Techniques and measurements of ultra-low-volume spraving with airplane are studied. From practice it shows tha we can achieve good results of prevention and control of diseases and pests, if we take the following meas...Techniques and measurements of ultra-low-volume spraving with airplane are studied. From practice it shows tha 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℃. The sparying width is 60m. The size of fog drop is 80 to 120μ. The density of fog drop is over 10 drops per cm2.展开更多
文摘Techniques and measurements of ultra-low-volume spraving with airplane are studied. From practice it shows tha 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℃. The sparying width is 60m. The size of fog drop is 80 to 120μ. The density of fog drop is over 10 drops per cm2.
