CN111226925A

CN111226925A - Pesticide adjuvant and application thereof

Info

Publication number: CN111226925A
Application number: CN202010217868.2A
Authority: CN
Inventors: 秦龙; 周曙光; 黄海燕; 马恒博; 沈兰兰; 钱志刚; 徐亚卿; 董飞; 陆建明
Original assignee: Zhejiang Xinan Chemical Industrial Group Co Ltd
Current assignee: Zhejiang Xinan Chemical Industrial Group Co Ltd
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2020-06-05
Also published as: WO2021189987A1

Abstract

The invention relates to a pesticide adjuvant and an application thereof, wherein the pesticide adjuvant comprises the following components: plant polyphenol or plant polyphenol polymer, plant essential oil and solvent. The polyphenol substances in the composition provided by the invention contain a large amount of hydrophilic phenolic hydroxyl groups, can be strongly combined with water to prevent water from volatilizing, and can damage insect epidermal cells, and the unique micromolecule permeability of the plant essential oil can accelerate the penetration of damaged epidermis, so that the composition is matched with plant polyphenol or plant polyphenol polymer for use, the pesticide receiving time of target insects is prolonged, the pertinence and the absorption utilization rate of the pesticide are greatly improved, and the control effect is improved. In addition, the plant polyphenol can be combined with excessive calcium and magnesium ions in water, so that the pesticide auxiliary agent has good compatibility with hard water and strong stability after being mixed with a pesticide preparation.

Description

Pesticide adjuvant and application thereof

Technical Field

The invention relates to the technical field of agriculture, in particular to a pesticide auxiliary agent and application thereof.

Background

Agricultural sustainable development is the mainstream of agricultural development in the world at present, pesticide reduction and synergism become common knowledge of people, and the use of agricultural auxiliary agents has obvious advantages in the aspects of operation efficiency, safety, environmental protection and the like.

The pesticide spraying auxiliary agents are various in types, and can be divided into inorganic salt, organic silicon, high molecular polymer, mineral oil, vegetable oil and the like according to chemical categories, and can be divided into wetting agents, penetrating agents, spreading agents, deposition agents, anti-drift agents, anti-volatile agents and synergists according to the functions of the auxiliary agents.

CN107467015A discloses a novel pesticide adjuvant which is composed of the following components in parts by weight: 5-15 parts of vegetable oil, 20-40 parts of dry ice, 30-50 parts of light mineral oil, 1-5 parts of calcium dodecyl benzene sulfonate, 2-6 parts of sodium dodecyl sulfate and 4-6 parts of an antifreezing agent; wherein the antifreezing agent is a mixture of ethylene glycol and propylene glycol, and the mass ratio of the ethylene glycol to the propylene glycol is 1.7-2.1: 1. The components in the formula of the novel pesticide adjuvant are harmless to the environment and human body, the smog effect can be generated by directly adding pesticide liquid, harmful adjuvants such as benzene, dimethylbenzene, aniline and cyclohexanone do not need to be added in the production process, the novel pesticide adjuvant meets the requirements of environmental protection, low residue, easy degradation and no public nuisance, and is particularly suitable for preventing and treating plant diseases and insect pests of vegetables and fruit trees. However, the pesticide composition has poor compatibility with pesticides in hard water conditions, and cannot be stored for a long time after being mixed, thereby causing waste and inconvenience in use.

CN104026124A discloses a pesticide adjuvant and an application thereof, wherein the pesticide adjuvant comprises the following components in parts by mass: 5-15 parts of stabilizer, 15-40 parts of settling agent and 20-60 parts of smoke agent. The pesticide adjuvant provided by the invention can adjust the proportion of each component according to the quality of the prepared liquid medicine during application, and plays a role in generating smoke and controlling the height of the smoke during spraying. When the pesticide adjuvant is applied, the width of smoke can reach 20-30m by one-time spraying, and the application time of the pesticide is greatly saved; the smoke effect is kept for more than 10min, the pest control efficiency is improved, and the effect of quickly, efficiently and long-term pest control can be achieved. However, the pesticide adjuvant is easy to volatilize and fly in the spraying process, and the pesticide effect is not obviously improved.

