【摘要】 <正> 红松人工更新的幼年处在什么样的光照条件下比较合适,对这个问题曾有过不少作者(1—7)做了探讨。尽管观点上尚不尽相同,但绝大多数认识基本是一致的,即庇荫条件对红松人工更新幼年的生长与存活是有好处的。本文的目的主要在探讨庇荫条件下的光照特点和找出与红松幼年生长关系密切的那些光照特点,从而为红松的人工更新提供依据。更多还原

【Abstract】 In this paper, the growth and survival of planted Korean pine seedlings under the shade by forest wall and by forest canopy are stated. On the base of investigation during 2 years of light characteristics under shade conditions and of the growth, biomass commulation and survival percent of planted seedlings, they were closely dependent on the daily change of light and the sum of light from all sides. Shade by forest wall in this case gives better light condition than shade by forest canopy. Therefore, on the practice of silveculture, the shade by forest wall should be widely spreadcd.更多还原