Flight control additive as well as preparation method and application thereof

Abstract

The invention relates to a flight control assistant and a preparation method and application thereof, the flight control assistant comprises an adhesion promoter, a synergist, a compatilizer and a dispersion medium, and the adhesion promoter comprises oleyl alcohol ether and fatty alcohol random polyether; the synergist comprises a polyoxyethylene ether compound, fatty acid amide and polyethylene glycol fatty acid ester; the compatibilizer comprises a first compatibilizer, a second compatibilizer and a third compatibilizer, the first compatibilizer is selected from one or more of alkylbenzene sulfonate, alkyl sulfonate, alkyl sulfonate and alkyl sulfate, the second compatibilizer is selected from one or more of fatty alcohol-polyoxyethylene ether sulfate and fatty alcohol-polyoxyethylene ether phosphate, and the third compatibilizer is selected from one or more of fatty alcohol-polyoxyethylene ether sulfate and fatty alcohol-polyoxyethylene ether phosphate. And the third compatilizer is polyethylene glycol-5 coco-ammonium methyl sulfate. The flight control synergist provided by the invention is good in applicability, and can effectively improve the liquid medicine performance while improving the mixing stability of various pesticide preparations and fertilizers, increase the rain wash resistance of pesticides on targets and weaken the adverse effect of rainfall weather on the prevention effect of diseases and insect pests.

Description

Technical Field

[0001] The invention relates to the technical field of pesticide adjuvants, and in particular to an aerial spraying adjuvant and a preparation method and application thereof. Background Art

[0002] In agricultural production, pesticides play an important role, especially in the prevention and control of crop diseases and pests. At present, the prevention and control of crop diseases and pests in my country mainly relies on chemical prevention, that is, the use of chemical pesticides. After the use of chemical pesticides, the output of agricultural products has been greatly improved. Plant protection drones are a type of pesticide spraying machinery that can accurately spray liquid on ground crops. With the rapid development of professional aerial plant protection, drone spraying has gradually become widespread. This type of spraying machinery has the advantages of good spraying effect, high spray efficiency, saving medicine, saving water, reducing pollution, high safety factor of control personnel, and less crop damage. As a new agricultural pesticide application equipment, plant protection drones have developed rapidly in recent years.

[0003] At present, drone spraying generally adopts the working mode of "one machine, multiple drugs", that is, one spraying device is used to spray multiple pesticides at a time, and the combination of pesticides is generally a mixture of multiple types of pesticide preparations. In order to save the cost of application, it is often applied together with growth regulators and water-soluble fertilizers. Since the concentration of the spray solution for aerial spraying is high, and conventional pesticide preparations usually contain thickeners and have a high viscosity, direct mixing of multiple agents is prone to adverse conditions such as precipitation, crystallization, and flocculation. In addition, when plant protection drones are spraying, pesticides are mostly mixed manually and then added to the drone medicine box manually. Manually mixed pesticides are often prepared based on the operator's experience. The above will increase the instability of pesticide mixing, which may lead to a decrease in the suspension rate of pesticides, demulsification, and thus cause pesticide coagulation. In severe cases, it may cause nozzle clogging, thereby reducing the efficacy of the drug and even causing pesticide damage to crops. Therefore, the poor compatibility of pesticides not only causes economic losses on the one hand, but also has great harm to the environment on the other hand.

[0004] Plant protection drones are developing rapidly, but due to the cost of pesticide formulations and the limitations of processing technology, many pesticide formulations cannot perform at their best. Aiming at the defects of pesticide formulations themselves, aerial spray adjuvants have emerged. As the name suggests, aerial spray adjuvants are a type of adjuvant that is mixed with pesticide solution before application to enhance the interfacial properties of the solution such as wetting, adhesion, spreading and penetration on the leaves of target plants. With the continuous deepening of research on pesticide spray adjuvants, researchers have a clearer and more specific division of their functions and effects. Various functional aerial spray adjuvants have appeared on the market, which are not only diverse and complex, but also have various synergistic mechanisms, such as reducing the surface tension of the solution, increasing the viscosity of the solution, reducing the particle size of the spray droplets of the solution, and increasing the spreading coefficient of the droplets, thereby reducing the amount of pesticide used and improving the efficacy. However, these adjuvants are usually not resistant to rain erosion. As we all know, since drones are greatly affected by weather, it is difficult to ensure the utilization rate of pesticides in bad weather. Among them, if it rains immediately after the drone sprays, this method will cause part of the liquid medicine to be washed away before it reaches the plant leaves, resulting in serious loss of liquid medicine and low pesticide utilization rate, which will not only increase the cost of prevention and control, but also pollute the environment.

