Aerial application adjuvant, method of making and use thereof

Abstract

The present application relates to a kind of aerial prevention adjuvants and its preparation method and application, aerial prevention adjuvant includes adhesion promoter, synergist, compatible agent and dispersion medium, adhesion promoter includes oleyl ether and fatty alcohol random polyether;Synergist includes polyoxyethylene ether compound, fatty acid amide and polyethylene glycol fatty acid ester;Compatible agent includes first compatible agent, second compatible agent and third compatible agent, first compatible agent is selected from one or more of alkyl benzene sulfonate, alkyl sulfonate, alkyl sulfonate, alkyl sulfate, second compatible agent is selected from one or more of fatty alcohol polyoxyethylene ether sulfate, fatty alcohol polyoxyethylene ether phosphate, and third compatible agent is polyethylene glycol-5 coconut oil base methyl ammonium sulfate.The aerial prevention synergist provided by the present application has good applicability, can effectively improve the performance of pesticide solution, increase the rainwater scouring resistance of pesticide on target, weaken the adverse effects of rainfall on disease and pest control efficiency while improving the stability of various pesticide formulations and fertilizer mix.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pesticide adjuvants, in particular to a flying prevention adjuvant and a preparation method and application thereof. BACKGROUND

[0002] In agricultural production, pesticides play an important role, especially in crop disease and pest control. At present, crop disease and pest control in China mainly relies on chemical control, that is, using chemical pesticides. After using chemical pesticides, the yield of agricultural products is greatly improved. Plant protection unmanned aerial vehicle is a pesticide spraying machine that can achieve precise spraying of pesticide liquid on ground crops. With the rapid development of professional aerial plant protection, unmanned aerial vehicle spraying has become widespread. This spraying machine has the advantages of good spraying effect, high spraying efficiency, saving of pesticides and water, reduction of pollution, high safety coefficient of personnel control, and small damage to crops. Plant protection unmanned aerial vehicle as a new agricultural pesticide application equipment has developed rapidly in recent years.

[0003] At present, the unmanned aerial vehicle spraying generally adopts the working mode of "one machine multi-pesticide", that is, one spraying machine is used to spray multiple pesticides at a time. In the selection of pesticide combinations, multiple types of pesticide formulations are generally mixed. In order to save pesticide application cost, growth regulators and water-soluble fertilizers are often used together. Because the concentration of the pesticide liquid for flying prevention is high, and the conventional pesticide formulations usually contain thickening agents with large viscosity, directly mixing multiple pesticide formulations can easily cause precipitation, crystallization, flocculation and other adverse conditions. In addition, during the spraying operation of the plant protection unmanned aerial vehicle, the pesticide mixing is mostly manually prepared and then manually added to the unmanned aerial vehicle pesticide tank. Manual mixing of pesticides is often prepared according to the experience of the operation personnel. The above will make the instability of pesticide mixing worse, which may lead to the decrease of pesticide suspension rate, emulsion breaking, pesticide aggregation and even nozzle blockage, thereby reducing the pesticide efficacy and even causing pesticide damage to crops. Therefore, the poor mixing property of pesticides not only causes economic loss, but also causes great harm to the environment.

