A synergistic adjuvant for improving the bud inhibition rate of bud inhibitors on tobacco axillary buds, its preparation method and application

Abstract

The present invention discloses a synergistic adjuvant for improving the bud inhibition rate of tobacco axillary buds by a bud inhibitor, its preparation method and application. The synergistic adjuvant is compounded by plant polyphenols, potassium fulvate and silicone defoamer according to a mass ratio of (14-16):(8-10):1, and can be used synergistically with a C12-C14 mixed fatty alcohol bud inhibitor. By enhancing the wetting selectivity of the liquid medicine to the villi of tobacco axillary buds, the bud inhibition rate is significantly improved and the risk of phytotoxicity is reduced. Field trials show that after compounding, the bud inhibition rate reaches more than 97%, the fresh weight bud inhibition effect reaches 96%, and the cost is reduced by 30%-40% compared with traditional chemical agents. The present invention has the advantages of environmental protection, safety and economy, and is applicable to the production of organic tobacco leaves.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural science and technology, and particularly relates to a synergistic adjuvant for improving the bud inhibition rate of tobacco axillary buds by a bud inhibitor, its preparation method and application. Background Art

[0002] In tobacco leaf production, timely application of a bud inhibitor after topping can break the apical dominance, prevent the growth of axillary buds, and help nutrients accumulate in the leaves, thereby improving the quality and yield of tobacco leaves.

[0003] Currently, dinitrotoluidine chemical bud inhibitors such as flumetralin, butralin, and pendimethalin are commonly used in cultivation management in tobacco leaf production areas. The research in the 4th issue of 《Chinese Tobacco Science》 in 2021 confirmed that the effective period of this type of compound can reach 21 - 28 days (DOI: 10.13496 / j.issn.1007 - 5119.2021.04.013). Improper use of chemical bud inhibitors can cause leaf phytotoxicity, affect the quality of tobacco leaves, and may also pollute the soil and water sources, endangering the ecological environment. Long - term exposure to harmful substances in these chemical agents may affect human health. The research in the core environmental science journal 《Ecotoxicology》 in 2023 confirmed that the half - life of pendimethalin in the soil reaches 60 - 90 days (PMID: 36725739).

[0004] Therefore, adopting a new type of tobacco bud inhibitor with economy, safety, and a long effective period is of great significance for increasing the income of tobacco farmers, producing high - quality tobacco leaves, and improving the yield of organic tobacco leaves. Summary of the Invention

[0005] The purpose of the present invention is to provide a synergistic adjuvant for improving the bud inhibition rate of tobacco axillary buds by a bud inhibitor, its preparation method and application, and this synergistic adjuvant can significantly enhance the inhibitory ability of the bud inhibitor on tobacco axillary buds.

[0006] To achieve the above - mentioned purpose, the present invention adopts the following technical solutions:

[0007] In the first aspect of the present invention, there is provided a synergistic adjuvant for improving the bud inhibition rate of tobacco axillary buds by a bud inhibitor. The synergistic adjuvant for improving the bud inhibition rate of tobacco axillary buds, in parts by weight, comprises the following components:

[0008] Plant polyphenols: 14 - 16 parts;

[0009] Potassium fulvate: 8 - 10 parts;

[0010] Organosilicon defoamer: 1 part.

[0011] In the above - mentioned technical solution, the plant polyphenols include green tea plant polyphenols or black tea plant polyphenols.

[0012] The specific extraction source of plant polyphenols in the embodiments of the present invention is green tea.

[0013] As a specific embodiment, the green tea plant polyphenols in the embodiments of the present invention are purchased from Xi'an Virgin Biotechnology Co., Ltd., with the product number virgin342. It is confirmed by HPLC detection that the content of epigallocatechin gallate (EGCG) is ≥82.3%, the total catechin substances are ≥90%, and the total polyphenol content is ≥96% (calculated as gallic acid equivalent).

[0014] Further, the bud inhibitor is a C12-C14 mixed fatty alcohol solvent.

[0015] Further, the mass ratio of the bud inhibitor to the synergistic adjuvant is (73-77):(23-27).

[0016] The obtained synergistic adjuvant by compounding is a milky white liquid, which is easily soluble in water, extremely stable under alkaline conditions, and decomposes when encountering acid.

