It is understood that long-term high temperature greenhouse can reduce the service life of greenhouse film. If the greenhouse film is filled for more than a month in the summer high temperature season, the greenhouse film will be seriously aged: low light transmittance, poor heat insulation, and easy to damage.

Therefore, the high temperature in summer should not be too long, generally 15-20 days is appropriate. Do not replace the special greenhouse film for vegetables before the greenhouse is closed. When the next crop of vegetables is planted after the greenhouse, replace the new film, which can slow down the aging of the greenhouse film and achieve good light transmittance and dripping water of the greenhouse film in winter. service life.

2. Strictly reduce the scalding of greenhouse steel pipes

At present, the main skeleton of the greenhouse is mostly replaced by steel pipes. In summer, the temperature of the steel pipe under direct light is very high, and it is easy to burn out the special greenhouse film for vegetables in the greenhouse.

Therefore, the protective layer needs to be wrapped around the frame of the greenhouse, on the steel pipe. Choice of film or rag wrap. One is to reduce stab wounds on the wire scraping film and frame. The second is to reduce the high temperature ironing of the steel pipe to the film in summer and shorten the service life.

3. Reduce the contact between EVA film and PVC film

It is unreasonable for most vegetable growers to not clean the plastic film from the two hillsides when replacing the new plastic film. If the PVC film is used in the greenhouse in the previous season and the EVA film is used in the next season, the contact between the two greenhouse films can easily accelerate the aging speed of the EVA greenhouse film and cause great harm.

4. Use less harsh pesticides to spray or fumigate the greenhouse

Many pesticides will destroy the plastic film after being used in the greenhouse. Some pesticides and fungicides containing sulfur or chlorine will destroy the stability of the plastic film.

When spraying pesticides, it is necessary to pay attention not to spray pesticides on agricultural films, and to reduce the use of sulfur preparations when fumigating the greenhouse, and arrange the fumigation time reasonably. If the greenhouse is fumigated with sulfur, the life of the greenhouse film will be greatly affected. When fumigated frequently, the aging speed of the special greenhouse film for vegetables will be greatly accelerated.