Preparation method of special pesticide for aerial control containing brucea javanica oil

Abstract

The application discloses a preparation method of a special pesticide for aerial spraying containing brucea javanica oil, which comprises the following components in percentage by weight: 0.2-40% of a pesticide active agent, 5-20% of a surfactant, 5-20% of a cosolvent, 0.01-1% of an antioxidant, and the rest of brucea javanica oil. Compared with the prior art, the special pesticide for aerial spraying has remarkable anti-drifting effect and obvious field efficacy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plant protection, in particular to a preparation method of a pesticide containing brucea javanica oil for aerial spraying. BACKGROUND

[0002] Aerial plant protection is a rapidly developing new thing. In 2018, China had 40,000 agricultural unmanned aerial vehicles, and the farmland area treated by agricultural unmanned aerial vehicles for pest control was more than 100 million mu, and the operation area was 260 million mu. Pesticide aerial spraying has become a general trend. However, in addition to the lack of special pesticides suitable for aerial spraying, another problem is that aerial spraying is large-area spraying, which is indiscriminate in attacking pests and natural enemies, which is contrary to the plant protection policy of agricultural comprehensive prevention. On the other hand, unlike traditional spraying methods, aerial pesticide spraying is high-concentration spraying, only 500-1,000 milliliters of water per mu of land, and the dilution ratio is only 30-50 times, so the drug concentration is high, which is easy to cause drug damage, especially in the tender parts such as leaf tips and leaf edges. Moreover, the aerial pesticide currently used in China is developed based on the artificial backpack sprayer, which does not meet the requirements of aerial pesticide use. During the aerial spraying process, flocculation, sedimentation and precipitation may occur, which reduces the drug efficacy, causes drug damage, and leads to poor field control effect.

[0003] Therefore, it is necessary to improve the existing aerial pesticide. SUMMARY

[0004] The present application aims to overcome the problems of flocculation, sedimentation and precipitation, clogging of the spray head, reduction of drug efficacy, drug damage and poor field control effect in the use of the existing aerial pesticide, and to provide an aerial pesticide containing brucea javanica oil. The physical properties of the pesticide liquid of the aerial pesticide are different from those of the existing aerial pesticide, which can inhibit the evaporation of the drug droplets after being sprayed from the sprayer, prolong the drying time of the mist droplets, reduce the formation of small mist droplets, form larger mist droplets, thereby accelerating the settling of the pesticide liquid, significantly reducing the drift effect, and significantly improving the field efficacy.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] An aerial pesticide containing brucea javanica oil, which comprises the following components by weight percentage: 0.2-40% of a pesticide active agent, 5-20% of a surfactant, 5-20% of a cosolvent, 0.01-1% of an antioxidant, and the balance of brucea javanica oil.

[0007] Brucea Javanica oil is a natural oil squeezed from the dried mature fruits of the plant of Meliaceae family. The special pesticide prepared with the oil as the carrier of pesticide liquid can change the physical properties of the liquid. By reasonably regulating the ratio of the oil and the active pesticide, the specific gravity of the pesticide droplet can be increased, the evaporation of the droplet can be inhibited, the drying time of the droplet can be prolonged, the formation of small droplets can be reduced, the settlement of the liquid can be accelerated, the distribution range of the droplet spectrum can be changed, and the performances of anti-transpiration, anti-drift, wetting, adhesion, synergism and the like can be good. The special pesticide for aerial spraying prepared by replacing the benzene solvent in the conventional emulsifiable concentrate with the plant oil based on the oil can be quickly emulsified, has good emulsifying performance, good stability after dilution with water, no blockage and no corrosion to the spraying pipeline of the airplane. On the other hand, the oil has volatile bitterness, which can make the pests refuse to eat the plants and protect the plants when used in aerial spraying.

[0008] Further, the special pesticide for aerial spraying containing the oil of Brucea Javanica according to the present application further comprises an anti-freezing agent 0.001-5% by weight, and the anti-freezing agent comprises one or more than two of glycerol, propylene glycol and urea.

