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前言木材的容积重,是木材主要的物理性质之一,同时又是木材工艺价值高低的重要标志,它与木材力学性质成正比的关系。注1)。因此,研究木材容积重的变异性具有很大的理论和实践的意义。可以作为科学营林和充分而合理利用木材的科学根据,同时,在教学上亦有一定的价值。但是对这样的问题,在我国研究得还不多。因此,研究这一问题是非常必要的。研究木材容积重的变异性,首要的条件是取材的数量要相当的多,而且要包括各种各样的立地条件和立木生长发育情况的样木。可是,本试验系在生产实习时就实习的林区,提择了六
Foreword The volume of wood is one of the main physical properties of wood, but also an important symbol of the value of wood technology, which is directly proportional to the mechanical properties of wood. Note 1). Therefore, the study of the variability of wood volume has great theoretical and practical significance. It can serve as a scientific basis for scientific management of forests and the full and rational use of timber. At the same time, it also has some value in teaching. However, there is not much research on such a problem in our country. Therefore, it is very necessary to study this issue. Study of the variability of the volumetric weight of wood, the first condition is the amount of material to be quite a lot, but also to include a variety of site conditions and standing wood growth and development of wood. However, in this experiment, forest areas that were interned during production internship were selected for six