CN113317321A - Plant antifreezing agent and preparation method and application thereof - Google Patents
Plant antifreezing agent and preparation method and application thereof Download PDFInfo
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- A01N43/64—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with three nitrogen atoms as the only ring hetero atoms
- A01N43/647—Triazoles; Hydrogenated triazoles
- A01N43/653—1,2,4-Triazoles; Hydrogenated 1,2,4-triazoles
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- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
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- A01N37/44—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids
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- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
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Abstract
The invention belongs to the field of plant antifreezing, and particularly relates to a plant antifreezing agent, and a preparation method and application thereof. The plant antifreezing agent comprises the following components in parts by mass: 4.5-5.5 parts of polyvinyl alcohol, 4.5-5.5 parts of diniconazole, 4.5-5.5 parts of aminobenzoic acid, 0.8-4.2 parts of sodium carboxymethylcellulose, 1-6 parts of 6-benzyladenine, 0.2-1.8 parts of mannitol, 0.2-2 parts of monopotassium phosphate, 0.1-2 parts of pepper leaf extract, 5-40 parts of ethylene glycol and 11-20 parts of water. The antifreezing agent prepared by the invention is reasonable in proportion, has the advantages of good light transmittance, moderate viscosity, remarkable antifreezing effect and strong rain and snow scouring resistance, can provide nutrients required by plant growth and germination, fully protects plants, particularly young pepper trees and other non-cold-resistant plants from being frozen at low temperature in winter, remarkably improves the overwintering survival rate, prevents the young trees from stripping, does not need to shear autumn tips, and is nontoxic and harmless in components and friendly to the environment.
Description
Technical Field
The invention relates to the field of plant antifreezing, and particularly relates to a plant antifreezing agent, and a preparation method and application thereof.
Background
The cold resistance of the zanthoxylum is always a key factor influencing the success of introduction and cultivation of the zanthoxylum, in particular to the Japanese stingless zanthoxylum, the origin of which belongs to a marine climate area, the zanthoxylum is warm and moist in winter, and the annual average temperature is 14-15.5 ℃. Shijiazhuang, Baoding, Chachentai, Handan and the like in Hebei province are main breeding and cultivating test areas of the stingless pepper, the average temperature in winter is lower than 0 ℃, and the lowest temperature can reach below-20 ℃. When the temperature is below-10 ℃, the young Chinese prickly ash tree can be stripped, and the low temperature below-15 ℃ can be too long in duration, so that the big Chinese prickly ash tree can be seriously frozen and even die. The existing antifreezing agent has poor antifreezing effect and cannot solve the phenomenon that the pepper is frozen or stripped.
Disclosure of Invention
Aiming at the defects in the prior art, the plant antifreezing agent provided by the invention has the advantages of good light transmittance, moderate viscosity and rain and snow erosion resistance, can provide nutrients required by plant growth and germination, has an obvious antifreezing effect, prevents saplings from stripping, does not need to cut off autumn tips, and saves labor cost.
In order to achieve the purpose of the invention, the embodiment of the invention adopts the following technical scheme:
a plant antifreezing agent comprises the following components in parts by mass: 4.5-5.5 parts of polyvinyl alcohol, 4.5-5.5 parts of diniconazole, 4.5-5.5 parts of aminobenzoic acid, 0.8-4.2 parts of sodium carboxymethylcellulose, 1-6 parts of 6-benzyladenine, 0.2-1.8 parts of mannitol, 0.2-2 parts of monopotassium phosphate, 0.1-2 parts of pepper leaf extract, 5-40 parts of ethylene glycol and 11-20 parts of water.
