一、前言这次进行的木材物理力学試驗的五个树种——栓皮櫟、麻櫟、化香、黃連木及苦楝是分布在豫西南大别、桐柏山区的主要用材树种。試驗目的在于求得五个树种的物理力学性貭均值,作为編制指标的依据,供用材部門設計、計算和参考等之用。五个树种在我省的分布、木材加工性貭及主要用途如下: I. Preface The five species of wood physical and mechanical tests carried out this time - Quercus variabilis, Quercus acutissima, Fragrant incense, Pistacia chinensis and Melia azedarach are the main timber species distributed in Dabie and Tongbai Mountains of southwestern Henan Province. The purpose of the experiment is to find the physical and mechanical properties of five tree species, as a basis for the preparation of indicators for the timber sector design, calculation and reference purposes. Distribution of five species in our province, wood processing 貭 and the main purposes are as follows: