Automatic space spraying device and spraying method

Abstract

The invention relates to the technical field of deinsectization devices, and provides an automatic space spraying device and method.The automatic space spraying device comprises a machine body, a pulley assembly and a spraying assembly, the pulley assembly can drive the machine body to move along a track, the spraying assembly comprises a spraying pipe, a liquid conveying pipe and a gas conveying pipe, and a first end plate is arranged at one end of the spraying pipe; the first end plate is provided with a jet orifice, the liquid conveying pipe is arranged in the jet pipe, the outer circumferential wall of the liquid conveying pipe and the inner circumferential wall of the jet pipe are arranged at intervals to define a gas channel, one end of the liquid conveying pipe is open to form a liquid outlet, and the liquid outlet and the jet orifice are arranged at intervals in the axial direction of the jet pipe so that the gas channel can be communicated with the jet orifice. The gas conveying pipe is communicated with the gas channel. The automatic space spraying device provided by the embodiment of the invention can automatically perform pesticide spraying operation, and the risk that field management personnel are exposed in pesticide is reduced, so that the pesticide spraying safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pest control devices, and particularly to an automatic space spraying device and a spraying method. Background Art

[0002] In the modern vegetable planting process, disease prevention and control is a key link to ensure the healthy growth of vegetables and stable yields. However, in the existing related technologies, the manual pesticide application method not only has low efficiency, but also significantly increases the chance of direct contact between field management personnel and pesticides, greatly increasing the risk of pesticide exposure. Since it is necessary to manually operate a sprayer or hold a spray gun, the management personnel have to shuttle between the crops frequently, which not only consumes a large amount of time and manpower, but also it is difficult to completely avoid direct contact with the skin or respiratory tract during the pesticide application process, which endangers the physical health of the management personnel. Summary of the Invention

[0003] The present invention provides an automatic space spraying device to solve the defect that management personnel are exposed to pesticides during pesticide application in the prior art, realize automatic pesticide application, and protect the health of management personnel.

[0004] The present invention provides a spraying method.

[0005] An embodiment of the present invention discloses an automatic space spraying device, including: A body; A pulley assembly, which can drive the body to move along a track; A spraying assembly, the spraying assembly includes a spray pipe, an infusion pipe and an air supply pipe. One end of the spray pipe is provided with a first end plate, and a spray orifice is provided on the first end plate. The infusion pipe is arranged in the spray pipe, and a gas passage is defined by a spaced arrangement between the outer peripheral wall of the infusion pipe and the inner peripheral wall of the spray pipe. One end of the infusion pipe is open to form a liquid outlet. In the axial direction of the spray pipe, the liquid outlet is spaced from the spray orifice so that the gas passage is communicated with the spray orifice. The air supply pipe is communicated with the gas passage; When the liquid pesticide in the infusion pipe sprays out from the liquid outlet, it is impacted by the high-pressure gas in the gas passage, and the liquid pesticide diffuses at the spray orifice to form atomized pesticide.

[0006] In some embodiments, when performing a spraying operation, the calculation formula for the spraying flow rate Q of the spraying assembly is: Q = DMv / 666.67 Wherein, the unit of Q is L / min; D is the spraying distance; M is the water consumption per mu; v is the traveling speed of the automatic space spraying device.

[0007] In some embodiments, the automatic space spraying device includes a drag chain assembly which can move along with the machine body. An air supply pipe and a liquid supply pipe are laid in the drag chain assembly. The air supply pipe is communicated with the air delivery pipe, and the liquid supply pipe is communicated with the liquid delivery pipe.

[0008] In some embodiments, the automatic space spraying device includes a sensor assembly which is arranged on the machine body to collect the surrounding temperature and humidity.

[0009] In some embodiments, the pulley assembly includes a pulley, a transmission member and a motor. The motor is arranged inside the machine body, and the motor drives the transmission member to drive the pulley to rotate.

[0010] In some embodiments, the automatic space spraying device includes a controller which is electrically connected to the motor, and the sensor assembly is electrically connected to the controller.

[0011] An embodiment of the present invention discloses a spraying method, which includes: S1. Construct a plant disease index table based on temperature and humidity; S2. The automatic space spraying device performs a patrol operation to obtain the temperature and humidity distribution information in the greenhouse; S3. Search for the corresponding disease index in the plant disease index table according to the temperature and humidity distribution information; S4. Control the automatic space spraying device to perform a spraying operation or a dormancy operation according to the magnitude of the disease index.

