沙地不同育苗方式的核桃楸苗木生长性状分析

Traits of Sowing Juglans mandshurica Seedlings in Sandland

试验对沙地播种的不同种源、不同育苗方式的核桃楸苗期(1年生)性状进行调查分析,结果表明:不同种源的核桃楸沙地育苗苗期各性状有较大差异,辽东核桃楸苗木质量明显好于苗圃核桃楸,地径最高可达8.02mm,苗高可达21cm,但种源内变异较大;苗期各性状除根长外,其他各性状两两之间均呈极显著的正相关(P<0.01),其中地径和上径的相关性最强(相关系数为0.887),苗高和根长之间呈显著性相关(P<0.05);沙地核桃楸育苗采用容器杯方式育出的苗木根长明显大于裸根苗,且须根多。

Traits of 1-year-old Juglans mandshurica with different provenances with dif{erent seedling-raising methods were investigated. Result shows that traits of Juglans mandshurica with different provenances raised in sandland have great differences; quality of Juglans mandshurica seedlings in eastern Liaoning Province is optimal in the nursery of Juglans mandshurica ;ground diameter up to 8.02 mm, height of seedlings up to 21 cm, but variation in the provenances are larger ; each character of Juglans mandshurica in seedling stage except for root length,is significant positive correlation between the two traits （P〈0.01）, the ground diameter and diameter on the strongest correlation （correlation coefficient 0. 887）, there is a significant correlation between seedling height and root length （P 〈0.05） ;root length of Juglans mandshurica seedlings by contain cups is significantly longer than that of the bare root, and the fibrous roots.