[0005] Therefore, with the development of agricultural mechanization in my country, especially the rapid development of plant protection drone spraying, in order to make pesticides exert their effects, it is necessary to ensure the stability of the mixture of multiple pesticides; second, reduce the impact of rainfall, an adverse environmental factor, on the liquid medicine and improve the utilization rate of pesticides. Summary of the invention

[0006] The purpose of the present invention is to provide a flying control auxiliary agent with good adaptability and good scour resistance, and a preparation method and application thereof.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] The present invention provides a kind of flying control auxiliary agent on the one hand, comprising:

[0009] an adhesion promoter, wherein the adhesion promoter comprises oleyl alcohol ether and fatty alcohol random polyether;

[0010] Synergists, including polyoxyethylene ether compounds, fatty acid amides and polyethylene glycol fatty acid esters;

[0011] A compatibilizer, wherein the compatibilizer comprises a first compatibilizer, a second compatibilizer and a third compatibilizer, wherein the first compatibilizer is selected from one or more of alkylbenzene sulfonate, alkyl sulfonate ester, alkyl sulfonate and alkyl sulfate, the second compatibilizer is selected from one or more of fatty alcohol polyoxyethylene ether sulfate and fatty alcohol polyoxyethylene ether phosphate, and the third compatibilizer is polyethylene glycol-5 coconut oil ammonium methyl sulfate; and,

[0012] The dispersion medium is selected from one or more of fatty acid esters, hydrogenated vegetable oils, and polyamide-modified hydrogenated vegetable oils.

[0013] The adhesion promoter in the fly control auxiliary agent of the present invention can increase the wettability between the liquid and the solid by improving the interface performance, thereby improving the adhesion, and it also has an adhesion effect, and can cooperate with synergists, compatibilizers, etc. to improve the anti-scouring performance and effectively reduce the loss of the liquid medicine. The synergist is selected from a non-ionic surfactant, and the HLB range value is 10-18. It can be mixed with a dispersion medium and heated to swell, and can significantly improve the dispersibility and adhesion of various particles in the system while improving the synergistic effect. The polyethylene glycol-5 coconut oil ammonium methyl sulfate in the compatibilizer has a stable structure, moderate molecular weight, and is stable to acids and alkalis, that is, it remains stable in a wide pH range. Whether in an acidic or alkaline environment, its performance can remain unchanged. At an appropriate concentration, it can form a micellar structure and can coexist harmoniously with other reagents to form a stable mixture, which is conducive to emulsification, dispersion and stability. It also has excellent antistatic effects. In the environment of pesticide mixing, it can effectively neutralize charges and reduce particle adsorption and sedimentation, thereby effectively improving the stability of multiple agents after mixing; in addition, it can also reduce the evaporation time, bringing more significant effects to the evaporation resistance and sedimentation promotion of flying pest control. Therefore, the aerial spraying adjuvant of the present invention is not only highly compatible with various water-soluble fertilizers and pesticides, but also compatible with high-salt systems, and has good uniformity and stability of mixed pesticides. It is safe to crops after mixed use and will not cause pesticide damage. It can effectively improve the performance of the liquid medicine, increase the ability of the pesticide on the target to withstand rain erosion, weaken the adverse effects of rainy weather on the control effect of pests and diseases, improve the utilization rate of pesticides, and reduce the pollution of the environment caused by pesticide preparations.

[0014] Preferably, taking the total mass of the flying control auxiliary agent as 100%, the mass proportions of each component are as follows:

[0015] Adhesion promoter 2% to 6%;

[0016] Synergist 10% to 18%;

[0017] Compatibilizer 8% to 14%;

[0018] Dispersion medium 62%~80%.

[0019] Further preferably, taking the total mass of the flying control auxiliary agent as 100%, the mass proportions of each component are as follows:

[0020] Adhesion promoter 3% to 5%;

[0021] Synergist 13% to 16%;

[0022] Compatibilizer 10% to 14%;

[0023] Dispersion medium 65%~74%.

[0024] Preferably, the mass ratio of the oleyl alcohol ether to the fatty alcohol random polyether is 1:(0.5-1.5), more 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 alcohol ether is oleyl alcohol polyoxyethylene ether.

