樹木の回旋性について-2-

概要

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Spilting method to investigate the twist of trees (Scientific Reports of the Fac. of Agr., the Shinsu Univ. vol.1) was applied to boles of Pinus densiflora aged 15 to 45 years. Rules which were found in Larix Kaempferi were also stand true in this popular species. (Considerations were made to illustrate relations between the angle of twist and the depth of annual rings. But according to the shortage of records, conclusions mus the reserved to further investigations. Only to de mentioned is that no mark of correlations between the amount of the angle of twist and the depth of annual rings is discovered, if parts of the bole to which they belong are of no account.
信州大学農学部の論文