不同橡胶树品种抗风性与木材特性比较研究

Comparative Study on Wind Resistance and Wood Characteristics of Different Rubber Tree Species

通过分析南华农场9个橡胶树品系风害、生长、木材特性及其相关性研究,结果得出:(1)不同橡胶树品系间抗风性存在显著差异,红星1抗风性最强,其次为湛试167-16,云研1抗风性最差;(2)不同橡胶树品系间生长和木材特性存在显著差异,纤维形态差异不显著。红星1的树皮厚度和树围均为最小,而云研1的树围和Pilodyn值为最大,这可能是造成两者抗风性差异的原因;(3)相关性分析得出风害等级与树皮厚度、树围和Pilodyn值存在极显著的正相关,断倒率和平均风害级别与纤维宽存在显著负相关性。

Through the analysis of wind damage,growth,wood characteristics and the correlations between various traits among 9 rubber tree strains growing in Nanhua Farm,it was found that:1)there were significant differences in wind resistance among different rubber tree strains with Hongxing 1 having the strongest wind resistance,followed by Zhanshi 167-16,while Yunyan 1 had the worst wind resistance.2)There were significant differences in growth and wood characteristics among different rubber tree strains,but there were no significant differences among them for fiber morphology.Hongxing 1 had the smallest bark thickness and tree girth,while Yunyan 1 had the largest tree girth and Pilodyn value,which may be the root cause of differences between the two varieties for wind resistance.3)Correlation analysis showed that there was a highly significant positive correlation between the wind damage level and bark thickness,tree girth and Pilodyn value,and that there was a significant negative correlation between cut-off rate and average wind damage level and fiber width.