CN114736562A - Method for preventing sunscald and whitening of citrus - Google Patents
Method for preventing sunscald and whitening of citrus Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D101/00—Coating compositions based on cellulose, modified cellulose, or cellulose derivatives
- C09D101/08—Cellulose derivatives
- C09D101/26—Cellulose ethers
- C09D101/28—Alkyl ethers
- C09D101/284—Alkyl ethers with hydroxylated hydrocarbon radicals
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- 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
- A01G13/00—Protecting plants
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D5/00—Fertilisers containing magnesium
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/20—Liquid fertilisers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D105/00—Coating compositions based on polysaccharides or on their derivatives, not provided for in groups C09D101/00 or C09D103/00
- C09D105/06—Pectin; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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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
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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Abstract
The invention discloses a method for preventing sunburning and whitening of citrus, and belongs to the field of citrus planting. The invention comprises the following steps: (1) preparing a spray-whitening coating: stirring and uniformly mixing the film forming agent, the filler and water, sanding, filtering, and taking filtrate to obtain a finished product of the white spraying paint; the film forming agent is prepared from hydroxypropyl methyl cellulose, pectin, 818 seaweed concentrated fertilizer and water; the filler is one or more of talcum powder and titanium dioxide; (2) and (3) white spraying of the whole tree: in sunny days from late 6 months to late 7 months every year and at the temperature of more than 30 ℃, the first time of whole tree whitening is carried out on the citrus trees by using the whitening paint, the second time of whole tree whitening is carried out in the middle 8 months by using the whitening paint, and the third time of whole tree whitening is carried out in the middle 9 months by using the whitening paint. The invention effectively prevents the citrus from being burned in the sun under the condition of low cost, and simultaneously avoids the problems of cleaning and eating safety of picked fruits and the problems of time and labor consumption of manual coating caused by the traditional whitening mode.
Description
Technical Field
The invention belongs to the technical field of planting of oranges, and particularly relates to a method for preventing sunburn and whitening of oranges.
Background
Citrus is a subtropical fruit tree which is warm and moist in nature, and excessive temperature can cause damage to the growing fruit of the citrus, such as sunburn. In the hot and dry season of summer and autumn for 7-9 months, the water in the orchard is insufficient, the sunlight directly irradiates fruits, branches and leaves to enable the surface temperature of the fruits to reach 45 ℃, once the surface temperature is accumulated for 3 hours, the fruit peels can turn yellow, and the damage to the fruit peels can not be recovered for more than 6 hours. Sunburn is a major hazard to unripe fruits, unripe leaves, and bare branches. The fruits are aggravated along with the sunburn degree, the centers of the fruits are dry scars sunken, the surrounding pericarp grows to cause deformity, the juice is granulated and withered, and the edible value is lost; when yellow spots on the leaf surface become dark green and become more serious with sunburn, the leaf tissue of the part dies and is easily infected with ulcer when the yellow spots turn brown, so that the leaf falls off.
In order to prevent the citrus from sunburning, fruit growers mostly adopt modes of sticking paper, manually whitening, pulling a sunshade net and the like to prevent and control the sunburning, because the method has large labor amount and generates more labor cost when being used in large-scale orchards, and meanwhile, the manual whitening method mostly adopts a formula of 'lime + glue (containing plasticizer and thickener)' to paint the fruits to prevent the 'sunburning', although the method has good protection effect, the plasticizer and the thickener are contained, so that not only rainwater can not be washed clean, but also new problems are generated on the edible safety of the fruits, and therefore, the technology cannot be widely popularized.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a method for increasing the soluble solid content and the coloring degree of citrus fruits, which can effectively prevent the citrus fruits from being sunburned under the condition of low cost, and simultaneously avoid the problems of fruit cleaning after picking, fruit edible safety and labor waste caused by the traditional whitening mode.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a method for preventing suntan and whitening of oranges comprises the following steps:
(1) preparing a spray-whitening coating: stirring and uniformly mixing the film forming agent, the filler and water, sanding, filtering, and taking filtrate to obtain a finished product of the white spraying paint;
the film forming agent is prepared from hydroxypropyl methyl cellulose, pectin, 818 seaweed concentrated fertilizer and water;
the filler is any one or a combination of more of talcum powder and titanium dioxide;
(2) and (3) white spraying of the whole tree: in sunny days from late 6 months to late 7 months every year and at the temperature of more than 30 ℃, the first time of whole tree whitening is carried out on the citrus trees by using the whitening paint, the second time of whole tree whitening is carried out in the middle 8 months by using the whitening paint, and the third time of whole tree whitening is carried out in the middle 9 months by using the whitening paint.
