CN117716947A - Method for inhibiting color change of white strawberry peel and keeping original commodity of white strawberry peel - Google Patents
Method for inhibiting color change of white strawberry peel and keeping original commodity of white strawberry peel Download PDFInfo
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- CN117716947A CN117716947A CN202311810036.1A CN202311810036A CN117716947A CN 117716947 A CN117716947 A CN 117716947A CN 202311810036 A CN202311810036 A CN 202311810036A CN 117716947 A CN117716947 A CN 117716947A
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- strawberry
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- strawberries
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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- Cultivation Of Plants (AREA)
Abstract
The invention belongs to the field of agriculture, and relates to a method for inhibiting color change of white strawberry peel so as to maintain original commodity, which comprises the following steps: for the strawberries planted in the greenhouse, the covering material at the top of the strawberry greenhouse is glass or a greenhouse film meeting the following conditions: the transmittance of ultraviolet light with the wavelength less than or equal to 350nm is not more than 10 percent, and the transmittance of ultraviolet light with the wavelength more than 350nm is more than 90 percent; the above-mentioned covering material was used throughout the planting period of the strawberries. The invention has no obvious influence on the yield and quality of the strawberries basically, and can inhibit the white strawberry peel from turning powder/red, thereby maintaining the original commodity.
Description
Technical Field
The invention belongs to the field of agriculture, and particularly relates to a method for inhibiting color change of white strawberry peel, namely a method for inhibiting powder/red turning of the white strawberry peel.
Background
The strawberry is perennial herbaceous plant of the genus strawberry of the family Rosaceae, the fruit of the strawberry is soft and succulent, sweet and sour, and delicious, and contains various nutritional ingredients, and is known as 'fruit queen'. In recent years, the strawberry industry in China rapidly develops, and the strawberry industry becomes the first country of production and consumption in the world. Along with the development of facility cultivation technology, strawberries become high-picking fruits with winter characteristics, the economic benefit is high, the development of leisure agriculture and travel industry is also driven, the trend of diversification of strawberry varieties in recent years is also shown, the current common main cultivated strawberry varieties are varieties with red fruit surfaces, namely red strawberries, besides, the strawberry varieties with white and pink peel, especially white strawberries are unique rare colors, become high-end varieties in the strawberry kingdom and are sought after by consumers, and the selling price of the strawberry varieties is more than 50% higher than that of the common red strawberries. However, the white of the peel is found to be unstable when the white strawberry varieties are planted in various places, the normal white of the peel is shown in 12 months in winter to 2 months in the coming year, but the peel gradually turns into pink or even light red from 2 months later to 5 months before the strawberry is finished, so that the commodity of the strawberry fruits is greatly influenced, the white strawberry powder is shown in some places in the last 2 months, and the pink strawberry varieties also turn into dark red in color.
The main reason for reddening the color of strawberries is the synthesis of anthocyanin, which is an important flavonoid compound in plants and plays an important role in the formation of the color of flowers, fruits and other organs of plants and in the antioxidation process. Many factors influencing anthocyanin synthesis include fertilizer, temperature, illumination and the like. Anthocyanin formation in plant tissue depends on optical signals, including in particular light intensity, light quality and photoperiod.
The strawberry greenhouse is a greenhouse specially used for strawberry planting. Greenhouse frames are typically made of steel pipe, bamboo, wood or plastic; the greenhouse is made of transparent, semitransparent or opaque materials. The top of the greenhouse is generally made of transparent or semitransparent materials, such as glass, plastic films (soft and hard) and hard plastic plates, and the glass is commonly made of common flat glass or float glass; common plastic films include Polyethylene (PE) films, ethylene-vinyl acetate (EVA) films, polyvinyl chloride (PVC) films, polyolefin (PO) films, and light conversion films; typical hard plastic panels, mainly Polycarbonate (PC), include hollow panels and corrugated panels.
In order to solve the above problems, the current prior art adopts the following methods:
the method comprises the following steps: the fruit bagging method is used for keeping the white fruits, but the method is time-consuming, the strawberry fruits are in a continuous flowering and fruiting mode, individual bagging is difficult to achieve, diseases and rot are easy to occur when the strawberry fruits are bagged, and whether the strawberry fruits are ripe or not cannot be judged.
