heart wood

And the red heart wood P.massoniana whose red heart rate reaches 75% and more accounts for 0 6% of the population.

红心比率达75%以上的红心材马尾松占总体0.6%。

Investigations on the Natural Distribution of Red Heart Wood Pinus massoniana in Zhangping, Fujian

福建漳平红心材马尾松天然分布的调查研究

The survey of variation in red heart wood ratio between individual and within a single tree showed that red heart ratio rose with the increasing of DBH and growing ring.

通过对红心材株间和株内变异研究，发现株间红心率变异的一般趋势是随着植株胸径和年龄的增长而增长。

The results demonstrate that the distribution pattern of red heart wood Pinus massoniana tallies with the normal distribution;

对天然马尾松林（包括次生林）中红心材马尾松分布状况及红心率状况的调查研究结果表明：红心材马尾松分布型符合正态分布；

Cottonwood, maple, pinewood, birch , miscellaneous tree, trimmed log or heart wood of clamp-shaft remained.

杨木, 枫木,松木, 榆木, 杂木, 修直以后的原木或有卡剩下的木芯.