In the above technical solution, preferably, the weight ratio of the film forming agent, the filler and the water in the step (1) is 5-10: 3-6: 100.
in the above technical solution, preferably, the preparation method of the film forming agent in step (1) is as follows: dissolving hydroxypropyl methyl cellulose with water to prepare mother liquor with the mass concentration of 3.0%, dissolving pectin with water to prepare mother liquor with the mass concentration of 3.0%, dissolving 818 seaweed concentrated fertilizer with water to prepare mother liquor with the mass concentration of 4.0%, and mixing the hydroxypropyl methyl cellulose mother liquor, the pectin mother liquor, the 818 seaweed concentrated fertilizer mother liquor and the water according to the weight ratio of 0.5-1.2: 0.6-1.0: 0.8-1.5: 100 weight percent to prepare the original solution of the adhesive film-forming agent, namely the film-forming agent.
According to the technical scheme, preferably, the filler in the step (1) is prepared from talcum powder and titanium dioxide according to the weight ratio of 1: 1 by weight ratio.
According to the technical scheme, preferably, the granularity of the filler in the step (1) is more than or equal to 800 meshes.
Preferably, in the above technical solution, the citrus variety is citrus reticulata.
The invention has the beneficial effects that:
the invention can effectively prevent the citrus from being sunburned under the condition of low cost, and simultaneously avoids the problems of fruit cleaning after picking, edible safety of the fruit and time and labor waste of manual coating caused by the traditional whitening mode.
The spray-whitening coating has the function of a foliar fertilizer, and can promote the growth of citrus fruits; the spray-whitening coating does not contain plasticizer and thickener, and can be completely washed clean with moderate rainfall after the whole citrus is sprayed with white for about 6 times, so that the problems of post-harvest fruit cleaning and edible safety caused by the traditional whitening mode are solved; the white spraying coating is used for spraying white on the whole tree, is simple and convenient to operate, and solves the problem that the traditional manual coating is time-consuming and labor-consuming.
The hydroxypropyl methyl cellulose and the pectin in the components of the whitening spray are main film forming agents, the 818 seaweed concentrated fertilizer in the components can be used as a foliar spray fertilizer, and has certain adhesiveness, and the film forming effect can be improved by combining the seaweed concentrated fertilizer with the hydroxypropyl methyl cellulose and the pectin.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention are described clearly and completely below, and it is obvious that the described embodiments are some, not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A method for preventing suntan and whitening of oranges comprises the following steps:
(1) preparing a spray-whitening coating: the film forming agent, the filler and the water are mixed according to the weight ratio of 5: 3: 100, stirring and mixing uniformly by using a stirrer, transferring to a sand mill, sanding for 1 hour, filtering by using gauze, and taking filtrate to obtain a finished product of the white spraying coating;
the filler is talcum powder, and the granularity of the talcum powder is 800 meshes.
The film forming agent is prepared from hydroxypropyl methyl cellulose, pectin, 818 seaweed concentrated fertilizer and water; the preparation method of the film forming agent comprises the following steps: dissolving hydroxypropyl methyl cellulose with water to prepare mother liquor with the mass concentration of 3.0%, dissolving pectin with water to prepare mother liquor with the mass concentration of 20.0%, dissolving 818 seaweed concentrated fertilizer with water to prepare mother liquor with the mass concentration of 4.0%, and mixing the hydroxypropyl methyl cellulose mother liquor, the pectin mother liquor, the 818 seaweed concentrated fertilizer mother liquor and the water according to the ratio of 1: 1: 1: 100 weight percent to prepare a stock solution of the adhesive film-forming agent, namely the film-forming agent.
