| 摘要 |
FIELD: agriculture. SUBSTANCE: hothouse has heat- insulating base 1 with cover 3 which prevents root soil layer from overcooling at night and overheating during daytime. In the morning moisture from soil is condensed under base 1 to wet soil and be assimilated by plant. Rotary light-permeable hood 2 with light-impermeable sector 5 provides maximum intensity of illumination or shading for individual plant. Ventilation is conducted through openings 7 in hood 2, central opening 4 in cover 3 and vent openings 6 in base 1. Air circulation through these openings is provided by pressure difference of more dense air below hood 2, which has become less dense due to condensation of moisture from air under cover 3. EFFECT: increased efficiency in growing individual plants and provision for adequate growing conditions. |