[0017] In the second aspect of the present invention, a preparation method of the synergistic adjuvant for improving the bud inhibition rate of tobacco axillary buds by the bud inhibitor is provided. The method specifically includes:

[0018] Mix the silicone defoamer, potassium fulvate and plant polyphenols in sequence according to the above mass ratio, and process with a high-shear disperser. Set the rotation speed at 3000 rpm (corresponding shear rate ≥10 4 s -1 ), and continue for 15 min. The water bath jacket maintains the system temperature at 25 °C (to avoid thermal decomposition of potassium fulvate and polyphenol oxidation).

[0019] In the third aspect of the present invention, the application of the synergistic adjuvant for improving the bud inhibition rate of tobacco axillary buds by the bud inhibitor in improving the bud inhibition rate of tobacco axillary buds by the bud inhibitor is provided.

[0020] After adding the synergistic adjuvant, the retention amount of the liquid medicine on the axillary bud fluff increases by 58% (22% for the control group), and the bud inhibition rate after 15 days increases to 98%.

[0021] Further, the synergistic adjuvant realizes directional bud inhibition by enhancing the wettability of axillary bud fluff, thereby improving the bud inhibition rate of tobacco axillary buds by the bud inhibitor.

[0022] In the fourth aspect of the present invention, a method for improving the bud inhibition rate of tobacco axillary buds by the bud inhibitor is provided. The method includes:

[0023] Mix the synergistic adjuvant for improving the bud inhibition rate of tobacco axillary buds by the bud inhibitor with the bud inhibitor, and stir and dissolve to obtain an emulsion;

[0024] Dilute the emulsion and apply it to the axillary bud part of tobacco by the cup pouring method.

[0025] Furthermore, the application time is as follows: within 24 hours after topping, 20 - 30 mL of the liquid medicine is irrigated to each plant.

[0026] Furthermore, the dilution multiple is 25 - 30 times, preferably 25 times.

[0027] II. Application

[0028] After the synergistic adjuvant is prepared, 75 parts by weight of C12 - C14 mixed fatty alcohols is added.

[0029] One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0030] A synergistic adjuvant for improving the bud - inhibition rate of a bud - inhibitor on tobacco axillary buds, its preparation method and application provided by the present invention, by compounding phyto - polyphenols, potassium fulvate and silicone defoamer in proportion, and adding them to the C12 - C14 mixed fatty alcohol bud - inhibitor during use, improve the low volatility of C12 - C14 natural mixed fatty alcohols and their wettability at the axillary bud villi, extend the effective period, and thus significantly enhance the bud - inhibition effect. It has the following technical effects:

[0031] (1) Wettability improvement: The retention rate of axillary bud villi is increased by 40% - 60%;

[0032] (2) Bud - inhibition rate: It reaches 98% - 100% 15 days after application of the medicine, and remains above 95% 30 days after application;

[0033] (3) Safety: There is no leaf phytotoxicity, meeting the organic tobacco leaf production standard; it does not contain pesticide ingredients, which helps the safety of tobacco leaves and products; C12 - C14 mixed fatty alcohols are prepared from waste oils and fats. By heating and mixing the main alcohols and auxiliary alcohols respectively, the final product is made. The raw material source is sufficient, the production process is simple, the energy consumption is low, and there is no discharge of waste water, waste residue, waste gas and dust, with strong environmental protection.

[0034] (4) Economy: The application cost per mu of the C12 - C14 mixed fatty alcohol bud - inhibitor is 6 - 8 yuan, while the costs of common bud - inhibitors such as 35% flumetralin EC and 33% butralin EC are 10 - 12 yuan. The C12 - C14 mixed fatty alcohol bud - inhibitor reduces the production cost of tobacco leaves by 30% - 40% compared with traditional agents by reducing the number of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following - described drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0036] Figure 1 The physical diagram of the 25-fold dilution of the C12-C14 mixed fatty alcohol bud inhibitor with the synergistic adjuvant of Example 1 of the present invention added to the present invention;

[0037] Figure 2 For the differences in micro-nano structures on stems, axillary buds, and leaves;

[0038] Figure 3 The bud inhibition effect diagram 15 days after pesticide application; where: A: 15% plant polyphenol + 9% potassium fulvate + 1% defoamer + 75% C12-C14 mixed fatty alcohol, diluted 25 times; B: 75% C12-C14 mixed fatty alcohol, diluted 25 times; C: 15% plant polyphenol + 1% silicone defoamer + 75% C12-C14 mixed fatty alcohol, diluted 25 times; D: 9% added potassium fulvate + 1% silicone defoamer + 75% C12-C14 mixed fatty alcohol, diluted 25 times; E: 35% flumetralin emulsifiable concentrate, diluted 200 times; F: 33% butralin emulsifiable concentrate, diluted 200 times; G: Only topping without bud inhibition.