The polyvinyl alcohol has good film forming property, promotes the surface of the plant to form a protective film, improves the water retention capacity of the plant, and simultaneously effectively avoids heat loss. Diniconazole has natural antibacterial and bactericidal effects, has wide antibacterial spectrum, and ensures normal growth of plants. The aminobenzoic acid has the effect of improving the viscosity of the antifreezing agent and improving the rain and snow scouring resistance of the antifreezing agent. The sodium carboxymethylcellulose is added, so that the generation of flocculent substances can be reduced, the solution is dissolved more sufficiently, the film forming effect of the antifreezing agent can be improved by cooperating with polyvinyl alcohol, and the viscosity of the antifreezing agent can be improved by cooperating with aminobenzoic acid; 6-benzyl adenine is called 6-BA for short, effectively inhibits the activity of DNA enzyme, RNA enzyme and protease in the plant body, improves the frost damage resistance of the plant, and has the effects of green protection and aging resistance. The pepper leaf extract contains various amino acids, can provide rich nutrition for plant growth, and contains antioxidant active substances such as soluble polysaccharide and the like, so that the antioxidant capacity of the plant can be improved; the monopotassium phosphate provides nutrients for plants, makes up the shortage of reserved nutrients of the plants, maintains the balance of the nutrients of the plants, can improve the activity of antioxidase in cells, enhances the antioxidant capacity of plant cells by cooperating with the pepper leaf extract, reduces the damage to a membrane system, can also improve the content of soluble protein in plant leaves, increases the content of bound water in the cells, and improves the water retention performance of the plants by cooperating with polyvinyl alcohol. The ethylene glycol can avoid freezing in cells and cell freezing dehydration, improve the adaptability and resistance of plants to adverse environments such as low-temperature freezing injury and the like, and the mannitol can adjust the freezing degree of the antifreeze and synergistically reduce the freezing point of a plant antifreeze system, thereby ensuring that the antifreeze can be normally used in severe cold winter below-20 ℃. The applicant finds in research that the zanthoxylum bungeanum leaf extract can increase the transparency of the antifreezing agent consisting of the components and improve the light transmittance of plants, and the zanthoxylum bungeanum leaf extract contains amide which is specific to zanthoxylum bungeanum and has smoothness and can promote the adhesion of the antifreezing agent and a trunk.
The antifreezing agent prepared by adopting the mass parts is reasonable in proportion, has the advantages of moderate viscosity, remarkable antifreezing effect and strong rain and snow scouring resistance, can provide nutrients required by plant growth and germination, fully protects plants from low-temperature freezing damage in winter, and remarkably improves the overwintering survival rate. And the components of the antifreezing agent are nontoxic and harmless and are environment-friendly.
The inventor finds out in experiments that the plant antifreezing agent obtained by proportioning the components in the above range is not all suitable for young trees of partial varieties such as young Chinese prickly ash trees, and experimental researches show that the plant antifreezing agent has the following preferred ranges in parts by weight: 4.5-5.5 parts of polyvinyl alcohol, 4.5-5.5 parts of diniconazole, 4.5-5.5 parts of aminobenzoic acid, 1.8-2.2 parts of sodium carboxymethylcellulose, 1-6 parts of 6-benzyladenine, 0.2-1 part of mannitol, 0.5-2 parts of monopotassium phosphate, 0.2-1.8 parts of pepper leaf extract, 5-40 parts of ethylene glycol and 11-20 parts of water. The preferable range has an excellent protective effect on the young trees, has good light transmittance, is beneficial to raising the temperature of plants, can prevent the young trees from stripping, and does not need to cut autumn tips.
Preferably, the plant antifreezing agent comprises the following components in parts by mass: 4.8-5.2 parts of polyvinyl alcohol, 4.8-5.0 parts of diniconazole, 5.0-5.2 parts of aminobenzoic acid, 1.9-2.1 parts of sodium carboxymethylcellulose, 3-5 parts of 6-benzyladenine, 0.5-1 part of mannitol, 1-1.6 parts of monopotassium phosphate, 0.5-1.6 parts of pepper leaf extract, 10-30 parts of ethylene glycol and 12-18 parts of water.
Preferably, the extraction process of the zanthoxylum bungeanum leaf extract comprises the following steps: squeezing folium Zanthoxyli Bungeani to obtain juice, which is folium Zanthoxyli Bungeani extract. The process can select a conventional juicing mode, for example, a pulverizer is used for pulverizing the pepper leaves and then filtering or centrifuging to remove the pulverized pepper leaf residues, the rotating speed of the pulverizer can select 12000-18000 r/min, and the time is 8-12 min.
