Plastic Film Vegetables Tomatoes Single Span Greenhouse

Single-span Greenhouse for Vegetables, Plastic Greenhouse, Low cost

Introduction

Plastic film greenhouses are mostly dome-shaped, and the roof and surrounding environment are covered with imported PEP composite long-life water-free film. The large span of this greenhouse and the spacious and bright rooms are well ventilated, providing greater space for indoor facilities and movement of people. The main structure is hot-dipped galvanized frame after assembly to ensure the overall corrosion resistance of the greenhouse frame. The main arch, concrete windowsills and columns are made of hot-dipped galvanized rectangular steel frames. The main arch of the open-plan room is hot-dipped galvanized. All fittings are bolted and a high flow sink is installed on top of the span column. Covering materials can be combined in a variety of ways. For example, the vertical surface around the greenhouse can be covered with hollow PC solar panels to enhance insulation and impact resistance. Other materials, such as float glass, can also be used to stubbornly demonstrate their effects and extend their life. The top plastic film can be single or double layer, providing more choices for users. The membrane can be used as a greenhouse for seedling production. It is used to grow flowers, vegetables and young plants. Covering materials are varied. The suitability of a greenhouse depends on its nature. It is suitable for different units and different climatic regions. That is to say, users can choose covering materials and supporting equipment according to their own economic strength and use, in order to achieve their respective use purposes.

How to extend the greenhouse lifespan

1.Film thickness

The thicker the film, the longer it will resist aging. The aging of PE materials is caused by ultraviolet light. Therefore, agricultural film with uv absorbent and UV stabilizer must be selected in the formula. Agricultural film with UV absorber ACTS ACTS as a black protective layer. Ultraviolet light is absorbed and converted into heat. Uv stabilizer can effectively prolong the aging time of agricultural film and even repair the damaged molecular structure.

2. Climate temperature

If the agricultural film is exposed to high temperature, especially the part in contact with the frame, it is easy to form hot spots. Agricultural film with a maximum temperature of 80 degrees Celsius will be particularly vulnerable to aging and damage. This is why the sun screen can not be directly covered on the outside of the film but directly covered on the outside of the film will accelerate the aging of the film. In addition, white plastic tape or cloth strips can be used to tie the frame to the place where the film comes into contact to prevent agricultural film from being damaged by high temperatures.

3. Chemicals

In particular, some pesticides and fungicides containing sulfur or chlorine can damage the quality stability of agricultural films. If sulfur is used for fumigation in greenhouse gases, it must be prevented from burning to produce sulfide. Because sulfide can shorten the service life of agricultural film seriously. When burning sulfur, care should be taken not to exceed 160 degrees Celsius to effectively prevent the formation of sulfur compounds.

4. Installation method

When agricultural film is not tightened, aging often occurs. When the wind comes, the agricultural film will continuously and rapidly hit the bone, thus damaging the agricultural film. Therefore, in the installation of agricultural film, the agricultural film must be evenly tensioned. If the outdoor temperature subsequently drops below 10 ° C, the agricultural film should be tightened again after a period of time as the temperature rises.