[0039] Figure 4 The bud inhibition effect diagram 30 days after pesticide application; where, H: 15% plant polyphenol + 9% potassium fulvate + 1% defoamer + 75% C12-C14 mixed fatty alcohol, diluted 25 times; I: 75% mixed fatty alcohol, diluted 25 times; J: 15% plant polyphenol + 1% silicone defoamer + 75% C12-C14 mixed fatty alcohol, diluted 25 times; K: 9% added potassium fulvate + 1% silicone defoamer + 75% C12-C14 mixed fatty alcohol, diluted 25 times; L: 35% flumetralin emulsifiable concentrate, diluted 200 times; M: 33% butralin emulsifiable concentrate, diluted 200 times; N: Only topping without bud inhibition.

[0040] Figure 5 The phytotoxicity diagrams of flumetralin and butralin. Among them, Diagram O is the phytotoxicity of flumetralin, and Diagram P is the phytotoxicity of butralin. Detailed implementation manners

[0041] The following will specifically describe the present invention in combination with the detailed implementation manners and examples, and the advantages and various effects of the present invention will be presented more clearly therefrom. Those skilled in the art should understand that these detailed implementation manners and examples are used to illustrate the present invention, rather than limiting the present invention.

[0042] Throughout the specification, unless otherwise specifically stated, the terms used herein should be understood as having the meanings commonly used in the art. Therefore, unless otherwise defined, all technical and scientific terms used herein have the same meanings as those generally understood by those skilled in the art to which the present invention belongs. In case of contradiction, this specification shall prevail.

[0043] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "first", "second", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0044] In addition, in the description of the present application, the meanings of "a plurality of" and "several" are two or more, unless otherwise clearly and specifically defined.

[0045] The plant polyphenols in the embodiments of the present invention were purchased from Xi'an Virgin Biotechnology Co., Ltd., with the product number virgin342;

[0046] Potassium humate was purchased from Jinan Shengshi Chuangfu Chemical Co., Ltd., with the product number 158;

[0047] The silicone defoamer was purchased from Guangdong Nanhui New Materials Co., Ltd., with the product number Cl-0560;

[0048] The bud inhibitor C12-C14 mixed fatty alcohols were purchased from Shanghai Macklin Biochemical Co., Ltd., with the product number A913429.

[0049] The general idea of the technical solution of the present application is as follows:

[0050] According to a typical embodiment of the present invention, there is provided a synergistic adjuvant for improving the bud inhibition rate of a bud inhibitor on tobacco axillary buds. The synergistic adjuvant for improving the bud inhibition rate of a bud inhibitor on tobacco axillary buds, in parts by weight, comprises the following components:

[0051] Plant polyphenols: 14-16 parts;

[0052] Potassium humate: 8-10 parts;

[0053] Silicone defoamer: 1 part.

[0054] The principle of the present invention is as follows:

[0055] C12-C14 mixed fatty alcohols are a kind of biogenic mixed fatty alcohols composed of 8 to 10 carbon atoms, having the advantages of non-toxicity, no residue, and fast quick-acting property. The C12-C14 natural mixed fatty alcohol tobacco bud inhibitor has the characteristics of no pollution, no residue and no change in the chemical composition of tobacco, but when applied alone, the drug effect time is short, seriously affecting the quality and quality of tobacco.

[0056] The inventors of the present application found that:

[0057] Plant polyphenols, potassium fulvate, and silicone defoamer are used as auxiliaries. When used in combination with mixed fatty alcohols, the synergistic effect of the bud inhibitor can be significantly enhanced: (1) Plant polyphenols and potassium fulvate not only stabilize and enhance the activity of the bud inhibitor, reduce degradation losses, but also extend the drug efficacy, enhance the plant's stress resistance and physiological activity, and improve the quality of tobacco leaves; (2) Plant polyphenols form stable chelates with potassium ions, attach to the leaves, and increase the retention amount of the liquid medicine; (3) Silicone defoamer is used to eliminate the bubbles in the liquid medicine.