[0026] In some embodiments, the fatty alcohol random polyether is selected from one or more of the fatty alcohol random polyethers having carbon atoms of 2 to 6. The fatty alcohol random polyethers having carbon atoms of 2 to 6 include butanol random polyether, propylene glycol random polyether, glycerol random polyether, and 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), and more preferably 1:(0.7-0.9):(1-1.3).

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

[0029] In some embodiments, the fatty acid amide is selected from one or both of coconut fatty acid 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), and more 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, and fatty acid glyceride. 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 methyl oleate to ethyl oleate in the dispersion medium is (1.5-2.5):1, and more preferably (1.8-2.2):1.

[0035] In some specific and preferred embodiments, taking the total mass of the flying control auxiliary agent as 100%, the mass proportions of the components are as follows:

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

[0037] 10% to 18% of a synergist, wherein the synergist comprises a polyoxyethylene ether compound, a fatty acid amide and a polyethylene glycol fatty acid ester, and 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);

[0038] 8% to 14% of a compatibilizer, wherein the compatibilizer comprises a first compatibilizer, a second compatibilizer and a third compatibilizer, wherein the first compatibilizer is selected from one or more of alkylbenzene sulfonate, alkyl sulfonate ester, alkyl sulfonate and alkyl sulfate, the second compatibilizer is selected from one or more of fatty alcohol polyoxyethylene ether sulfate and fatty alcohol polyoxyethylene ether phosphate, the third compatibilizer is polyethylene glycol-5 coconut oil ammonium methyl sulfate, and the mass ratio of the first compatibilizer, the second compatibilizer and the third compatibilizer is 1: (1 to 1.5): (0.5 to 2);

[0039] The dispersion medium accounts for 62% to 80%, and the dispersion medium is selected from one or more of fatty acid esters, hydrogenated vegetable oils, and polyamide-modified hydrogenated vegetable oils.

[0040] The second aspect of the present invention provides a method for preparing the above-mentioned flying control auxiliary agent, comprising the following steps:

[0041] Step 1, mixing a compatibilizer and a dispersion medium to obtain a solution A;

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

[0043] Step 3: Mix the adhesion promoter with the solution B to obtain the anti-flying agent.

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

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

[0046] More preferably, after the mixing in step 3 is completed, the mixed system is subjected to high-speed shearing. The specific shearing speed can refer to the conventional shearing speed in the art and is not specifically limited.

[0047] A third aspect of the present invention provides an application of the aerial pest control adjuvant as described above, comprising mixing the aerial pest control adjuvant with a pesticide preparation and then controlling crop diseases by using an unmanned aerial vehicle.

[0048] Preferably, the feeding mass ratio of the flying control adjuvant 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 pesticide formulation is one or more of soluble powder, wettable powder, water dispersible granules, suspension, microemulsion, soluble solution, emulsion in water, aqueous solution and emulsifiable concentrate.

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

[0051] In some embodiments, the water-soluble fertilizer is selected from one or more of potassium dihydrogen phosphate, dipotassium hydrogen phosphate, plant growth regulators, foliar fertilizers containing macroelements, medium elements, and trace elements, and water-soluble foliar fertilizers containing amino acids, humic acid, alginic acid, sugar alcohols, etc.

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

[0053] Fly control auxiliary agent 0.1%~5%;

[0054] Pesticide preparations 10% to 35%;

[0055] Water-soluble fertilizer 1% to 10%;

[0056] Water balance.

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

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

[0059] (1) Add some water into the container;

[0060] (2) Adding water-soluble fertilizer and pesticide preparation to the water in step (1) in sequence to prepare a mixed liquid, mixing the synergist with all or part of the remaining water and then adding it to the mixed liquid, replenishing water, and stirring to obtain the pesticide composition.

[0061] Preferably, when the pesticide preparation is a plurality of different preparations, the order of mixing the pesticide preparations is: adding in sequence according to the following: micronutrient fertilizer, water-soluble fertilizer, wettable powder, water-dispersible granule, suspension, microemulsion, emulsion in water, aqueous solution, emulsifiable concentrate. After each pesticide preparation is added, stir and mix thoroughly before adding the next one.

