46.浜厚真附近における前生林の造成試験(会員研究発表講演)

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The present study have been practiced under the results of my past study on the construction of farm-woods at Hama-atsuma. Species used are willows (Salix sachalinensis and two others), poplars (Populus maximowiczii and another) and Todo-fir (Abies sachalinensis). Wood-cuttings of willows and poplars were put into the soil which had been prepared roughly with a scoop; even little girls succeeded in this methods. Todo-fir was planted under and on the leeward of them. The results after 4 years are as follows : 1. Sprouts from wood-cuttings could not grow without weeding. Weeding with a scythe was done 2 to 3 times a growing season. 2. Willows grew rapidly and reached over 3 meter in height for 4 years-the figure is near my anticipation- the height is already sufficient as a windscreen. Poplars grew slower than willows but may form low tree belts for several years. 3. Todo-fir planted in autumn died in the most number during the very winter with severe freezing, but spring planting was not damaged by it. 4. Under-tree-planting of Todo-fir grew feebly or died because of less light. That planted leeward grew healthily and was not damaged by spring frosts, because of sufficient light and side-protection.
北方森林学会の論文
1970-02-28