植栽密度가 落葉苗의 生長에 미치는 影響 = Influence on growth of Larch (Larix gmelini var.principisrupprechtii(Mayr) Pilger) Seediling in Planting density

국문 초록 (Abstract)

落葉松 1-1苗를 生産하는데 보다 더 效果的인 方法을 模索하고져 本校의 苗圃場에서 落葉松 1年 生苗를 植栽密度別로 床替하여 生長狀態를 試驗한 結果를 要約하면 다음과 같다.
1. 植栽密度가 높은 D區와 E區는 生育空間이 比較的 넓고 受光狀態가 良好하여 植栽密度가 높은 A區, B區, C區보다 苗高生長이 좋았다.
2. 根元徑生長도 植栽密度가 낮은 D區와 E區가 좋았다.
3. 植栽密度가 높은 A區는 10月에 苗木이 가장 많이 枯死되었으며, 枯死率도 가장 높았다.
4. 落葉松 1年生苗는 合格苗의 得苗本數와 得苗比率이 比較的 좋은 D區로 床替하는 것이 1年生苗의 損失이 적고 床替하는 勞動力도 節約된다고 생각한다.

다국어 초록 (Multilingual Abstract)

This study was carried out to inguiry the effective way producing Larch (Larix gmelimi var principis-rupprechtii(Mays)Pilger)seedlings(l-1), and there fore was transplanted Larch seedung(1-0) as each planting density in this forestry seedbed and was investigated growth of seedlings.
The results obtained were as fo1lows.
1. In D. p1ot and E. Plot of low plantng density the height growth of seedling was made a good record owing to have large width and sound 1ight than A. plot, B. plot and C'plot of high p1anting density.
2. Diameter growth of seedling was made a good record in D.Plot and E.Plot of low pianting density.
3. In A. pIot of high planting density the Larch seedling was dead extremely much on octobober and withering dead ratio was higest.
4. I conclude that Larch seedling(1-0) is had to transplant at D. plot of good seedling as possible of standing the test and good ratio as possible and that is substracted laber transplanting Larch seedling(1-0) with using few seedling.