The use of smoking agents

Disinfection and sterilization Fumigation is performed before planting or 7-10 days before sowing. Generally, 0.75 grams of sulfur powder and 1.50 grams of dry sawdust are used per 100 cubic meters of shed space. Stir the two and divide them into several piles, and then put them separately in pots and place them evenly in the protected area. In the evening, the skylight and the shed film were sealed and the flower pots were placed in the shed. The cigarette lighter should begin to ignite the sulphur sawdust mixture from the end far away from the shed door, and walk toward the door as they click. After the smoke agent finishes, quickly retreat to the outside, close the shed door and fumigate for 1 night (not less than 6). Hours), release air in the morning on the second day to discharge harmful gases.

Disease and Insect Pest Control According to the object of prevention and control, select the fumigant and seal the film in the evening. In the greenhouse of greenhouses, the fumigant is divided into 4-7 piles. In the small arch shed, the anti-smoke fumigant is divided into 7-10 piles (each 1 acre area) and the smoke point is 30 cm away from the vegetable crops. (Fragrance or cigarettes) Light up the fumigant and retreat. After the smoking agent finishes, the cigarette lighter retreats to the shed, closes the shed door, and fumigates. The fumigation time is not less than 3 hours.

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