Chongqing Qing Cheng Agricultural Science And Technology Co., Ltd.
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Plastic Greenhouse Farming Equipment With Fog Machine
Introduction
Thin-film greenhouses are mostly dome-shaped, and the roof and surrounding environment are covered with imported PEP composite long-life water-free film. This type of greenhouse has a large span, spacious and bright rooms with good ventilation, providing greater space for indoor facilities and movement of people. The main structure adopts the hot-dipped galvanized framework after assembly, which can ensure the overall corrosion resistance of the greenhouse framework. The main arch, concrete windowsills and columns are made of hot-dipped galvanized rectangular steel frames. The main arch of the open room is hot-dipped galvanized. All fittings are bolted and connected and a high flow sink is installed on top of the span columns. 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-layer or double-layer, providing more choices for users. The film can be used as a greenhouse for seedling production. It is used to grow flowers, vegetables and young plants. The cover material is varied. The suitability of the greenhouse is determined by 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 radiation. Therefore, it is necessary to select agricultural film with UV absorbent and UV stabilizer in the formula. Agricultural film with uv absorbers 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 also the reason why the sunscreen net can not be directly covered on the outside of the membrane but directly covered on the outside of the membrane will accelerate the aging of the membrane. In addition, white plastic tape or cloth strips can be used to tie it to the place where the frame is in contact with the film to prevent the agricultural film from being damaged by high temperature.
3. Chemicals
In particular, some pesticides and fungicides containing sulfur or chlorine can destroy the stability of the quality of agricultural film. If sulfur is used for fumigation in greenhouse, it must be prevented from burning gases to produce sulfide. Because sulfide can shorten the service life of agricultural film seriously. When burning sulfur, care should be taken not to exceed the temperature of 160 degrees Celsius to effectively prevent the production of sulfur compounds.
4. Installation method
When the agricultural film is not tightened, aging often occurs. When the wind comes, the agricultural film will continuously and rapidly beat the skeleton, thus damaging the agricultural film. Therefore, in the installation of agricultural film, must be evenly strained agricultural film. If the outdoor temperature then falls below 10 degrees Celsius, the agricultural film should be tightened again after a period of time as the temperature rises.