The ventilation of multi-span film greenhouses primarily aims to fully utilize natural conditions. Therefore, before constructing the greenhouse, users should understand the local natural conditions, including the average annual wind direction in the area. The conditions provided by the natural conditions are of great reference value for the design of the building windows. Besides the direction of the skylight, another factor affecting ventilation is the shape of the greenhouse.

Greenhouses are insulated structures that provide growing conditions and increase yields during seasons unsuitable for plant growth. Primarily used for cultivating or propagating vegetables, flowers, trees, and other plants in cold seasons.

Proper Management of Multi-span Film Greenhouses

1. Timely Removal of Film. After the autumn vegetable planting is completed, remove the greenhouse film promptly to cool down. Some farmers have already replaced the new film before planting autumn tea vegetables. At this point, the cost of setting up a movie is inadvertently not worth it.

2. Apply Fertilizer and Turn the Soil Quickly. It is recommended that vegetable farmers apply fertilizer to the soil as soon as possible. After a period of maturation, it can convert into nutrients that are directly absorbed and utilized by the crops. It also addresses the side effects of fertilizer, preventing root burning, gas damage, and other issues.

3. Clear the greenhouse. It is recommended to clean the greenhouse promptly after the autumn tea and vegetables have been consumed.

In fact, the shape of greenhouses not only affects their aesthetics but also has a significant impact on ventilation efficiency. Typically, most greenhouses are designed with large, curved arcs, which still maintain a pleasing aesthetic. The key is to enhance indoor ventilation. The principle is that the large curved surface design allows outdoor air to form adherent airflow lines near the roof, creating a vortex area as it passes through the skylights, thereby increasing the air pressure difference between the inside and outside of the greenhouse, benefiting cross-ventilation.