【摘要】 本文为小干松苗期3年生引种试验初报,试验结果表明,小干松苗期表现突出,其高生长第二年达到16.15cm,地径达到0.38cm,第三年高生长达到22.6cm,地径达到0.56cm,且差异极显著,该树种抗逆性强,即抗虫(大黑金龟子)、抗寒、抗旱.为进一步引种小干松优良家系奠定了实验基础.更多还原

【Abstract】 The introduced variety of Pinus contorta for 3 years were reported tentatively.The results showed the expression of seedling stage was outstanding.The height was 16.15 cm and the collar diameter was 0.38 cm in the second year.In the third year,the height was 22.6 cm and the collar diameter was 0.56 cm.And the difference was significant.It’s stressresistance was strong,or pestresistance,coldresistance and droughtresistance.These results layed a experiment foundation for the further introduced variety of Pinus contorta.更多还原