Greenhouse films play a pivotal role in modern agriculture
Greenhouse films play a pivotal role in modern agriculture, serving as one of the most widely used covering materials for greenhouse structures. Compared to glass and polycarbonate sheets, plastic films hold a dominant market share due to their affordability, ease of installation, and adaptability to various climatic conditions. Among the available options, EV film, PE film, and PO anti-drip film are the most common types, each offering distinct characteristics suitable for different greenhouse applications and planting needs.
EV film is typically the most economical choice. It is often used for seasonal structures such as spring-autumn tunnels, which are employed for short-term cultivation during transitional seasons. While EV film provides adequate performance for temporary use, its lifespan is relatively short, generally ranging from three to six months. Over time, it may yellow or lose transparency, which reduces light transmission. Nevertheless, for cost-sensitive, short-duration projects, EV film remains a practical option.
PE film, or polyethylene film, offers better durability and is commonly selected for solar greenhouses, also known as warm sheds, which are designed for off-season production during colder months. Standard PE film usually lasts one to two years and provides reliable performance under various weather conditions. It is available in different thicknesses and is relatively easy to install on curved or framed structures. However, traditional PE film may not include advanced features such as anti-drip properties, which can lead to condensation inside the greenhouse.
PO anti-drip film has gained significant popularity in recent years, especially for more permanent or demanding greenhouse setups. This film is engineered with a special coating that prevents water droplets from forming on the inner surface, thereby reducing moisture-related diseases and improving light diffusion. PO film generally offers superior light transmittance compared to EV and PE films of the same thickness. With a service life of three to five years, it is a preferred choice for solar greenhouses and film-covered multi-span greenhouses, where long-term performance and climate control are priorities.
The selection of film thickness is another important consideration. Common thicknesses include 0.08mm, 0.10mm, 0.12mm, and 0.14mm. Thinner films (such as 0.08mm or 0.10mm) are frequently used for seasonal tunnels and some solar greenhouses, while thicker films are chosen for multi-span structures or regions with harsh weather. It is worth noting that PO film often provides higher light clarity even at standard thicknesses, contributing to better crop growth conditions.
Installation complexity also varies with greenhouse design. Simple arch tunnels require straightforward film draping and securing with clamps or fasteners. Solar greenhouses involve attaching film to walls and roof arcs, which is moderately labor-intensive. In contrast, multi-span greenhouses demand more precise installation, often needing professional teams and more time to ensure airtight and durable coverage.
In summary, choosing the right greenhouse film depends on multiple factors: the type of structure, expected lifespan, local climate, budget, and specific cultivation requirements. While EV film suits short-term seasonal use, PE film offers a balance of cost and durability for intermediate applications. For long-term, high-performance greenhouse operations, especially those requiring reduced humidity and high light transmission, PO anti-drip film stands out as the optimal investment. Proper selection not only enhances crop yield and quality but also improves overall economic efficiency in modern agricultural production.
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