As the temperature continues to decrease, the number of overcast days increases. In order not to affect the humidity in the greenhouse, the farmers often choose to use aerosols to control various diseases. And vegetable farmers need a certain amount of time (about 6-8 hours) when using aerosols. However, after many farmers have used aerosols, the disease has been controlled, which has also led to the occurrence of phytotoxicity.
In particular, it takes a long time to close the booth in the winter. Therefore, when using a drug booth, be cautious.
First, determine the appropriate amount.
When using aerosols, calculate the amount of use based on the size of your shed. The planting area is the same, and the space of the facilities with different heights has large differences in volume. The space volume should be accurately calculated, and then the dosage should be determined according to the size of the vegetable plant. For example, in the greenhouse with a height of 4 meters and an acreage of one acre, the amount of per acre is 500 grams. If the height of a shed is 4.5 meters, the amount can be increased to 530-550 grams.
Second, choose the right aerosol.
Each kind of aerosol has a specific use object and scope, and beyond this range, it may produce phytotoxicity. Therefore, before using aerosols, you should familiarize yourself with the characteristics and use them in strict accordance with the instructions. There are many pharmaceuticals, vegetables are more sensitive to them, if you do not choose to use it, it is very easy to cause injury.
In addition, early ventilation.
The time for smoking aerosols should not be too long. The normal time for smoking is usually 6-8 hours. The longer the time, the easier it will be. In particular, after entering the winter, the crickets are short and long, and the ignition of the aerosol immediately after the shed is put from the shed to the next day will cause the smoke to take a long time and cause phytotoxicity. After the smoked medicine is finished, it is timely ventilated to avoid the gas staying in the shed for a long time.
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