Tunnel Greenhouse

Tunnel Greenhouse, also known as polytunnel greenhouse, is a classic, cost-effective and widely used agricultural planting facility for seasonal and year-round crop production. Featuring a simple arched tunnel structure, flexible layout and easy installation, it has become the preferred greenhouse type for small and medium-sized farms, commercial growers and agricultural projects worldwide. Different from complex multi-span greenhouses and passive solar warm houses, the tunnel greenhouse focuses on lightweight structure, high flexibility and low investment, providing an ideal protected growing environment for vegetables, flowers, seedlings and fruits in temperate and subtropical regions.

The entire tunnel greenhouse adopts hot-dip galvanized steel pipe frame with professional anti-rust and anti-corrosion treatment. The high-quality steel skeleton effectively resists oxidation, moisture and ultraviolet aging, ensuring a service life of more than 10 to 15 years. The streamlined arched structure scientifically disperses wind pressure and snow pressure, delivering stable windproof and snow-resistant performance under normal natural weather conditions. The overall structure is lightweight but firm, easy to assemble, disassemble and transport, which greatly reduces construction cycle and engineering costs. Customizable span, height and length allow flexible matching with different land areas and planting scales.

The tunnel roof is covered with high-performance agricultural PE or PO film with excellent light transmittance, anti-fog, anti-drip and UV-protection functions. The transparent covering maximizes natural sunlight penetration and ensures uniform light distribution inside the tunnel, promoting efficient photosynthesis and healthy crop growth. The anti-condensation design effectively avoids water droplet dripping, reduces indoor humidity accumulation, and greatly lowers the occurrence of fungal diseases and leaf rot. In addition, the anti-aging film can resist long-term sun exposure and temperature changes, maintaining stable physical performance throughout the planting seasons.

Tunnel greenhouses support diverse environmental control systems to adapt to different seasonal planting demands. Electric or manual rolling ventilation systems are installed on the side walls and top arches to realize natural air circulation, effectively adjusting indoor temperature, humidity and carbon dioxide concentration. In hot summer periods, external sunshade nets can be equipped to reduce internal temperature and prevent crop high-temperature damage. Drip irrigation and sprinkler irrigation systems achieve uniform water supply and water-saving planting, while water and fertilizer integrated equipment realizes precise fertilization management. For areas with low night temperature, users can add thermal screens or simple heating devices to extend the planting cycle.

One of the greatest advantages of tunnel greenhouses is their extremely high cost performance. Compared with multi-span intelligent greenhouses, tunnel greenhouses require lower initial investment, simpler maintenance and lower replacement costs. The open and smooth internal space is suitable for manual management and small mechanical operations, meeting the needs of both family farms and large-scale commercial planting. The flexible tunnel structure can be used for seasonal cultivation, seedling raising, rain-proof planting and sun-shading protection, effectively avoiding the impact of extreme weather such as heavy rain, strong sunlight and wind.

Widely applicable for leafy vegetables, solanaceous fruits, melons, strawberries, potted flowers and nursery seedlings, the tunnel greenhouse is a versatile and reliable agricultural facility. With simple structure, stable performance and strong practicability, it helps growers achieve earlier harvest, delayed production and stable yield, greatly improving economic benefits. Customized sizes and supporting configurations are available to meet different climate conditions and crop planting requirements, making it one of the most popular universal greenhouses in global modern agriculture.