CN104430321A discloses an environment-friendly pesticide adjuvant which comprises the following components in parts by weight: 10-15 parts of talcum powder, 5-8 parts of sodium dodecyl benzene sulfonate, 5-10 parts of alkylphenol polyoxyethylene, 3-6 parts of dispersing agent, 2-5 parts of wetting agent, 4-5 parts of spreader, 2-3 parts of nano zinc oxide and 1-3 parts of nano titanium oxide. The environment-friendly pesticide auxiliary agent provided by the invention has good biodegradability, long pesticide effect and no release of toxic substances, and is beneficial to environmental protection. The pesticide adjuvant has no anti-drift performance, when the pesticide adjuvant is used as a spraying adjuvant, drift causes waste, and the effect of hard water resistance is not ideal.

Therefore, the invention needs to develop a pesticide adjuvant with abundant functions, safety and environmental protection.

Disclosure of Invention

One of the purposes of the invention is to provide a pesticide adjuvant which has good wetting permeability, can meet the requirements of pesticide synergism, anti-drift and hard water resistance, has the effects of deposition assistance, volatilization resistance and stability improvement, can reduce the dosage and improve the pesticide effect, and is green, safe and environment-friendly.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a pesticide adjuvant which comprises the following components: plant polyphenol or plant polyphenol polymer, plant essential oil and solvent.

The plant polyphenol is a secondary metabolite which is rich in resources, safe and environment-friendly and is derived from natural plants, has low toxicity, can be biologically degraded and returns to the nature. Plant polyphenol contains rich phenolic hydroxyl groups, has unique physiological activity and chemical characteristics, has astringency, can degrade the living environment of crop pests, inhibit the propagation of the pests, has the functions of inhibiting the activity of a lipolytic enzyme and a multifunctional oxidase, thereby enhancing the stress resistance of plants, has the capability of complexing metal ions, can resist hard water and passivate heavy metals in polluted soil, simultaneously has various active functions of moisture retention, bacteriostasis, virus resistance and the like, changes the proportion of hydrophilic groups and lipophilic groups in a molecular structure, and can retain the biological activity and have good surface activity.

The plant essential oil is a concentrated liquid extracted from natural plants, can promote the absorption of the plants on pesticides, improves the control effect, and is safe and nontoxic.

The polyphenol substances in the composition provided by the invention contain a large amount of hydrophilic phenolic hydroxyl groups, can be strongly combined with water to prevent water from volatilizing, can form molecular complexes with chitin, lipids, proteins and the like in insect epidermis to destroy insect epidermal cells when contacting insects, and the unique micromolecule permeability of plant essential oil can accelerate the permeation of damaged epidermis and is matched with plant polyphenol or plant polyphenol polymers for use, so that the pesticide receiving time of target insects is prolonged, the pertinence and the absorption utilization rate of pesticides are greatly improved, and the control effect is improved.

In addition, the plant polyphenol can be combined with excessive calcium and magnesium ions in water, so that the pesticide auxiliary agent has good compatibility with hard water and strong stability after being mixed with a pesticide preparation.

The main active ingredients of the plant essential oil, the plant polyphenol or the plant polyphenol polymer in the invention can be biodegraded, so the plant essential oil, the plant polyphenol or the plant polyphenol polymer is green and pollution-free to the ecological environment, does not easily generate phytotoxicity to crops, and is safe and efficient in production and use.

Preferably, the plant polyphenol comprises any one or at least two combinations of simple phenolic compounds, benzoquinone compounds, hydroxybenzoic acid compounds, acetophenone compounds, phenylacetic acid compounds, hydroxycinnamic acid compounds, phenylpropene compounds, coumarin compounds, chromone compounds, naphthoquinone compounds, xanthone compounds, anthraquinone compounds, flavonoid compounds or urushiol compounds, preferably urushiol compounds.

Preferably, the urushiol compound comprises any one or at least two of urushiol, lac phenol, tin zeal, cardanol, ginkgol, neourushiol, cardol or ginkgol.

Preferably, the flavonoid compound extraction raw material comprises any one or at least two of tea, cinnamon, ginkgo or pine.

Preferably, the plant polyphenol polymer comprises any one or at least two of lignin, condensed tannin, plant polyphenol alcohol ether polycarboxylate or plant polyphenol polyoxyethylene ether, preferably plant polyphenol polyoxyethylene ether.

The preferable plant polyphenol polymer comprises plant polyphenol polyoxyethylene ether, and the ethyoxyl in the polyether compound has the hard water resistance, so that the selection of water sources in field medication is facilitated.

Preferably, the condensed tannin is extracted from any one or a combination of at least two of persimmon, casuarina equisetifolia, mangrove forest, Kandelia candel, horse chestnut, multiflora rose, cherokee rose, aucklandia japonica, negundo chastetree, acacia taiwan, acacia, vetch, datura or acacia.

