Smoke using the methods and precautions: disease prevention should begin in the early stages Tobacco use herbicide manufacturers, generally every 7-10 days 1, 2 or 3 times in a row, early control. Greenhouse serious pest or herbicide poor sealing at wholesale tobacco fields, may be appropriate to increase or decrease drug administration interval. Smoke pesticide during storage should pay attention to fire safety and prevention of spontaneous combustion. Smoke point release method should be noted: the smoke made of a sheet or block is also a very convenient usage, but do not smoke when using sheets or smoke blocks directly on the ground Tobacco herbicide manufacturer, should The smoke slices on top of a wire stent, about 30 cm from the ground. This divergence can be completely smoke into the air, and the further spread of diffuse.