Abstract
Techniques and measurements of ultra-low-volume spraying with airplane are studied. From practice it shows that we can achieve good results of prevention and control of diseases and pests, if we take the following measures: The speed of flying is 160 km/h. The height of flying is 5 to 7m for plain and 15 to 20m for mountain area. The flashing point is over 70 °C. The sparying width is 60m. The size of fog drop is 80 to 120 μ. The density of fog drop is over 10 drops per cm2.
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