7 惡條件下に於ける英國トゲナシニセアカシヤの挿木・埋根試験

概要

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This experiment was perfected upon Robinia pseudoacacia var. umblaculifera, the rare parent tree, for the purpose of increasing the species rapidly and abundantly by means of stem- and root-cuttings, under the bad condition, touching upon the size (diameter and length) of material, effect of hormones.The result of experiment may be summarized as follows.1. The rooting percentage is 90% or more for the stem-cuttings of more than 10cm length and 5〜7mm diameter.2. The smaller the diameter of stem-cuttings become, the more effective the treatment of α-naphthalene sodium acetate becomes.3. The rooting percentage is more than 90% for the root-cuttings of 18 cm length or more and more than 4mm diameter.4. The bigger the diameter and the longer the length of root- and stem-cuttings becomes, the larger the size of saplings becomes.
一般社団法人日本森林学会の論文
1952-01-25