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Results in air-supported plastic greenhouses with spring vegetable crops

, : Results in air-supported plastic greenhouses with spring vegetable crops. Acta Horticulturae (42): 63-77

Three air-supported plastic greenhouses each with an area of 190 m2 were used. One, in 1971, was made of polyethylene film, and two, in 1972, were made of PVC and polyethylene film, respectively. The greenhouse was kept erect by means of a centrifugal fan of 220 w (870 m3/h), placed at one end of it, which effected 2 changes of air volume/h. Ventilation was by a helicoidal fan of 1 kw and a capacity of 2000 m3/ha, capable of 20 air changes/h.

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