Aerosol agents offer significant advantages in improving pest and disease control within closed greenhouses. Unlike traditional spraying methods, aerosols are not affected by wind, rain, or light conditions, ensuring consistent and even distribution throughout the space. Their strong smoke penetration allows for thorough coverage, reaching all areas without leaving any dead zones. This results in long-lasting efficacy, effectively curing diseases and eliminating pests. According to field tests, the control effectiveness can reach up to 90%, with an efficiency that is approximately 20% higher than conventional sprayers.
In addition to effective pest control, aerosol use helps reduce greenhouse humidity. Since no water is required during application, this method lowers moisture levels, improving the microclimate and promoting healthier vegetable growth. It also saves labor, time, and energy, as it eliminates the need for manual spraying. Aerosols can be applied in the evening, avoiding interference with daytime farming activities, thus increasing overall efficiency. The short residue of pesticides makes it easier to produce pesticide-free vegetables, supporting sustainable agriculture.
The cost-effectiveness of aerosol agents is another key benefit. Using aerosols can reduce the cost per acre by about 2 yuan per spray, while simultaneously improving control efficiency, reducing disease incidence, and enhancing plant growth. This leads to a better return on investment and overall improved productivity.
**Technical Application Guidelines:**
Aerosol agents should be placed at multiple points inside the greenhouse to ensure even distribution. When igniting, start from the innermost part and move toward the door, then immediately close the greenhouse to maximize the effect of the smoke. The best time to apply aerosols is in the evening before the temperature drops, allowing the particles to settle more effectively and improve control outcomes.
During the growing season, regular monitoring of pest and disease occurrences is essential. Early prevention and treatment are crucial—diseases should be addressed at the onset, with applications spaced 7 to 10 days apart, repeated 3 to 4 times. For pests, early intervention is key to prevent large-scale infestations.
Before applying any agent, it's important to identify the specific pest or disease. For example, downy mildew, gray mold, and other fungal diseases can be controlled using 10% chlorothalonil or 15% carbendazim smoke agents, at a rate of 200–250 grams per mu. Powdery mildew can be treated with 15% Kefalin, at 250–300 grams per mu. Aphid control can be achieved with 22% dichlorvos or 300–350 grams of extermination smoke per mu.
To prevent resistance, it's recommended to alternate between two or three different smoke agents when controlling pests and diseases. This practice avoids over-reliance on a single type of agent. Safety is also a priority—avoid spraying near crops or flammable materials. After ignition, exit the greenhouse immediately, close it tightly, and ventilate before re-entering for daily operations.
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