[0012] In some embodiments, S4 includes: S41. If the disease index is greater than a preset value, control the automatic space spraying device to perform a spraying operation; after the application of pesticides, no automatic pesticide application is performed during the safe interval period of pesticide use, and wait for manual inspection of the pesticide application effect; S42. If the disease index is less than the preset value, control the automatic space spraying device to enter dormancy. After the automatic space spraying device completes dormancy, re - execute S2 and S3.

[0013] In some embodiments, S41 includes: if the disease index is greater than a preset value, wait for a set time and then control the automatic space spraying device to perform a spraying operation.

[0014] In some embodiments, S1 includes: S11. Collect and separate field pathogenic bacteria, culture them for a first preset time at different temperatures and humidities to prepare a spore suspension; S12. Inoculate the experimental plants cultivated to a preset stage with the spore suspension and then culture them for a second preset time; S13. Move the experimental plants to natural sunlight for the third preset time; S14. Investigate the disease index of the experimental plants to construct the disease index table of the plants.

[0015] The automatic space spraying device of the embodiment of the present invention can automatically perform spraying operations, reducing the risk of field management personnel being exposed to pesticides, thereby improving the safety of pesticide application.

[0016] The spraying method of the embodiment of the present invention, by using the constructed disease index table of plants and combining the temperature and humidity data collected in real time, can predict the risk of disease occurrence in advance, and take prevention and control measures such as spraying operations or dormancy operations in a timely manner, effectively reducing the probability and severity of disease occurrence. At the same time, it realizes automatic pesticide application and reduces the risk of field management personnel being poisoned by contacting pesticides. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of the automatic space spraying device provided by the present invention.

[0019] Figure 2 It is a schematic structural diagram of the spraying component of the automatic space spraying device provided by the present invention.

[0020] Figure 3 It is a schematic diagram of the spraying method provided by the present invention.

[0021] Figure 4 It is a schematic diagram of S1 of the spraying method provided by the present invention.

[0022] Reference Signs: 1. Body; 2. Pulley assembly; 21. Pulley; 22. Transmission member; 3. Spraying component; 31. Spray pipe; 311. First end plate; 3111. Spray opening; 32. Liquid delivery pipe; 321. Liquid outlet; 33. Gas delivery pipe; 4. Drag chain assembly; 5. Sensor assembly; 6. Track. Detailed Embodiments

[0023] To make the objectives, technical solutions and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions in the present invention in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0024] As Figure 1 and Figure 2 shown, an embodiment of the present invention discloses an automatic space spraying device, including a machine body 1, a pulley assembly 2 and a spraying assembly 3.

[0025] The pulley assembly 2 can drive the machine body 1 to move along the track 6.

[0026] The spraying assembly 3 includes a spray pipe 31, an infusion pipe 32 and a gas transmission pipe 33. One end of the spray pipe 31 is provided with a first end plate 311, and a spraying port 3111 is provided on the first end plate 311. The infusion pipe 32 is arranged inside the spray pipe 31, and the outer peripheral wall of the infusion pipe 32 is spaced from the inner peripheral wall of the spray pipe 31 to define a gas passage. One end of the infusion pipe 32 is open to form a liquid outlet 321. In the axial direction of the spray pipe 31, the liquid outlet 321 is spaced from the spraying port 3111 so that the gas passage is communicated with the spraying port 3111. The gas transmission pipe 33 is communicated with the gas passage.

[0027] For example, the track 6 is arranged inside a greenhouse. The pulley assembly 2 includes a plurality of pulleys 21. The pulley assembly 2 is arranged on the machine body 1 to drive the machine body 1 to move along the track 6.

[0028] The front end of the spray pipe 31 is provided with a first end plate 311, and a spraying port 3111 is provided in the middle of the first end plate 311. The front end of the infusion pipe 32 is open to form a liquid outlet 321. The liquid outlet 321 is arranged inside the spray pipe 31. In the axial direction of the spray pipe 31, the liquid outlet 321 is spaced from the spraying port 3111. The outer peripheral wall of the infusion pipe 32 is spaced from the inner peripheral wall of the spray pipe 31 to define an annular gas passage. The gas transmission pipe 33 is communicated with the annular passage to deliver high-pressure gas into the annular passage.

[0029] When the liquid pesticide in the infusion pipe 32 is ejected from the liquid outlet 321, it is impacted by the high-pressure gas in the gas passage, and then the liquid pesticide diffuses in the spraying port 3111 and the area near the spraying port 3111 to form atomized pesticide. Thus, a pneumatic-assisted two-phase flow nozzle is used to perform ultra-low volume atomization on the pesticide. The diameter of the atomized droplets is in the micron range, and it is extremely easy to disperse between the canopy layers, so that the diffusion distance of the atomized pesticide is relatively far, thereby improving the insecticidal effect.