[0004] The development of plant protection unmanned aerial vehicle is rapid, but is affected by the cost of pesticide preparation and the limitation of processing technology, etc., many pesticide preparations cannot exert their best performance, aiming at the defects existing in pesticide preparation, the aerial spraying adjuvant emerges as the times require. The aerial spraying adjuvant, as the name implies, is a kind of adjuvant that can enhance the interfacial properties such as wetting, adhesion, spreading and penetration of pesticide liquid on the target plant leaves by mixing with pesticide liquid before spraying. With the continuous deepening of the research on pesticide spraying adjuvant, the researchers are more clear and explicit about the function and division of the adjuvant, various functional aerial spraying adjuvants appear on the market, which are not only various and miscellaneous, but also have various mechanisms of action, such as reducing the surface tension of pesticide liquid, increasing the viscosity of pesticide liquid, reducing the particle size of pesticide liquid spray droplets, improving the spreading coefficient of spray droplets, thereby reducing the use amount of pesticide and improving the efficacy, etc. However, these adjuvants are usually not resistant to rain washing. It is well known that the unmanned aerial vehicle is greatly affected by weather, and it is difficult to ensure the utilization rate of pesticide in adverse weather. Among them, if rain occurs immediately after the unmanned aerial vehicle spraying, this method will cause a part of the pesticide liquid to be washed away before it reaches the plant leaves, the pesticide liquid loss is serious, the utilization rate of pesticide is low, not only causes the increase of prevention and control cost, but also pollutes the environment.

[0005] Therefore, with the development of agricultural mechanization in China, especially the rapid development of plant protection unmanned aerial vehicle spraying, in order to make the pesticide exert its effect, one is to ensure the stable mixing of various pesticides, and the other is to reduce the influence of rain, an adverse environmental factor, on pesticide liquid and improve the utilization rate of pesticide. SUMMARY

[0006] The purpose of the present application is to provide a kind of aerial defense adjuvant with good adaptability and good wash resistance, and its preparation method and application.

[0007] To achieve the above purpose, the technical scheme adopted by the present application is:

[0008] The present application provides an aerial defense adjuvant, comprising:

[0009] The adhesion promoter comprises an oleyl ether and a fatty alcohol random polyether;

[0010] The synergist comprises a polyoxyethylene ether compound, a fatty acid amide and a polyethylene glycol fatty acid ester;

[0011] The compatibility agent comprises a first compatibility agent, a second compatibility agent and a third compatibility agent, the first compatibility agent is selected from one or more of alkyl benzene sulfonate, alkyl sulfonate, alkyl sulfonate and alkyl sulfate, the second compatibility agent is selected from one or more of fatty alcohol polyoxyethylene ether sulfate and fatty alcohol polyoxyethylene ether phosphate, and the third compatibility agent is polyethylene glycol-5 methyl ammonium cocoyl sulfate; and

[0012] a dispersing medium selected from one or more of a fatty acid ester, a hydrogenated vegetable oil, a polyamide-modified hydrogenated vegetable oil.

[0013] The adhesion promoter in the aerial application aid can improve the wettability between the liquid and the solid by improving the interfacial properties, thereby improving the adhesion, and it also has an adhesion effect, can synergistically improve the erosion resistance with synergists, compatibilizers and the like, and effectively reduce the loss of liquid. The synergist is selected from non-ionic surfactants with an HLB value in the range of 10-18, which can be mixed with the dispersing medium and swelled by heating, significantly improving the dispersion and adhesion of various particles in the system while improving the synergistic effect. The polyethylene glycol-5 ammonium methyl cocoyl sulfate structure in the compatibilizer is stable, with a moderate molecular weight, stable to acid and alkali, i.e. stable in a wide pH range, maintaining its performance unchanged in both acidic and alkaline environments. At an appropriate concentration, it can form a micellar structure and coexist harmoniously with other reagents to form a stable mixture, which is beneficial to emulsification, dispersion and stability, and also has excellent antistatic effect, which can effectively neutralize the charge and reduce particle adsorption and aggregation, thereby effectively improving the stability of the mixed pesticide. In addition, it can also reduce the evaporation time, bringing more significant effect on aerial application erosion resistance. Therefore, the aerial application aid of the present application not only has high adaptability to various water-soluble fertilizers and pesticides, but also has good adaptability to high-salt systems, uniformity and stability of mixed pesticides, safety to crops after mixing, no phytotoxicity, can effectively improve the performance of the liquid, increase the rainwater erosion resistance of the pesticide on the target, weaken the adverse effects of rainfall on the control efficiency of pests and diseases, improve the utilization rate of pesticides, and reduce the pollution of pesticide preparations to the environment.

