In plant cultivation, it is common in many cases to grow certain crops under film covers, in greenhouses (100), or under other roofings (200). Depending on the climate zone and crop, this can be used for example to supply heat by retaining the sunlight or by means of additional heating. The invention relates to a plant cultivation roofing (10) made of film material or plate material having temperature-dependent radiation transparency, wherein a plastic layer in or on a plate or at least one film layer having temperature-dependent radiation transparency provides a gradual or a two-step or multi-step transparency reduction for rising temperatures in a temperature range from 20° C.
