不同光强下红松幼树光合作用和营养物质含量的季节模式  

Seasonal Pattern of Photosynthesis and Nutrient Content of Korean Pine Seedlings Under Different Light Conditions.

作　　者：李俊清[1] 柴一新[1] 朱春全 王业蘧[1] 

机构地区：[1]东北林业大学,哈尔滨150040

出　　处：《生态学杂志》1991年第5期1-5,共5页Chinese Journal of Ecology

摘　　要：一、前言原始红松林下幼树生长缓慢,死亡率高,若干文献通过与桦木林光照和水热条件的对比观察,认为光是影响生长的主要原因。但同时也发现,在植物一切代谢活动最旺盛的生长季(6—9月),上述二种林下的光强(lx)Comparative experiments have been carried out to determine the height growth, photosynthesis, nutrient content and their seasonal courses for Korean pine seedlings under different light conditions. Shadings during both growing and non-growing seasons can affect the growth of Korean pine seedlings. Insufficient light illumination reduces their photosynthetic rate, nutrient uptake and normal physiological-metabolism activities. The growth retardation of virgin Korean pine seedlings under birch forest are proven to be resulted from the double effects of growing and non-growing seasons shadings. They disturb the photosynthesis and metatolism of Korean pine seedlings and lead to their growth retardation and poor regeneration.

关 键 词：红松 光合作用 光照强度 营养物质 

分 类 号：S791.247[农业科学—林木遗传育种]