Preferably, the plant polyphenol polyoxyethylene ether comprises cardanol polyoxyethylene ether and/or anacardic phenol polyoxyethylene ether.

Preferably, the pesticide adjuvant comprises the following components: plant polyphenol polymer, plant essential oil and solvent.

Preferably, the plant essential oil comprises any one or at least two of citrus essential oil, oriental essential oil, flower fragrance essential oil, vanilla essential oil, resin essential oil, spice essential oil or wood essential oil, preferably citrus essential oil and/or flower fragrance essential oil.

Preferably, the citrus essential oil comprises any one or at least two of bergamot essential oil, grapefruit essential oil, lemon grass essential oil, lime essential oil, tangerine essential oil or sweet orange essential oil.

Preferably, the floral plant essential oil comprises any one or at least two of chamomile essential oil, geranium essential oil, jasmine essential oil, rose essential oil, ylang-ylang essential oil, lavender essential oil or orange flower essential oil.

Preferably, the solvent comprises any one or at least two of water, propylene glycol ether, ethanol, isopropanol, n-propanol, n-butanol, isobutanol, soybean oil methyl ester, rapeseed oil methyl ester, cottonseed oil methyl ester, sunflower oil methyl ester, turpentine methyl ester, 150# solvent oil or 200# solvent oil.

Preferably, the pesticide adjuvant further comprises a surfactant.

Preferably, the surfactant comprises any one or a combination of at least two of an anionic surfactant, a cationic surfactant, an amphoteric surfactant or a nonionic surfactant.

Preferably, the pesticide auxiliary agent comprises the following components in percentage by mass:

the content of the plant polyphenol or plant polyphenol polymer is 10-80%, such as 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, etc.

The content of the plant essential oil is 8-78%, such as 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, etc.

The surfactant is present in an amount of 10-50%, e.g., 12%, 14%, 16%, 18%, 20%, 22%, 24%, 26%, 28%, 30%, 32%, 34%, 36%, 38%, 40%, 42%, 44%, 46%, 48%, etc.

Preferably, the pesticide adjuvant further comprises any one or at least two of high molecular polymer, vegetable oil, mineral oil or amino acid.

The high molecular weight polymer is a high molecular weight compound formed by repeated connection of bonds, can be divided into natural high molecules, semisynthetic high molecules and synthetic high molecules from the source, has the functions of viscosity increasing, thickening, dispersing and capacity increasing compared with common small molecules, can increase the deposition and adhesive force of liquid drops, improves the anti-drifting capacity, and is suitable for being used as a spray auxiliary agent.

Preferably, the high molecular polymer includes any one or a combination of at least two of natural high molecules, modified natural high molecules, or synthetic high molecules.

Preferably, the natural polymer comprises any one or at least two of cellulose, chitosan, starch, humic acid, water-soluble protein or guar gum.

Preferably, the synthetic polymer comprises any one or at least two of polyacrylamide, polyacrylic acid, sulfate polymer, sulfuric acid polymer, polyvinyl alcohol and partially esterified or acetal thereof, preferably any one or at least two of guar gum, polyacrylamide or polyacrylic acid.

The preparation method of the pesticide adjuvant provided by the invention is that the components are weighed and then uniformly mixed according to a certain proportion.

The pesticide adjuvant provided by the invention is applied as a spraying adjuvant, so that the pesticide utilization rate can be improved, and the control effect can be improved.

The application method comprises the steps of premixing the pesticide with water in a container, adding the pesticide auxiliary agent, uniformly stirring, and then adding into a sprayer for spraying.

The other object of the present invention is to provide a pesticide containing the auxiliary for agricultural chemicals of the first object.

Preferably, the pesticide adjuvant has a mass content of 30-90%, for example, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, and the like.

Compared with the prior art, the invention has the following beneficial effects:

the polyphenol substances in the composition provided by the invention contain a large amount of hydrophilic phenolic hydroxyl groups, can be strongly combined with water to prevent water from volatilizing, can form molecular complexes with chitin, lipids, proteins and the like in insect epidermis to destroy insect epidermal cells when contacting insects, and the unique micromolecule permeability of plant essential oil can accelerate the permeation of damaged epidermis and is matched with plant polyphenol or plant polyphenol polymers for use, so that the pesticide receiving time of target insects is prolonged, the pertinence and the absorption utilization rate of pesticides are greatly improved, the control effect is improved, and the composition is non-toxic and environment-friendly.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.