The pectin is low-ester water-soluble pectin and is a sunflower disc extract; the production standard GB25533 is implemented, and the product is produced by Xinjiang Fufeng Biotechnology limited.
The 818 seaweed concentrated fertilizer comprises humic acid, seaweed polysaccharide, NPK and other elements, and the finished product is black paste produced by Qingdao Hai Daobi Limited company.
(2) And (3) white spraying of the whole tree: in sunny days from late 6 months to late 7 months every year and at the temperature of more than 30 ℃, the first time of whole tree whitening is carried out on the citrus trees by using the whitening paint, the second time of whole tree whitening is carried out in the middle 8 months by using the whitening paint, and the third time of whole tree whitening is carried out in the middle 9 months by using the whitening paint.
Example 2
A method for preventing sunburning and whitening of citrus comprises the following steps:
(1) preparing a spray-whitening coating: the weight ratio of the film forming agent to the filler to the water is 10: 6: 100, stirring and mixing uniformly by using a stirrer, transferring to a sand mill, sanding for 1 hour, filtering by using gauze, and taking filtrate to obtain a finished product of the white spraying coating;
the film forming agent is prepared from hydroxypropyl methyl cellulose, pectin, 818 seaweed concentrated fertilizer and water; the preparation method of the film forming agent comprises the following steps: dissolving hydroxypropyl methyl cellulose with water to prepare mother liquor with the mass concentration of 3.0%, dissolving pectin with water to prepare mother liquor with the mass concentration of 3.0%, dissolving 818 seaweed concentrated fertilizer with water to prepare mother liquor with the mass concentration of 4.0%, and mixing the hydroxypropyl methyl cellulose mother liquor, the pectin mother liquor, the 818 seaweed concentrated fertilizer mother liquor and the water according to the ratio of 1: 1: 1: 100 weight percent to prepare the original solution of the adhesive film-forming agent, namely the film-forming agent.
The filler is talcum powder, and the granularity of the talcum powder is 800 meshes.
The pectin and the 818 seaweed fertilizer concentrate were as in example 1.
(2) And (3) white spraying of the whole tree: in sunny days from late 6 months to late 7 months every year and at the temperature of more than 30 ℃, the first time of whole tree whitening is carried out on the citrus trees by using the whitening paint, the second time of whole tree whitening is carried out in the middle 8 months by using the whitening paint, and the third time of whole tree whitening is carried out in the middle 9 months by using the whitening paint.
Example 3
A method for preventing sunburning and whitening of citrus comprises the following steps:
(1) preparing a spray-whitening coating: the weight ratio of the film forming agent to the filler to the water is 15: 9: 100, stirring and mixing uniformly by using a stirrer, transferring to a sand mill, sanding for 1 hour, filtering by using gauze, and taking filtrate to obtain a finished product of the white spraying coating;
the film forming agent is prepared from hydroxypropyl methyl cellulose, pectin, 818 seaweed concentrated fertilizer and water; the preparation method of the film forming agent comprises the following steps: dissolving hydroxypropyl methyl cellulose with water to prepare mother liquor with the mass concentration of 3.0%, dissolving pectin with water to prepare mother liquor with the mass concentration of 3.0%, dissolving 818 seaweed concentrated fertilizer with water to prepare mother liquor with the mass concentration of 4.0%, and mixing the hydroxypropyl methyl cellulose mother liquor, the pectin mother liquor, the 818 seaweed concentrated fertilizer mother liquor and the water according to the ratio of 1: 1: 1: 100 weight percent to prepare the original solution of the adhesive film-forming agent, namely the film-forming agent.
The filler is talcum powder, and the granularity of the talcum powder is 800 meshes.