Preferably, the extraction process of the zanthoxylum bungeanum leaf extract further comprises the following steps: and (4) sieving the juice after juicing by a 180-230-mesh sieve.
The invention also provides a preparation method of the plant antifreeze, which comprises the following steps:
step a, weighing the components according to the mass part ratio of the plant antifreezing agent; dissolving the polyvinyl alcohol, the diniconazole and the aminobenzoic acid by using 10-15 parts of water to obtain a first mixed solution;
b, adding the sodium carboxymethylcellulose into the first mixed solution, uniformly mixing, adding 1-5 parts of water for dilution, and then sequentially adding the 6-benzyladenine, the mannitol, the monopotassium phosphate and the ethylene glycol, and uniformly mixing to obtain a second mixed solution;
and c, adding the pepper leaf extract into the second mixed solution to obtain the plant antifreezing agent.
The whole preparation process is simple and convenient to operate and safe to the environment, the prepared antifreezing agent is smooth and non-sticky, can be uniformly attached to trunks and branches, is resistant to rain and snow scouring, does not influence the light transmittance of plants, remarkably reduces the freezing damage loss of the plants, is excellent in antifreezing effect, can prevent young trees from stripping, saves the link of manually shearing autumn tips in production practice, saves labor cost, and has wide application prospects in the field of plant antifreezing agents.
Preferably, in the steps a and b, the temperature of the water is 30-40 ℃.
The invention also provides a plant antifreezing method, the plant antifreezing agent is uniformly shaken and then smeared on the trunk and the branch tips, and the thickness is 0.5-2 mm. The antifreezing agent with the thickness has excellent light transmission performance, and is beneficial to increasing the temperature of plants.
The invention also provides the application of the plant antifreezing agent as an antifreezing agent for the young pepper trees.
The antifreezing agent is used for the pepper young trees which are not cold-resistant, the overwintering survival rate of the pepper young trees is improved to a great extent, meanwhile, the germination and growth of the pepper young trees can be promoted, and the antifreezing agent plays a key role in reducing the occurrence of freezing injury of the pepper in winter and safely overwintering the pepper.
Drawings
FIG. 1 shows the growth of the current year-round grafted seedling of Zanthoxylum piperitum without cutting autumn shoots in application example 2 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The extraction process of the zanthoxylum bungeanum leaf extract in the following examples and comparative examples is as follows: picking folium Zanthoxyli in summer, placing into a pulverizer, pulverizing at 15000r/min for 10min, sieving with 80 mesh sieve, collecting juice, juicing at 15000r/min for 10min, and sieving with 200 mesh sieve to obtain liquid phase as folium Zanthoxyli Bungeani extract.
Example 1:
a plant antifreezing agent comprises the following components in parts by mass: 5 parts of polyvinyl alcohol, 5 parts of diniconazole, 5 parts of aminobenzoic acid, 2 parts of sodium carboxymethylcellulose, 4 parts of 6-benzyladenine, 1 part of mannitol, 0.8 part of monopotassium phosphate, 0.4 part of pepper leaf extract, 20 parts of ethylene glycol and 15 parts of water.
The preparation method comprises the following steps:
step a, weighing the components according to the mass part ratio of the components of the plant antifreezing agent; dissolving polyvinyl alcohol, diniconazole and aminobenzoic acid with 12 parts of water at 30 ℃ to obtain a first mixed solution;
step b, adding sodium carboxymethylcellulose into the first mixed solution, uniformly mixing, adding 3 parts of water with the temperature of 30 ℃ for dilution, and then sequentially adding 6-benzyladenine, mannitol, potassium dihydrogen phosphate and ethylene glycol, and uniformly mixing to obtain a second mixed solution;
and c, adding the pepper leaf extract into the second mixed solution to obtain the plant antifreezing agent.
