核桃楸垄播不同密度对苗木质量的影响

The Effects of Different Ridge Sowing Density on Seedling Quality of Juglans mandshurica

核桃楸(Juglans mandshurica Maxim.)是东北地区三大珍贵硬阔叶用材树种之一,也是东北地区的主要造林树种。通过对垄播不同育苗密度的核桃楸的茎干、根系生长等特性与每米生物量的研究试验,结果表明,当密度达到50株/m2时,是核桃楸的最优育苗密度,这时的苗高、地径、主根长、侧根数等都高于其它密度,有利于优质壮苗的培育。

Juglans mandshurica is one of the precious three hardwood timber tree species in the northeast, it is also an af- forestation tree specie in the northeast. According to the studies of stems, root growth characteristics and biomass of each meter of J. mandshurica on different seedling density, the results showed that： The best seedling density was 50 per meter in the seedling cuhivation of J. mandshurica, and the seedling height, ground diameter, root length, The number of lat- eral root were optimal, It was beneficial to the cultivation of high quality seedlings.