Greenhouses can grow flowers, not flowers. In the northern region, due to a period of low temperature weather, some flowers are difficult to cross the winter safely indoors and outdoors, so they need to be kept in a greenhouse. In terms of temperature, it can ensure that it can survive the winter safely. It is made of transparent materials and can also absorb sunlight without hindering its growth. However, greenhouse flowers are not all advantages, but also have disadvantages.
1. Poor ventilation: the greenhouse is covered with a layer of plastic film or glass, resulting in the increase of humidity, poor ventilation conditions, and the plants growing in it are difficult to contact the fresh air.
2. Occurrence of air damage: flowers in greenhouse grow in a closed environment for a long time, which are easy to suffer from harmful gases. The common ones are ammonia, sulfur dioxide, nitrous acid, carbon monoxide, etc., which will lead to poor growth and development of plants. In serious cases, they may wither and die after a period of time. If it is raised in the shed, we must pay attention to the prevention and occurrence of harmful gases.
3. Disease prone: the long-term ventilation is not good, but also easy to infect the disease, causing problems in the leaves and stems.