[0009] Further, the active pesticide comprises one or more than two of chlorantraniliprole, emamectin benzoate, cyantraniliprole, tetrachlorantraniliprole, lambda-cyhalothrin, chlorfenapyr, methoxyfenozide, indoxacarb, hydroprene, flubendiamide, sulfoxaflor, chlorpyrifos, pymetrozine, clothianidin, flonicamid.

[0010] Further, the surfactant comprises one or more than two of silicone polyoxyethylene ether, fatty alcohol polyoxyethylene ether, fatty acid polyoxyethylene ether, castor oil ethylene oxide, castor oil ethylene oxide derivative, castor oil propylene oxide, castor oil propylene oxide derivative, alkyl phenol polyoxyethylene polyoxypropylene ether, chimeric alkyl phenol polyoxyethylene and polyoxypropylene ether, alkyl phenol polyoxyethylene formaldehyde condensate, alkyl diphenol polyoxyethylene polyoxypropylene ether, chimeric alkyl diphenol polyoxyethylene and polyoxypropylene ether, alkyl diphenol polyoxyethylene formaldehyde condensate, alkyl naphthalene polyoxyethylene polyoxypropylene ether, chimeric alkyl naphthalene polyoxyethylene and polyoxypropylene ether, alkyl naphthalene polyoxyethylene formaldehyde condensate.

[0011] Further, the co-solvent comprises one or more than two of ethylene glycol diacetate, ethylene glycol, isopropyl alcohol and methyl oleate.

[0012] Further, the antioxidant comprises one or more than two of propyl gallate, butylated hydroxyanisole, butylated hydroxytoluene and tert-butyl hydroquinone.

[0013] The present application further provides a preparation method of the special pesticide for aerial spraying containing the oil of Brucea Javanica, which comprises the following steps:

[0014] S1. Add heat transfer oil to the reactor and heat it to make the inside of the reactor dry and free of water;

[0015] S2. Add the cosolvent to the dry and anhydrous reactor, then add the pesticide activator, and stir at 1000-1500 r / min for 10-20 min.

[0016] S3. Add surfactant to the reactor and continue stirring for 10-15 minutes;

[0017] S4. Add Brucea javanica oil to the reaction vessel and continue stirring for 10-15 minutes;

[0018] S5. Add antioxidant to the reaction vessel and continue stirring for 5-10 minutes;

[0019] S6. Add antifreeze to the reactor and continue stirring for 5-10 minutes;

[0020] S7. After stirring, allow to cool naturally to room temperature.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. By rationally controlling the ratio of Brucea javanica oil and pesticide activator, the specific gravity of the pesticide droplets can be increased, droplet evaporation can be inhibited, droplet drying time can be extended, the formation of small droplets can be reduced, the sedimentation of the pesticide solution can be accelerated, and the droplet spectrum distribution range can be changed. It has good anti-transpiration, anti-drift, wetting, adhesion and synergistic properties.

[0023] 2. The aerial spraying pesticide containing croton oil developed in this invention has a synergistic effect on rice planthoppers, aphids, and diamondback moths during field trials, thereby reducing the dosage of chemical pesticides and is of great significance for pollution-free crop production.

[0024] 3. The aerial spraying pesticide containing Brucea javanica oil developed in this invention has a certain antifeedant activity against pests. Attached Figure Description

[0025] Figure 1 This is a diagram illustrating the field control efficacy of the aerial spraying pesticide containing croton oil, as described in Example 1 of this invention, against the cabbage caterpillar.

[0026] Figure 2 This is a field control effect diagram of the pesticide containing Brucea javanica oil, as described in Example 2 of the present invention, against rice leaf roller.

[0027] Figure 3 This is a field control effect diagram of the aerial spraying pesticide containing croton oil, as described in Example 13 of the present invention, against the fall armyworm.