The second method is as follows: the strawberry leaves are adopted to shield sunlight and directly irradiate the fruits, the fruits of the strawberries which are partially shielded by the leaves are indeed whitened, but many of the strawberries which are not shielded still have pink or red color.
And a third method: the sun-shading net is adopted to shade the sun, namely, the sun-shading net is arranged at the top of the greenhouse, the polypropylene film (PP) is a main material for manufacturing the sun-shading net, and although the sun-shading net has a certain effect, the strawberries are crops like sunlight, and the effect on the yield and quality of the strawberries is obvious after shading, so that the strawberries cannot be lost.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method which has no obvious influence on the yield and quality of strawberries basically and can inhibit white strawberry peel color from turning powder/red.
In order to solve the technical problems, the invention provides a method for inhibiting the color change of white strawberry peel, which comprises the following steps:
for the strawberries planted in the greenhouse, the covering material at the top of the strawberry greenhouse is glass or a greenhouse film meeting the following conditions:
the transmittance of ultraviolet light with the wavelength less than or equal to 350nm is not more than 10 percent, and the transmittance of ultraviolet light with the wavelength more than 350nm is more than 90 percent;
the above-mentioned covering material was used throughout the planting period of the strawberries.
The greenhouse film is a light conversion film.
According to the setting mode, white or pink strawberry varieties are planted in the greenhouse, so that the white or pink of the fruits is kept not to be deepened (namely, the white strawberry peel color is inhibited from turning into powder or red) in the whole harvesting period of the strawberries, the commodity of the fruits is kept, meanwhile, lighting of the strawberries is not affected, and the overall yield and quality of the strawberries are guaranteed.
In the invention, the following problems are fully considered:
ultraviolet light in solar spectrum can be divided into super strong effect wave (UV-C, 220-280 nm), jiang Xiaoying wave (UV-B, 280-320 nm) and weak effect wave (UV-A, 320-380 nm) according to different biological effects; as most of (UV-C, 220-280 nm) is absorbed and blocked by the atmosphere, the sunlight reaching the ground has different ultraviolet cut-off points in different regions, the sunlight ultraviolet cut-off point in the plateau region is 296nm, the ultraviolet cut-off point in the northwest desert region is 297nm, and the ultraviolet cut-off point in the tropical ocean region is 298nm.
According to the invention, the reason for the white powder of the strawberry peel is analyzed, ultraviolet light in a spectrum is found to be a main reason for causing the white powder of the strawberry peel, and further research shows that the ultraviolet light with the wavelength below 350nm has the most obvious influence on the color change. Therefore, consider first: the ideal light-transmitting covering material should have high light transmittance in the Photosynthetically Active Radiation (PAR) region with the wave band of 400-700 nm and low light transmittance in other wave bands; then, the covering material at the top of the strawberry greenhouse is set to meet the following conditions: the transmittance of ultraviolet light with the wavelength less than or equal to 350nm is not more than 10%, and the transmittance of ultraviolet light with the wavelength more than 350nm is more than 90%.
The invention has the following technical advantages: easily obtained materials, no influence on the quality and yield of strawberries, and convenient operation.
The invention can effectively inhibit the gradual powder change phenomenon of the white strawberries in planting, and the invention obtains a solution according to theoretical combination practice.
Drawings
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a film covered strawberry greenhouse;
FIG. 2 is a glass covered strawberry greenhouse;
fig. 3 is a comparison of fruit color at 30 days of 3 months with glass as the cover material (left panel) and PO film as the cover material (right panel).
FIG. 4 is an enlarged schematic view of the fruit of FIG. 3, with the left being glass as the covering material and the right being PO film as the covering material.
Detailed Description
The invention will be further described with reference to the following specific examples, but the scope of the invention is not limited thereto:
example 1: strawberry fruit color under different greenhouse covers
The method comprises the following steps: the variety of the white strawberries is selected to be dreamy, the greenhouse planting period is 5 months from 9 to the next year, and fruits are produced in 12 months; when the white strawberries are transplanted into the greenhouse for planting, covering the top of the strawberry planting greenhouse with the covering materials shown in table 1; then managing according to a conventional greenhouse strawberry cultivation mode; from 12 months to 3 months of the next year, 30 fruits were observed per sample once per month, and the color of the strawberry fruits was observed, and the three results were white, pink and red. The observation mode was observed visually, and the results are shown in Table 1.