[0014] Preferably, the mass fraction of each component is as follows, based on 100% of the total mass of the aerial application aid:

[0015] The adhesion promoter 2% to 6%;

[0016] The synergist 10% to 18%;

[0017] The compatibilizer 8% to 14%;

[0018] The dispersing medium 62% to 80%.

[0019] Further preferably, the mass fraction of each component is as follows, based on 100% of the total mass of the aerial application aid:

[0020] The adhesion promoter 3% to 5%;

[0021] The synergist 13% to 16%;

[0022] The compatibilizer 10% to 14%;

[0023] The dispersing medium 65% to 74%.

[0024] Preferably, the mass ratio of the oleyl ether to the fatty alcohol random polyether is 1:(0.5-1.5), further preferably 1:(0.8-1.2), such as 1:0.8, 1:0.9, 1:1, 1:1.1 or 1:1.2.

[0025] In some embodiments, the oleyl ether is oleyl polyoxyethylene ether.

[0026] In some embodiments, the fatty alcohol random polyether is selected from one or more of a fatty alcohol random polyether having a carbon atom number of 2-6. The fatty alcohol random polyether having a carbon atom number of 2-6 includes butanol random polyether, propanediol random polyether, glycerol random polyether, butanetriol random polyether.

[0027] Preferably, the mass ratio of the polyoxyethylene ether compound, the fatty acid amide and the polyethylene glycol fatty acid ester is 1:(0.5-1):(0.6-1.5), further preferably 1:(0.7-0.9):(1-1.3).

[0028] In some embodiments, the polyoxyethylene ether compound is a plant oil-based polyoxyethylene ether. The plant oil-based polyoxyethylene ether is selected from one or more of castor oil polyoxyethylene ether, hydrogenated castor oil polyoxyethylene ether, cocamide polyoxyethylene ether.

[0029] In some embodiments, the fatty acid amide is selected from one or both of cocamide diethanolamide and stearic acid diethanolamide.

[0030] In some embodiments, the polyethylene glycol fatty acid ester is selected from one or both of polyethylene glycol monooleate and polyethylene glycol dioleate.

[0031] Preferably, the mass ratio of the first compatibilizer, the second compatibilizer and the third compatibilizer is 1:(1-1.5):(0.5-2), further preferably 1:(1.2-1.5):(1.5-1.8).

[0032] Preferably, the fatty acid ester is selected from one or more of fatty acid methyl ester, fatty acid ethyl ester, fatty acid propyl ester, fatty acid isobutyl ester, fatty acid glycerol ester. The fatty acid in the fatty acid ester includes but is not limited to oleic acid.

[0033] Further preferably, the dispersion medium is selected from one or both of methyl oleate and ethyl oleate.

[0034] In some embodiments, the dispersion medium is methyl oleate and ethyl oleate. The mass ratio of the methyl oleate and the ethyl oleate in the dispersion medium is (1.5-2.5):1, further preferably (1.8-2.2):1.

[0035] In some specific and preferred embodiments, the mass ratio of each component to the total mass of the aerial pesticide adjuvant is as follows:

[0036] 2% to 6% of an adhesion promoter, the adhesion promoter comprising an oleyl ether and a fatty alcohol random polyether, the mass ratio of the oleyl ether to the fatty alcohol random polyether being 1:(0.5 to 1.5);

[0037] 10% to 18% of a synergist, the synergist comprising a polyoxyethylene ether compound, a fatty acid amide, and a polyethylene glycol fatty acid ester, the mass ratio of the polyoxyethylene ether compound, the fatty acid amide, and the polyethylene glycol fatty acid ester being 1:(0.5 to 1):(0.6 to 1.5);