[0028] Figure 4The field effect diagram of the field special pesticide containing brucea javanica oil on cotton aphids in the embodiment 6 of the present application. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0030] Embodiment 1

[0031] A field special pesticide containing brucea javanica oil, which adopts raw materials including the following components by weight percentage:

[0032] Pesticide active agent 5%, surfactant 13%, cosolvent 8%, antioxidant 0.2%, antifreeze 5%, and the rest is brucea javanica oil.

[0033] In the embodiment, the preparation method of the field special pesticide has the following steps:

[0034] S1, heat conducting oil is added into a reaction kettle and heated to dry the inside of the reaction kettle without water;

[0035] S2, the cosolvent is added into the dry and water-free reaction kettle, and then the pesticide active agent is added, and stirred at a speed of 1000-1500 r / min for 10-20 min;

[0036] S3, the surfactant is added into the reaction kettle and continues to stir for 10-15 min;

[0037] S4, the brucea javanica oil is added into the reaction kettle and continues to stir for 10-15 min;

[0038] S5, the antioxidant is added into the reaction kettle and continues to stir for 5-10 min;

[0039] S6, the antifreeze is added into the reaction kettle and continues to stir for 5-10 min;

[0040] S7, after the stirring is completed, it is naturally cooled to room temperature.

[0041] In the embodiment, the pesticide active agent is lambda cyhalothrin.

[0042] In the embodiment, the surfactant is fatty alcohol polyoxyethylene ether.

[0043] In the embodiment, the cosolvent is ethyl acetate.

[0044] In the embodiment, the antioxidant is propyl gallate.

[0045] In this embodiment, the anti-freezing agent is glycerol.

[0046] Example 2

[0047] A pesticide containing oil of Calophyllum inophyllum for aerial spraying, which employs raw materials including the following components by weight percentage:

[0048] Pesticide active agent 20%, surfactant 10%, cosolvent 5%, antioxidant 0.2%, anti-freezing agent 4%, and the rest is oil of Calophyllum inophyllum.

[0049] In this embodiment, the active substance is chlorantraniliprole.

[0050] In this embodiment, the surfactant is hydrogenated castor oil and ethylene oxide condensate.

[0051] In this embodiment, the cosolvent is ethylene glycol diacetate.

[0052] In this embodiment, the antioxidant is butylated hydroxyanisole.

[0053] In this embodiment, the anti-freezing agent is propylene glycol.

[0054] The preparation method of the pesticide containing oil of Calophyllum inophyllum for aerial spraying in this embodiment refers to Example 1.

[0055] Example 3

[0056] A pesticide containing oil of Calophyllum inophyllum for aerial spraying, which employs raw materials including the following components by weight percentage:

[0057] Pesticide active agent 36%, surfactant 15%, cosolvent 10%, antioxidant 0.1%, anti-freezing agent 4%, and the rest is oil of Calophyllum inophyllum.

[0058] In this embodiment, the active substance is chlorantraniliprole.

[0059] In this embodiment, the surfactant is alkyl phenol polyoxyethylene and polyoxypropylene ether chimera.

[0060] In this embodiment, the cosolvent is ethylene glycol diacetate.

[0061] In this embodiment, the antioxidant is butylated hydroxyanisole.

[0062] In this embodiment, the anti-freezing agent is urea.

[0063] The preparation method of the pesticide containing oil of Calophyllum inophyllum for aerial spraying in this embodiment refers to Example 1.

[0064] Example 4

[0065] A pesticide containing brucea javanica oil for aerial spraying, which uses raw materials including the following components by weight percentage:

[0066] Pesticide active agent 24%, surfactant 15%, cosolvent 13%, antioxidant 0.1%, antifreezing agent 5%, and the rest is brucea javanica oil.

[0067] In this embodiment, the active substance is methoxyfenozide.

[0068] In this embodiment, the surfactant is organic silicon polyoxyethylene ether succinic acid monoester disodium salt.

[0069] In this embodiment, the cosolvent is methyl oleate.

[0070] In this embodiment, the antioxidant is dibutyl hydroxytoluene.

[0071] In this embodiment, the antifreezing agent is propylene glycol.