The pectin and the 818 seaweed fertilizer concentrate were as in example 1.
(2) And (3) white spraying of the whole tree: in sunny days from late 6 months to late 7 months every year and at the temperature of more than 30 ℃, the first time of whole tree whitening is carried out on the citrus trees by using the whitening paint, the second time of whole tree whitening is carried out in the middle 8 months by using the whitening paint, and the third time of whole tree whitening is carried out in the middle 9 months by using the whitening paint.
Example 4
A method for preventing suntan and whitening of oranges comprises the following steps:
(1) preparing a spray-whitening coating: the weight ratio of the film forming agent to the filler to the water is 6: 5: 100, stirring, uniformly mixing, sanding, filtering, and taking filtrate to obtain a finished product of the white spraying paint;
the film forming agent is prepared from hydroxypropyl methyl cellulose, pectin, 818 seaweed concentrated fertilizer and water; the preparation method of the film forming agent comprises the following steps: dissolving hydroxypropyl methyl cellulose with water to prepare mother liquor with the mass concentration of 3.0%, dissolving pectin with water to prepare mother liquor with the mass concentration of 3.0%, dissolving 818 seaweed concentrated fertilizer with water to prepare mother liquor with the mass concentration of 4.0%, and mixing the hydroxypropyl methyl cellulose mother liquor, the pectin mother liquor, the 818 seaweed concentrated fertilizer mother liquor and the water according to the weight ratio of 0.5: 1.0: 0.8: 100 weight percent to prepare the original solution of the adhesive film-forming agent, namely the film-forming agent.
The filler is talcum powder, and the granularity of the talcum powder is 800 meshes.
The pectin and the 818 seaweed fertilizer concentrate were as in example 1.
(2) And (3) whole tree whitening: in sunny days from late 6 months to late 7 months every year and at the temperature of more than 30 ℃, the first time of whole tree whitening is carried out on the citrus trees by using the whitening paint, the second time of whole tree whitening is carried out in the middle 8 months by using the whitening paint, and the third time of whole tree whitening is carried out in the middle 9 months by using the whitening paint.
Example 5
A method for preventing sunburning and whitening of citrus comprises the following steps:
(1) preparing a spray-whitening coating: the weight ratio of the film forming agent to the filler to the water is 10: 6: 100, stirring, uniformly mixing, sanding, filtering, and taking filtrate to obtain a finished product of the white spraying paint;
the film forming agent is prepared from hydroxypropyl methyl cellulose, pectin, 818 seaweed concentrated fertilizer and water; the preparation method of the film forming agent comprises the following steps: dissolving hydroxypropyl methyl cellulose with water to prepare mother liquor with the mass concentration of 3.0%, dissolving pectin with water to prepare mother liquor with the mass concentration of 3.0%, dissolving 818 seaweed concentrated fertilizer with water to prepare mother liquor with the mass concentration of 4.0%, and mixing the hydroxypropyl methyl cellulose mother liquor, the pectin mother liquor, the 818 seaweed concentrated fertilizer mother liquor and the water according to the weight ratio of 1.2: 0.6: 1.5: 100 weight percent to prepare the original solution of the adhesive film-forming agent, namely the film-forming agent.
The filler is titanium dioxide; the granularity of the titanium dioxide is 800 meshes.
(2) And (3) white spraying of the whole tree: in sunny days from late 6 months to late 7 months every year and at the temperature of more than 30 ℃, the first time of whole tree whitening is carried out on the citrus trees by using the whitening paint, the second time of whole tree whitening is carried out in the middle 8 months by using the whitening paint, and the third time of whole tree whitening is carried out in the middle 9 months by using the whitening paint.
