Abstract:
If we speak and think about the development of plastic-film-greenhouses we have to consider:
- the construction,
- the film,
- the fastening of the film,
- the stretching of the film on the construction,
- the ventilation as part of the construction.
Existing plastic-film-greenhouses have some disadvantages.
But especially for vegetable growers glass-greenhouses become more and more too expensive and uneconomic.
For mediterranean areas and also for middle Europe we have to search for greenhouses, which are cheap enough and suitable for part-time production during winter in the south and during summer in the north.
These can be plastic-film-greenhouses.
But we have to overcome the existing disadvantages.
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