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How to extend the life of film in winter
Using greenhouses to grow vegetables in the winter, film is a big expense. Extending the service life of the greenhouse film has important implications for reducing costs and improving economic efficiency. In order to achieve this goal, the following should be done: First, prevent cracking. The materials used for scaffolding are mostly iron wire and aluminum wire. These hard and pointed materials are the most likely to poke the film. Therefore, the scaffolding material must be made to have a smooth surface, and the tip and the bamboo section should be flattened by clipping. Tie racks should be made of soft materials such as hemp ropes. Do not use hard materials such as iron wire or aluminum wire. Second, prevent disconnection. The greenhouse film is composed of a number of thin film membranes. If the patchwork is too narrow, the bonding area is small. When the force is applied, it will cause a gap. Therefore, when joining, increase the bonding area, increase the bonding strength, and avoid delamination during use. Third, wind blow. The book's light-bullet book film is most likely to be blown under the strong winds of the winter. After the book is masked, it should be immediately pressed with a laminating line. Generally, one lamination line is pulled every 1-1-2 scaffolds, and the elasticity of the lines should be moderate. In areas with frequent windy winds, simple windbreaks can be set up on the windward side to reduce wind damage. Fourth, anti-crushed. In snowy weather, the snow on the roof is too thick to break the film. Therefore, during the snowfall, attention should be paid to the inspection and snow cover should be promptly removed. Fifth, anti-aging. After the greenhouse production is completed, the membrane should be washed clean, dry, and well-coiled, placed in a ventilated, dry, dark place, which can delay aging and extend the service life. During the collection, we must guard against exposure, smoke, and fire.