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

[0063] The aerial pest control synergist provided by the present invention has good applicability and is applicable to a variety of different pesticide formulations and water-soluble fertilizers. While improving the stability of various pesticide formulations and fertilizer mixing, it can effectively improve the performance of the liquid medicine, increase the rainwater scouring resistance of the pesticide on the target, weaken the adverse effects of rainy weather on the pest control effect, improve the utilization rate of pesticides, ensure the efficacy, and reduce pollution to the environment. The aerial pest control synergist provided by the present invention is green, environmentally friendly, easy to degrade, and safe for crops. DETAILED DESCRIPTION

[0064] The present invention is further described below in conjunction with the examples. However, the present invention is not limited to the following examples. The implementation conditions used in the examples can be further adjusted according to the different requirements of specific use, and the implementation conditions not specified are conventional conditions in the industry. The technical features involved in each embodiment of the present invention can be combined with each other as long as they do not conflict with each other.

[0065] Unless otherwise specified, the raw materials involved in the following are all commercially available products or can be prepared by referring to the existing technology, among which oleyl alcohol polyoxyethylene ether, OV-5, was purchased from Hai'an Petrochemical Plant, Jiangsu Province;

[0066] Butanol random polyether, BPE-1000, was purchased from Haian Petrochemical Plant, Jiangsu Province;

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

[0068] Coconut fatty acid diethanolamide, 6501, was purchased from Haian Petrochemical Plant, Jiangsu Province;

[0069] Polyethylene glycol oleate, PEG600MO, was purchased from Haian Petrochemical Plant, Jiangsu Province;

[0070] Alkylbenzene sulfonate (calcium dodecylbenzene sulfonate) was purchased from Hai'an Petrochemical Plant, Jiangsu Province;

[0071] Fatty alcohol polyoxyethylene ether phosphate, AEO-3P, was purchased from Hai'an Petrochemical Plant, Jiangsu Province;

[0072] Polyethylene glycol-5 cocoyl ammonium methyl sulfate was purchased from Shanghai Evonik.

[0073] A method for preparing a pesticide spraying adjuvant for improving the stability and scour resistance of pesticide mixing, comprising the following steps:

[0074] Step 1. Weigh the raw materials according to Table 1 below and set aside for use. Mix various compatibilizers evenly and add them to the dispersion medium. Stir and heat at 45-50° C. for 2 h to obtain solution A.

[0075] Step 2: adding the synergist to solution A and mixing them evenly to obtain solution B. The synergists can be added to solution A separately or mixed together and then added to solution A.

[0076] Step 3, adding the adhesion promoter to solution B, stirring and heating at 60-65°C for 1-2h, and high-speed shearing for 5-10min after constant temperature to obtain a fly control auxiliary agent, wherein a plurality of adhesion promoters can be added to solution B separately, or mixed together and added to solution B.

[0077] Table 1

[0078]

[0079]

[0080] In the above table, "%" refers to mass percentage. For example, oleyl alcohol polyoxyethylene ether 2% in Example 1 means that the mass percentage of oleyl alcohol polyoxyethylene ether in the flying control auxiliary agent is 2%.

[0081] Performance testing:

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

[0083] A: The emulsion is dark milky or slightly blue, with a milky sheen at the bottom.

[0084] B Good: The emulsion is in an emulsified state and has no gloss.

[0085] C Acceptable: The emulsion is off-white with visible particles or oily surface.

[0086] D Poor: Almost no emulsification.

[0087] Table 2 Comparison of detection indicators of fly control additives

[0088] serial number state Emulsification effect Adhesion force (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 can be seen from Table 2, compared with Comparative Example 1 without adding adhesion promoter, the embodiment of the present invention can significantly improve the adhesion of the flying defense auxiliary agent by adding adhesion promoter to the flying defense auxiliary agent containing synergist, compatibilizer and dispersion medium, and as the amount of adhesion promoter increases, the improvement of adhesion is more obvious, but when the amount of adhesion promoter is too large, it will affect the compatibility of other components, so the adhesion promoter should not be too large, preferably accounting for 2% to 6% of the total mass of the flying defense auxiliary agent, and the best is 4%. Of course, in addition to the adhesion promoter, the components and dosage of the synergist, compatibilizer and dispersion medium will also affect the adhesion and the emulsification effect. The present invention further improves the adhesion of the flying defense auxiliary agent by optimizing the components and dosage of the synergist, compatibilizer and dispersion medium, so that the prepared flying defense auxiliary agent has better adhesion, emulsification effect and appearance.

