林木の挿木困難樹種に関する研究-2-

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From our experimental results to cutting of Larix (Kaempferi) come to conclusion as follows; 1. The rooting is best when we use (the branch) of the youngest mother tree, and in the condition of same tree age, it is best in use of jahres trieb than of 1st. 2nd and 3rd age's branch. 2. As far as making use of younger mother trees, the rooting of cutting is generally limited to callus formation's part. 3. Case of Carrying out, the so called Callus formation method, the constant soil's temperature and no sprout in burrying cutting are essential term.
信州大学農学部の論文