edition - [Refer to Seimatado Monkosha Co., Ltd., 1st edition published on August 25, 1952],
It can be used for seven purposes as a material for greenhouses, pipe nous, tononelles, etc., and has the excellent cultivation effects mentioned above (preventing fatigue, increasing yield, improving the quality of young fruits, and enhancing the cultivation effect. etc.).

When cultivating agricultural products using the covering material of the present invention, it can be carried out in exactly the same manner as the facility cultivation method of Tsugu, except that the covering material of the present invention is used in place of the conventional covering material. Yes, no special consideration is required. That is,
Value-added coatings coated with the coating material of the present invention, such as yixue,
In pipe houses and tunnels, agricultural products can be grown in greenhouses, greenhouses, and tunnels by hand. In this case, it has conventionally been common practice to enclose the center of the greenhouse, perform kusunai, or perform ventilation by raising the hem in order to adjust the temperature and humidity in the greenhouse, house, or tunnel. However, when using the screen material of the present invention, it is not possible to carry out the process in exactly the same way.

Hereinafter, the production of the temporary warp material of the present invention and the effects of mounting with a focus on warping will be further explained with reference to Examples.

Actual example A (preparation of film) 100 parts by weight of polyvinyl vinyl, dioctyl phthalate (
Plasticizer) 47 Ren Abe, Neptel Tin Malate (Stain Stabilizer)
1.5 parts by weight, zinc stearate (stabilizer) 0.5 parts by weight, calcium stearate (heat stabilizer) 1.0 parts by weight, stearic acid (lubricant) 0.1 parts by weight, norbitan monolaurate ( Antifogging agent) 1.0 parts by weight, as well as the table below-
A predetermined amount of the pigment shown in No. 1 and an additive are mixed, and the mixed mixture is melt-extruded at 200° C. using an extruder to form a film No. 1 with a thickness of 0.1 m/m. 1 to 10 were seeded.

The light transmittance curves of each film are shown in the attached FIG. 1.

In addition, Figure 2 below shows the resolution of the light transmission curve.

Examples 1 to 2 and Bikino Examples 1 to 7 On June 16th, green beans (products for Shin-Edo) were planted, and 6
On the 24th of every month, the bacteria were cultivated at a distance of 60 cm between rows and 30 cm between plants, and tunnel cultivation was carried out under covering with the film shown in Table 1. The season is from July 27th to August 3rd.
The test was carried out on day 0, and the results are shown in Tables 3 and 4. Cultivation of the green beans, ie, fertilization, irrigation, and suction management, were carried out in accordance with conventional methods throughout the entire cultivation period.

From the results in Table 3, film No. 1 and no. It can be seen that in the 2-covered plot, the number of nodes and lateral branches is surprisingly large, even though the amount of plant height elongation is smaller than in the other film-covered plots. This result is film no. 1 and no. 2
In the covered area, the plant height of green beans was appropriately controlled, and the internode length was short, indicating that the plants had grown into tall, full-bodied plants.

As is clear from Table 4, film No. 1 and no. In the 2-covered area, compared to other film-covered areas,
There are very few seasonal arsenals, and the phenomenon of "growth fatigue" of stocks is
Almost no offspring are produced, the total harvest is overwhelmingly large, the average weight of the pods is large, and the quality is excellent.

Examples 3 to 4 and Comparative Examples 8 to 14 Various films shown in Table 1 were placed in a pipe house of 10 pipes (
Each was expanded to a width of 4.5 m and a depth of 15 m.

4.5 cucumbers (variety: Tokiwa No. 93 P type) sown on November 20th were planted in each pipe house on December 27th.
Plants were placed in a location that would become a tsubo, and harvesting began on February 6th.
He continued cutting irises until the first poem in May.

Cultivation of the cucumbers described above, that is, tsukiba, water purification, and quality control, were carried out according to conventional methods throughout the period. The results are shown in Table-5.

From Koro-5's sister, film No. 1 and no. In the 2nd cultivation area, the growth of plant height was moderately suppressed, the difference in maximum yield by season was clearly small, there was no growth fatigue, and throughout all cultivation periods,
It is clear that this mound is a high-yielding mound and can produce stable harvests.

Example 5 and Comparative Examples 15 to 21 A tomato cultivation experiment was conducted using the vibrator house and the material borrowed from the same as used in Example 3. I sowed tomatoes (variety: large size Zuiko) on August 15th, planted 9 plants/tsubote naruyouko in the pipe house on October 4th, and from January 3rd,
Ship collection has begun. Cultivation of the above tomatoes, i.e. straw, fertilization,
Irrigation and temperature control were conducted in accordance with customary methods.

As is clear from the results of Hair-6, film No. 1
Compared to other covered plots, in covered plots, plant height is appropriately controlled, seasonal yields are consistently high, and stable yields are achieved, and the incidence of concentric and radial fissures in harvested tomatoes is extremely low. Recognize.

Example 6 and Biyoku Example 22 On August 10th, green peppers (variety: Shinsakikake) were scraped and 1
On October 7th, film No. 1 shown below was released. -1 (Example 6) and film No. -3 (Hibuki Example 22) was covered with greenhouse cultivation. Biman cultivation was carried out according to conventional methods using compost, watering, and temperature control throughout the period.

The collection was held from October 20th to the end of May, and film No. In the 1st coverage area, film No. Compared to the 3rd crop, the phenomenon of fatigue was not observed, the difference in yield between seasons was extremely small, the loss of hashimata increased, and the effect of improving crystallinity was observed, resulting in high profits.

[Brief explanation of drawings]

Figure 1 shows film No. 1 used in Examples and Comparatives. 1~
Film no. It is a figure of the light transmission curve by wavelength of 10. Patent applicant: Nippon Carbide Industrial Company Representative Patent attorney: Heikichi Odajima Patent attorney: Hisashi Eisaka Patent attorney: Yoji Ezumi

Claims (1)

[Scope of Claims] A fruit and vegetable plant having the following light transmission properties: (a) substantially blocking the transmission of light having a wavelength of at least 370 nm or less; (b) within the wavelength range from 440 nm to 700 nm; (c) the average transmittance of light with a wavelength between 440 and 590 nm is at least 85%; (d) 600 to 700n
(e) the ratio of the average transmittance of light with wavelengths between 400 and 500 nm to the average transmittance of light with wavelengths between 600 and 700 nm is at least 75% or more; 1.2 A method for cultivating fresh fruits and vegetables, characterized by cultivating them under an agricultural covering material consisting of a blue-colored transparent synthetic resin film or plate.