Quantitative Expression on Shapes of Garden Young Trees

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  • 庭園樹木苗木形態の量的表示
  • テイエン ジュモク ナエギ ケイタイ ノ リョウテキ ヒョウジ

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Forms and Shape of young trees have their respective individuality according to kinds of trees and some of them are variously transformed in accordance with the difference in their culture circumstances and different methods of bringing them up. What formal terms and conditions are necessary for young trees so that they can be regarded as excelient garden ones? If there are any standards for such terms and conditions, they will be desirable and convenient for us to develop the technique of cultivation of young trees and to decide prices of them as well, the writer thinks. Consequently in August, 1958<BR>I investigated the fololwing twenty items about twenty-six kinds f three-year-old trees fitted for gardens and attemped to express quantively the forms and shapes of them. Length of part above ground, Length of undergrouod part, Weight of part above ground, Weight of underground part, Total weight, Diameter of part near root, Diameter of spread of roots, Number of split roots, Number of branches, Total of length of branches, Width of spread of branches, Ratio of spread of branches to length of pat adove ground, Ratio of spread of roots to length of underground part, Ratio of spread of roots to that of branches, T-R rate, Ratio of length of part above ground to diameter of part near root, Ratio of total weight to T-R rate, Ratio of total weight to length of part above ground, Ratio of weight of roots to length of part above ground, Ratio of weight of roots to total weight. The results of main items are summed up as follows.

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