[0038] 8% to 14% of a compatibilizer, the compatibilizer comprising a first compatibilizer, a second compatibilizer, and a third compatibilizer, the first compatibilizer being selected from one or more of an alkyl benzene sulfonate, an alkyl sulfonate, an alkyl sulfonate, and an alkyl sulfate, the second compatibilizer being selected from one or more of a fatty alcohol polyoxyethylene ether sulfate and a fatty alcohol polyoxyethylene ether phosphate, the third compatibilizer being polyethylene glycol-5 cocoyl methyl sulfate ammonium, the mass ratio of the first compatibilizer, the second compatibilizer, and the third compatibilizer being 1:(1 to 1.5):(0.5 to 2);

[0039] 62% to 80% of a dispersing medium, the dispersing medium being selected from one or more of a fatty acid ester, a hydrogenated vegetable oil, and a polyamide-modified hydrogenated vegetable oil.

[0040] The second aspect of the present application provides a preparation method of the aerial pesticide adjuvant as described above, comprising the following steps:

[0041] Step 1, mixing the compatibilizer with the dispersing medium to obtain solution A;

[0042] Step 2, mixing the synergist with the solution A to obtain solution B;

[0043] Step 3, mixing the adhesion promoter with the solution B to obtain the aerial pesticide adjuvant.

[0044] Preferably, the mixing temperature of the step 1 is controlled to be 40°C to 55°C.

[0045] Preferably, the mixing temperature of the step 3 is controlled to be 55°C to 70°C.

[0046] Further preferably, after the end of the step 3 mixing, the mixing system is subjected to high-speed shearing. The specific shearing speed can refer to the conventional shearing speed in the art without specific limitation.

[0047] The third aspect of the present application provides an application of the aerial control aid as described above, comprising controlling crop diseases by the unmanned aerial vehicle after mixing the aerial control aid with the pesticide preparation.

[0048] Preferably, the mass ratio of the aerial control aid to the pesticide preparation is (0.01-0.25):1, and more preferably (0.02-0.2):1, such as 0.02:1, 0.05:1, 0.08:1, 0.1:1, 0.15:1, 0.2:1.

[0049] Preferably, the type of the pesticide preparation is one or more of soluble powder, wettable powder, water dispersible granule, suspension concentrate, microemulsion, soluble liquid, water emulsion, water agent, and emulsifiable concentrate.

[0050] Preferably, the aerial control aid, the pesticide preparation, the water-soluble fertilizer, and water are mixed to form a pesticide composition, and then the crop diseases are controlled by the unmanned aerial vehicle.

[0051] In some embodiments, the water-soluble fertilizer is selected from one or more of potassium dihydrogen phosphate, dipotassium hydrogen phosphate, plant growth regulator, leaf fertilizer of macroelement, meso-element, and microelement, and water-soluble leaf fertilizer containing amino acid, humic acid, alginic acid, sugar alcohol, etc.

[0052] In some embodiments, the pesticide composition comprises the following components, with the total mass of the pesticide composition being 100%:

[0053] aerial control aid 0.1%-5%;

[0054] pesticide preparation 10%-35%;

[0055] water-soluble fertilizer 1%-10%;

[0056] water in an amount sufficient to make up the total mass.

[0057] The fourth aspect of the present application also provides a pesticide composition suitable for aerial control, comprising the aerial control aid as described above and pesticide preparation, water-soluble fertilizer, and water. The components and the ratio of the pesticide composition are as described above, and will not be repeated here.

[0058] The fifth aspect of the present application also provides a preparation method of the pesticide composition as described above, comprising the following steps:

[0059] (1) adding part of water in a container;

[0060] (2) sequentially adding water-soluble fertilizer and pesticide preparation to the water in step (1) to obtain a mixed pesticide solution, mixing the aerial control aid with the remaining water or part of the water, then adding the mixed pesticide solution, adding water to make up the total mass, and stirring to obtain the pesticide composition.

