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1.模型林分Iについて1)特に塊植の6本植の高密度区を除いて,単植と塊植の単位面積当りの地上生重量には差はあまりみられない。2)塊植の高密度では,単位面積当り本数が等しい場合,クランプ当り本数が多いと単位面積当り地上生重量が低下する傾向がみられる。3)塊植の場合,クランプ間隔が等しければクランプ当りの地上生重量は等しくなる傾向がみられる。4)上長成長には植栽密度,植栽様式の差はみられない。5)高密...度でも樹高の度数分布は正規分布をしている。2.模型林分IIについて1)上長成長については植栽密度,植栽様式の影響はまだあらわれていない。2)樹高の度数分布は正規である。
This paper deals with the study of influences of difference of planting densities and patterns on the growth of two model stands. Both the model stands were established in March 1958. Sugi seedlings were planted in Model Stand I, and Sugi plantlets grown from cuttings were planted in Stand II. Sugi plants of Stand I were dug up and the fresh weights were measured in July 1960. In Stand II, only the top lengths were measured in November 1960. The results obtained are summarized as follows. 1. On Model Stand I 1) Regarding the fresh weight of total top per unit area, there was no difference between the individual planting and the planting in clumps, except the high density planting in clumps. 2) In the case of planting in clumps, when the planting densities were high and equal, most of the plots which had larger numbers per clump showed lower fresh weight of total top. 3) When clump distances were equal, fresh weights of total top per clump tended to be equal. 4) Top lengths were not affected by difference of densities or patterns. 5) With higher densities also, the frequency of top lengths showed a normal distribution. 2. On Model Stand II 1) Top length growths had not yet been affected by densities and patterns. 2) The frequency distribution of top lengths was normal.show more
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I はじめに II 試験の方法 III 結果および考察 IV 摘要 参考文献 Resume
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KJ00005470430