temperature

Because the temperature in winter is very low, we should first pay attention to the temperature when ventilating the greenhouse. When ventilating, we should observe the temperature in the greenhouse. If the temperature in the greenhouse is higher than the appropriate temperature range for growing vegetables, we can ventilate. After ventilation, the temperature in the greenhouse will be too low due to cold wind, causing freezing damage to vegetables and affecting the normal growth of vegetables. Therefore, during ventilation, we must fully understand the growth habits of crops and the temperature requirements of each growth stage of crops, and do a good job in ventilation.

Ventilation volume

In winter, the principle of ventilation from small to large and from small to large should be adopted. We should pay attention to the temperature difference in all parts of the greenhouse. In local high-temperature areas, ventilation shall be properly carried out in advance and the vent shall be expanded. On the contrary, places with low temperature should be properly ventilated. At the end of ventilation work, the principle of starting ventilation shall be violated. In terms of ventilation, it is necessary to prevent cold air from blowing directly to the plant, so that the plant can grow in high and low temperature environment, resulting in various adverse conditions such as freezing injury of vegetables, affecting normal growth and reducing yield.

Ventilation time

Then we need to pay attention to the ventilation time. Ventilation should be carried out when the temperature in the greenhouse is high, the proportion of humidity is large and the photosynthetic capacity of crops is strong. Then, after watering and fertilizing the vegetables or spraying chemicals, the humidity in the greenhouse will rise, so we should also pay attention to short-term ventilation. If it is cloudy for a long time and suddenly sunny, some covers outside the greenhouse should be properly opened. Reduce the ventilation volume to prevent the light from suddenly becoming stronger, resulting in accelerated evaporation of water, resulting in adverse phenomena such as water loss and wilting of vegetables.

The above is a brief introduction to the precautions for greenhouse ventilation in winter. The ventilation of greenhouse in winter is very necessary, but we should pay more attention to ventilation and not blindly. Especially on the premise of ensuring the temperature, ensure that vegetables can survive the winter safely. This article is for your reference only. I hope it will be helpful to you today. Our company specializes in the production and operation of greenhouse pipes, green house pipe and galvanized greenhouse pipes. Focus on quality and face the world. Welcome to consult.