Friends who have used greenhouse aerosols know that the effect of greenhouse aerosols is significantly better than spray, dusting, etc., especially in the rainy days, the effect is better, but improper use is easy to prevent or damage the vegetables, usually In order to prevent the following:
1. The solar greenhouse must be kept tightly closed. Prevent smoke from leaking through the cracks and reduce the efficacy. When the plastic film is seriously damaged, it should be carefully repaired before use, and consider increasing the dosage, or using other methods to prevent it.
2. Fire and moisture. Aerosols are flammable and are packed in paper or plastic film on the outside. They should be protected from fire and moisture during storage. Moisturizing aerosols should not be fired or exposed to the sun. They should be air-dried in a cool, ventilated place.
3. Do not dilute or use when other dosage forms. All compounding or styling aerosols are only suitable for fumes, not diluted or used in other dosage forms.
4. The dosage should be reasonable. The dose of aerosol used should be determined by the diffuse volume of the smog, ie the size of the solar greenhouse. Because the height of the solar greenhouse is mostly different, the actual production is often calculated according to the area of ​​the solar greenhouse. Under normal circumstances, the solar greenhouse with an area of ​​1 mu is used in an amount of 200-400 grams per aerosol.
5. After the walkway is distributed more. The use of aerosols in the solar greenhouse should be placed on the rear aisle of the north wall in the greenhouse. The aerosol should not be placed close to the vegetables, and should not be placed at the front and the line to avoid phytotoxicity. In a solar greenhouse with an area of ​​1 mu, the aerosol is evenly distributed at least 4-5 points in the rear aisle.
6. Use time. Because the aerosol has the characteristics of refusing heat during the deposition process, for example, under sunlight, the surface temperature of the fruits and leaves of the vegetables is generally higher than the temperature of the adjacent air, and the aerosol particles in the air are difficult to deposit on the surface of the vegetables, affecting the smoke. Agent control effect. Therefore, the use of aerosols is best done after sunset in the evening and before sunrise in the morning.
7. How to use it. First, the greenhouse is sealed. After the aerosol is evenly placed in the rear aisle, it is ignited one by one from the inside to the outside. After the ignition, the open flame is blown off, so that it is normally smoked and closed in the greenhouse overnight.
8. Repeated use is good. The use of aerosols to control greenhouse vegetable pests and diseases, usually smoked once every 5-7 days, even smoked 2-3 times. Especially in the control of pests. For example, the use of sputum aerosol to control greenhouse whitefly, because it has a good effect on the control of whitefly mites, and the effect on nymphs is poor, so after smoking once, every 5-7 days, until the nymph hatching becomes adult and then smoked Once, the control effect can reach more than 95%.
9. Cooperate with other prevention methods. Since the current aerosol type is relatively small compared to the wettable powder type, it can be used alone in production, but it may be better to use it alternately with the spray method or the dust method.
10. Pay attention to personal safety. The aerosol has a harmful and irritating effect on the eyes, eyes and respiratory system of the person. After ignition, the person must leave the scene immediately and cannot stay. After the morning ventilation, normal agricultural operations were carried out to prevent poisoning.
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