[0030] In the related art, the manual pesticide application method is not only inefficient but also significantly increases the chance of direct contact between field management personnel and pesticides, greatly enhancing the risk of pesticide exposure. With long-term exposure to the pesticide environment, management personnel face the safety hazard of poisoning, which threatens their health.

[0031] In the automatic space spraying device according to the embodiment of the present invention, the pulley assembly 2 can drive the automatic space spraying device to move smoothly along the preset track 6, ensuring the precise navigation and positioning of the automatic space spraying device within the operation area. The spraying assembly 3 atomizes the liquid pesticide and then disperses it.

[0032] In the automatic space spraying device according to the embodiment of the present invention, by controlling the operation of the spraying assembly 3 and the pulley assembly 2, the spraying operation can be automatically realized, thereby reducing the labor intensity of field management personnel and the risk of pesticide exposure, while improving the effect and efficiency of disease prevention and control, and ensuring the personal safety of field management personnel.

[0033] Therefore, the automatic space spraying device according to the embodiment of the present invention can automatically perform the spraying operation, reducing the risk of field management personnel being exposed to pesticides, thereby improving the safety of pesticide application.

[0034] In some embodiments, when performing the spraying operation, the calculation formula for the spraying flow rate Q of the spraying assembly 3 is: Q = DMv / 666.67 Wherein, 666.67 is the area of one mu of land, with the unit of ㎡; The unit of Q is L / min; D is the spraying distance, which can be the width of the greenhouse, for example, 10m.

[0035] M is the water consumption per mu; v is the traveling speed of the automatic space spraying device.

[0036] The spraying flow rate Q sprayed by the spraying assembly 3 during the spraying operation is related to the spraying distance D and the traveling speed v of the automatic spraying device. By controlling the spraying distance, water consumption per mu, and traveling speed, the spraying flow rate Q of the spraying assembly 3 can be controlled, and thus it is convenient to control the amount of pesticide sprayed.

[0037] In some embodiments, the automatic space spraying device includes a drag chain assembly 4. The drag chain assembly 4 can move following the body 1. An air supply pipe (not shown in the figure) and a liquid supply pipe (not shown in the figure) are laid inside the drag chain assembly 4. The air supply pipe is communicated with the air delivery pipe 33, and the liquid supply pipe is communicated with the liquid delivery pipe 32.

[0038] For example, as Figure 1 shown, the drag chain assembly 4 can flexibly stretch following the movement of the body 1, ensuring that the internally laid air supply pipe and liquid supply pipe are not affected by the external environment and maintaining a good working state.

[0039] The air supply pipe inside the drag chain assembly 4 is connected to the air delivery pipe 33 to ensure a stable air flow supply; while the liquid supply pipe is connected to the liquid infusion pipe 32 to ensure the accurate delivery of the required liquid medicine, thereby realizing efficient and precise operation and enhancing the reliability of the automatic space spraying device.

[0040] It can be understood that the air supply pipe can be connected to an air pump, and the liquid supply pipe can be connected to a medicine box.

[0041] In some embodiments, the automatic space spraying device includes a sensor assembly 5, and the sensor assembly 5 is provided on the body 1 to collect the surrounding temperature and humidity.

[0042] For example, as Figure 1 shown, the sensor assembly 5 is provided on the top of the body 1. The sensor assembly 5 is used to collect the temperature and humidity data of the surrounding environment in real time, ensure that the microclimate changes in the greenhouse can be accurately monitored and responded to, and thus optimize the disease prevention and control measures. The sensor assembly 5 includes a temperature sensor and a humidity sensor.

[0043] In some embodiments, the pulley assembly 2 includes a pulley 21, a transmission member 22, and a motor (not shown in the figure). The motor is provided inside the body 1, and the motor drives the pulley 21 to rotate by driving the transmission member 22.

[0044] For example, the motor is installed inside the body 1 as a power source, and its output shaft is connected to the transmission member 22. The transmission member 22 can be a synchronous belt, a chain, a gear, etc. After the motor is started, power is transmitted to the pulley 21 through the transmission member 22, so that the pulley 21 can rotate along the track 6, thereby driving the entire body 1 to move along a predetermined path.