Example 2:
a plant antifreezing agent comprises the following components in parts by mass: 5 parts of polyvinyl alcohol, 5 parts of diniconazole, 5 parts of aminobenzoic acid, 1.8 parts of sodium carboxymethylcellulose, 2 parts of 6-benzyladenine, 0.5 part of mannitol, 0.8 part of monopotassium phosphate, 0.2 part of pepper leaf extract, 10 parts of ethylene glycol and 12 parts of water.
The preparation method comprises the following steps:
step a, weighing the components according to the mass part ratio of the components of the plant antifreezing agent; dissolving polyvinyl alcohol, diniconazole and aminobenzoic acid with 10 parts of water at 35 ℃ to obtain a first mixed solution;
b, adding sodium carboxymethylcellulose into the first mixed solution, mixing, adding 2 parts of 35-DEG C water for dilution, and then sequentially adding 6-benzyladenine, mannitol, monopotassium phosphate and ethylene glycol, and uniformly mixing to obtain a second mixed solution;
and c, adding the pepper leaf extract into the second mixed solution to obtain the plant antifreezing agent.
Example 3:
a plant antifreezing agent comprises the following components in parts by mass: 5 parts of polyvinyl alcohol, 5 parts of diniconazole, 5 parts of aminobenzoic acid, 2 parts of sodium carboxymethylcellulose, 6 parts of 6-benzyladenine, 0.8 part of mannitol, 1.2 parts of monopotassium phosphate, 0.6 part of pepper leaf extract, 30 parts of ethylene glycol and 14 parts of water.
The preparation method comprises the following steps:
step a, weighing the components according to the mass part ratio of the components of the plant antifreezing agent; dissolving polyvinyl alcohol, diniconazole and aminobenzoic acid with 12 parts of water at 35 ℃ to obtain a first mixed solution;
b, adding sodium carboxymethylcellulose into the first mixed solution, mixing, adding 2 parts of 35-DEG C water for dilution, and then sequentially adding 6-benzyladenine, mannitol, monopotassium phosphate and ethylene glycol, and uniformly mixing to obtain a second mixed solution;
and c, adding the pepper leaf extract into the second mixed solution to obtain the plant antifreezing agent.
Example 4:
a plant antifreezing agent comprises the following components in parts by mass: 5 parts of polyvinyl alcohol, 5 parts of diniconazole, 5 parts of aminobenzoic acid, 2.1 parts of sodium carboxymethylcellulose, 3 parts of 6-benzyladenine, 0.8 part of mannitol, 0.6 part of monopotassium phosphate, 0.3 part of pepper leaf extract, 15 parts of ethylene glycol and 17 parts of water.
The preparation method comprises the following steps:
step a, weighing the components according to the mass part ratio of the components of the plant antifreezing agent, and dissolving polyvinyl alcohol, diniconazole and aminobenzoic acid with 15 parts of water at 40 ℃ to obtain a first mixed solution;
step b, adding sodium carboxymethylcellulose into the first mixed solution, uniformly mixing, adding 2 parts of water with the temperature of 40 ℃ for dilution, and then sequentially adding 6-benzyladenine, mannitol, potassium dihydrogen phosphate and ethylene glycol, and uniformly mixing to obtain a second mixed solution;
and c, adding the pepper leaf extract into the second mixed solution to obtain the plant antifreezing agent.
Example 5:
a plant antifreezing agent comprises the following components in parts by mass: 5 parts of polyvinyl alcohol, 5 parts of diniconazole, 5 parts of aminobenzoic acid, 2.2 parts of sodium carboxymethylcellulose, 5 parts of 6-benzyladenine, 0.8 part of mannitol, 1 part of monopotassium phosphate, 0.5 part of pepper leaf extract, 25 parts of ethylene glycol and 15 parts of water.
The preparation method comprises the following steps:
step a, weighing the components according to the mass part ratio of the components of the plant antifreezing agent; dissolving polyvinyl alcohol, diniconazole and aminobenzoic acid with 10 parts of water at 30 ℃ to obtain a first mixed solution;
step b, adding sodium carboxymethylcellulose into the first mixed solution, uniformly mixing, adding 5 parts of water with the temperature of 30 ℃ for dilution, and then sequentially adding 6-benzyladenine, mannitol, potassium dihydrogen phosphate and ethylene glycol, and uniformly mixing to obtain a second mixed solution;
and c, adding the pepper leaf extract into the second mixed solution to obtain the plant antifreezing agent.
