Distribution of Pesticide by Different Vaporizers in Tobacco Field

[Objective] The pesticide effective utilization rate and the spraying efficiency of four sprayers with different spray nozzles were compared.[Method] Using the fancy red as the pesticide spray tracer,the field spray droplet size,spraying efficiency,leaf deposition of pesticides recoveries and droplet field uniformity of the distribution of four sprayers with different spray nozzles were analyzed.[Result] The utilization rate of pesticide showed as electric sprayer motor sprayer hand sprayer manual mist sprayer;the spraying efficiency showed as motor sprayer electric sprayer manual mist sprayer hand sprayer;the electric sprayer had the best droplet field uniformity of pesticide,while the others were poorer.[Conclusion] The research provides theoretical basis for the popularization and application of new plant protection machines.