[0045] In some embodiments, the automatic space spraying device includes a controller (not shown in the figure). The controller is electrically connected to the motor, and the sensor assembly 5 is electrically connected to the controller.

[0046] The controller is electrically connected to the motor and is used to control the operating state of the motor. At the same time, the sensor assembly 5 is also electrically connected to the controller to transmit the temperature and humidity data in real time. The controller analyzes and processes the environmental information collected by the sensor, and automatically adjusts the working parameters of the motor to optimize the performance of the automatic space spraying device and ensure that it can perform tasks efficiently and precisely under different environmental conditions.

[0047] Optionally, the controller includes a computer.

[0048] As Figure 3 shown, the embodiments of the present invention disclose an automatic space spraying device, including: S1. Construct a plant disease index table based on temperature and humidity.

[0049] S2. The automatic space spraying device performs inspection operations to obtain the temperature and humidity distribution information in the greenhouse. For example, when the field management personnel find diseased plants during the inspection, they send a command to start monitoring the disease risk to the controller. The automatic space spraying device inspects the greenhouse once every hour, continuously collects temperature and humidity data during the inspection process and calculates the average value.

[0050] S3. Find the corresponding disease index in the plant disease index table according to the temperature and humidity distribution information. For example, use the bilinear interpolation method to find the corresponding disease index from the disease index table constructed in step S1.

[0051] S4. Control the automatic space spraying device to perform spraying operations or dormancy operations according to the size of the disease index.

[0052] In the spraying method of the embodiment of the present invention, by using the constructed plant disease index table and combining the real-time collected temperature and humidity data, the risk of disease occurrence can be predicted in advance, and prevention and control measures such as spraying operations or dormancy operations can be taken in time, effectively reducing the probability and severity of disease occurrence. At the same time, automatic drug application is realized, reducing the risk of poisoning for field management personnel exposed to pesticides.

[0053] In some embodiments, S4 includes: S41. If the disease index is greater than the preset value, control the automatic space spraying device to perform spraying operations. After the application of pesticides, no automatic pesticide application is performed during the safe interval for pesticide use, and wait for manual inspection of the pesticide application effect.

[0054] S42. If the disease index is less than the preset value, control the automatic space spraying device to enter dormancy. After the automatic space spraying device completes dormancy, re-execute S2 and S3.

[0055] For example, the preset value is 5.00. When the disease index calculated according to the result of step S3 is greater than 5.00, the disease index is relatively high, and it can be considered that the current temperature and humidity are conducive to the production of virulent spores by pathogenic bacteria, and the automatic space spraying device is controlled to perform spraying operations.

[0056] When the disease index calculated according to the result of step S3 is less than 5.00, the disease index is relatively low, and the automatic space spraying device is controlled to enter dormancy. The dormancy time is set as needed, such as 12 hours, 24 hours, or 48 hours, etc.

[0057] Each pesticide has a safe interval, that is, how long to wait before applying pesticides again after application. After the application of pesticides, no automatic pesticide application is performed during the safe interval for pesticide use, so as to optimize the pesticide application process.

[0058] Optionally, the preset value is set according to the actual disease condition. For example, the preset value is 4.50 - 5.50, etc.

[0059] In some embodiments, S41 includes: if the disease index is greater than a preset value, after waiting for a set time, controlling the automatic space spraying device to perform a spraying operation.

[0060] For example, the set time is 4 to 6 hours. When the accumulated time reaches the set time, it is considered that enough pathogenic spores will be generated in the greenhouse. The controller sends an instruction to the automatic space spraying device to perform a spraying operation, and the automatic space spraying device performs spraying.

[0061] In some embodiments, S1 includes: S11. Collect and isolate field pathogenic bacteria, and culture them for a first preset time at different temperatures and humidities to prepare a spore suspension; for example, to explore the pathogenic ability of fungal spores generated under different environmental factors, the pathogenic bacteria collected and isolated from the field are inoculated on a culture medium, and after being cultured for the first preset time under different temperature and humidity combinations, the pathogenic bacteria are allowed to fully reproduce and produce spores. After the culture is completed, the cultured pathogenic bacteria are prepared into a spore suspension. The first preset time can be set as needed, such as 24 hours, 48 hours, or 72 hours, etc.

[0062] S12. After inoculating the experimental plants cultivated to a preset stage with the spore suspension, culture them for a second preset time; for example, when the experimental plants are cultivated to have 2 true leaves, the aforementioned spore suspension is inoculated onto the leaves with a pipette gun, and then the inoculated experimental plants are cultured for the second preset time.

