WO2021249429A1 - Véhicule aérien sans pilote ayant une tête de pulvérisation à application goutte-à-goutte et procédé d'application de pesticides à l'aide d'un véhicule aérien sans pilote - Google Patents

Véhicule aérien sans pilote ayant une tête de pulvérisation à application goutte-à-goutte et procédé d'application de pesticides à l'aide d'un véhicule aérien sans pilote Download PDF

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WO2021249429A1
WO2021249429A1 PCT/CN2021/099123 CN2021099123W WO2021249429A1 WO 2021249429 A1 WO2021249429 A1 WO 2021249429A1 CN 2021099123 W CN2021099123 W CN 2021099123W WO 2021249429 A1 WO2021249429 A1 WO 2021249429A1
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microns
unmanned aircraft
preferably greater
spray head
pesticides
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PCT/CN2021/099123
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English (en)
Chinese (zh)
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齐枫
郑伟
朱军
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拜耳作物科学(中国)有限公司
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Priority to CN202180040090.5A priority Critical patent/CN115697844A/zh
Publication of WO2021249429A1 publication Critical patent/WO2021249429A1/fr

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D1/00—Dropping, ejecting, releasing, or receiving articles, liquids, or the like, in flight
    • B64D1/16—Dropping or releasing powdered, liquid, or gaseous matter, e.g. for fire-fighting
    • B64D1/18—Dropping or releasing powdered, liquid, or gaseous matter, e.g. for fire-fighting by spraying, e.g. insecticides

Definitions

  • the present disclosure relates to an unmanned aircraft with drip spray nozzles, and the present disclosure also relates to a method for applying pesticides using the unmanned aircraft.
  • the plant protection unmanned aircraft flies on a prescribed path and sprays through the nozzles.
  • precise spraying and quantitative spraying can be achieved, but in the actual operation process, due to the nozzle model, droplet size, geographical location, geographical environment, wind speed, temperature and other factors
  • the sprays (pesticides) will drift or be unevenly distributed, which will have a negative impact on the spraying operation, causing problems such as respray and missed spraying, and even the sprays will drift to undesired areas, causing environmental pollution risks or affecting crops.
  • the growth of the plant has an adverse effect.
  • the present invention proposes an unmanned aircraft with drip spray nozzles and a method for applying pesticides using this unmanned aircraft.
  • the above-mentioned problems are solved by adopting the following technical features, and Bring other technical effects.
  • At least one embodiment of the present invention provides a method for applying pesticides to crop plants in a paddy field through an unmanned aircraft, the method comprising: providing an unmanned aircraft, the unmanned aircraft is provided with at least one spray head; The unmanned aircraft flies over the paddy field along a predetermined route; and applies pesticides via at least one spray head during flying over the paddy field; wherein, the pesticide application via at least one spray head includes liquid column via the at least one spray head The form sprays pesticides in at least one spray direction.
  • the applying the pesticide via at least one spray head further includes dispersing and atomizing the liquid column into mist droplets.
  • the dispersing and atomizing the liquid column into mist droplets includes using a down-pressure wind field generated by the rotor of the drone to disperse and atomize the liquid column into mist droplets.
  • the particle size of the droplets is greater than 100 microns, preferably greater than 200 microns, preferably greater than 400 microns, preferably greater than 600 microns, preferably greater than 800 microns, preferably greater than 1000 microns.
  • the particle size of the droplets satisfies the following conditions: DV10 and DV50 are both greater than 100 microns, preferably greater than 200 microns, preferably greater than 400 microns, preferably greater than 600 microns, preferably greater than 800 microns, at a working pressure of 3 bar, It is preferably greater than 1000 microns.
  • the method further includes calibrating the spray head, and calibrating the spray head includes calibrating at least one of the orientation of the spray head, the working flow rate of the spray head, or the size of the discharge hole of the spray head.
  • the parameters of the predetermined route are obtained through user input or experimental methods.
  • the pesticide is a pesticide suitable for water layer application.