[0072] The preparation method of the pesticide containing brucea javanica oil for aerial spraying in this embodiment refers to that in Embodiment 1.

[0073] Embodiment 5

[0074] A pesticide containing brucea javanica oil for aerial spraying, which uses raw materials including the following components by weight percentage:

[0075] Pesticide active agent 12%, surfactant 15%, cosolvent 12%, antioxidant 0.05%, antifreezing agent 4%, and the rest is brucea javanica oil.

[0076] In this embodiment, the active substance is emamectin benzoate·indoxacarb, emamectin benzoate is 2%, and indoxacarb is 10%.

[0077] In this embodiment, the surfactant is fatty alcohol polyoxyethylene ether sodium sulfate.

[0078] In this embodiment, the cosolvent is ethanol.

[0079] In this embodiment, the antioxidant is tertiary butyl hydroquinone.

[0080] In this embodiment, the antifreezing agent is glycerol.

[0081] The preparation method of the pesticide containing brucea javanica oil for aerial spraying in this embodiment refers to that in Embodiment 1.

[0082] Embodiment 6

[0083] A pesticide specifically for aerial application containing croton oil, the raw materials used in this pesticide include the following components by weight percentage:

[0084] The composition includes 15% pesticide active agent, 18% surfactant, 15% solubilizer, 0.08% antioxidant, 5% antifreeze, and the remainder is Brucea javanica oil.

[0085] In this embodiment, the active substance is flupyradifurone.

[0086] In this embodiment, the surfactant is a mixture of lauryl diethanolamine and sodium fatty alcohol polyoxyethylene ether sulfate in a mass ratio of 1:1.

[0087] In this embodiment, the co-solvent is ethanol.

[0088] In this embodiment, the antioxidant is propyl gallate.

[0089] In this embodiment, the antifreeze agent is propylene glycol.

[0090] The preparation method of the aerial spraying pesticide containing Brucea javanica oil described in this embodiment is the same as in Example 1.

[0091] Example 7

[0092] A pesticide specifically for aerial application containing croton oil, the raw materials used in this pesticide include the following components by weight percentage:

[0093] The composition includes 10% pesticide active agent, 11% surfactant, 9% solubilizer, 0.1% antioxidant, 4% antifreeze, and the remainder is Brucea javanica oil.

[0094] In this embodiment, the active substance is lufenuron.

[0095] In this embodiment, the surfactant is sodium fatty alcohol polyoxyethylene ether sulfate.

[0096] In this embodiment, the co-solvent is a mixture of methyl oleate and ethanol in a mass ratio of 3:1.

[0097] In this embodiment, the antioxidant is propyl gallate.

[0098] In this embodiment, the antifreeze agent is propylene glycol.

[0099] The preparation method of the aerial spraying pesticide containing Brucea javanica oil described in this embodiment is the same as in Example 1.

[0100] Example 8

[0101] A pesticide specifically for aerial application, the raw materials used in it comprising the following components by weight percentage:

[0102] Pesticide active agent 22%, surfactant 20%, cosolvent 19%, antioxidant 0.1%, antifreezing agent 3%, and the balance is the oil of Calophyllum inophyllum.

[0103] In this embodiment, the active substance is sulfoxaflor.

[0104] In this embodiment, the surfactant is a mixture of sodium fatty alcohol polyoxyethylene ether sulfate and castor oil ethylene oxide in a mass ratio of 1:2.

[0105] In this embodiment, the cosolvent is methyl oleate.

[0106] In this embodiment, the antioxidant is a mixture of propyl gallate and butylated hydroxyanisole in a mass ratio of 1:1.

[0107] In this embodiment, the antifreezing agent is propylene glycol.

[0108] The preparation method of the pesticide for aerial spraying containing the oil of Calophyllum inophyllum in this embodiment refers to that in Embodiment 1.

[0109] Embodiment 9

[0110] A pesticide for aerial spraying containing the oil of Calophyllum inophyllum, which adopts raw materials including the following components by weight percentage:

[0111] Pesticide active agent 10%, surfactant 16%, cosolvent 12%, antioxidant 0.3%, and the balance is the oil of Calophyllum inophyllum.

