Greenhouse peppers winter note reasonable ventilation
In winter, the temperature is low, the relative humidity in the greenhouse is high, and the temperature of the indoor air is up to 100% from the middle of the night to the morning. The surface of the greenhouse film collects a lot of drops of water and drops onto the leaves of the plants. The winter greenhouse roof can be easily ventilated to cause various diseases. happened. Therefore, reducing indoor humidity is essential for pepper production. Ventilation is the most effective way to reduce humidity.
Ventilation in winter is mainly by reducing the indoor humidity through the top wind, 2-3 times a day. Ventilation varies in different weather conditions. Ventilation starts when the temperature reaches 20°C in the sunny morning and in the afternoon when the temperature drops to around 20°C; ventilation takes place in the cloudy days on the premise of keeping warm; when the temperature in the morning is not lower than 13°C-15°C Ventilate for half an hour, ventilate for 1-2 hours at high temperatures at noon, and ventilate for about half an hour before capping for 1 hour. The rain and snow days are ventilated before and after 12 noon for half an hour.
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