[0090] (2) Determination of the stability of pesticide mixtures: The pesticide preparations were mixed with the aerial control adjuvants and water in the above examples and comparative examples (5 mL of aerial control adjuvant, water was added to make the total mass of the aerial control adjuvant and water 0.5 kg), and tested at room temperature (25±5° C.). The pesticide preparations used were composed of the following pesticides (a total of 0.5 kg): 25% pyraclostrobin suspension 10 g (Ningbo Sanjiangyi), 45% prochloraz emulsion in water 10 g (Guangxi Beijiaer Biological), 80% Bordeaux mixture wettable powder 5 g (American Xiannong), 70% imidacloprid water dispersible granules 10 g (Hebei Noda Agricultural Chemicals), 1.8% avermectin emulsifiable concentrate 10 g (Zhejiang Qianjiang Biological), 6% lianju·acetamiprid microemulsion 10 g (Hunan Zefeng), potassium dihydrogen phosphate 10 g (Anhui Hefeng), and medium element water-soluble fertilizer 20 g (Bayer).

[0091] The mixing order of pesticide preparations is: add in the following order: micronutrient fertilizer, water-soluble fertilizer, wettable powder, water-dispersible granules, suspension, microemulsion, emulsion in water, aqueous solution, emulsifiable concentrate. After each pesticide preparation is added, stir it thoroughly before adding the next one.

[0092] The control group was a mixture of the pesticide formulation and standard hard water. The results are shown in Table 3.

[0093] Table 3

[0094]

[0095]

[0096] As can be seen from Table 3, the aerial spraying adjuvants prepared in the embodiments of the present invention have good stability when mixed with pesticides, especially the aerial spraying adjuvant of Example 1, which did not show unstable phenomena such as liquid stratification and lower layer precipitation within 8 hours, indicating that the aerial spraying adjuvant can significantly improve the suspension of pesticide particles and control particle agglomeration and coagulation.

[0097] By comparing the examples of the present application with the comparative examples, the components and dosage of the adhesion promoter, synergist and compatibilizer have a greater impact on the stability of the mixed formulation of the aerial spraying adjuvant and the pesticide. When the components or their dosage are not appropriate, stratification, oil absorption, precipitation and the like are likely to occur.

[0098] (3) Determination of scouring performance: Indoor simulated rainwater scouring test, the method is as follows;

[0099] ① The upper surface of corn leaves with the same leaf age was selected as the research surface. Corn discs with the same area and size were cut with a round hole sampler, avoiding the leaf veins, with the upper surface of the leaf facing up, and fixed to the middle of the slide with double-sided tape. The test solutions of the above embodiment and comparative example were added to a 1% azoxystrobin solution by mass, and the mass ratio of the test solution to the 1% azoxystrobin solution was 1:50.

[0100] ② Use a microsyringe to absorb the liquid medicine and drip it in the center of the corn leaf, 1 drop (1.0μL) on each leaf. After the leaves dripped with the liquid medicine are naturally dried for 30 minutes, they are placed in a homemade indoor flushing device, and the sediment on the leaves is flushed with deionized water in a burette. Each leaf is flushed 6 times in total, with 1.0mL of water each time. A 1% azoxystrobin solution without adding fly control adjuvants was used as a control, and each treatment was repeated 3 times. The results are shown in Table 4 below.

[0101] Table 4

[0102]

[0103]

[0104] As can be seen from Table 4, the aerial pest control adjuvant prepared by the present invention can significantly increase the amount of pesticide residues on the target after water flushing, thereby effectively improving the utilization rate of pesticides, reducing the pollution of the environment caused by pesticide preparations, and is beneficial to protecting the ecological environment.

[0105] (4) Determination of protective efficacy

[0106] The effects of plant protection drones and some of the aerial control synergists of the present invention on controlling wheat aphids were tested. The test method was as follows: the drone aerial control spraying method was used for spraying. The drone was selected as DJI T50. The flight parameters for spraying were: height 1.5m, speed 5m / s, and spray liquid volume 1.5L / mu. The operating temperature was 30°C, the wind speed was 2-5m / s, and each drone treated 500m×100m (7.5 mu) without repetition; the ground application equipment was used for treatment and the blank control was 50m×10m (0.75 mu).

[0107] Sampling was done at five points in each plot, and 10 aphid plants (ears) were fixed at each point to investigate the number of aphids on the fixed plants (ears). The base number of aphids was investigated before spraying, and the number of insects was investigated once at 5d, 10d, and 15d after spraying. The calculation method is as follows:

[0108] Pest population reduction rate (%) = [(Pest population before medication - Pest population after medication) / Pest population before medication] × 100;

[0109] Control effect (%) = [1-(the number of insects in the control area before application × the number of insects in the treatment area after application) / (the number of insects in the control area after application × the number of insects in the treatment area before application)] × 100;

[0110] The agents listed in Table 5 below were mixed with aerial pest control adjuvants (10 mL / mu) and water (1.5 L / mu), and then the pest control efficacy was measured. The results are shown in Table 5 below.

