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中文摘要：
为了掌握柔枝松在中国的生长适应情况，对柔枝松引种后1a生苗木的生长情况进行了研究，并选择乡土树种油松、华山松和白皮松作为对照。结果表明，柔枝松种源1和种源2的场圃发芽率分别为24．25％和25．25％，均低于油松（36．5％），但高于白皮松（18．25％）和华山松（13．25％）；成活率比乡土树种低；柔枝松的苗高生长较慢，柔枝松种源1和种源2的1a生苗苗高分别为3．1cm和3．6cm，低于油松（6．3cm）、华山松（5．2cm）、白皮松（4．3cm）；柔枝松种源1和种源2的1a生地径，分别为0．175cm和0．178cm，低于油松（0．208cm）但与华山松（0．182cm），与白皮松（0．178cm）相差不大；柔枝松种源1和2主根平均长度分别达到了19．1cm、14．8cm，均长于乡土树种，两个柔枝松种源之间相比，种源2优于种源1。
英文摘要：
In order to master the growth situation and adaptability of limber pine in China, studies were given to its growth status after introduction taken Pinus tabulaeformis, Pinus armandi and Pinus bungeanaas as controls. The results indicated that the nursery germination rate of the germplasm source 1 and 2 were 24.25% and 25.25% respectively, lower than that of Pinus tabulaeformis （36.5%）, but higher than that of Pinus bungeanaas （18.25%） and Pinus armandi （13.25%）; the survival rate was lower than that of native species. The seedlings of Pinus flexilis grew relatively slow. The height of yearling of germplasm source 1 and 2 were 3.1cm and 3.2cm, lower than Pinus tabulaeformis （6.3 cm）, Pinus armandi （5.2 cm） and Pinus bungeanaas （4.3 cm）. Root length were 0.175 cm, 0.178 cm respectively, shorter than Pinus tabulaeformis （0.208 cm）, but was not significantly different with Pinus armandi （0.182 cm） and Pinus bungeanaas （0.178）. The average tap root length of Pinus flexilis from germplasm source 1 and 2 were 19.1 cm and 14.8 cm, longer than that of native species. Experiments showed that germplasm source 2 was better than germplasm source 1 in growth indexes.
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