Agricultural greenhouse

The present invention addresses the problem of providing: a film for agricultural greenhouses, which is capable of maintaining the CO2 concentration required for photosynthesis of plants without ventilation; and an agricultural greenhouse which uses the film for agricultural greenhouses. The film for agricultural greenhouses according to the present invention is a cellulose film which contains a cellulose acylate resin, has an equilibrium moisture content of 4-8% at 25 DEG C and a relative humidity of 80%, and has a thickness of 60-200 [mu]m. 本发明的课题在于提供一种即使不进行通风也能够维持植物的光合作用所需的CO2浓度的农业大棚用薄膜及使用该农业大棚用薄膜的农业大棚。本发明的农业大棚用薄膜为纤维素薄膜，所述纤维素薄膜含有纤维素酰化物树脂，在25℃、相对湿度80％下的平衡含水率为4～8％，且厚度为60～200μm。