  • the pesticide includes any one or a combination of the following groups: fluoxsulam, penoxsulam, mesotrione, pyrazosulfuron, bicyclosulfuron, chlorofluoro Pyridyl ester, pretilachlor, butachlor, bensulfuron-methyl, pyrazosulfuron-methyl, oxadiazon, oxadiazone, oxyfluorfen, sidiazin, promethacin, difentrazone or Oxazinon.
  • At least one embodiment of the present invention provides an unmanned aircraft for applying pesticides to crop plants in a paddy field.
  • the unmanned aircraft includes: a body; a box fixedly arranged on the body and used for accommodating pesticides; at least A spray head arranged on the body to spray pesticides; a conveying component for conveying pesticides from the box body toward the at least one spray head; and a control unit configured to manipulate or set the drone along Fly over the paddy field along a predetermined route, and when the unmanned aircraft flies over the paddy field, control the conveying component to apply pesticides to the paddy field via the at least one spray head; wherein the control unit is It is configured to spray pesticides toward at least one spray direction in the form of a liquid column via the at least one spray head.
  • the unmanned aircraft includes a push-up unit that generates a down-pressure wind field that drives the unmanned aircraft, and the down-pressure wind field disperses the liquid column into mist. drop.
  • the particle size of the droplets is greater than 100 microns, preferably greater than 200 microns, preferably greater than 400 microns, preferably greater than 600 microns, preferably greater than 800 microns, preferably greater than 1000 microns.
  • the particle size of the droplets satisfies the following conditions: DV10 and DV50 are both greater than 100 microns, preferably greater than 200 microns, preferably greater than 400 microns, preferably greater than 600 microns, preferably greater than 800 microns, at a working pressure of 3 bar, It is preferably greater than 1000 microns.
  • the spray head is a drip spray head.
  • the unmanned aircraft is a multi-rotor plant protection unmanned aircraft.
  • the pesticide is a pesticide suitable for water layer application.
  • the pesticide includes any one or a combination of the following groups: fluoxsulam, penoxsulam, mesotrione, pyrazosulfuron, bicyclosulfuron, chlorofluoro Pyridyl ester, pretilachlor, butachlor, bensulfuron-methyl, pyrazosulfuron-methyl, oxadiazon, oxadiazone, oxyfluorfen, sidiazin, promethacin, difentrazone or Oxazinon.
  • FIG. 1 shows a flowchart of a method for applying pesticides to crop plants in a paddy field through an unmanned aircraft according to an embodiment of the present disclosure
  • Fig. 2A shows a schematic diagram of a spray head spraying a liquid column in situ according to an embodiment of the present disclosure
  • FIG. 2B shows a schematic diagram of the nozzle of the embodiment of the present disclosure spraying a liquid column in the flight of an unmanned aircraft;
  • Figure 3 shows the comparison of the drift distances of different droplet sizes
  • Figure 4 shows the comparison of the droplet size of nozzles according to different models
  • Figure 5 shows a perspective view of an unmanned aircraft according to an embodiment of the present disclosure
  • FIG. 6 shows a schematic diagram of the operation of an unmanned aircraft according to an embodiment of the present disclosure
  • Figure 7 shows a spray head according to an embodiment of the present disclosure
  • Fig. 8 shows a spraying schematic diagram of the spray head shown in Fig. 7;
  • Figure 9 is a graph showing the results of a control experiment of pesticide application on a paddy field with soybeans planted in the surrounding area;
  • Figure 10 is a graph showing the results of a control experiment of pesticide application on a paddy field with sesame seeds in the surrounding area;
  • FIG. 11 shows a result diagram of another field control experiment according to an embodiment of the present disclosure.
  • Figure 12 shows a schematic diagram of the wind tunnel system used in laboratory test two.
  • the unmanned aircraft proposed in the present disclosure is preferably used for agricultural and forestry crop plant protection operations, more specifically for paddy field crop plant protection operations, but is not limited to other uses.
  • Unmanned Aerial Vehicle should be understood as an unmanned aerial vehicle operated by radio remote control equipment and self-provided program control devices. Unmanned aerial vehicles can also be called unmanned aerial vehicles or unmanned aerial vehicles. , Autonomous aircraft, etc.
