黄金刚竹竹鞭生长特征及地上部分生长指标相关性研究

测定分析了黄金刚竹竹鞭生长特征及地上部分各生长指标间的相关性。结果表明:黄金刚竹竹鞭以2~3年生竹鞭为主,所占比例超过竹鞭总量的50%;竹鞭分布于0~30 cm的土层,以10~20 cm土层分布最多;在地上部分各生长指标中,秆高和胸径与地径、胸径处节间长、地径处节间长、地上部分总质量及根质量间均呈显著性相关关系;以胸径作为自变量建立的黄金刚竹生长模型,可以可靠地估计其他生长量指标。

A Study of Rhizome Growth Characteristics and Correlation Between Growth Indexes of Aboveground Part of Phyllostachys vivax McClure f. aureocaulis N. X. Ma

The rhizome growth characteristics of Phyllostachys vivax McClure f. aureocaulis N. X. Ma and the correlation between the growth indexes of its aboverground part were measured and analyzed. The results showed that the rhizomes of Ph. vivax were mostly 2-3 years old, accounting for 50% of the total amount of rhizomes; the rhizomes were distributed in the soil layers between 0-30 cm, mostly between 10-20 cm deep; among the growth indexes of its aboveground part, the culm heights and DHB were significantly correlated with internode length at culm DHB, internode length at culm base, aboveground biomass and root biomass; the Ph. vivax growth model set up using the DHB as the independent variable could be used to reliably estimate the other growth indexes.