Example 6
A method for preventing sunburning and whitening of citrus comprises the following steps:
(1) preparing a spray-whitening coating: the weight ratio of the film forming agent to the filler to the water is 8: 5: 100, stirring, uniformly mixing, sanding, filtering, and taking filtrate to obtain a finished product of the white spraying paint;
the film forming agent is prepared from hydroxypropyl methyl cellulose, pectin, 818 seaweed concentrated fertilizer and water; the preparation method of the film forming agent comprises the following steps: dissolving hydroxypropyl methyl cellulose with water to prepare mother liquor with the mass concentration of 3.0%, dissolving pectin with water to prepare mother liquor with the mass concentration of 3.0%, dissolving 818 seaweed concentrated fertilizer with water to prepare mother liquor with the mass concentration of 4.0%, and mixing the hydroxypropyl methyl cellulose mother liquor, the pectin mother liquor, the 818 seaweed concentrated fertilizer mother liquor and the water according to the weight ratio of 0.8: 0.9: 1: 100 weight percent to prepare the original solution of the adhesive film-forming agent, namely the film-forming agent.
The filler is prepared from talcum powder and titanium dioxide according to the weight ratio of 1: 1 by weight ratio; the granularity of the filler is 800 meshes.
(2) And (3) white spraying of the whole tree: in sunny days from late 6 months to late 7 months every year and at the temperature of more than 30 ℃, the first time of whole tree whitening is carried out on the citrus trees by using the whitening paint, the second time of whole tree whitening is carried out in the middle 8 months by using the whitening paint, and the third time of whole tree whitening is carried out in the middle 9 months by using the whitening paint.
Comparative example 1
A method for preventing suntan and whitening of oranges comprises the following steps:
(1) preparing a spray-whitening coating: the weight ratio of the film forming agent to the filler to the water is 10: 6: 100, stirring and mixing uniformly by using a stirrer, transferring to a sand mill, sanding for 1 hour, filtering by using gauze, and taking filtrate to obtain a finished product of the white spraying coating;
the film forming agent is prepared from hydroxypropyl methyl cellulose, pectin and water; the preparation method of the film forming agent comprises the following steps: dissolving hydroxypropyl methylcellulose into water to prepare mother liquor with the mass concentration of 3.0%, dissolving pectin into water to prepare mother liquor with the mass concentration of 3.0%, and mixing the hydroxypropyl methylcellulose mother liquor, the pectin mother liquor and the water according to the proportion of 1: 1: 100 weight percent to prepare a stock solution of the adhesive film-forming agent, namely the film-forming agent.
The filler is talcum powder; the granularity of the talcum powder is 800 meshes.
(2) And (3) white spraying of the whole tree: in sunny days from late 6 months to late 7 months every year and at the temperature of more than 30 ℃, the first time of whole tree whitening is carried out on the citrus trees by using the whitening paint, the second time of whole tree whitening is carried out in the middle 8 months by using the whitening paint, and the third time of whole tree whitening is carried out in the middle 9 months by using the whitening paint.
Comparative example 2
No treatment was used except that the same amount of clear water was sprayed.
By taking the citrus wok variety as a test object and processing the citrus wok variety by the methods of the examples 1-3 and the comparative examples 1-2, the film forming effect (three levels of thin, moderate and thick), the smoothness of a spray head (two levels of smoothness and blockage), the medium rainfall erosion resistance frequency (times) and the average sunscald rate (%) after fruit harvesting are compared and analyzed to obtain the following table I:
table one:
as can be seen from the data in the table, the technology for implementing the sunburning prevention whitening of the citrus can effectively reduce the sunburning rate of the citrus fruits and increase the weight of the citrus fruits. The white spraying coating has the characteristics of good film forming effect and rain wash resistance, and the commercial fruit rate is obviously improved.
Although the present invention has been described in terms of preferred embodiments, and while the foregoing examples, comparative examples, and descriptions have been set forth to illustrate the principles of the invention, it is not intended to limit the invention to the particular embodiments, but rather, to cover modifications and variations of the invention.