[0063] Optionally, the preset stage can be having 2 true leaves or 3 true leaves, etc. The experimental plants are cucumbers, potatoes, eggplants, etc. The first preset time can be set as needed, such as 24 hours, 48 hours, or 72 hours, etc.

[0064] S13. Move the experimental plants to natural sunlight for cultivation for a third preset time. For example, after transferring the experimental plants to the greenhouse, cultivate them under natural sunlight conditions, and conduct a disease index survey five days later. The first preset time can be set as needed, such as 3 days, 5 days, or 7 days, etc. By transferring the experimental plants to be cultivated under natural sunlight conditions, the actual field environment can be accurately simulated to ensure that the experimental results have high reliability and representativeness.

[0065] S14. Conduct a disease index survey on the experimental plants to construct a plant disease index table.

[0066] The following takes the cultivation of cucumbers as an example to introduce an embodiment of the spraying method of the present invention.

[0067] To explore the pathogenicity of fungal spores produced under different environmental factors, Corynespora cassiicola collected and isolated from the field was inoculated onto a potato dextrose agar (PDA) medium with a diameter of 85 mm and cultured in an incubator with controllable temperature and humidity for 72 hours to allow Corynespora cassiicola to fully reproduce and produce spores. Experiments were carried out under the combinations of 15°C, 20°C, 25°C, 30°C, 35°C and relative humidity of 60%, 80%, 100% (a total of 15 temperature and humidity combinations, with each combination repeated 3 times).

[0068] After the cultivation was completed, 10 mL of sterile water containing 0.05% Tween 20 was added to the petri dish in a laminar flow hood, and the surface of the medium was gently brushed with a sterile soft brush, and then filtered through four layers of sterile gauze to remove mycelial fragments. Vortex for 5 s to suspend the spores. A batch of cucumber plants was pre-cultivated, and when they grew to two true leaves, the aforementioned spore suspension was inoculated onto the leaves with a pipette, and 9 drops of 10 μL spore suspension were dripped onto each leaf. The inoculated cucumber plants were cultured at 25°C and 98% relative humidity for 48 hours, and then transferred to the greenhouse for cultivation under natural sunlight conditions. Five days later, the disease index was investigated according to the "Guidelines for Field Efficacy Trials of Fungicides Against Corynespora Leaf Spot of Cucumber (DB37 / T 4105-2020)".

[0069] The results showed that temperature and humidity greatly affected the pathogenicity of Corynespora cassiicola spores. Under some temperature and humidity conditions, although Corynespora cassiicola produced spores, it could not infect healthy plants.

[0070] When field managers found diseased plants during the inspection, they sent a command to start monitoring the disease risk to the controller. The automatic space spraying device walked in the greenhouse once every hour. During the walking process, temperature and humidity data were continuously collected and averaged, and then the corresponding disease index was found from the constructed disease index table using bilinear interpolation. When the calculated disease index was greater than 5.00, the current temperature and humidity were conducive to the production of pathogenic spores by Corynespora cassiicola, and the risk was high. When the high risk accumulated for four hours, it was considered that enough pathogenic spores would be produced, and the system sent an instruction to the automatic space spraying device to perform a spraying operation once.

[0071] After receiving the operation instruction, the automatic space spraying device started to walk and spray. The spraying flow rate was calibrated, and the water consumption per mu was 2 L / mu. The target flow rate of the nozzle was calculated according to the following formula: Where 666.67 is the area of one mu of land, Q is the target flow rate, with the unit of L / min; D is the spraying distance, taking the width of the greenhouse, which is 8.30 m in this embodiment; M is the water consumption per mu, which is 2 L / mu in this embodiment; v is the traveling speed of the automatic space spraying device, which is 60 m / min.

[0072] After the pesticide application is completed, wait without automatic pesticide application during the safe waiting period for pesticide use, and wait for manual inspection of the pesticide application effect.

[0073] To test the beneficial effects of the present invention, field tests were carried out: Three adjacent greenhouses were selected, and cucumber Zhongnong No. 6 was sown on the same sowing date, and the same management measures such as ventilation and irrigation were adopted. At the middle position of the greenhouse, 5 cucumber plants were inoculated with a spore suspension of Corynespora cassiicola at 105 CFU / mL by spraying. Then, the three greenhouses were not treated with pesticides as the control group, and manual pesticide application once every 7 days and the automatic pesticide application equipment developed in this embodiment were adopted. Both the manual pesticide application and the automatic pesticide application equipment sprayed 400 g / L of cyflufenamid·pyraclostrobin (mass fraction 35.2%, of which cyflufenamid is 17.6% and pyraclostrobin is 17.6%), sprayed with a 200-fold dilution, and the amount of liquid medicine applied per mu was 2 L / mu, belonging to ultra-low volume spraying. The disease index was investigated by sampling at 5 points on the 5th, 15th, and 30th days. The disease index and control effect were investigated according to DB37 / T 4105-2020.

