Planting greenhouse vegetables, aerosols are indispensable, compared to spray, dusting, the advantages of aerosols are very obvious, but the use of greenhouse aerosols is also a way to do it, otherwise it is easy to produce phytotoxicity problems, followed by Xiaobian Let's get to know it.
The correct use of greenhouse aerosols:
To be the right medicine
The performance of various aerosols is different, and its control objects are also different. For the prevention and treatment of tomato and cucumber leaf mold in greenhouse, you can use serotonin aerosol; when controlling greenhouse downy mildew, blight, tomato early blight, late blight, you can use chlorothalonil aerosol for prevention and treatment.
To master the appropriate medication
In general, medications have the greatest effect in the early stages of the occurrence of pests and diseases. If you use the killing melon smoke agent No. 1 to control aphids, when the amount of aphids is small, 250 to 300 grams per acre can be used.
To master the right amount of medication
Under normal circumstances, 30% chlorothalonil aerosol, 10% serotonin aerosol is used in a single dose of 0.3 to 0.4 grams per cubic meter, equivalent to 300 to 400 grams of aerosol per acre. If the pests are severe or the greenhouse is poorly enclosed, the dosage can be appropriately increased.
To master the time of medication
Generally, it is better to ignite the grass curtain in the evening, and it is best to ignite the aerosol in the cloudy and snowy evening.
There are three aspects to be aware of when using greenhouse aerosols:
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.
usage 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.
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.
To use greenhouse aerosols, be sure to avoid the problem of phytotoxicity. Be sure to pay attention to ventilation after spraying. If you want to know more about pesticides, please pay attention to China Pesticide Network.
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