Claims (6)
1. The method for preventing sunburning and whitening of citrus is characterized by comprising the following steps:
(1) preparing a spray-whitening coating: stirring and uniformly mixing the film forming agent, the filler and water, sanding, filtering, and taking filtrate to obtain a finished product of the white spraying paint;
the film forming agent is prepared from hydroxypropyl methyl cellulose, pectin, 818 seaweed concentrated fertilizer and water;
the filler is any one or a combination of more of talcum powder and titanium dioxide;
(2) and (3) white spraying of the whole tree: in sunny days from late 6 months to late 7 months every year and at the temperature of more than 30 ℃, the first time of whole tree whitening is carried out on the citrus trees by using the whitening paint, the second time of whole tree whitening is carried out in the middle 8 months by using the whitening paint, and the third time of whole tree whitening is carried out in the middle 9 months by using the whitening paint.
2. The orange anti-sunburn whitening method according to claim 1, wherein: the weight ratio of the film forming agent, the filler and the water in the step (1) is 5-10: 3-6: 100.
3. a method of anti-sunburn whitening of citrus fruit as set forth in claim 1, wherein: the preparation method of the film forming agent in the step (1) comprises the following steps: dissolving hydroxypropyl methyl cellulose with water to prepare mother liquor with the mass concentration of 3.0%, dissolving pectin with water to prepare mother liquor with the mass concentration of 3.0%, dissolving 818 seaweed concentrated fertilizer with water to prepare mother liquor with the mass concentration of 4.0%, and mixing the hydroxypropyl methyl cellulose mother liquor, the pectin mother liquor, the 818 seaweed concentrated fertilizer mother liquor and the water according to the weight ratio of 0.5-1.2: 0.6-1.0: 0.8-1.5: 100 weight percent to prepare the original solution of the adhesive film-forming agent, namely the film-forming agent.
4. A method of anti-sunburn whitening of citrus fruit as set forth in claim 1, wherein: the filler in the step (1) is prepared from talcum powder and titanium dioxide according to the proportion of 1: 1 by weight ratio.
5. A method of anti-sunburn whitening of citrus fruit as set forth in claim 1, wherein: the granularity of the filler in the step (1) is more than or equal to 800 meshes.
6. A method of anti-sunburn whitening of citrus fruit as set forth in claim 1, wherein: the citrus is a Wo citrus.
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| CN202210462901.7A CN114736562B (en) | 2022-04-28 | 2022-04-28 | Method for preventing sunscald and whitening of citrus |
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| CN108587349A (en) * | 2018-03-27 | 2018-09-28 | 广西桂洁农业开发有限公司 | A kind of citrus anti-day bright spray whitening method |
| CN110073866A (en) * | 2019-05-08 | 2019-08-02 | 广西壮族自治区农业科学院园艺研究所 | A kind of method that citrusfruit anti-day is bright |
| CN111066817A (en) * | 2019-12-27 | 2020-04-28 | 河北萌帮水溶肥料股份有限公司 | Protective agent for relieving sunscald of fruits and preparation process thereof |
| CN111320508A (en) * | 2020-04-21 | 2020-06-23 | 广西垂青生物科技有限公司 | Spraying type anti-sunburn foliar fertilizer and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107474743A (en) * | 2017-08-29 | 2017-12-15 | 天津市瀚葳园林植物保护技术有限公司 | A kind of sun-proof white-out agent of antifreeze summer in plant trunk winter |
| CN108587349A (en) * | 2018-03-27 | 2018-09-28 | 广西桂洁农业开发有限公司 | A kind of citrus anti-day bright spray whitening method |
| CN110073866A (en) * | 2019-05-08 | 2019-08-02 | 广西壮族自治区农业科学院园艺研究所 | A kind of method that citrusfruit anti-day is bright |
| CN111066817A (en) * | 2019-12-27 | 2020-04-28 | 河北萌帮水溶肥料股份有限公司 | Protective agent for relieving sunscald of fruits and preparation process thereof |
| CN111320508A (en) * | 2020-04-21 | 2020-06-23 | 广西垂青生物科技有限公司 | Spraying type anti-sunburn foliar fertilizer and preparation method thereof |
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