The following examples and comparative examples used the following sources of raw materials:

cardanol polyoxyethylene ether: purchased from Shanghai Banghou Kagaku Co., Ltd, and the product number is cardanol polyoxyethylene ether;

orange peel essential oil: purchased from Shanghai Jiuzhong industry Co., Ltd, and the commercial number is D-limonene;

guar gum: purchased from Jiangsu Caoswei Biotechnology GmbH, and the product number is guar gum;

fatty alcohol polyoxyethylene ether: purchased from the company Limited of science and technology group of praise, and the product number is fatty alcohol polyoxyethylene ether (AEO);

dodecyl benzene sulfonic acid: purchased from the Soervi group and having a product number of

70；

Tea polyphenol: purchased from Shenzhen Hensheng Biotech Limited, and the commodity number is tea polyphenol;

polyacrylamide: purchased from Linglong Water treatment materials Co., Ltd, and the product number is polyacrylamide;

calcium dodecylbenzenesulfonate: purchased from Jiangsu Kaiyuan technology Co., Ltd, and the commercial product number is Nongru 500 #;

persimmon polyphenol: purchased from Nanjing Jingzhu Biotech Co., Ltd, and the commercial product number is persimmon polyphenol;

geranium essential oil: purchased from Shanghai Huien International trade company Limited, and the product number is rose geranium single essential oil;

urushiol polyoxyethylene ether: purchased from a group of handed-down companies, and the commercial product number is plant polyene phenol polyether;

cinnamon polyphenol: is purchased from Xian Xu Total biotechnology Limited company, and the commercial product number is cinnamon polyphenol;

lignin polyether: purchased from Changzhou mountain peak chemical Co., Ltd, and the product number is lignin polyether polyol.

Example 1

The embodiment provides a pesticide adjuvant which comprises the following formula:

30% of cardanol polyoxyethylene ether, 25% of orange peel essential oil, 10% of guar gum, 14.6% of fatty alcohol polyoxyethylene ether, 11% of calcium dodecyl benzene sulfonate and water for supplementing 100%.

Example 2

35% of cardanol polyoxyethylene ether, 25% of orange peel essential oil, 10% of guar gum, 8.4% of fatty alcohol polyoxyethylene ether, 14% of calcium dodecyl benzene sulfonate and water for supplementing 100%.

Example 3

41% of cardanol polyoxyethylene ether, 25% of orange peel essential oil, 10% of guar gum, 5% of fatty alcohol polyoxyethylene ether, 13% of calcium dodecyl benzene sulfonate and water for supplementing 100%.

Example 4

30% of cardanol polyoxyethylene ether, 5% of tea polyphenol, 15% of orange peel essential oil, 2% of polyacrylamide, 15% of fatty alcohol polyoxyethylene ether, 21% of calcium dodecyl benzene sulfonate and water, wherein the balance is 100%.

Example 5

30% of cardanol polyoxyethylene ether, 5% of tea polyphenol, 25% of orange peel essential oil, 5% of polyacrylamide, 5% of fatty alcohol polyoxyethylene ether, 24% of calcium dodecyl benzene sulfonate and water for supplementing 100%.

Example 6

30% of cardanol polyoxyethylene ether, 5% of tea polyphenol, 35% of orange peel essential oil, 0.5% of polyacrylamide, 9% of fatty alcohol polyoxyethylene ether, 12.5% of calcium dodecyl benzene sulfonate and water for supplementing 100%.

Example 7

30% of cardanol polyoxyethylene ether, 5% of persimmon polyphenol, 25% of geranium essential oil, 12% of guar gum, 18% of fatty alcohol polyoxyethylene ether and water, wherein the total amount is 100%.

Example 8

30% of cardanol polyoxyethylene ether, 5% of persimmon polyphenol, 30% of geranium essential oil, 6% of guar gum, 19% of fatty alcohol polyoxyethylene ether and water, wherein the total amount is 100%.

Example 9

30% of cardanol polyoxyethylene ether, 4% of persimmon polyphenol, 35% of geranium essential oil, 6% of guar gum, 17% of fatty alcohol polyoxyethylene ether and water, wherein the total amount is 100%.

Example 10

30% of urushiol polyoxyethylene ether, 5% of cinnamon polyphenol, 34% of geranium essential oil, 12% of guar gum, 12% of calcium dodecyl benzene sulfonate and water, wherein the total amount is 100%.

Example 11

35% of urushiol polyoxyethylene ether, 10% of cinnamon polyphenol, 22% of geranium essential oil, 13% of guar gum, 13% of calcium dodecyl benzene sulfonate and water, wherein the balance is 100%.