[0061] Preferably, when the pesticide formulations are multiple different formulations, the mixing order of the pesticide formulations is: micro-fertilizer, water-soluble fertilizer, wettable powder, water dispersible granule, suspension concentrate, microemulsion, water-in-oil emulsion, water agent, and oil-in-water emulsion are sequentially added. After adding each pesticide formulation, fully stir and mix, and then add the next one.

[0062] Thanks to the above technical solution, the present application has the following advantages compared with the prior art:

[0063] The aerial spraying synergist provided by the present application has good applicability, is suitable for various pesticide formulations and water-soluble fertilizers, can improve the stability of various pesticide formulations and fertilizers, effectively improve the performance of pesticide liquid, increase the rainwater erosion resistance of pesticides on targets, weaken the adverse effects of rainfall on the control efficiency of pests and diseases, improve the utilization rate of pesticides, ensure the pesticide effect, and reduce the pollution to the environment. The aerial spraying synergist provided by the present application is green and environmentally friendly, easy to degrade, and safe to crops. DETAILED DESCRIPTION

[0064] The present application will be further described below in combination with examples. However, the present application is not limited to the following examples. The implementation conditions used in the examples can be further adjusted according to different requirements of specific use, and the implementation conditions not mentioned are conventional conditions in the industry. The technical features involved in each embodiment of the present application can be combined with each other as long as there is no conflict between them.

[0065] Unless otherwise specified, the raw materials involved in the following are commercially available or can be prepared according to the prior art, wherein, oleyl polyoxyethylene ether, OV-5, is purchased from Haian Petroleum Chemical Plant in Jiangsu Province;

[0066] Butyl alcohol random polyether, BPE-1000, is purchased from Haian Petroleum Chemical Plant in Jiangsu Province;

[0067] Castor oil polyoxyethylene ether, BY110, is purchased from Linyi Guolai Chemical Co., Ltd.;

[0068] Coco fatty acid diethanolamide, 6501, is purchased from Haian Petroleum Chemical Plant in Jiangsu Province;

[0069] Polyethylene glycol oleate, PEG600MO, is purchased from Haian Petroleum Chemical Plant in Jiangsu Province;

[0070] Alkyl benzene sulfonate (calcium dodecyl benzene sulfonate) is purchased from Haian Petroleum Chemical Plant in Jiangsu Province;

[0071] Fatty alcohol polyoxyethylene ether phosphate, AEO-3P, is purchased from Haian Petroleum Chemical Plant in Jiangsu Province;

[0072] Polyethylene glycol-5 coco methyl sulfate ammonium is purchased from Shanghai Yingchuang.

[0073] A preparation method of a flying prevention aid agent for improving the stability and wash resistance of pesticide mixing, comprising the following steps:

[0074] Step 1, according to the following table 1, the raw materials are weighed and prepared, and then a plurality of compatibility agents are mixed uniformly and added to the dispersion medium, and stirred and heated at 45-50℃ for 2h to obtain solution A.

[0075] Step 2, the synergist is added to solution A and mixed uniformly to obtain solution B, wherein the plurality of synergists can be added to solution A separately or mixed together and then added to solution A.

[0076] Step 3, the adhesion promoter is added to solution B, and stirred and heated at 60-65℃ for 1-2h, and then sheared at high speed for 5-10min after constant temperature to obtain the flying prevention aid agent, wherein the plurality of adhesion promoters can be added to solution B separately or mixed together and then added to solution B.

[0077] Table 1

[0078]

[0079]

[0080] In the above table, "%" means mass percentage, for example, 2% of oleyl polyoxyethylene ether in example 1 means that the mass percentage of oleyl polyoxyethylene ether in the flying prevention aid agent is 2%.

[0081] Performance detection:

[0082] (1) Sample routine index detection: the performance of the samples prepared in the above examples and comparative examples is detected, and the appearance of the flying prevention aid agent is observed; the solid-liquid interface adhesion is measured by using the DCAT 21 surface tension instrument by using the hanging ring method, and the results are shown in table 2. The emulsification evaluation criteria are as follows:

[0083] A excellent: the emulsion is thick cream color or slightly blue, and has a milky light at the bottom.