[0058] Among the main stem, axillary buds, and petioles of the tobacco plant, the number of villi on the axillary buds is significantly more than that of the other two parts.

[0059] By adding auxiliaries, the wettability of the liquid medicine can be enhanced, enabling the liquid medicine to be more effectively retained in the axillary bud part with more villi, thereby significantly improving the inhibitory effect of the bud inhibitor. This method can more precisely target the axillary buds for treatment and improve the bud inhibition effect.

[0060] (1) Average diameter of villi, axillary buds: about 10 mm to 15 mm; leaves: about 15 mm to 20 mm; stem: about 20 mm to 30 mm. (2) Density of villi, axillary buds: about 200 to 800 villi per square millimeter; leaves: about 100 to 500 villi per square millimeter; stem: about 50 to 300 villi per square millimeter.

[0061] The synergistic auxiliary agent for improving the bud inhibition rate of tobacco axillary buds, its preparation method and application according to the present application will be described in detail below with reference to the accompanying drawings.

[0062] Example 1 A synergistic auxiliary agent for improving the bud inhibition rate of tobacco axillary buds

[0063] I. A synergistic auxiliary agent for improving the bud inhibition rate of tobacco axillary buds, calculated by weight, includes the following components:

[0064] Plant polyphenols: 15 parts by weight;

[0065] Potassium fulvate: 9 parts by weight;

[0066] Silicone defoamer: 1 part by weight.

[0067] II. Application

[0068] After the synergistic auxiliary agent is prepared, 75 parts by weight of C12-C14 mixed fatty alcohol is added to obtain an emulsion concentrate; the emulsion concentrate is diluted 25 times and applied to the tobacco axillary bud part by the cup pouring method.

[0069] Example 2

[0070] I. A synergistic auxiliary agent for improving the bud inhibition rate of tobacco axillary buds, calculated by weight, includes the following components:

[0071] Plant polyphenols: 14 parts by weight;

[0072] Potassium fulvate: 10 parts by weight;

[0073] Organosilicon defoamer: 1 part by weight.

[0074] II. Application

[0075] After the synergistic adjuvant is prepared, 75 parts by weight of C12-C14 mixed fatty alcohols are added to obtain an emulsion in water; the emulsion in water is diluted 25 times and applied to the axillary buds of tobacco by the cup pouring method.

[0076] Example 3

[0077] I. A synergistic adjuvant for improving the axillary bud inhibition rate of tobacco by a bud inhibitor, comprising the following components in parts by weight:

[0078] Plant polyphenols: 16 parts by weight;

[0079] Potassium fulvate: 8 parts by weight;

[0080] Organosilicon defoamer: 1 part by weight.

[0081] II. Application

[0082] After the synergistic adjuvant is prepared, 75 parts by weight of C12-C14 mixed fatty alcohols are added to obtain an emulsion in water; the emulsion in water is diluted 25 times and applied to the axillary buds of tobacco by the cup pouring method.

[0083] Comparative Example 1

[0084] In this comparative example, it is 75 (w / w)% content of C12-C14 mixed fatty alcohols, and the balance is deionized water, diluted 25 times. That is, without using the synergistic adjuvant for improving the axillary bud inhibition rate of tobacco in Example 1, directly using the bud inhibitor C12-C14 mixed fatty alcohols.

[0085] Comparative Example 2

[0086] In this comparative example, except for not adding potassium fulvate, other steps are the same as in Example 1.

[0087] Comparative Example 3

[0088] In this comparative example, except for not adding plant polyphenols, other steps are the same as in Example 1.

[0089] Comparative Example 4

[0090] This comparative example is the control agent 1: 35% flumetralin emulsifiable concentrate, diluted 200 times.

[0091] Comparative Example 5

[0092] This comparative example is the control agent 2: 33% butralin emulsifiable concentrate, diluted 200 times.

[0093] Comparative Example 6

[0094] This comparative example is a blank control group: only topping without bud inhibition.

[0095] Experimental Example 1

[0096] I. Experimental Method

[0097] 1. Experimental Design

[0098] Test crop: flue-cured tobacco variety, Yunyan 87.

[0099] Test time and location: from June 12th to July 12th, 2024, at the base of the Tobacco Research Institute of the Chinese Academy of Agricultural Sciences in Jimo District, Qingdao City, Shandong Province. The test field is loam with medium soil fertility.