Example 6:
a plant antifreezing agent comprises the following components in parts by mass: 5 parts of polyvinyl alcohol, 5 parts of diniconazole, 5 parts of aminobenzoic acid, 1.9 parts of sodium carboxymethylcellulose, 6 parts of 6-benzyladenine, 1 part of mannitol, 1.2 parts of monopotassium phosphate, 0.6 part of pepper leaf extract, 30 parts of ethylene glycol and 20 parts of water.
The preparation method comprises the following steps:
step a, weighing the components according to the mass part ratio of the components of the plant antifreezing agent, and dissolving polyvinyl alcohol, diniconazole and aminobenzoic acid with 15 parts of water at 30 ℃ to obtain a first mixed solution;
step b, adding sodium carboxymethylcellulose into the first mixed solution, uniformly mixing, adding 5 parts of water with the temperature of 30 ℃ for dilution, sequentially adding 6-benzyladenine, mannitol, potassium dihydrogen phosphate and ethylene glycol, and uniformly mixing to obtain a second mixed solution;
and c, adding the pepper leaf extract into the second mixed solution to obtain the plant antifreezing agent.
Example 7:
on the basis of example 2, the mass parts of sodium carboxymethylcellulose and potassium dihydrogen phosphate are respectively adjusted to 1 part and 0.4 part, and the use amounts of other components and the preparation method are not changed.
Example 8:
on the basis of example 3, the mass part of sodium carboxymethylcellulose is adjusted to 3 parts, the mass part of mannitol is adjusted to 1.5 parts, and the use amounts of other components and the preparation method are not changed.
Example 9:
the mass part of the sodium carboxymethylcellulose is adjusted to 1 part on the basis of the example 4, and the use amounts of other components and the preparation method are not changed.
Example 10:
on the basis of example 5, the mass part of sodium carboxymethylcellulose is adjusted to 3 parts, the mass part of mannitol is adjusted to 1.2 parts, and the use amounts of other components and the preparation method are not changed.
Example 11:
based on example 6, the mass portion of the sodium carboxymethylcellulose is adjusted to 4 portions, the mass portion of the mannitol is adjusted to 1.4 portions, and the use amounts of other components and the preparation method are not changed.
Comparative example 1:
based on the example 1, the mass part of the sodium carboxymethylcellulose is adjusted to 5 parts, the mass part of the mannitol is adjusted to 3 parts, and the use amounts of other components and the preparation method are not changed.
Comparative example 2:
sodium carboxymethylcellulose is omitted on the basis of example 1, and the amounts of other components and the preparation method are not changed.
Comparative example 3:
mannitol is omitted on the basis of example 1, and the amounts of other components and the preparation method are not changed.
Comparative example 4:
the pepper leaf extract is omitted on the basis of example 1, and the amounts of other components and the preparation method are not changed.
Comparative example 5:
potassium dihydrogen phosphate is omitted on the basis of example 1, and the amounts of other components and the preparation method are not changed.
In order to better illustrate the performance of the plant antifreeze provided by the invention, performance test and effect application are respectively carried out.
1.1 performance verification: table 1 shows the data of the main index tests of the plant antifreeze prepared in examples 1 to 11 and comparative examples 1 to 5.
TABLE 1 detection data of main indexes of plant antifreeze
The data in table 1 show that: compared with the plant antifreezing agents prepared in the examples 1 to 11, the plant antifreezing agents prepared in the comparative examples 1 to 5 have the phenomena of prolonged film forming time, reduced viscosity and poor light transmittance. Therefore, the plant antifreezing agent provided by the invention has excellent performance.
1.2 application example 1:
the material and the method are as follows: the experimental position is in the academy of forestry science of Hebei province in Hebei province, Shijiazhuang city; selecting the seedling of the cold-intolerant zanthoxylum schinifolium towards the first year or the third year as a test material. 11 groups of 3 plants were set for the test, and the test groups were coated with the antifreeze (thickness 1mm) prepared in examples 1 to 3 and 7 to 8 of the present invention; the control group is coated with the antifreezing agent (the thickness is 1mm) prepared in comparative examples 1-5 in the invention; the blank group was not coated with an anti-freeze.