[0112] In this embodiment, the active substance is cyantraniliprole.

[0113] In this embodiment, the surfactant is a mixture of sodium fatty alcohol polyoxyethylene ether sulfate and castor oil ethylene oxide in a mass ratio of 1:2.

[0114] In this embodiment, the cosolvent is a mixture of ethylene glycol diacetate and ethylene glycol in a mass ratio of 4:1.

[0115] In this embodiment, the antioxidant is butylated hydroxyanisole.

[0116] The preparation method of the pesticide for aerial spraying containing the oil of Calophyllum inophyllum in this embodiment refers to that in Embodiment 1.

[0117] Embodiment 10

[0118] A pesticide for aerial spraying containing the oil of Calophyllum inophyllum, which adopts raw materials including the following components by weight percentage:

[0119] Pesticide active agent 0.2%, surfactant 5%, cosolvent 2%, antioxidant 0.5%, and the balance is the oil of Calophyllum inophyllum.

[0120] In this embodiment, the active substance is emamectin benzoate.

[0121] In this embodiment, the surfactant is silicone polyoxyethylene ether.

[0122] In this embodiment, the cosolvent is ethylene glycol.

[0123] In this embodiment, the antioxidant is butylated hydroxyanisole.

[0124] The preparation method of the pesticide containing Calamus oil for aerial spraying in this embodiment refers to that in Embodiment 1.

[0125] Embodiment 11

[0126] A pesticide containing Calamus oil for aerial spraying, which adopts raw materials including the following components by weight percentage:

[0127] Pesticide active agent 40%, surfactant 20%, cosolvent 16%, antioxidant 1%, antifreeze 4%, and the rest is Calamus oil.

[0128] In this embodiment, the active substance is a mixture of emamectin benzoate and chlorpyrifos at a mass ratio of 1:39.

[0129] In this embodiment, the surfactant is a mixture of alkylphenol polyoxyethylene polyoxypropylene ether, fatty alcohol polyoxyethylene ether, and castor oil propylene oxide at a mass ratio of 1:2:1.

[0130] In this embodiment, the cosolvent is a mixture of isopropyl alcohol and methyl oleate at a mass ratio of 3:1.

[0131] In this embodiment, the antioxidant is butylated hydroxyanisole.

[0132] In this embodiment, the antifreeze is urea.

[0133] The preparation method of the pesticide containing Calamus oil for aerial spraying in this embodiment refers to that in Embodiment 1.

[0134] Embodiment 12

[0135] A pesticide containing Calamus oil for aerial spraying, which adopts raw materials including the following components by weight percentage:

[0136] Pesticide active agent 30%, surfactant 20%, cosolvent 20%, antioxidant 0.01%, antifreeze 5%, and the rest is Calamus oil.

[0137] In this embodiment, the active substance is a mixture of pymetrozine and clothianidin at a mass ratio of 5:1.

[0138] In this embodiment, the surfactant is a mixture of alkylphenol polyoxyethylene polyoxypropylene ether, castor oil ethylene oxide, and organosilicon polyoxyethylene ether in a mass ratio of 1:1:1.

[0139] In this embodiment, the cosolvent is ethylene glycol diacetate.

[0140] In this embodiment, the antioxidant is butylated hydroxyanisole.

[0141] In this embodiment, the antifreeze agent is propylene glycol.

[0142] The preparation method of the aerial spraying pesticide containing Brucea javanica oil described in this embodiment is the same as in Example 1.

[0143] Example 13

[0144] A pesticide specifically for aerial application containing croton oil, the raw materials used in this pesticide include the following components by weight percentage:

[0145] The pesticide active agent is 10%, the surfactant is 7%, the solubilizer is 8%, the antioxidant is 0.8%, the antifreeze is 2%, and the balance is Brucea javanica oil.

[0146] In this embodiment, the active substance is tetrachlorantraniliprole.