[0084] B good: the emulsion is in an emulsified state without luster.

[0085] C acceptable: the emulsion is off-white, has visible particles or oil floating.

[0086] D poor: almost not emulsified.

[0087] Table 2 Comparison of flying prevention aid agent detection indexes

[0088] No. State Emulsifying effect Adhesion (μN) Example 1 yellow homogeneous liquid A 62.96 Example 2 yellow homogeneous liquid A 58.99 Example 3 yellow homogeneous liquid B 60.30 Example 4 yellow homogeneous liquid B 60.10 Example 5 yellow homogeneous liquid A 61.22 Example 6 yellow homogeneous liquid A 61.87 Example 7 yellow homogeneous liquid A 59.90 Example 8 yellow homogeneous liquid A 59.45 Comparative Example 1 yellow homogeneous liquid A 55.37 Comparative Example 2 yellow homogeneous liquid B 58.80 Comparative Example 3 yellow homogeneous liquid B 57.87 Comparative Example 4 yellow homogeneous liquid D 58.20 Comparative Example 5 yellow homogeneous liquid B 58.77 Comparative Example 6 yellow homogeneous liquid C 57.96 Comparative Example 7 yellow homogeneous liquid B 58.11

[0089] As shown in Table 2, compared with the comparative example 1 without the adhesion promoter, the adhesion of the aerial spraying aid of the present application can be significantly improved by adding the adhesion promoter in the aerial spraying aid containing the synergist, the compatibilizer and the dispersion medium, and the adhesion is improved more obviously with the increase of the amount of the adhesion promoter, but when the amount of the adhesion promoter is too large, the compatibility of other components will be affected, therefore, the amount of the adhesion promoter should not be too large, preferably 2% to 6% of the total mass of the aerial spraying aid, and most preferably 4%. Of course, the components and the amount of the synergist, the compatibilizer and the dispersion medium will also affect the adhesion and the emulsification effect, and the adhesion of the aerial spraying aid is further improved by optimizing the components and the amount of the synergist, the compatibilizer and the dispersion medium, so that the aerial spraying aid prepared has better adhesion, emulsification effect and appearance.

[0090] (2) Pesticide mixing stability determination: the pesticide preparation is mixed with the aerial spraying aid and water in the above examples and comparative examples (5 mL of the aerial spraying aid, and water is added to make up the total mass of the aerial spraying aid and water to 0.5 kg), and the test is carried out at room temperature (25±5℃), and the pesticide preparation used is composed of the following pesticides (0.5 kg in total): 25% pyraclostrobin suspension concentrate 10 g (Ningbo Sanjiangyi), 45% prochloraz emulsion in water 10 g (Guangxi Beijiaer), 80% Bordeaux liquid wettable powder 5 g (United States Xianlong), 70% imidacloprid water dispersible granules 10 g (Hebei Yeta agricultural chemical), 1.8% abamectin emulsion 10 g (Zhejiang Qianjiang biological), 6% bifenthrin and dinotefuran microemulsion 10 g (Hunan Zefeng), monopotassium phosphate 10 g (Anhui Hefeng), and medium element water-soluble fertilizer 20 g (Bayer).

[0091] The mixing order of the pesticide preparation is: micro-fertilizer, water-soluble fertilizer, wettable powder, water dispersible granules, suspension concentrate, microemulsion, emulsion in water, water agent, and emulsion oil are added in turn. After each pesticide preparation is added, it is fully stirred and mixed before the next one is added.

[0092] The control group is the mixture of the pesticide preparation and the standard hard water, and the results are shown in Table 3.