Treatment time: 11/25/2019.
The minimum temperature of the pepper test in 2019 in winter is actually measured to be-18 ℃, and the average temperature in 2020 and 1 month is 1 ℃. The using condition of the antifreezing agent of annual Japanese pepper is investigated and counted in 10/4/2020, the result is shown in table 2, and the using condition of the antifreezing agent of three-year Japanese pepper is investigated and counted in 31/3/2020, and the result is shown in table 3.
TABLE 2 annual Mount Pepper antifreeze use questionnaire
TABLE 3 questionnaire for antifreezing agent for sannian zhuocang zanthoxylum piperitum
From the investigation results in table 2, the survival rate of the once-grown zanthoxylum bungeanum towards the warehouse after being treated by the antifreezing agent provided by the embodiments 1 to 3 can reach 50%, and the antifreezing agent has a significant difference compared with the embodiments 7 to 8, the comparative group and the blank group without being coated with the antifreezing agent, which indicates that the antifreezing agent prepared in the preferable content range has an excellent protection effect on the young zanthoxylum bungeanum trees; from the investigation results in table 3, the survival rate of the zanthoxylum bungeanum maxim processed for three years towards the storehouse is close to 100 percent and is far higher than that of the control group and the blank group without coating the antifreezing agent, and the antifreezing agent provided by the invention has an obvious antifreezing effect on adult zanthoxylum bungeanum trees.
1.3 application example 2:
in order to further verify that the antifreezing agent prepared by the invention has excellent antifreezing effect, a current-year grafted seedling and a biennial seedling of a cold-intolerant pepper variety Zanthoxylum bungeanum are selected as test materials in 2020, and the current-year grafted seedling adopts two management modes of autumn pruning and autumn pruning. 13 groups are set in the test, the number of each group is enlarged to 30, and the test groups are respectively coated with the antifreezing agent (the thickness is 2mm) prepared in the embodiments 1, 4-6 and 9-11 of the invention; the anti-freezing agents (the thickness is 2mm) prepared in comparative examples 1-5 of the invention are respectively coated on the comparison components; the control was coated with a commercially available antifreeze agent (thickness 2 mm).
Treatment time: year 2020, 11, 16.
In 2020, the test temperature of the pepper in the test is actually observed to reach-23 ℃ in winter and the average temperature in winter is-2 ℃ in the coldest year of Shijiazhuang in nearly ten years. The using conditions of the antifreeze of the current-year grafted seedlings of the Japanese pepper without cutting autumn tips and the biennial Japanese pepper without cutting autumn tips are investigated and counted in 25/4/2021, and the results are respectively shown in tables 4-6.
TABLE 4 survey chart for antifreeze agent used for current year grafted seedlings of Japanese pepper without cutting autumn tips
TABLE 5 survey chart for use of antifreeze for current year grafted seedling of Japanese pepper with autumn tips cut
TABLE 6 survey list for antifreeze agent for Japanese pepper in the second generation dynasty with no autumn tip cut
From the investigation results in the table, the survival rate of the current-year grafted seedlings of the litsea cubeba towards the warehouse without cutting autumn tips by the antifreezing agent provided by the embodiment of the invention can reach 73.3 percent, which is obviously higher than that of the commercial control samples; the survival rate of the seedlings of the Japanese pepper with the autumn tips cut in the current year is greatly reduced, which shows that the transportation of moisture in branches can be broken by the autumn tips cut, so that the survival rate of the Japanese pepper seedlings is not only remarkably improved by the autumn tips cut but also the labor cost can be saved by using the antifreezing agent provided by the invention; the survival rate of the biennial capsicum facing the storehouse without cutting autumn can reach 90.5 percent, and the survival rate of the commercial antifreeze is only 44.7 percent, which shows that the antifreeze provided by the invention has obvious antifreeze effect.
