Machine preparation
According to the object of control and the requirement of spray operation, the type of sprayer, the type of nozzle and the size of spray hole are selected correctly. For example, in field prevention and control of diseases and insect pests, choose hydraulic sprayer, cone fog nozzle. We should use spray bar sprayer and fan-shaped sprayer when weeding. Fruit trees, sidewalks, trees should use spray guns, high-pressure hydraulic sprayer, or air sprayer.
Check the machine before operation, so that each part is smooth, no leakage, flexible switch, good atomization, all parts are in good technical condition.
According to the spray pressure at normal work and the definite nozzle spray, the flow rate of each nozzle (liter / min) is measured, and the total flow rate is equal to the sum of the flow rate of each nozzle.
Pilot spray. Check to see if it works.
Spray operation
Calculation of unit running speed. According to the requirement of agricultural technology, the walking speed of the unit is calculated by V press type:
V=40 * shower head flow (L / min) / spray width (m * per acre) (per liter / min)
Driving speed - determined and not arbitrarily changed, is an important parameter to ensure the effect of spraying.
The height of the nozzle is away from the target, and the height of the nozzle is determined according to the nozzle used.
Walking method. A shuttle like method is adopted, and the adjacent work width is taken into account.
The security technology in operation. Should wear safety protection supplies; and prohibit work, after work should be thoroughly cleaned, can eat; should pay attention to the change of the wind direction in operation; when dosing spatter; liquid container in time to handle, not littering.