Example 12

41% of urushiol polyoxyethylene ether, 2.5% of cinnamon polyphenol, 24% of geranium essential oil, 13.5% of guar gum, 15% of calcium dodecyl benzene sulfonate and water to make up to 100%.

Example 13

30% of urushiol polyoxyethylene ether, 5% of persimmon polyphenol, 22% of geranium essential oil, 10% of guar gum, 18% of calcium dodecyl benzene sulfonate and water, wherein the balance is 100%.

Example 14

35% of urushiol polyoxyethylene ether, 10% of persimmon polyphenol, 8% of geranium essential oil, 10% of guar gum, 22% of calcium dodecyl benzene sulfonate and water to make up to 100%.

Example 15

41% of urushiol polyoxyethylene ether, 2.5% of persimmon polyphenol, 20% of geranium essential oil, 10% of guar gum, 13.5% of calcium dodecyl benzene sulfonate and water for making up 100%.

Example 16

21% of lignin polyether, 11% of tea polyphenol, 47% of orange peel essential oil, 12% of guar gum and water, wherein the total amount is 100%.

Example 17

21% of cardanol sulfonate, 6% of tea polyphenol, 47% of orange peel essential oil, 12% of guar gum and water, wherein the water is used for supplementing 100%.

Example 18

The difference from example 6 is that cardanol polyoxyethylene ether is not added.

Example 19

10% of cardanol polyoxyethylene ether, 78% of orange peel essential oil, 10% of fatty alcohol polyoxyethylene ether and water for complementing 100%.

Example 20

30% of cardanol polyoxyethylene ether, 50% of tea polyphenol, 8% of orange peel essential oil, 10% of fatty alcohol polyoxyethylene ether and water for complementing 100%.

Example 21

10% of urushiol polyoxyethylene ether, 10% of cinnamon polyphenol, 8% of geranium essential oil, 50% of calcium dodecyl benzene sulfonate, 2% of vegetable oil, 5% of mineral oil, 8% of amino acid and water, wherein the balance is 100%.

Comparative example 1

The difference from example 1 is that cardanol polyoxyethylene ether is not added.

Comparative example 2

The difference from example 1 is that no orange peel essential oil is added.

Comparative example 3

The difference from example 6 is that cardanol polyoxyethylene ether, tea polyphenol and orange peel essential oil are not added.

Comparative example 4

The difference from example 7 is that no geranium essential oil is added.

The preparation method of the pesticide adjuvant in the above examples and comparative examples is as follows:

respectively weighing plant polyphenol or plant polyphenol polymers (urushiol polyoxyethylene ether, cardanol polyoxyethylene ether, lignin polyether, tea polyphenol, persimmon polyphenol and cinnamon polyphenol) according to a proportion in a reaction kettle, uniformly stirring, adding plant essential oil (orange peel essential oil and geranium essential oil), then weighing high molecular polymers (guar gum and polyacrylamide), uniformly stirring, finally weighing surfactant (calcium dodecyl benzene sulfonate, fatty alcohol polyoxyethylene) and water, and stirring to obtain a homogeneous transparent mixed solution.

Performance testing

(1) The compositions in the examples and the comparative examples are mixed with agricultural chemical products for use, diluted 250 times by water, 1g of mixed solution is uniformly dripped on filter paper, the balance reading is recorded as initial weight, the mixture is placed in a constant temperature and humidity box with the temperature of 25 ℃ and the humidity of 50 percent, the mixture is taken out after 10min and weighed, and the volatilization rate is loss weight/initial weight (1 g). The volatilization rates are shown in Table 1.

TABLE 1

As shown in table 1, the composition in the examples is mixed with the pesticide preparation product for use, and the volatilization rate of the liquid medicine can be effectively reduced compared with the case of not adding the composition, which shows that the composition of the invention can effectively improve the volatilization resistance of the liquid medicine.

(2) After the pesticide adjuvant in the examples and comparative examples was mixed with different types of pesticide products, the mixture was diluted with hard water for 1 hour and 24 hours, and the compatibility and stability results were observed, as shown in table 2.

TABLE 2

As shown in Table 2, the composition in the example is mixed with a pesticide preparation product for use, the compatibility is good under hard water conditions, the solution is uniform and stable within 1h, and meanwhile, the composition can still be used after being used for 24h for a long time, so that the problems that most of field ground medicines are difficult to find for diluting water sources, a large amount of medicines are dispensed at one time, and the medicines cannot be sprayed in time are solved, and the daily use is greatly facilitated.