[0093] Table 3

[0094]

[0095]

[0096] As shown in Table 3, the aerial spraying aid prepared in the examples of the present application has good pesticide mixing stability, and especially the aerial spraying aid of example 1 does not show unstable phenomena such as liquid layering and lower layer precipitation within 8 hours, which indicates that the aerial spraying aid can significantly improve the suspension of pesticide particles and control the particle agglomeration and sedimentation.

[0097] By comparing the examples and the comparative examples of the present application, the components and the amount of the adhesion promoter, the synergist and the compatibilizer have great influence on the stability of the mixing of the plant protection adjuvant and the pesticide, and when the components or the amount thereof is not appropriate, delamination, oil absorption, precipitation and other phenomena are likely to occur.

[0098] (3) Erosion performance determination: indoor simulation rainwater erosion test, the method is as follows:

[0099] ① The upper surface of the corn leaf with uniform leaf age is selected as the research surface. The same part of the corn disc with uniform size is cut by a circular hole sampler, the leaf vein is avoided, the upper surface of the leaf is upward, and the double-sided tape is used to fix the corn disc in the middle of the glass slide. The test solution of the above examples and the comparative examples is added into the azoxystrobin solution with a mass fraction of 1%, and the mass ratio of the test solution to the azoxystrobin solution with a mass fraction of 1% is 1:50.

[0100] ② The liquid medicine is sucked by a microsyringe, and is dropped on the central part of the corn leaf, 1 drop (1.0 μL) per leaf. After the liquid medicine is dropped on the leaf, the leaf is naturally dried for 30 min, and is placed in a self-made indoor erosion device. The deposited substance on the leaf is washed by deionized water in a burette, 6 times per leaf, and 1.0 mL of water is used each time. The azoxystrobin solution with a mass fraction of 1% without the addition of the plant protection adjuvant is used as a control, and each treatment is repeated 3 times, and the results are shown in Table 4.

[0101] Table 4

[0102]

[0103]

[0104] It can be seen from Table 4 that the plant protection adjuvant prepared in the present application can significantly increase the pesticide residue on the target after water erosion, thereby effectively improving the utilization rate of the pesticide, reducing the pollution of the pesticide preparation to the environment, and being beneficial to the protection of the ecological environment.

[0105] (4) Efficacy determination

[0106] The effects of the plant protection unmanned aerial vehicle and the plant protection synergist of the present application on the control of wheat aphids are tested, and the test method is as follows: the unmanned aerial vehicle is sprayed by the unmanned aerial vehicle plant protection spraying method, the unmanned aerial vehicle is selected as DJI T50, the spraying flight parameters are as follows: the height is 1.5 m, the speed is 5 m / s, and the spraying liquid amount is 1.5 L / acre. The operation temperature is 30 ℃, the wind force is 2-5 m / s, the unmanned aerial vehicle is 500 m x 100 m (7.5 acres) per treatment, and no repetition is arranged; the ground pesticide application instrument treatment and the blank control are 50 m x 10 m (0.75 acres).

[0107] Five points are sampled in each plot, and 10 aphid plants (ears) are fixed at each point. The aphid base number is investigated before pesticide application, and the aphid population is investigated 5d, 10d and 15d after pesticide application, and the calculation method is as follows:

[0108] The reduction rate of insect population (%) = [(the number of insect population before treatment - the number of insect population after treatment) / the number of insect population before treatment] * 100;

[0109] The control effect (%) = [1 - (the number of insect population before treatment in the control area * the number of insect population after treatment in the treatment area) / (the number of insect population after treatment in the control area * the number of insect population before treatment in the treatment area)] * 100;

[0110] The pesticide in Table 5 is mixed with the aerial application aid (10 mL / acre), water (1.5 L / acre), and then the control effect is determined, and the determination results are shown in Table 5.

[0111] Table 5

[0112]

[0113]

[0114] As can be seen from Table 5, the aerial application aid prepared by the application can effectively improve the pesticide application effect and control efficiency of the plant protection unmanned aerial vehicle.