[0147] In this embodiment, the surfactant is alkylphenol polyoxyethylene polyoxypropylene ether.

[0148] In this embodiment, the cosolvent is ethylene glycol diacetate.

[0149] In this embodiment, the antioxidant is propyl gallate.

[0150] In this embodiment, the antifreeze agent is propylene glycol.

[0151] The preparation method of the aerial spraying pesticide containing Brucea javanica oil described in this embodiment is the same as in Example 1.

[0152] Example 14

[0153] A pesticide specifically for aerial application containing croton oil, the raw materials used in this pesticide include the following components by weight percentage:

[0154] The pesticide contains 20% pesticide active agent, 7% surfactant, 8% solubilizer, 0.8% antioxidant, 2% antifreeze, and the remainder is Brucea javanica oil.

[0155] In this embodiment, the active substance is flubendiamide.

[0156] In this embodiment, the surfactant is alkyl diphenyl polyoxyethylene and polyoxypropylene ether chimera.

[0157] In this embodiment, the co-solvent is methyl oleate.

[0158] In this embodiment, the antioxidant is propyl gallate.

[0159] In this embodiment, the anti-freezing agent is urea.

[0160] The preparation method of the pesticide for aerial spraying containing the calophyllum inophyllum oil in this embodiment refers to Example 1.

[0161] Surface tension determination of the pesticide for aerial spraying containing the calophyllum inophyllum oil in Examples 1-14

[0162] The surface tension of the 100 times diluted pesticide solution of each example is determined by using a surface / interface tension meter. As shown in the table, the surface tension of the 100 times diluted pesticide solution of some examples is below 30 mN / m, which is lower than the critical surface tension of the leaf surface of rice, corn and other crops. The results are shown in Table 1.

[0163] Table 1 Surface tension value of the 100 times water solution of the pesticide solution of Examples 1-14

[0164] Treatment 100-fold liquid surface tension (mN / m) Example 1 17.659 Example 2 21.542 Example 3 32.380 Example 4 13.112 Example 5 27.749 Example 6 23.309 Example 7 22.887 Example 8 27.749 Example 9 39.492 Example 10 57.624 Example 11 43.443 Example 12 35.186 Example 13 36.522 Example 14 40.936

[0165] Evaluation of the anti-drift ability of the pesticide for aerial spraying containing the calophyllum inophyllum oil in Examples 1-14

[0166] The DJI MG-1 plant protection unmanned aerial vehicle is used as a spraying instrument, and the plant protection special pesticides prepared in Examples 1-14 and water are mixed at a ratio of 1:100 to prepare a spraying liquid for spraying, the water consumption per mu is 1 L / mu, the flight height is 2 m from the ground, the flight speed is 3 m / s, the spraying is carried out under the condition of a breeze with a wind speed of 1.5-3.8 m / s, the flight direction is perpendicular to the direction of the wind, and the downwind direction of the flight line of the aircraft is collected. In order to collect the distribution characteristics of the drift droplets of the plant protection unmanned aerial vehicle in the downwind direction, 10 plastic culture dishes with a diameter of 15 cm are placed on a 40 cm x 60 cm metal plate, and the culture dishes are divided into 3 groups, 3, 4, and 3, respectively, and the ground drift is collected. In order to collect the distribution characteristics of the drift droplets of the plant protection unmanned aerial vehicle in the downwind direction, an equal momentum droplet collector is arranged at a distance of 1.5 m from the ground, the rotating speed is 800±20 r / min, and the collection device is 2 symmetrically placed Φ=3 mm, L=70 mm nylon test tube brushes. As can be seen from Table 2, the plant protection special pesticide prepared using brucea javanica oil has good anti-drift ability, the drift rate in the ground 0-10 m is 0.6%-15.7%, the drift rate in the 10-20 m is 0.0%-4.9%, the 10 m air drift rate is 0.0%-10.2%, and the 20 m air drift rate is 0.1%-3.5%. It is shown that the anti-drift efficiency of the plant protection special pesticide of Examples 1-14 is good, and the results are shown in Table 2.

