Fufeng Sinuote Biotechnology Co.,Ltd. , https://www.sinuotebio.com
Plastic film maintenance method
In greenhouses, when cultivating flowers and vegetables, a common issue arises due to the temperature difference between the inside and outside. This leads to the formation of water droplets on the inner surface of the regular plastic film used for covering. Even without special anti-drip films, water droplets can still form over time. These droplets significantly reduce the transparency of the film, lower the internal temperature, and may even lead to plant diseases when they fall onto crops. According to measurements, the presence of water droplets on the greenhouse film can decrease light transmission by 20% to 30%.
If you can't purchase a special anti-drip solution, there are simple methods you can try at home. For example, mix 7.5 to 10 grams of finely ground soybean powder with 150 milliliters of water, let it soak for two hours, then filter through fine gauze. Once filtered, spray the solution evenly inside the greenhouse using a sprayer. This method helps the water droplets fall off quickly and prevents new ones from forming for about 15 to 20 days. It's an easy, cost-effective, and safe approach that won’t harm your crops.
When it comes to repairing damaged film, several temporary methods can be used. For small holes, you can use water compensation: clean the area, cut a piece of film slightly larger than the hole, place a thin layer of water over the damage, and press the two layers together to remove air bubbles. For minor tears, dampen a piece of paper and stick it over the damaged spot—it can last up to 10 days. Another option is to make a paste using white flour, water, and brown sugar (about one-third the weight of the dry flour), heat it slightly, and use it to patch the film.
For larger or thicker film damage, you can cover the hole with another piece of similar film and secure it with a thin thread. If the film is being removed, you can also repair it by heating: clean the damaged area, cover it with a slightly larger piece of film, then place 2-3 layers of newspaper over it. Gently iron along the edges until the film melts and sticks together once cooled. Alternatively, use a special adhesive, apply it around the hole with a brush, wait 3-5 minutes, then press a matching film piece onto the area and let it dry.
To store the film properly before use, first wash and dry it thoroughly. Then fold it and wrap it in old film to protect it. Choose a location with moderate soil moisture and dig a small pit. Place the wrapped film inside and cover it with soil, making sure the top of the film is at least 30 cm below the ground. This method helps prevent the film from aging or becoming brittle, thus extending its lifespan and maintaining its quality for future use.