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公开(公告)号:US3889416A
公开(公告)日:1975-06-17
申请号:US42338673
申请日:1973-12-10
申请人: BERGERON DUNCAN G , LEACH RAY E
发明人: BERGERON DUNCAN G , LEACH RAY E
摘要: Seedling tree growing apparatus for use particularly in growing seedling reforestation trees comprises in combination a support tray and a plurality of tubes adapted to be supported vertically in the tray. The tubes are open at both ends and provided with inwardly extending longitudinal ribs which guide the roots of the seedling trees contained therein out the open, lower end of the tubes for air pruning.
摘要翻译: 用于特别是种植幼苗再造林的幼苗生长装置包括支撑托盘和多个适于垂直支撑在托盘中的管子的组合。 管在两端开口并且设置有向内延伸的纵向肋,其将包含在其中的幼苗的根部引导出用于空气修剪的管的开放的下端。