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我站于1981～1982年进行了两期针阔叶树塑料大、中棚育苗试验,已初步取得成果。大、中棚为钢筋混凝土立柱,竹架式单栋塑料薄膜棚,棚顶坡度为2％,大棚长52米,宽13米,总覆盖面积为676平方米;中棚棚长23米,宽13米,覆盖面积为299平方米。大、中棚最高处2米,最低处1米。棚为南北走向,两头各设一门;东西两侧和棚顶开设若干通风窗口,以利调温。棚外西、北两面,距棚2米处设防风墙一道。
From 1981 to 1982, I conducted two large and medium shed nursery trials of coniferous and broad-leaved trees, and achieved preliminary results. Large, the shed for the reinforced concrete columns, bamboo frame single plastic film shed, shed slope of 2%, 52 meters long greenhouse, 13 meters wide, with a total area of 676 square meters; shed shed 23 meters long, wide 13 meters, covering an area of 299 square meters. Large, 2 meters in the ceiling, the lowest office 1 meter. Shed for the north-south direction, each set a door; east and west sides and the roof to open a number of ventilation windows to facilitate temperature control. Outside the shed west and north on both sides, located 2 meters away from the shed with a wind wall.