The use of handheld ultra-low sprayer
2019-10-18 13:05:19
Hand-held ultra-low volume sprayer saves water, saves medicine, and has high work efficiency. The machine is easy to operate and can be used by more than one machine. It is welcomed by customers. However, the use of the aircraft is technically strong. If it is used improperly, it will affect the control effect of crop pests and diseases. So, how to use the handheld ultra-low sprayer correctly?
First, choose the right spray method. The sprayer can be used for both ultra-low spray and low-volume spray. However, the two spray methods have different requirements for pesticide formulations and application liquid volumes. In the case of ultra-low spraying, the use of oil pesticides is required, spraying the original solution or diluting only a few times, spraying less than 0.3 liters per acre, and the droplet diameter being 60-90 microns. For low-volume spraying, use emulsion pesticides and dilute them several tens to hundreds of times with water, 0.3-3.0 liters per acre of spray, and 100-150 microns in droplet diameter.
Second, choose the appropriate wind speed, direction and temperature. When the hand-held ultra-low sprayer sprays, the droplets are finer, and if there is no wind operation, the fog droplets have poor penetration between the rows of crops, and the spraying effect is also poor; if the wind is too large, the droplets will drift with the wind, Can't settle to the desired position. Therefore, if there is no wind or wind operation, it will affect the control effect. Generally, the effect of spraying is better when the wind is at 2-3 levels. The direction of the operator's walking should be as vertical as possible to the direction of the wind, and the nozzle should be in the downwind position so that the pesticide droplets can drift away from the operator. In addition, the operating temperature should not be too high, the temperature is too high will make the tiny droplets accelerate the volatilization, reducing the control effect.
Third, master the nozzle height. When the wind speed is large, the nozzle height should be low from the crop. When the oil pesticide is used for ultra-low spraying, the height of the nozzle from the crop is generally 0.8-1.2 meters; when the emulsion pesticide is used for low-solubility spraying, the height of the nozzle from the crop is about 0.5 meters; the targeted spray is used to prevent crops In the case of pests on the back and middle and lower parts, the nozzles must be inserted into the rows of crops.
Fourth, choose pesticide and pesticide dosage. To improve the effect of controlling pests and diseases, the systemic pesticides and stomach poison pesticides should be selected, and the two pesticides should be mixed and used. When using low-dose spray, the dosage of pesticide is: at least 500 ml per acre, up to 5000 ml, generally 2000 ml can be used to obtain better control effect.
First, choose the right spray method. The sprayer can be used for both ultra-low spray and low-volume spray. However, the two spray methods have different requirements for pesticide formulations and application liquid volumes. In the case of ultra-low spraying, the use of oil pesticides is required, spraying the original solution or diluting only a few times, spraying less than 0.3 liters per acre, and the droplet diameter being 60-90 microns. For low-volume spraying, use emulsion pesticides and dilute them several tens to hundreds of times with water, 0.3-3.0 liters per acre of spray, and 100-150 microns in droplet diameter.
Second, choose the appropriate wind speed, direction and temperature. When the hand-held ultra-low sprayer sprays, the droplets are finer, and if there is no wind operation, the fog droplets have poor penetration between the rows of crops, and the spraying effect is also poor; if the wind is too large, the droplets will drift with the wind, Can't settle to the desired position. Therefore, if there is no wind or wind operation, it will affect the control effect. Generally, the effect of spraying is better when the wind is at 2-3 levels. The direction of the operator's walking should be as vertical as possible to the direction of the wind, and the nozzle should be in the downwind position so that the pesticide droplets can drift away from the operator. In addition, the operating temperature should not be too high, the temperature is too high will make the tiny droplets accelerate the volatilization, reducing the control effect.
Third, master the nozzle height. When the wind speed is large, the nozzle height should be low from the crop. When the oil pesticide is used for ultra-low spraying, the height of the nozzle from the crop is generally 0.8-1.2 meters; when the emulsion pesticide is used for low-solubility spraying, the height of the nozzle from the crop is about 0.5 meters; the targeted spray is used to prevent crops In the case of pests on the back and middle and lower parts, the nozzles must be inserted into the rows of crops.
Fourth, choose pesticide and pesticide dosage. To improve the effect of controlling pests and diseases, the systemic pesticides and stomach poison pesticides should be selected, and the two pesticides should be mixed and used. When using low-dose spray, the dosage of pesticide is: at least 500 ml per acre, up to 5000 ml, generally 2000 ml can be used to obtain better control effect.
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