[0111] Table 5

[0112]

[0113]

[0114] It can be seen from Table 5 that the aerial pest control adjuvant prepared by the present invention can effectively improve the application effect and control efficiency of the plant protection UAV.

[0115] The above detailed description of the present invention is intended to enable persons familiar with the art to understand the contents of the present invention and implement them. It does not limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A flying control auxiliary agent, characterized in that include: an adhesion promoter, wherein the adhesion promoter comprises oleyl alcohol ether and fatty alcohol random polyether; Synergists, including polyoxyethylene ether compounds, fatty acid amides and polyethylene glycol fatty acid esters; A compatibilizer, wherein the compatibilizer comprises a first compatibilizer, a second compatibilizer and a third compatibilizer, wherein the first compatibilizer is selected from one or more of alkylbenzene sulfonate, alkyl sulfonate ester, alkyl sulfonate and alkyl sulfate, the second compatibilizer is selected from one or more of fatty alcohol polyoxyethylene ether sulfate and fatty alcohol polyoxyethylene ether phosphate, and the third compatibilizer is polyethylene glycol-5 coconut oil ammonium methyl sulfate; and, The dispersion medium is selected from one or more of fatty acid esters, hydrogenated vegetable oils, and polyamide-modified hydrogenated vegetable oils.

2. The flying control auxiliary agent according to claim 1, characterized in that Taking the total mass of the flying control auxiliary agent as 100%, the mass proportions of each component are as follows: Adhesion promoter 2% to 6%; Synergist 10% to 18%; Compatibilizer 8% to 14%; Dispersion medium 62%~80%.

3. The flying control auxiliary agent according to claim 2, characterized in that Taking the total mass of the flying control auxiliary agent as 100%, the mass proportions of each component are as follows: Adhesion promoter 3% to 5%; Synergist 13% to 16%; Compatibilizer 10% to 14%; Dispersion medium 65%~74%.

4. The flying control auxiliary agent according to claim 1, characterized in that The mass ratio of the oleyl alcohol ether to the fatty alcohol random polyether is 1:(0.5-1.5); and / or, The oleyl alcohol ether is oleyl alcohol polyoxyethylene ether; and / or, The fatty alcohol random polyether is selected from one or more fatty alcohol random polyethers having 2 to 6 carbon atoms.

5. The flying control auxiliary agent according to claim 1, characterized in that 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); and / or, The polyoxyethylene ether compound is selected from one or more of castor oil polyoxyethylene ether, hydrogenated castor oil polyoxyethylene ether, and cocamide polyoxyethylene ether; and / or, The fatty acid amide is selected from one or both of coconut fatty acid diethanolamide and stearic acid diethanolamide; and / or, The polyethylene glycol fatty acid ester is selected from one or both of polyethylene glycol monooleate and polyethylene glycol dioleate.

6. The flying control auxiliary agent according to claim 1, characterized in that The mass ratio of the first compatibilizer, the second compatibilizer and the third compatibilizer is 1:(1-1.5):(0.5-2).

7. The method for preparing the flying control auxiliary agent according to any one of claims 1 to 6, characterized in that: The steps include: Step 1, mixing a compatibilizer and a dispersion medium to obtain a solution A; Step 2, mixing the synergist with the solution A to obtain solution B; Step 3: Mix the adhesion promoter with the solution B to obtain the anti-flying agent.

8. The use of the flying control auxiliary agent according to any one of claims 1 to 6, characterized in that: After the aerial pest control adjuvant is mixed with the pesticide preparation, the crop diseases are controlled by the drone.

9. The use of the flying control auxiliary agent according to claim 8, characterized in that: The feeding mass ratio of the flying control adjuvant to the pesticide preparation is (0.01-0.25):1; and / or, The pesticide preparation is one or more of soluble powder, wettable powder, water dispersible granule, suspension, microemulsion, soluble solution, emulsion in water, aqueous solution and emulsifiable concentrate.

10. A pesticide composition suitable for aerial spraying, characterized in that: The method comprises the aerial control adjuvant according to any one of claims 1 to 6, a pesticide preparation, a water-soluble fertilizer and water.

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