  • the unmanned aircraft described in the present disclosure is a multi-rotor unmanned aircraft, but the present invention is not limited to this. Instead, various other types of unmanned aircraft or remote-controlled kites can be used, as long as the equipment can be It is sufficient to fly on the determined route to perform the method proposed according to the present invention.
  • paddy field should be understood as a field that can be irrigated and stored normally and used to grow aquatic crop plants (such as rice). Paddy fields can be evenly distributed on the land, or they can be unevenly distributed on the land. A single variety of crop plants can be grown in a paddy field; however, it is also conceivable that the paddy field can include multiple different areas where different varieties of crop plants or various varieties of single varieties of crop plants are grown respectively.
  • crop plant should be understood to mean a plant that grows in a targeted manner as a crop or ornamental plant due to human intervention.
  • Pesticide is understood as a product whose purpose is to protect plants or plant products from harmful organisms or prevent their effects, destroy undesired plants or plant parts, inhibit undesired plant growth or prevent such growth , And/or affect the life process of plants in a way other than nutrients (such as growth regulators).
  • Pesticides are herbicides, fungicides, insecticides and/or growth regulators.
  • Pesticides usually contain active substances or multiple active substances.
  • Active substance refers to a substance that has a specific effect on an organism and causes a specific reaction.
  • pesticides contain a carrier for diluting one or more active substances, such as water.
  • additives such as preservatives, buffers, colorants, etc. are conceivable.
  • Pesticides can be in solid, liquid or gaseous form. In the following description of the present disclosure, pesticides are considered to be used in liquid form.
  • weeds is understood to mean plants with accompanying vegetation that spontaneously occur in a field of crop plants, on the grass or in the garden, which plants are not grown deliberately in these settings and are, for example, produced by possible soil seeds or air Spread development.
  • the term is not limited to herbs in the strict sense, but also includes grasses, ferns, mosses, or woody plants.
  • the weeds used for the purposes of the present disclosure are plants that accompany the desired crop plants as they grow. Since they compete with crop plants for resources, they are undesirable and should inhibit the growth of weeds. For example, it is conceivable that weeds in the paddy field must be removed before the seeds of crop plants are planted. It is also conceivable that after sowing, weeds have developed in the paddy field and must be removed.
  • drift should be understood as the horizontal displacement of a solid or liquid when it is sprayed in the air. There are many factors that determine the size of the drift of a solid or liquid, including but not limited to: the particle size of the object, the initial horizontal velocity, the ambient wind speed, and the height of the spray.
  • the main herbicide products for paddy field crops are mostly contact-killing, requiring the medicinal solution to contact the weed leaves, while the unmanned aircraft has a small drug-carrying capacity, so the need for more small droplets has been achieved in the low water volume.
  • the water layer application method applies the pesticide evenly to the surface of the water layer of the paddy field instead of the weed leaves.
  • it can be divided into manual throwing method and medicine soil method:
  • the mother liquor is diluted with 2-7 liters of water and then evenly thrown onto the surface of the paddy field water layer;
  • Medicinal soil method first mix the mother liquor with a small amount of sand, then mix it with 3-7 kg of sand and evenly spread it on the surface of the water layer of the paddy field.
  • the operating height of unmanned aircraft is usually 1.5 to 2.5 meters above the crop plants. Therefore, the risk of drift due to environmental wind speed is much greater than that of ground spray machinery or manual spray.
  • Fig. 1 shows a flowchart of a method for applying pesticides to crop plants in a paddy field through an unmanned aircraft according to an embodiment of the present disclosure.
  • Applying the pesticide via the at least one spray head includes spraying the pesticide in the form of a liquid column via the at least one spray head toward at least one spray direction.
  • applying the pesticide via at least one spray head further includes dispersing and atomizing the liquid column into mist droplets.
  • the down-pressure wind field formed by the rotor of the unmanned aircraft can be used to disperse the liquid column into large particle droplets, the particle size of which is greater than 100 microns, preferably greater than 200 microns, preferably greater than 400 microns, It is preferably greater than 600 microns, preferably greater than 800 microns, preferably greater than 1000 microns.
  • a device for generating a down-pressure wind field can be installed on the unmanned aircraft to break up the liquid column into large particles. The effect of fog drops.