(2) The pesticidal properties of the mixtures of the pesticidal adjuvant and the insecticide in the examples and comparative examples were shown in Table 3 according to the method described in GB/T17980.3-2000 by conducting a field test.

TABLE 3

As can be seen from table 3, after the addition of the adjuvant provided by the present invention, the pesticide effect is safe and harmless, the pesticide effect is significantly better than that of the pesticide with the addition of the adjuvant, and if no polyphenols and their polymers or plant essential oils are added, the improvement of the pesticide effect is reduced.

The present invention is illustrated in detail by the examples described above, but the present invention is not limited to the details described above, i.e., it is not intended that the present invention be implemented by relying on the details described above. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.

Claims

1. The pesticide adjuvant is characterized by comprising the following components: plant polyphenol or plant polyphenol polymer, plant essential oil and solvent.

2. The pesticide adjuvant according to claim 1, wherein the plant polyphenol comprises any one or at least two combinations of simple phenolic compounds, benzoquinone compounds, hydroxybenzoic acid compounds, acetophenone compounds, phenylacetic acid compounds, hydroxycinnamic acid compounds, phenylpropene compounds, coumarins compounds, chromone compounds, naphthoquinone compounds, xanthone compounds, anthraquinone compounds, flavonoid compounds or urushiol compounds, preferably urushiol compounds;

preferably, the urushiol compound comprises any one or at least two of urushiol, laccol, stannic naphthol, cardanol, ginkgol, neourushiol, cardol or ginkgol;

3. A pesticide adjuvant according to claim 1 or 2, characterised in that the plant polyphenol polymer comprises any one or a combination of at least two of lignin, condensed tannins, plant polyphenol polycarboxylates or plant polyphenol polyoxyethylene ethers, preferably plant polyphenol polyoxyethylene ethers;

preferably, the condensed tannin is extracted from any one or at least two of persimmon, casuarina equisetifolia, mangrove forest, Kandelia candel, horse chestnut, Rosa multiflora, fructus Rosae Laevigatae, aucklandia japonica, negundo chastetree, acacia taiwan, acacia, vetch, Delavay tree or acacia;

preferably, the plant polyphenol polyoxyethylene ether comprises cardanol polyoxyethylene ether and/or urushiol polyoxyethylene ether;

4. The pesticide adjuvant according to any one of claims 1 to 3, wherein the plant essential oil comprises any one or a combination of at least two of citrus essential oil, oriental essential oil, floral essential oil, vanilla essential oil, resin essential oil, spice essential oil or wood essential oil, preferably citrus essential oil and/or floral essential oil;

preferably, the citrus essential oil comprises any one or at least two of bergamot essential oil, grapefruit essential oil, lemon grass essential oil, lime essential oil, tangerine essential oil or sweet orange essential oil;

5. The pesticide adjuvant according to any one of claims 1 to 4, wherein the solvent comprises any one or a combination of at least two of water, propylene glycol ether, ethanol, isopropanol, n-propanol, n-butanol, isobutanol, soybean oil methyl ester, rapeseed oil methyl ester, cottonseed oil methyl ester, sunflower oil methyl ester, turpentine methyl ester, 150# solvent oil or 200# solvent oil.

6. The pesticide adjuvant according to any one of claims 1 to 5, characterized in that the pesticide adjuvant further comprises a surfactant;

7. The pesticide adjuvant according to any one of claims 1 to 6, characterized by comprising the following components in percentage by mass:

8. the pesticide adjuvant according to any one of claims 1 to 7, characterized by further comprising any one or a combination of at least two of high molecular polymer, vegetable oil, mineral oil or amino acid;

preferably, the high molecular polymer comprises any one or at least two of natural high molecules, modified natural high molecules or synthetic high molecules;

preferably, the natural polymer comprises any one or at least two of cellulose, chitosan, starch, humic acid, water-soluble protein or guar gum;

preferably, the synthetic polymer comprises any one or at least two combinations of polyacrylamide, polyacrylic acid, sulfate polymer, sulfuric acid polymer, polyvinyl alcohol and esterification products thereof, preferably any one or at least two combinations of guar gum, polyacrylamide or polyacrylic acid.

9. A pesticide characterized by comprising the pesticide adjuvant according to any one of claims 1 to 8.

10. The pesticide according to claim 9, wherein the pesticide adjuvant is contained in an amount of 30 to 90% by mass.