Machine preparation 1 Correctly select the type of sprayer, the type of spray head, and the size of the sprayer according to the requirements of the control object and the spray operation. For example, in the case of pest control in Daejeon, hydraulic sprayers and conical fog nozzles were selected. Weeding spray should be used sprayer, fan-shaped spray head. Fruit trees, sidewalk trees, spray guns, high pressure, hydraulic sprayers, or airborne sprayers. 2 Check the equipment before operation to ensure that all parts are smooth, switchable, and well atomized. Each part is in good technical condition. 3 According to the spray pressure and the determined nozzle spray during normal operation, the flow rate (l/min) of each nozzle is measured, and the total flow is equal to the sum of the flow rate of each nozzle. 4 test spray. Check if it works properly. Spray operation 1 unit walking speed calculation. According to the requirements of agricultural technology, the unit's walking speed V is calculated as follows: V = 40 nozzle flow (liters per minute) / spray rate (meters per acre (liters per minute) of applied speed is determined, can not be arbitrarily changed, It is an important parameter to guarantee the spraying effect.. 2. The height of the nozzle from the target. According to all the nozzles to determine the height of the nozzle from the target. 3 walking method. Generally use the shuttle method, and pay attention to the connection of adjacent work width. In the safety technology, we should wear safety protection products; work is forbidden to eat and drink, the work should be thoroughly cleaned before eating; the operation should pay attention to changes in the wind direction; pay attention to prevent splashing when adding medicine; liquid medicine containers to be handled in time, Can't throw it anywhere.

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