  • the unmanned aircraft adopts a multi-rotor unmanned aircraft for plant protection operations, which is also called a multi-rotor plant protection unmanned aircraft, and the nozzle adopts a drip sprayer for liquid fertilizer.
  • a multi-rotor unmanned aircraft for plant protection operations which is also called a multi-rotor plant protection unmanned aircraft
  • the nozzle adopts a drip sprayer for liquid fertilizer.
  • the following description will take the DJI plant protection unmanned aircraft MG-1P series as an example. This disclosure is not limited to this.
  • Other unmanned aircraft equipped with hydraulic spray nozzles can also be used, such as Anyang Quanfeng Electric Multi-rotor Plant Protection. People airplane waiting.
  • the nozzles used in the embodiments of the present disclosure can spray pesticides in the form of liquid columns instead of small-particle droplets.
  • the columns are broken up into large-size droplets. These liquid columns or large-size droplets can effectively avoid the problem of drift and achieve the effect of directional spraying.
  • Fig. 2A shows a schematic diagram of the nozzle of the embodiment of the present disclosure spraying a liquid column in situ
  • Fig. 2B shows a schematic diagram of the nozzle of the embodiment of the present disclosure spraying a liquid column during the flight of an unmanned aircraft.
  • At least one spray nozzle sprays pesticides in the form of a liquid column toward at least one spraying direction.
  • the rotor of the drone rotates to form a downward pressure wind field.
  • the liquid column ejected from the nozzle is broken up into large particle-like droplets.
  • Figure 3 shows a comparison of the drift distances of different droplet sizes
  • Figure 4 shows a comparison of the droplet sizes of different nozzles.
  • the droplet drift distance is inversely related to the particle size, that is, the smaller the droplet size, the smaller the droplet size.
  • the drift distance can be as far as 330 meters; when the droplet size is 50 microns, the drift distance is the farthest 50 meters; when the droplet size is 100 microns, the drift distance is When the farthest distance is 15 meters and the droplet size is 150 microns, the farthest drift distance is 7 meters.
  • the droplet size is 400 microns, the drift distance is only 2.5 meters.
  • the droplet size is selected to be at least greater than 100 micrometers.
  • the droplet particle size can be greater than 200 microns, greater than 400 microns, greater than 600 microns, greater than 800 microns, or greater than 1000 microns.
  • the droplet particle size needs to meet the following conditions: DV10 and DV50 are both greater than 100 microns, preferably greater than 200 microns, preferably greater than 400 microns, preferably greater than 600 microns, preferably greater than 800 microns, preferably greater than 1000 under a working pressure of 3 bar Micrometers.
  • the comparison chart in Figure 4 shows the droplet size of different types of nozzles at a pressure of 3 bar.
  • both DV10 and DV50 are expressions of granularity standards.
  • the volume of all droplets is accumulated in order from small to large.
  • the corresponding droplet diameter is the volume median diameter, referred to as the volume median diameter, or DV50.
  • the volume of all the droplets is accumulated in order from small to large.
  • the corresponding droplet diameter is DV10.
  • the DV10 of the standard nozzle of the unmanned aircraft is less than 100 microns under the experimental conditions, which means that there is a certain proportion of small droplets in the droplets emitted by the nozzle, which will cause a greater risk of drift.
  • their DV10 and DV50 cannot be larger than 400 microns at the same time. Therefore, these nozzles may also have a certain risk of drift.
  • the present invention adopts the SJ7-015-VP nozzle of Tejet Company, whose DV50 under the experimental conditions is greater than 1500 microns, which can significantly avoid droplet drift.
  • the present disclosure is not limited to this, and other nozzles of the SJ7 series and SJ3 series of Tejet can also be used.
  • nozzles that meet the selection requirements of the present invention include nozzles with a working pressure in the range of 1.5 bar to 4 bar and a single nozzle with a flow rate of 0.39 to 7 liters/minute or 0.44 to 9.31 liters/minute.
  • the SJ7-015-VP nozzle of Tejet Company includes the following features: producing seven liquid column streams with the same flow rate and flow; excellent spray distribution quality; all of acetal structure, with excellent chemical resistance; work
  • the pressure is in the range of 1.5bar to 4bar; under the usual spraying pressure of unmanned aircraft (2-3bar), the flow rate of a single nozzle is 0.46-0.57 liters/min.