[0100] Set groups: including the above-mentioned Examples 1 - 3, and Comparative Examples 1 - 6;

[0101] Each treatment has 4 replicates, with 30 tobacco plants in each replicate, totaling 36 plots. The plots are randomly arranged.

[0102] During the elongation stage of tobacco flower buds to the initial flowering stage, artificial topping is carried out and axillary buds with a length of 2 cm or more are removed. After diluting the medicament by a certain multiple, it is applied by the cup pouring method, with 20 - 30 mL of the medicament solution poured on each plant, allowing it to flow down the main stem to ensure that the medicament solution covers each axillary bud site. Axillary buds not covered need to be supplemented and coated in a timely manner.

[0103] When using the bud inhibitor, attention should be paid to: applying the medicine within 24 hours after tobacco topping, and the immediate application has the best effect; avoid using it when the plant is too wet, the temperature is too high, or the wind speed is too large, so as not to affect the effect.

[0104] Meteorological conditions: average temperature is about 24 °C to 28 °C; average humidity is about 75% to 85%; average rainfall is about 80 mm to 100 mm.

[0105] Soil parameters: sand content is 40% to 60%; silt content is 30% to 50%; clay content is 10% to 20%; soil pH value is 6.0 to 7.5 (neutral to slightly acidic).

[0106] 2. Bud inhibition investigation method:

[0107] 15 days and 30 days after applying the medicine, 3 points are selected in each treatment plot, and 10 plants are investigated at each point. Axillary buds with a length greater than 2 cm on each tobacco plant are counted, and the fresh weight of axillary buds is finally counted.

[0108] After the test ends, calculate the bud inhibition rate and bud inhibition effect according to the following formula:

[0109] Bud inhibition rate (%) = (number of control buds - number of treated buds) / number of control buds × 100% (1)

[0110] Bud inhibition effect (%) = (fresh weight of control buds - fresh weight of treated buds) / fresh weight of control buds × 100% (2)

[0111] 3. Safety investigation method:

[0112] Visually investigate the growth of tobacco in each plot three times at 1, 3, and 7 days after spraying to check if it is normal. Specifically, observe for any phytotoxicity symptoms such as necrotic spots, chlorosis, malformation, dead seedlings, and stunting on the tobacco.

[0113] III. Experimental results

[0114] 1. Results at 1 - 7 days after spraying

[0115] At 1 and 2 days after spraying, there was no phytotoxicity in Examples (1 - 9);

[0116] At the 7th day after spraying, there was still no phytotoxicity in Example 1, Example 2, Example 3, Comparative Example 1, Comparative Example 2, Comparative Example 3, and Comparative Example 6. However, mild phytotoxicity occurred in Comparative Example 4 (35% flumetralin EC) and Comparative Example 5 (33% butralin EC). This may be because flumetralin and butralin are systemic bud inhibitors and did not enter the leaves at the initial stage of spraying. As time passed, their content in the leaves increased, thus causing phytotoxicity to the leaves.

[0117] 2. Results after 15 days of spraying

[0118] Table 1: Results of field bud inhibition test after 15 days

[0119] Agent Average number of axillary buds (pcs) Average bud inhibition rate (%) Example 1 0.00 100.00 Example 2 0.00 100.00 Example 3 0.00 100.00 Comparative Example 1 2.00 62.26 Comparative Example 2 1.35 74.53 Comparative Example 3 1.23 76.79 Comparative Example 4 1.80 66.03 Comparative Example 5 2.20 58.49 Comparative Example 6 5.30 --

[0120] As can be seen from Table 1:

[0121] In Examples 1 - 3, the bud inhibition rate was 100% after 15 days;

[0122] In Comparative Example 1, without adding the synergistic adjuvant of the present invention, the bud inhibition rate was 62.26% after 15 days;

[0123] In Comparative Example 2, without adding potassium fulvate, the bud inhibition rate was 74.536% after 15 days;

[0124] In Comparative Example 3, without adding plant polyphenols, the bud inhibition rate was 76.79% after 15 days;

[0125] In Comparative Examples 4 - 5, which are control agents in the prior art, the bud inhibition rate was 58.49% - 66.03% after 15 days.

