秦岭冷杉幼苗适应性的研究  

Study on Seedling Adaptability of Abies chensiensis

作　　者：李庆梅[1] 谢宗强[2] 孙玉玲[2] 

机构地区：[1]中国林业科学研究院林业研究所,国家林业局林木培育重点实验室,北京100091 [2]中国科学院植物研究所,北京100093

出　　处：《林业科学研究》2008年第4期481-485,共5页Forest Research

基　　金：国家林业局948项目“林木种子质量快速测定技术引进”(2003-4-03)

摘　　要：通过对秦岭冷杉不同海拔、光照、苗床类型、覆土深度等条件下的野外播种试验,分析了不同条件下种子萌发、幼苗存活和幼苗生长率的差异,揭示了秦岭冷杉种子及幼苗在天然环境下的适应性。天然生境下秦岭冷杉的平均出苗率只有17.7%,不及实验室发芽率(36%)的一半。海拔、光照、苗床类型、埋藏深度对秦岭冷杉的种子萌发、幼苗存活和幼苗生长率都有不同程度的影响。生产上秦岭冷杉的复壮一定要遵循适地适树的原则。Through seeding test on field condition under different of altitude, lighting, seedbed type and soil thickness, as well as seed germination and seedling survival being compared among provenances, the adaptability of Abies chensiensis seed and seedling were studied in natural environment. The results showed that in natural environment the seed germination rate of A. chensiensis was only 17.7% , which was less than haft of its germination rate （36%） in laboratory. Altitude, lighting, seedbed type, soil thickness and seed provenances all had various effects on seed germination, seedling survival and growth of A. chensiensis. In practice, the rejuvenation of A. chenesiensis should follow the principle of favored tree species for suitable sites and optimal provenances be used.

关 键 词：秦岭冷杉 幼苗 适应性 

分 类 号：S791.14[农业科学—林木遗传育种]