  • the diameter of the jet liquid column of the nozzle that meets the selection requirements of the present invention under the working pressure in the range of 1.5 bar to 4 bar is greater than 1000 microns, for example, 1000 to 1500 microns, 1500 to 2500 microns, 2500 to 4000 microns or 4000 microns to 8000 microns.
  • the spray liquid column of the nozzle that meets the selection requirements of the present invention under the working pressure in the range of 1.5 bar to 4 bar is dispersed by the down-pressure wind field of the unmanned aircraft, and the particle size of the mist droplets formed is greater than 1000 microns, For example, it is 1000 to 1500 microns, 1500 to 2500 microns, 2500 to 4000 microns, or 4000 microns to 8000 microns.
  • the spray liquid column of the nozzle that meets the selection requirements of the present invention under the working pressure in the range of 1.5 bar to 4 bar is dispersed by the down-pressure wind field of the unmanned aircraft, and the particle size of the mist droplets formed meets the following conditions: DV10 is greater than 1000 microns and DV50 is greater than 1000 microns, for example DV10 is 1000 to 1500 microns, 1500 to 2500 microns, 2500 to 4000 microns or 4000 microns to 8000 microns, DV50 is 1000 to 1500 microns, 1500 to 2500 microns, 2500 to 4000 microns Or 4000 microns to 8000 microns.
  • FIG. 5 shows a perspective view of an unmanned aircraft according to an embodiment of the present disclosure
  • FIG. 6 shows a schematic diagram of the operation of an unmanned aircraft according to an embodiment of the present disclosure
  • FIG. 7 shows a nozzle according to an embodiment of the present disclosure. 8 shows the spraying schematic diagram of the spray head shown in FIG. 7.
  • the unmanned aircraft for applying pesticides to crop plants in paddy fields includes: a body 1, a plurality of push-up units 2, a box body 3, at least one spray head 4, and a transport Components and control unit (not shown).
  • a plurality of lift units 2 are arranged on the body 1 and are configured to form a downward pressure wind field to generate lift and thrust for driving the unmanned aircraft.
  • the box body 3 is fixedly arranged on the body 1, and the box body 3 is used for containing pesticides.
  • the box body 3 may be provided at the bottom of the center of the body 1.
  • At least one spray head 4 is arranged on the body to spray pesticides.
  • at least one spray head 4 is provided at the bottom of at least one of the plurality of push-up units 2.
  • the conveying component is used to convey the pesticide from the tank 3 toward at least one spray head 4.
  • the control unit is configured to manipulate the unmanned aircraft to fly over the paddy field in a predetermined route, and when the unmanned aircraft flies over the paddy field, control the conveying component to apply pesticides to the paddy field via at least one spray head 4.
  • At least one spray head 4 sprays pesticides in the form of a liquid column toward at least one spray direction, and preferably an underground pressure wind field disperses and atomizes the liquid column into large mist droplets.
  • the particle size of the mist droplets is greater than 100 microns, preferably greater than 200 microns, preferably greater than 400 microns, preferably greater than 600 microns, preferably greater than 800 microns, preferably greater than 1000 microns.
  • the spray head 4 may include an inlet 41 and a plurality of discharge holes 42, and the box body 3, the conveying part and the spray head 4 are in fluid communication.
  • the inlet 41 conveys and ejects in the form of a liquid column from a plurality of discharge holes 42 (for example, 7 discharge holes), as shown in FIG. 8.
  • the conveying component can be a conveying component commonly used in the art, for example, a pump is used to convey fluid through the hollow wing arm of an unmanned aircraft, and the present invention is not limited thereto.
  • the number of nozzles 4 is four, which are arranged at the bottom of the four lift units 2 of the unmanned aircraft. As shown in FIG. 6, the direction of the discharge hole 42 of the shower head 4 is substantially parallel to the flying direction. Those skilled in the art can also choose more or fewer nozzles, other suitable nozzle positions, and nozzle orientations according to actual needs.