[0167] Table 2 Anti-drift ability of the liquid of Examples 1-14

[0168]

[0169]

[0170] Evaluation of the settling ability of the plant protection special pesticide containing brucea javanica oil of Examples 1-14

[0171] The DJI MG-1 plant protection unmanned aerial vehicle is used as a spraying instrument, and the plant protection special pesticides prepared in Examples 1-14 and water are mixed at a ratio of 1:100 to prepare a spraying liquid for spraying, the water consumption per mu is 1 L / mu, the flight height is 2 m from the ground, the flight speed is 3 m / s, the spraying is carried out under the condition of a breeze with a wind speed of 1.5-3.8 m / s, the flight direction is perpendicular to the direction of the wind, and the downwind direction of the flight line of the aircraft is collected. In order to collect the distribution characteristics of the drift droplets of the plant protection unmanned aerial vehicle in the downwind direction, 10 plastic culture dishes with a diameter of 15 cm are placed on a 40 cm x 60 cm metal plate, and the culture dishes are divided into 3 groups, 3, 4, and 3, respectively, and the ground drift is collected. In order to collect the distribution characteristics of the drift droplets of the plant protection unmanned aerial vehicle in the downwind direction, an equal momentum droplet collector is arranged at a distance of 1.5 m from the ground, the rotating speed is 800±20 r / min, and the collection device is 2 symmetrically placed Φ=3 mm, L=70 mm nylon test tube brushes. As can be seen from Table 2, the plant protection special pesticide prepared using brucea javanica oil has good anti-drift ability, the drift rate in the ground 0-10 m is 0.6%-15.7%, the drift rate in the 10-20 m is 0.0%-4.9%, the 10 m air drift rate is 0.0%-10.2%, and the 20 m air drift rate is 0.1%-3.5%. It is shown that the anti-drift efficiency of the plant protection special pesticide of Examples 1-14 is good, and the results are shown in Table 2.

[0172] Table 3 Settling ability of the liquid of Examples

[0173]

[0174] From the results, it can be seen that the total deposition capacity of the brucea javanica oil formulated pesticide on the rice plants is obviously better than that of other pesticides, and the number of droplets deposited in the lower part of the plants is also more than that of other pesticides.

[0175] Safety of the brucea javanica oil-containing pesticide for plants at different time periods and different application amounts

[0176] Table 4 Safety of the example pesticide solution for plants

[0177]

[0178]

[0179] Note: + phytotoxicity; - no phytotoxicity

[0180] From the results in the table, it can be seen that, at any time period of application, the two water amounts have no phytotoxicity on the rice plants.

[0181] Field efficacy test of the brucea javanica oil-containing pesticide for plants at different time periods and different application amounts

[0182] (I) Investigation time and method of cabbage caterpillar: 1, 3 and 7 days after application, each investigation was carried out once, investigation was carried out by five-point sampling method, 5 cabbage plants were fixedly investigated in each point, 25 plants were investigated in each plot, the number of live insects was recorded, and the reduction rate and corrected control effect were calculated.

[0183] The relative control effect was calculated by comparing with the blank control area. The following formula was used for calculation:

[0184]

[0185]

[0186] The dosage of example 1 and the control pesticide (5% high-efficiency lambda-cyhalothrin emulsifiable concentrate) was 12 mL / acre, the water amount was 1 L / acre, the flight height was 1.8 meters, and the flight speed was 3 m / s. From the results, it can be seen that the control effect of example 1 on cabbage caterpillar is better than that of the control pesticide at 1, 3 and 7 days, especially at the 3rd day and the 7th day.

