Proper use of pesticide sprayers

With the development of high-efficiency pesticides and high-efficiency spray equipment, pesticide application technology is also changing. The main trend is to reduce the amount of liquid per unit area. For example, the ground spray is reduced from 50 kg per mu (constant spray) to per mu. 1-10 kg (low-volume spray) and 0.5 kg per acre (ultra-low volume spray), with the drastic reduction of spray volume, the spray ergonomics has been significantly improved.

Spray Method Manual sprayer Low-volume spray method is very simple, just replace the conventional knapsack sprayer with a low-pressure spray head. The low-profile nozzle piece is made of stainless steel, and its specifications are 0.6-0.7 mm in diameter and 250 ml per minute. The difference between the low-volume spray and the constant spray is that the spray is fine and uniform. It is a drifting spray. The volume of the spray is 1-10 kg. The liquid evenly covers the crop but does not lose. The spray walking speed is generally 1 meter per second.

Spray effect manual sprayer low-volume spray, its effective spray width is 1.5-2 meters, if the spray volume per acre 2-3 kg per acre takes 8-12 minutes, 30-40 acres per person per day, ergonomic constant The spray is increased by more than 10 times, but the labor intensity is greatly reduced, and the control effect is equivalent to that of the constant spray.

When the spray point is sprayed, the nozzle is 0.5-1 m from the top of the crop. In the case of 1-3 wind, the spray hole is consistent with the wind direction, and the spray bar is swung once every step to ensure uniform density of the spray droplets in the effective spray width. The relationship between spray volume and spray speed should be mastered. Generally, the spray volume is 2-3 kg, the walking speed is 1 m/s; the spray volume is 3-4 kg, and the walking speed is 0.6-0.7 m/sec; The amount of liquid sprayed is 4-5 kg, and the walking speed is 0.4 m/s.