When choosing a film for a greenhouse, multiple factors need to be considered, including the material, performance, price, service life, and crop demand of the film. Here are some common types of greenhouse films and their characteristics for your reference:
1. * * Polyethylene (PE) film * *:
-Advantages: Lightweight, soft, easy to shape, good transparency, non-toxic, it is the main variety of greenhouse film in China. The anti-aging performance of PE film is good, with continuous coverage of two strands, its service life can be extended by more than twice. In addition, the transparency and insulation properties of PE film are also good, suitable for the planting needs of various crops.
-Price: Moderate, high cost-effectiveness.
-Application scope: Widely applicable to large, medium, and small sheds.
2. * * Polyvinyl chloride (PVC) film * *:
-Advantages: Strong durability, good transparency, and a certain degree of cold and heat resistance.
-Disadvantages: The aging rate is fast and requires frequent replacement.
-Price: Relatively cheap, suitable for small-scale planting.
3. Ethylene vinyl acetate copolymer (EVA) film:
-Advantages: Better transparency, strong UV resistance, and better insulation effect than PE and PVC. EVA film is soft and durable.
-Disadvantage: The price is relatively high.
-Application scope: Suitable for planting high-end crops.
4. * * Polyolefin (PO) film * *:
-Advantages: The film types that have emerged in recent years have first-class transparency, insulation, and anti drip effects. Extremely durable, usually used for several years without any problem.
-Disadvantage: The price is relatively high.
-Application scope: Suitable for planting crops with high temperature and humidity requirements.
5. * * Double layer film * *:
-Advantages: A layer of gas is sandwiched between two layers of PE film, which has a particularly good insulation effect.
-Disadvantages: Complex construction and high cost.
-Application scope: Suitable for planting crops with high insulation requirements in winter.
When choosing greenhouse film, you can consider the following factors comprehensively:
*Crop demand: Different crops have different requirements for temperature, humidity, light, and other conditions, so it is necessary to choose the appropriate film based on crop characteristics.
** * Climate conditions * *: Consider local climate conditions such as temperature, humidity, lighting, etc., and choose films with corresponding properties.
** * Economic Strength * *: Consider your economic strength and choose films with high cost-effectiveness.
*Planting scale: Large scale greenhouses can choose double-layer film or PO film to improve insulation effect and reduce energy consumption; Small scale greenhouses can choose PE or PVC film to reduce investment costs.
** * Service life and maintenance cost * *: Considering the service life and maintenance cost of the film, choose a durable and low-cost film type.
In short, when choosing greenhouse film, multiple factors need to be considered comprehensively to select the most suitable film type for your needs.