[0074] The automatic space spraying device of the embodiment of the present invention applies pesticides targeted when there is a risk of disease transmission, and the control effects are similar. One pesticide application was reduced in the later stage of the test. At the same time, the ultra-low volume spraying does not significantly increase the humidity in the greenhouse, delays the spread of the disease, and at the same time, the amount of pesticide used during the 21-day growth period is reduced by 39.74% compared with the manual regular pesticide application.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic space spray device, characterized in that: include: Body; A pulley assembly, wherein the pulley assembly can drive the machine body to move along the track; A spray assembly, the spray assembly comprising a nozzle, a liquid delivery tube and an air delivery tube, one end of the nozzle is provided with a first end plate, the first end plate is provided with an injection port, the liquid delivery tube is arranged in the nozzle, and the outer peripheral wall of the liquid delivery tube is spaced apart from the inner peripheral wall of the nozzle to define a gas channel, one end of the liquid delivery tube is open to form a liquid outlet, the liquid outlet and the injection port are spaced apart in the axial direction of the nozzle so that the gas channel is connected to the injection port, and the air delivery tube is connected to the gas channel; When the liquid pesticide in the liquid delivery tube is sprayed out from the liquid outlet, it is impacted by the high-pressure gas in the gas channel, and the liquid pesticide diffuses at the spray port to form atomized pesticide.

2. The automatic space spray device according to claim 1, characterized in that: The calculation formula of the spray flow rate Q of the spray assembly during the spray operation is: Q=DMv / 666.67 Among them, the unit of Q is L / min; D is the spray distance; M is the water consumption per mu; v is the travel speed of the automatic space spray device.

3. The automatic space spray device according to claim 1 or 2, characterized in that: The automatic space spray device includes a drag chain assembly, which can move with the body. An air supply pipe and a liquid supply pipe are laid in the drag chain assembly. The air supply pipe is connected to the air delivery pipe, and the liquid supply pipe is connected to the liquid delivery pipe.

4. The automatic space spray device according to claim 1 or 2, characterized in that: The automatic space spray device comprises a sensor assembly, and the sensor assembly is arranged on the body to collect the surrounding temperature and humidity.

5. The automatic space spray device according to claim 4, characterized in that: The pulley assembly comprises a pulley, a transmission member and a motor. The motor is disposed in the body, and the motor drives the transmission member to drive the pulley to rotate.

6. The automatic space spray device according to claim 5, characterized in that: The automatic space spray device comprises a controller, the controller is electrically connected to the motor, and the sensor assembly is electrically connected to the controller.

7. A spraying method using the automatic space spraying device according to any one of claims 1 to 6, characterized in that: include: S1. Construct a plant disease index table based on temperature and humidity; S2, the automatic space spray device performs inspection operations to obtain temperature and humidity distribution information in the greenhouse; S3, searching the corresponding disease index in the plant disease index table according to the temperature and humidity distribution information; S4. Controlling the automatic space spray device to perform spraying operation or dormant operation according to the size of the disease index.

8. The spraying method according to claim 7, characterized in that: The S4 includes: S41, if the disease index is greater than a preset value, the automatic space spraying device is controlled to perform spraying operation; after the spraying is completed, the automatic spraying is stopped within the safe interval of pesticide use, and the spraying effect is waited for manual inspection; S42. If the disease index is less than the preset value, the automatic space spray device is controlled to sleep, and S2 and S3 are executed again after the automatic space spray device completes the sleep state.

9. The spraying method according to claim 8, characterized in that: The S41 includes: if the disease index is greater than a preset value, after waiting for a set time, controlling the automatic space spray device to perform a spraying operation.

10. The spraying method according to claim 7, characterized in that: The S1 includes: S11, collecting and isolating field pathogens and culturing them at different temperatures and humidities for a first preset time to prepare a spore suspension; S12, inoculating the experimental plants cultivated to the preset stage with the spore suspension and then cultivating them for a second preset time; S13, moving the experimental plants to natural sunlight for cultivation for a third preset time; S14. Conduct a disease index survey on the experimental plants to construct the plant disease index table.

Images