著者

北村 博嗣

出版者

一般社団法人日本森林学会

雑誌

日本林學會誌 (ISSN:0021485X)

巻号頁・発行日

vol.33, no.11, pp.383-385, 1951-11-25

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A shrinkage test have been made on Madake (Phyllostachys reticulata C. KOCH) grown in Akadomari and Kawasaki village of Sado district. The results of this test on 7 bamboos are as follows.The shrinkage percentage was calculated based on green dimension to oven or air dry.1) Table 1. Shrinkage percentage.[table]In longitudinal dimension, the shrinkage percentage to oven dry is extremely larger than that of to air dry.2) The shrinkage percentage of Moso-chiku (P. pubescens MAGEL) and Madake, in radial and tangential dimension, is almost similar but in longitudinal, Moso-chiku has larger one.3) These is no relation between the shrinkage percentage and the height from the ground, as shown in table 2.[table]4) The minimum value of specific gravity appeared in about one meter from the ground and in other part, increased with the height.