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題 名 | 柚木造林之苗木與成林後之疏伐各以不同處理對其生長影響之研究 |
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作 者 | 洪良斌; 羅卓振南; | 書刊名 | 中華農學會報 |
卷 期 | 81 1973.03[民62.03] |
頁 次 | 頁36-48 |
關鍵詞 | 成林; 柚木; 苗木; 疏伐; 造林; |
語 文 | 中文(Chinese) |
中文摘要 | 本試驗於民國39年春在林試所中埔分所坑底林區,用苗木不同處理實施造林試驗,經過8年後?民國46年冬當柚木材為8年生時,派員前往調查其生長量,以為造林試驗成果資料。當時因覺該柚木幼林生長快速,林冠開始鬱悶,乃進一步實施第一次之疏伐撫育試驗,經過8年後?民國54年冬,前往調查其疏伏試驗結果。然後再實施第二次之疏伐撫育試驗,至民國58年冬,再前往調查其試驗成果後,該試驗工作?告結束。茲將二十年來試驗調查及觀察所得結果,簡述如下: (一)苗木不同處理之造林試驗:係以受(B)處理?用切幹苗造林之幼林,生長最佳,(C)處理?用原株苗造林之幼林次之,(A)處理?用帶土苗造林之幼林生長,最為惡劣。 (二)疏伐度不同處理之試驗:平均每木所測定要素之總生長量,如樹高、胸徑、材積等,均以(b)和(c)兩種疏伐度撫育後同較為優良,受(o)處理及無疏伐撫育之對照區,最為惡劣。 (三)合計一、二兩期疏伐撫育試驗後12年,各處理每公頃每年之林分材積絕對值生長總量,以受(b)處理疏伐撫育後之林分為20.0181m3,示為最大,(c)處理為19.1682m3,(o)處理之林分為17.2207m3,示為最小。 |
英文摘要 | Teak is one of the important economic trees in the world. It distributed in Siam, Burma, Jova and Malaya etc. The timber of this species against the injury from water is very strong and is used for the best material of ship building. In the year 1901, Teak was introduced in the southern part of Taiwan. It grows rapidly. Since the site of this island is very similar to the natural habitat of this species. The stand used in this study, a young forest of this species, sits on a slop of shung-pub, a Branch of T.F.R.I.. The altitude of that area is about 180 m. above sea leavel. Aspect is east-north, with slopes from 5-25 percent. The mother rock of this forest land is pear-layer, and the soil being clay, has a deep surface and is composed of richly humus-layer. Annual precipitation is aout 3000m.m.. The annual average temperature is 23.14℃. The purposes of this paper are to find out what is the best material of seedlings for being planted to establish a good stand and to determine what is the best grade of thinning for tending the stand of this species planted in Taiwan. These experiments were started in the spring of 1950, and ended in the winter of 1969. |
本系統中英文摘要資訊取自各篇刊載內容。