Composition and Features of Film Greenhouses:

Multi-span film greenhouses primarily use film as the covering material. A complete multi-span film greenhouse mainly includes the greenhouse civil foundation, the main hot-dip galvanized steel structure, the external shading hot-dip galvanized steel structure, covering materials, external shading systems, internal insulation systems, wet curtain-fan cooling systems, indoor lighting systems, top and side roll-up window systems, sprinkler systems, electrical distribution systems, drainage systems, etc. Multi-span film greenhouses employ hot-dip galvanized steel frames, with double-layer high-insulation, long-life, non-drip plastic film used on the top and sides. This represents a simple form of energy-saving insulation in greenhouses, offering excellent thermal insulation performance and ease of operation. The sides can also be made of domestic polycarbonate panels, which are lightweight, high-strength, and easy to transport and install. They are suitable for flower cultivation, seedling propagation, flower markets, scientific research, teaching, and more.

Multi-span film greenhouses offer significant energy-saving effects (typically around 40% energy savings, with high-efficiency rates reaching 57%), simple structure, and low cost. Natural ventilation, forced ventilation, wet curtain cooling, and shading systems ensure optimal ventilation conditions in the greenhouse, effectively reducing indoor temperatures in summer and meeting the needs of year-round production. Relying on the greenhouse computer environmental information collection and automation system, indoor and outdoor environmental parameters are collected, displayed, and stored in real time, enabling real-time automatic control of the indoor environment.

The structure is simple, installation is convenient, automation is high, and it is economical and practical. The multi-span design provides ample space within the greenhouse and high land utilization per unit area.