[0126] From the comparison of Comparative Example 2 - Comparative Example 3 with Example 1, it can be seen that the addition of both plant polyphenols and potassium fulvate has a synergistic effect, and the compounding with C12 - C14 fatty alcohols can significantly improve the effect of the bud inhibitor.

[0127] 3. Results after 30 days of applying the drug

[0128] Table 2: Results of the field bud inhibition test after 30 days

[0129] Agent Average number of axillary buds (pcs) Average fresh weight of axillary buds (g) Average bud inhibition rate (%) Bud inhibition effect (%) Example 1 0.10 2.10 98.33 97.01 Example 2 0.12 2.50 98.01 96.96 Example 3 0.20 3.00 97.89 96.85 Comparative Example 1 3.40 40.12 43.00 42.87 Comparative Example 2 1.86 20.36 69.00 71.01 Comparative Example 3 1.96 26.32 67.33 62.52 Comparative Example 4 2.36 30.20 60.67 57.00 Comparative Example 5 2.86 38.00 52.33 46.00 Comparative Example 6 6.00 70.23 -- --

[0130] The test results in the above table show that:

[0131] In Examples 1 - 3, the bud inhibition effect reached 96.85 - 97.01% after 30 days.

[0132] In Comparative Example 1, without adding the synergistic adjuvant of the present invention, the bud inhibition effect was only 42.87% after 30 days.

[0133] In Examples 1, 2 and 3, the C12 - C14 bud inhibition effect with the added synergistic adjuvant was significantly better than that of Comparative Example 1 (using C12 - C14 fatty alcohols alone), Comparative Example 2 (without adding potassium fulvate), Comparative Example 3 (without adding plant polyphenols), Comparative Example 4 (35% flumetralin EC), Comparative Example 5 (33% butralin EC) and Comparative Example 6 (only topping without bud inhibition);

[0134] Moreover, in Examples 1, 2 and 3, both plant polyphenols and potassium fulvate were added, and the bud inhibition effect was better.

[0135] In summary, it can be seen that the present invention has an obvious effect on tobacco bud inhibition, with an average bud inhibition rate above 97%, and the average fresh weight bud inhibition effect can reach above 96%. Through the comparison of the bud inhibition effect, the tobacco bud inhibitor composition of the present invention has a better bud inhibition effect than the currently widely used 35% flumetralin EC and 33% butralin EC.

[0136] Considering the bud inhibition effect and dosage cost comprehensively, the C12 - C14 bud inhibitor with the added synergistic adjuvant is more suitable for promotion.

[0137] Finally, it should also be noted that the term "including", "comprising" or any other variant thereof is intended to cover non - exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0138] Although the preferred embodiments of the present invention have been described, additional changes and modifications can be made to these embodiments by those skilled in the art once they learn the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art can make various changes and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. Use of a synergistic adjuvant in increasing the bud inhibition rate of a bud inhibitor on tobacco axillary buds, characterized in that, The synergistic adjuvant, by weight parts, consists of the following components: Green tea polyphenols: 14 - 16 parts; the green tea polyphenols contain: epigallocatechin gallate ≥ 82.3%, total catechins ≥ 90%, and total polyphenol content calculated as gallic acid equivalent ≥ 96%; Potassium fulvate: 8 - 10 parts; Organosilicon defoamer: 1 part; Among them, the bud inhibitor is a C12 - C14 mixed fatty alcohol solvent, and the mass ratio of the bud inhibitor to the synergistic adjuvant is 73 - 77:23 - 27.

2. The application according to claim 1, wherein The synergistic adjuvant realizes directional bud inhibition by enhancing the wettability of axillary bud villi, thereby improving the bud inhibition rate of the bud inhibitor on tobacco axillary buds.

3. A method for improving the bud inhibition rate of a bud inhibitor on tobacco axillary buds, characterized in that, The method includes: Mixing the synergistic adjuvant in the application described in claim 1 with the bud inhibitor, and obtaining an emulsion in water after stirring and dissolving; Applying the emulsion in water to the axillary bud parts of tobacco by the cup pouring method after dilution.

4. The method for improving the bud inhibition rate of a bud inhibitor on tobacco axillary buds according to claim 3, wherein The application time is: within 24 hours after topping, and 20 - 30 mL of the liquid medicine is irrigated per plant.

5. A method for improving the bud inhibition rate of a bud inhibitor on tobacco axillary buds according to claim 3, characterized in that The dilution multiple is 25 - 30 times.

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