臺灣杉苗木修枝作業之效應

The Effects of Pruning on Taiwania (Taiwania cryptomerioides Hay.) Seedling

劉瓊霦(Chung-Bin Liou) ； 郭幸榮(Shing-Rong Kuo)

《林業試驗所研究報告季刊》 9卷4期 (1994/12) Pp. 349-354

https://doi.org/10.7075/BTFRI.199412.0349

摘要

本試驗係以培育於臺大實驗林和社苗圃之逾l年生臺灣杉塑膠袋苗為材料，將苗木的下層枝條修剪1/3。探討因修剪枝條對供源與需求之影響及對苗木形態與生理之反應。試驗結果顯示，苗木經過修剪可促進高度、直徑之生長，澱粉及可溶量也增加，唯根系乾重減輕，但差異不顯著。此修枝作業為一值得進一步探討以配合其他育苗措施的苗圃作業。

關鍵字

臺灣杉 ； 苗木 ； 修枝

並列摘要

Older than 1-year Taiwania (Taiwania cryptomerioids Hay.) seedlings, grown in polyethylene bag at Ho-Sueh nursery on National Taiwan University Experimental Forest, were subjected to pruning 1/3 of lower branches. The morphological parameters of seedlings and the accumulation and partitioning of assimilate after treatment were determined to comprehend the response of seedling to pruning. The results showed that the growth of height, collar diameter, and dry weight of shoot system were promoted by pruning. The chlorophyll content and accumulation of starch and soluble sugar in both shoot and root system were increased. However, the response of root dry weight was negative. Nevertheless, the combination of branch-pruning with other nursery practices for Taiwania Seedling were valuable to further study.

並列關鍵字

Taiwania cryptomerioids ； seedling ； pruning