Meanwhile, in order to understand the influence of the antifreeze prepared in the embodiments 1, 4 to 6 of the invention on the germination and growth of the spring zanthoxylum bungeanum, the growth potential of the biennial zanthoxylum bungeanum without cutting autumn tips is investigated and observed in 25/11/2019, and the growth potential of the annual grafted seedling of the zanthoxylum bungeanum without cutting autumn tips is investigated and observed in 27/04/2021, and the results are shown in table 7.
TABLE 7 survey observations
From the investigation and observation results in the table above, the plant height, stem thickness, crown width, branch number and young shoot length of the antifreeze provided by the invention are obviously higher than those of a control group of a commercial antifreeze, and the antifreeze has the effect of promoting the germination and growth of the young pepper trees.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. The plant antifreezing agent is characterized by comprising the following components in parts by mass: 4.5-5.5 parts of polyvinyl alcohol, 4.5-5.5 parts of diniconazole, 4.5-5.5 parts of aminobenzoic acid, 0.8-4.2 parts of sodium carboxymethylcellulose, 1-6 parts of 6-benzyladenine, 0.2-1.8 parts of mannitol, 0.2-2 parts of monopotassium phosphate, 0.1-2 parts of pepper leaf extract, 5-40 parts of ethylene glycol and 11-20 parts of water.
2. The plant antifreeze agent as set forth in claim 1, which comprises the following components in parts by mass: 4.5-5.5 parts of polyvinyl alcohol, 4.5-5.5 parts of diniconazole, 4.5-5.5 parts of aminobenzoic acid, 1.8-2.2 parts of sodium carboxymethylcellulose, 1-6 parts of 6-benzyladenine, 0.2-1 part of mannitol, 0.5-2 parts of monopotassium phosphate, 0.2-1.8 parts of pepper leaf extract, 5-40 parts of ethylene glycol and 11-20 parts of water.
3. The plant antifreeze agent as set forth in claim 1, which comprises the following components in parts by mass: 4.8-5.2 parts of polyvinyl alcohol, 4.8-5.0 parts of diniconazole, 5.0-5.2 parts of aminobenzoic acid, 1.9-2.1 parts of sodium carboxymethylcellulose, 3-5 parts of 6-benzyladenine, 0.5-1 part of mannitol, 1-1.6 parts of monopotassium phosphate, 0.5-1.6 parts of pepper leaf extract, 10-30 parts of ethylene glycol and 12-18 parts of water.
4. The plant antifreeze of claim 1, wherein said zanthoxylum bungeanum leaf extract is extracted by a process comprising: squeezing folium Zanthoxyli Bungeani to obtain juice, which is folium Zanthoxyli Bungeani extract.
5. The plant antifreeze of claim 4, wherein said zanthoxylum bungeanum leaf extract extraction process further comprises: and (4) sieving the juice after juicing by a 180-230-mesh sieve.
6. The preparation method of the plant antifreezing agent is characterized by comprising the following steps:
a, weighing the components according to the mass part ratio of the plant antifreezing agent as defined in any one of claims 1 to 5; dissolving the polyvinyl alcohol, the diniconazole and the aminobenzoic acid by using 10-15 parts of water to obtain a first mixed solution;
b, adding the sodium carboxymethylcellulose into the first mixed solution, uniformly mixing, adding 1-5 parts of water for dilution, and then sequentially adding the 6-benzyladenine, the mannitol, the monopotassium phosphate and the ethylene glycol, and uniformly mixing to obtain a second mixed solution;
and c, adding the pepper leaf extract into the second mixed solution to obtain the plant antifreezing agent.
7. The method of claim 6, wherein the temperature of the water in the steps a and b is 30 to 40 ℃.
8. A plant antifreezing method, characterized in that the plant antifreezing agent as described in any one of claims 1 to 5 is applied to the trunk and the branch tips after being shaken up, and the thickness of the plant antifreezing agent is 0.5 to 2 mm.
9. Use of the plant antifreeze of any one of claims 1 to 5 as an antifreeze for young zanthoxylum bungeanum trees.
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