Aircraft spraying method . Pesticides with aircraft , powders , granules , baits and other withdrawal uniformly applied within the target area of application methods , also known as air spraying method . It is the effect of the highest application methods for contiguous planting crops , orchards, forests, grasslands, locust breeding plots of wasteland and beach etc. agricultural sprayers spraying . For the aircraft spraying pesticide formulations are powders , wettable powders, water dispersible granules , suspensions, dry suspensions, emulsifiable concentrates, liquid, oil , granules and the like . As particles drift severe dusting aircraft , has been rarely used , even in the morning dusting should also be operating under steady flow conditions , aircraft ground powder powder powder for a little thicker than some . Can be dubbed to water suspension formulations for high- volume spray , when mixed with other formulations are required to prevent particles flocculation . May be formulated for water cream emulsion dosage forms and for high capacity and low volume spray , for low- volume spraying may be added in the amount of spray solution of urea , potassium phosphate dioxide to reduce the droplet evaporation. ULV spray oil directly to its flash point not less than 70 ℃.
Aircraft spraying pesticides, available capacity and ULV low ; low volume spray spray volume of 10-50 l / ha ; ultra low volume spray spray volume of l ~ 5 l / ha ; General required droplet coverage density of 20 / cm 2 or more. Aerial spraying of fungicide tag type , generally use high-volume spray , spray volume of 50 liters / ha or more ; spraying fungicides can be low-volume spray , spray volume of 20 to 50 l / ha. Aerial backpack sprayers spraying of herbicides, usually low-volume sprays, spray volume of 10 to 50 l / ha , the use of wettable powder and 40 to 50 l / ha . Aircraft applicator rodenticides, generally in the forest and grassland Shi bait or poison pill .
Aircraft spraying operation time , usually half an hour after sunrise and half an hour before sunset , as the conditions are ripe , but also night operations. Job wind: Dusting is not greater than 3 m / s, spray or spray particulate agent is not greater than 4 m / sec, sprinkle granules of not more than 6 m / s. Flight altitude and effective spray cap varies by model .
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