Table 1: color observation of strawberry fruits under different greenhouse covers
The glass is glass which satisfies that the transmittance of ultraviolet light with the wavelength less than or equal to 350nm is not more than 10 percent and the transmittance of ultraviolet light with the wavelength more than 350 nm. PO film, PVC film and light conversion film are all conventional commercial products.
It can be seen from table 1 that the fruit colour covered with the glass material remained white at all times, the PO film covered turned off from 2 months to 3 months, the PVC film covered turned off from 2 months to 3 months without darkening, and the light conversion film covered turned off from 3 months to 3 months. The color difference of the strawberry fruits covered by different materials is obvious, and the color difference is particularly shown in fig. 3 and 4.
Example 2 the white strawberry variety in example 1 was changed to "dream loving". The results obtained were not significantly different from those of example 1.
Thus, it is illustrated that the method of the present invention is applicable to all white strawberries.
Experiment 1: average single fruit weight and soluble solids content of strawberries under different greenhouse coverings
Method of implementation (same as example 1): the method comprises the steps of selecting and dreaming strawberries, adopting a high-ridge mode of in-facility land planting, designing 4 treatments, wherein the top of the treatment 1 is covered with glass, the top of the treatment 2 is covered with a po film, the top of the treatment 3 is covered with a Pvc film, the top of the treatment 4 is covered with a light conversion film, carrying out conventional and unified cultivation management after the strawberry is planted, randomly sampling and measuring single fruit weight and solid content each month from 12 months to 3 months, weighing the single fruit weight by adopting an electronic scale (precision 0.01 g), and measuring the solid content of the container by adopting an atagoPAL-1 digital display glycometer.
Table 2: average single fruit weight and soluble solids content of strawberries under different greenhouse coverings
The data in table 2 shows that the average single fruit weight and soluble solids content differences between treatments are not significant, and indirectly demonstrate that the effects of treatments on strawberry yield and sugar content are not significant.
Finally, it should also be noted that the above list is merely a few specific embodiments of the present invention. Obviously, the invention is not limited to the above embodiments, but many variations are possible. All modifications directly derived or suggested to one skilled in the art from the present disclosure should be considered as being within the scope of the present invention.
Claims (5)
1. A method for inhibiting the discoloration of white strawberry peel, which is characterized by comprising the following steps:
for the strawberries planted in the greenhouse, the covering material at the top of the strawberry greenhouse is glass or a greenhouse film meeting the following conditions:
the transmittance of ultraviolet light with the wavelength less than or equal to 350nm is not more than 10%, and the transmittance of ultraviolet light with the wavelength more than 350nm is more than 90%.
2. The method of inhibiting discoloration of white strawberry peel according to claim 1, wherein: the above-mentioned covering material was used throughout the planting period of the strawberries.
3. A method of inhibiting discoloration of white strawberry peel according to claim 1 or 2, wherein: can inhibit white strawberry peel from turning powder or red.
4. A method of inhibiting discoloration of a white strawberry peel according to claim 3, wherein: the greenhouse film is a light conversion film.
5. The method for inhibiting the discoloration of white strawberry peel according to any one of claims 4, wherein: the marketability of the white strawberry fruit was maintained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311810036.1A CN117716947A (en) | 2023-12-27 | 2023-12-27 | Method for inhibiting color change of white strawberry peel and keeping original commodity of white strawberry peel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311810036.1A CN117716947A (en) | 2023-12-27 | 2023-12-27 | Method for inhibiting color change of white strawberry peel and keeping original commodity of white strawberry peel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117716947A true CN117716947A (en) | 2024-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311810036.1A Pending CN117716947A (en) | 2023-12-27 | 2023-12-27 | Method for inhibiting color change of white strawberry peel and keeping original commodity of white strawberry peel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117716947A (en) |
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2023
- 2023-12-27 CN CN202311810036.1A patent/CN117716947A/en active Pending
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