[0187] (II) Investigation time and method of rice leaf roller: 3d, 7d and 15d after application, each investigation was carried out once. 25 points were investigated in each treatment area, 10 clusters were investigated in each point, 13 plants were investigated in each cluster, 3 leaves were investigated in each rice plant, the total leaf number and the number of rolled leaves were investigated, and the rolled leaf rate and the control effect were calculated. The calculation formula is as follows:

[0188]

[0189]

[0190] Example 2 (20% chlorantraniliprole, a flying special pesticide containing a calophyllum inophyllum oil) and the control agent (200 g / L chlorantraniliprole suspension concentrate) were used against Cnaphalocrocis medinalis at a dosage of 8 mL / acre, with a water amount of 1 L / acre, a flying height of 1.8 meters, and a flying speed of 3 m / s. The results are shown in Table 2. Figure 2 As is apparent from the results, the preventive effect of Example 2 against Cnaphalocrocis medinalis was not significantly different from that of the control agent on the 3rd day, but was better than that of the control agent on the 7th and 15th days.

[0191] (Three) Spodoptera exigua Investigation time and method: Before application, 1 day, 3 days, and 7 days after application, 5 points were taken in a Z shape in each plot, 10 plants were marked on each point, a total of 50 corn plants were investigated, the number of live insects on the corn plants was recorded, and phytotoxicity was observed.

[0192] The relative preventive effect was calculated by comparing with the blank control area. The following formula was used for calculation:

[0193]

[0194]

[0195] Example 13 (10% tetrachlorantraniliprole, a flying special pesticide containing a calophyllum inophyllum oil) and the control agent (10% tetrachlorantraniliprole suspension concentrate) were used against Spodoptera exigua at a dosage of 45 mL / acre, with a water amount of 1 L / acre, a flying height of 2 meters, and a flying speed of 3 m / s. The results are shown in Table 13. Figure 3 As is apparent from the results, the preventive effect of Example 13 against Spodoptera exigua was better than that of the control agent on the 1st, 3rd, and 7th days, especially on the 3rd and 7th days.

[0196] (Four) Aphid efficacy test Investigation time and method: According to the test design, 2 rows in the middle of each plot were selected for sampling, 5 points were taken in each row, 2 plants were fixed on each point, and 3 aphid leaves on the upper part of each plant were investigated. The number of live insects was investigated before application and 1 day, 3 days, and 10 days after application. Data processing method.

[0197]

[0198]

[0199] Example 6 (25 mL / acre) and the control agent (10% flonicamid water dispersible granules) were used against cotton aphids at a dosage of 40 g / acre, with a water amount of 1 L / acre, a flying height of 1.8 meters, and a flying speed of 3 m / s. As is apparent from the results, the persistence of Example 6 was better than that of the control agent, the preventive effect was equivalent to that of the control agent on the 10th day after application, and there was a significant difference in the preventive effect compared with the control agent on the 1st and 3rd days after application. The results are shown in Table 6. Figure 4

[0200] ​The above describes the preferred embodiment of the present application, but the present application should not be limited to the embodiment and the disclosure of the drawings, so that equivalent or modified, without departing from the disclosed spirit of the present application, fall within the scope of the present application.

Claims

1. A method for preparing a pesticide specifically for aerial application containing Brucea javanica oil, characterized in that, The raw materials used include the following components by weight percentage: 5% high-efficiency cyhalothrin, 13% fatty alcohol polyoxyethylene ether, 8% ethyl acetate, 0.2% propyl gallate, 5% glycerol, and the balance being Brucea javanica oil; The preparation method of the aerial spraying pesticide containing Brucea javanica oil is as follows: S1. Add heat transfer oil to the reactor and heat it to make the inside of the reactor dry and free of water; S2. Add ethyl acetate to a dry, anhydrous reactor, then add lambda-cyhalothrin, and stir at 1000-1500 r / min for 10-20 min. S3. Add fatty alcohol polyoxyethylene ether to the reaction vessel and continue stirring for 10-15 minutes; S4. Add Brucea javanica oil to the reaction vessel and continue stirring for 10-15 minutes; S5. Add propyl gallate to the reaction vessel and continue stirring for 5-10 minutes; S6. Add glycerol to the reaction vessel and continue stirring for 5-10 minutes; S7. After stirring, allow to cool naturally to room temperature.

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