[0115] The above has described the application in detail, which is intended to enable those skilled in the art to understand the content of the application and implement it, and cannot limit the protection scope of the application. Any equivalent changes or modifications made according to the spirit and principle of the application should be covered within the protection scope of the application.

Claims

1. An aerial spraying adjuvant, characterized in that, Based on the total mass of the aforementioned aerial spraying adjuvant being 100%, the mass percentages of each component are as follows: The adhesion promoter is 2% to 6%, wherein the adhesion promoter includes oleyl alcohol ether and fatty alcohol random polyether, wherein the mass ratio of oleyl alcohol ether to fatty alcohol random polyether is 1:(0.5 to 1.5), wherein the oleyl alcohol ether is oleyl alcohol polyoxyethylene ether, and the fatty alcohol random polyether is selected from one or more fatty alcohol random polyethers having 2 to 6 carbon atoms. The synergist comprises 10% to 18% polyoxyethylene ether compounds, fatty acid amides, and polyethylene glycol fatty acid esters. The mass ratio of the polyoxyethylene ether compounds, fatty acid amides, and polyethylene glycol fatty acid esters is 1:(0.5~1):(0.6~1.5). The polyoxyethylene ether compounds are selected from one or more of castor oil polyoxyethylene ether, hydrogenated castor oil polyoxyethylene ether, and cocoamide polyoxyethylene ether. The fatty acid amides are selected from one or two of cocoamide and stearic acid diethanolamide. The polyethylene glycol fatty acid esters are selected from one or two of polyethylene glycol monooleate and polyethylene glycol dioleate. The compatibilizer comprises 8%~14%, wherein the compatibilizer includes a first compatibilizer, a second compatibilizer, and a third compatibilizer, wherein the mass ratio of the first compatibilizer, the second compatibilizer, and the third compatibilizer is 1:(1~1.5):(0.5~2), wherein the first compatibilizer is selected from one or more of alkylbenzene sulfonates, alkyl sulfonates, alkyl sulfonates, and alkyl sulfates, the second compatibilizer is selected from one or more of fatty alcohol polyoxyethylene ether sulfates and fatty alcohol polyoxyethylene ether phosphates, and the third compatibilizer is polyethylene glycol-5 cocoyl methyl sulfate ammonium; and, The dispersion medium comprises 62% to 80%, wherein the dispersion medium is selected from one or more of fatty acid esters, hydrogenated vegetable oils, and polyamide-modified hydrogenated vegetable oils.

2. The aerial spraying adjuvant according to claim 1, characterized in that, Based on the total mass of the aforementioned aerial spraying adjuvant being 100%, the mass percentages of each component are as follows: Adhesion promoter 3%~5%; Synergist 13%~16%; Compatibilizer 10%~14%; Dispersion medium 65%~74%.

3. The method for preparing the aerial spraying adjuvant as described in claim 1 or 2, characterized in that, Includes the following steps: Step 1: Mix the compatibilizer with the dispersion medium to obtain solution A; Step 2: Mix the synergist with solution A to obtain solution B; Step 3: Mix the adhesion promoter with the solution B to obtain the flight protection additive.

4. The application of the aerial spraying adjuvant as described in claim 1 or 2, characterized in that, The aerial spraying adjuvant is mixed with pesticide formulations and then used to control crop diseases via drones.

5. The application of the aerial spraying adjuvant according to claim 4, characterized in that, The mass ratio of the aerial spraying adjuvant to the pesticide formulation is (0.01~0.25):1; and / or, The pesticide formulation is one or more of the following types: soluble powder, wettable powder, water-dispersible granules, suspension concentrate, microemulsion, soluble concentrate, water-in-oil emulsion, aqueous solution, and emulsifiable concentrate.

6. A pesticide composition suitable for aerial spraying, characterized in that, Includes the aerial spraying adjuvant, pesticide formulation, water-soluble fertilizer, and water as described in claim 1 or 2.

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