  • each push-up unit 2 includes a rotor and a drive seat, and the drive seat is preferably provided with a drive motor that outputs power to the rotor.
  • the control unit controls the unmanned aircraft to fly on a predetermined route.
  • the route can be recorded in the memory of the control unit; however, it is also conceivable that the drone is controlled remotely, that is, it is connected to a fixed control unit that monitors the corresponding position of the drone and indicates that the drone should move Direction.
  • the control unit can also record the position of the unmanned aircraft above the paddy field, and according to the route of the unmanned aircraft, when the unmanned aircraft flies over the paddy field, control the conveying component to deliver the corresponding amount of pesticides toward the spray head.
  • the pesticide leaves the drone via the spray nozzle and is applied to the paddy field.
  • pesticides in the embodiments of the present disclosure are pesticides suitable for water layer application.
  • pesticides are herbicides, fungicides, insecticides and/or growth regulators.
  • herbicides suitable for water layer application in paddy fields can be used, and their effective active substances include fluoxsulam.
  • the effective active substances of paddy field herbicides suitable for the unmanned aircraft application method of the embodiments of the present disclosure may also include penoxsulam, mesotrione, pyrazosulfuron, bicyclosulfuron, Fluroxypyr, pretilachlor, butachlor, bensulfuron-methyl, pyrazosulfuron-methyl, oxadiazone, oxadiazone, oxyfluorfen, sichlorpyridin, promethacin, and difentrazone Nitrile, oxazimone.
  • the current commonly used application method of fluoxsulam is "aqueous layer application method".
  • the liquid medicine formed into large-particle droplets can effectively avoid drift, and the autonomous flight of the unmanned aircraft can also ensure that the uniformity of spraying is better than that of manual application, further reducing the damage Risks and guaranteed efficacy.
  • unmanned aircraft such as the DJI plant protection unmanned aircraft MG-1P series
  • the nozzle installed on the bottom of the lift unit.
  • the direction of the discharge hole of the nozzle is approximately parallel to the flying direction, that is, the direction of the discharge hole is away from the drone body and/or the box containing the pesticide.
  • the second dilution method is used to prepare the pesticide liquid and add it to the box of the unmanned aircraft. Before the flight operation, the air in the conveying parts and nozzles can be emptied.
  • the unmanned aircraft is activated, and the unmanned aircraft is controlled by the control unit to fly autonomously according to predetermined parameters and routes.
  • the flying height is 2 meters
  • the line change distance is 3-4 meters
  • the flying speed is 3-5 meters per second
  • the water consumption per mu is 1-1.5 liters
  • the suitable higher flow rate is selected
  • all the nozzles are turned on during the flight.
  • the wrap distance refers to the distance between rows or columns of the scheduled flight route.
  • the wrap distance can be preset according to actual needs or obtained through experimental methods. Common wrap distance experiments include: coated paper method, snow test method, etc.
  • the line wrapping distance can also be adjusted according to the ambient wind speed, that is, the higher the wind speed, the smaller the line wrapping distance.
  • the experimental group used Bayer Kenshou (the active ingredient is fluoxsulam), the dose was 12 ml/mu, and the SJ7-015-VP nozzle of Tejet Company, and the control group was treated with Bayer Kenshou (the active ingredient is fluoxsulam). ), dosage 12ml/mu, DJI XR11001 nozzle and Penoxsulam (a broad-spectrum herbicide), dosage 12ml/mu, DJI XR11001 nozzle.
  • the pesticide application method of the unmanned aerial vehicle of the embodiment of the present disclosure is used to apply the pesticide to the rice fields where soybean and sesame crop plants are planted in the surrounding area, respectively.
  • Figure 9 is a graph showing the results of a control experiment of pesticide application on a paddy field in which soybeans are grown in the surrounding area
  • Figure 10 is a graph showing the results of a control experiment of pesticide application on a paddy field in which sesame is grown in the surrounding area.
  • fluoxsulam 200SC can effectively remove weeds, and the nozzles and application methods selected in the embodiments of the present disclosure can effectively prevent the drift of small-size droplets from being sensitive to the surrounding paddy fields. Phytotoxicity of crop plants.
