In the formation of the modern scientific plant protection concept, the promotion of new and new things, the use of flying anti-agents and special additives for flying defense came into being. Flying anti-agent meets the high concentration, fine spray and low-capacity ultra-low-volume spray technology of aviation plant protection. It has certain requirements on the duration and residue of the liquid. The activity is high, the amount of acre is small, and there is a systemic conductivity. The active ingredient for crop safety is a new type of agent mainly composed of water-based water, suspension and water emulsion. Adding fly-proof special agent to the flying anti-agent can increase the sedimentation rate of the mist droplet; increase the ratio of the fine particle size droplet to reduce the drift; at the same time reduce the evaporation of the liquid in the spraying process due to the influence of high temperature and wind field; The adhesion rate of the agent after falling on the surface of the crop; enhancing the spread and permeability of the liquid on the surface of the crop, so that the crop can better absorb the liquid . The traditional pesticide preparations mainly include an emulsion type and a powder type. The emulsifiable concentrate is a pesticide preparation prepared by dissolving the water-insoluble original medicine in an organic solvent such as toluene or xylene and an emulsifier; the powder type is mainly a wettable powder, and the powder type is mainly a wettable powder. A powdered preparation that is dispersed in water to form a stable suspension.
In the field aviation plant protection operation, the pesticides are generally provided by the oil farmers. According to the planting amount of the plant protection machine, the number of acres per plant is configured according to the amount of the drug used. This is the same as the traditional pesticide configuration method, so that the drug configuration has problems: the pesticide is sprayed according to the amount of the plant. In the field, ignore the effect of ultra-low volume spray . The current shallow plant application methods in aviation plant protection operations:
The speed of the plant protection machine is kept at 4~8 m / s, and the flying height is maintained at 0.8~1.5 m. According to the flow system of the plant protection machine, the application rate per acre is 500~1000 ml, but now the ultra-low volume spray The application method does not fully exert the superior advantages of ultra-low-volume spraying . The development of high-quality special anti-foaming agent and special anti-foaming agent for anti-flying is to promote the transformation of agricultural development mode, scientifically control the use of pesticides, and ensure the safety of agricultural production. The quality and safety of agricultural products and the safety of ecological environment promote the basic requirements of sustainable development of agriculture. Among them, the high-efficiency, slow-release and water-based nano-flying agent of Nanjing Good Science Technology can be properly concerned.
Flight defense experience reference (Mr. Wang):
1. Liquid preparations such as suspension, water, cream, water emulsion, microemulsion, etc., using one dilution and one neutralization.
Second, the wettable powder should be neutralized three times with secondary dilution, otherwise it is easy to block the nozzle.
Ten liters of plant protection powder powder dispensing program: 600 g of pyrone ketone can be diluted with 4000 g of clean water, stir all the powder, add 3000 g of water, dilute and mix well, add 200 g of special agent for flying defense, then add Mix 2200 g of purified water and filter the solution with a fine filter at the inlet of the drone box.
Flow calculation formula
                 m=W/(V*A)
m--Total flow rate of all nozzles of plant protection machine (ml / s)
W--specified effective amount per acre (ml)
V--plant protection machine flight speed (m / s)
A--The spray width of the plant protection machine (m)
                         M=m/r
M--flow per nozzle (ml / sec)
M--General flow rate of plant protection machine nozzle (ml / sec)
R--Number of nozzles for plant protection machine
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