马尾松幼苗生长特性与生长应变研究

Study on Growth Characteristic and Growth Strain of Masson Pine Saplings

该文以60株不同倾斜角度的马尾松为试材,对其生长特性进行了研究,并在这些树木中选择典型的2株马尾松对其生长应变进行测定。结果表明:(1)随着倾斜角度的增加,马尾松的生长量相应减小;(2)马尾松直立幼苗的应变为压应变,在倾斜幼苗下表面的应变为拉应变,应变值都随时间的增加而增大,达到一定值时趋于稳定;(3)方差分析表明,不同倾斜角度下马尾松的生长特性和生长应变的差异达到了显著水平。

In this study,sixty masson pine saplings with different inclined angle were selected to study the growth characteristic,and two typical masson pine saplings were used to measure growth strain.The result showed that：（1）With the increase of leaning angle,the growth characteristic of masson pine decreased;（2）In the young stem of masson pine,the growth strain in the lower side of the upright stem was pressure strain,the growth strain in the lower side of the leaning stem was tensile strain,and the value all increased with the time,then became stable after reaching certain time;（3）The ANOVA results revealed that there were significant effects of inclined angle on growth characteristic and growth strain