  • Treatment 1. Blank control; 2. Fluoxsulam 200SC, dose 12ml/mu—manual sanding (medicine soil method); 3. Fluoxsulam 200SC, dose 12ml/mu—using the present disclosure Unmanned aircraft pesticide application method.
  • Flight parameters flying height of 2 meters, flying speed of 4.8 meters per second, spray pattern of 3 meters, water consumption per mu is 1 liter.
  • Unmanned aircraft model DJI MG-1P.
  • Nozzle model Tejet SJ7-015-VP.
  • Figure 11 shows a photograph of the results 45 days after the field trial administration. It can be seen from FIG. 11 that, compared with manual application, the use of the unmanned aerial vehicle application method of the embodiments of the present disclosure can significantly improve the effect of pesticides.
  • the unmanned aircraft with drip nozzles and the method of applying pesticides by the unmanned aircraft in the embodiments of the present disclosure can generate large-diameter droplets and effectively prevent the droplets from drifting.
  • the use of unmanned aircraft spraying can ensure the uniformity of spraying, ensure the efficacy of the pesticide, and reduce the risk of pesticide damage to the surrounding sensitive crop plants.
  • Laboratory tests are used to verify that the unmanned aerial vehicle pesticide application methods of some embodiments of the present disclosure can prevent or reduce the drift of the droplets of the drug liquid.
  • the droplet size of different spray nozzles and chemical liquid systems was measured by laser particle size analyzer (Bettersize2000S).
  • the spray pressure was adjusted to 3bar by adjusting the water inlet valve and the air release valve of the spray system, and different nozzles were used to spray the liquid to obtain the test results shown in Table 3:
  • DV50 is about 120 microns under the working pressure of 3bar; using Tejet SJ7-015-VP nozzle and special Jet SJ3-015-VP spray nozzle sprays the droplet size of the spray liquid to meet the following requirements: DV50 is greater than 500 microns at a working pressure of 3bar. It should be pointed out that in the above test, the range of the laser particle size analyzer is 500 microns, therefore, the test result with a DV50 greater than 500 microns is obtained.
  • FIG. 12 shows a schematic diagram of the wind tunnel system 5 used in the second laboratory test.
  • the wind tunnel system 5 includes a fan 51, a first wind baffle 52, a grid member 53, a second wind baffle 54, a rectifying member 55, a spray liquid container 57, a mist collecting device 58 and mist Collection container 59.
  • the test is carried out in the wind tunnel system 5 as shown in FIG. 12, and the nozzle 56 is arranged between the rectifying member 55 and the droplet collecting device 58, so that the fan 51, the first wind baffle 52, the grid member 53, and the second The wind baffle 54 and the rectifying member 55 are arranged in the upwind direction of the nozzle, and the droplet collecting device 58 is arranged in the downwind direction of the nozzle.
  • the drone pesticide application method can spray droplets with a larger particle size, and therefore can prevent or reduce the drift of the droplets.

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  • Life Sciences & Earth Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Insects & Arthropods (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Catching Or Destruction (AREA)

Abstract

L'invention concerne une véhicule aérien sans pilote, qui possède une tête de pulvérisation à application goutte-à-goutte, et un procédé d'application de pesticides à des plantes cultivées dans une rizière au moyen du véhicule aérien sans pilote. Le procédé consiste : à utiliser un véhicule aérien sans pilote qui est pourvu d'au moins une tête de pulvérisation (4) ; à manipuler ou à régler le véhicule aérien sans pilote pour voler au-dessus de la rizière le long d'un itinéraire prédéterminé ; à appliquer des pesticides par l'intermédiaire de ladite tête de pulvérisation (4) lors du vol au-dessus de la rizière, l'application de pesticides par l'intermédiaire de ladite tête de pulvérisation (4) consistant à pulvériser des pesticides sous la forme d'une colonne de liquide dans au moins une direction de pulvérisation par l'intermédiaire de ladite tête de pulvérisation (4).
PCT/CN2021/099123 2020-06-11 2021-06-09 Véhicule aérien sans pilote ayant une tête de pulvérisation à application goutte-à-goutte et procédé d'application de pesticides à l'aide d'un véhicule aérien sans pilote WO2021249429A1 (fr)

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