We can find the relationships between relative diameter and relative height, DBH and breast height culm thickness, relative culm length and number of culm by studied the structure of culm form.
通过对梁山慈无性系种群秆形结构的研究，初步掌握了梁山慈相对直径和相对高度的关系、胸径与胸高壁厚的关系、梁山慈相对节间长度和节位数的关系。
Factors involved in the model are: tree height. diameter at breast height. bark thickness at breast height. height of first dead branch and height of blackened trunk.
判别因子分别是：个体的树高、胸径、胸高处皮厚、第一枯枝高和树干熏黑高度。
The results showed: (1) The stands with different remaining years presented outstanding difference in the numbers and breast-height diameter of new culms and the output of bamboo timber.
不同留养度数的毛竹林、其新竹数量、新竹胸径和竹材产量的差异是显著的。
The genetic gains of superior families selected by progeny tests on early tree height, diameter breast-high and volume growth were 8.24%, 14.33% and 24.16% respectively.
通过子代测定选出的优良家系，其有性后代在树高、胸径和材积早期生长的遗传增益分别为8.24%，14.33%和24.16%。
The genetic gains of superior families selected by progeny tests on early tree height, diameter breast-high and volume growth were 8.24%, 14.33% and 24.16% respectively.
通过子代测定选出的优良家系，其有性后代在树高、胸径和材积早期生长的遗传增益分别为8.24%，14.33%和24.16%。
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