公开(公告)号：WO2023091006A1

公开(公告)日：2023-05-25

申请号：PCT/NL2022/050652

申请日：2022-11-15

申请人： BELUA BEHEER B.V.

发明人： VAN NIEUWENHUIJZEN, Arjan ,  VAN DER SANDE, Johannes Adrianus Hendricus Maria ,  KOVACEVIC, Jack Anthony

IPC分类号： A01G9/22

摘要： A greenhouse (1,40) comprises an upper screen member (20, 45) and a lower screen member (30,46). One or both of the screen members can be a diffusely transmitting screen member that is of substantial uniform light transmission across the screen or a screen member that comprises alternating strips of relatively low light transmission and relatively high light transmission. The upper screen member can be placed over the growing space (7,41) in a stationary position while the lower screen member is moved across the growing space (7,41) depending on the position of the sun, such that at a distance D3 of at least 1.5m, preferably at least 1 m from the lower screen member (30,46), the light intensity in the growing space (7,41) varies no more than 35 % from the average light intensity that is measured when going from a first side of the support area to the opposite side, preferably no more than 25%, more preferably no more than 20%, most preferably no more than 20% in the time between 1 hour before noon and 3 hours past noon.