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題 名 | 三斗石櫟幼苗施肥之試驗 |
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作 者 | 鄧英才; | 書刊名 | 嘉義農專學報 |
卷 期 | 30 1992.09[民81.09] |
頁 次 | 頁25-42 |
分類號 | 436.253 |
關鍵詞 | 三斗; 幼苗; 石櫟; 施肥; |
語 文 | 中文(Chinese) |
中文摘要 | 本試驗研究之目的係探討化學肥料之施用對三斗石櫟幼苗生長之效 應、生長季節性變化、各器官乾重及其構成比率,並瞭解其對苗木品質之影響, 以供育苗及撫育之參考應用。試驗處理,即NPK20g/株及NPK40g/株、N20g/株及 N40g/株、P10g/株及P20g/株、KlOg/株及K20g/株,另設無施肥區等9種,重複4次。 結果顯示: (一) 施肥可促進三斗石櫟幼苗之生長,尤以NPK三要素配合施用對幼苗生長效應 均極為顯著。 (二) 三斗石櫟幼苗之苗高生長之旺盛期與根頸直徑生長並不一致,不同施肥處理 會影響幼苗生長之季節性變化。 (三) NPK40g/株區之苗木乾重最高,其生長指數高達609。 (四) 三斗石礫幼苗根系發育相當良好,其根系乾重佔全株乾重拍33.57。 (五) NPK三要素混合區其苗木H/Wd(纖弱指數)最小,其值約2.77。 |
英文摘要 | Three cupule tanoak ( Pasania ternaticupula ) is evergreen medium- sizedtrees with grayish brownbark, up to 60cm in diameter and 12m in height. Itgrows in forests at 500~1500m alt. throughout the Taiwan. It's used as timberand implements. The purpose of this study is to study the effect of fertilization from different fertilizer treatments on growth, dry weight and dry matter construction,nutrient uptake rate and seedling quality of Three cupule tanoak seedling. Three kinds of fertilizers with different content ratios in nitrogen, phosphorus and potassium were used in the fertilization test. The results indicate that: (1) The effect of fertilizer treatments of Three cupule tanoak seedlings was very significant on the growth of seedlings. (2) NPK40g treatment showed the best effect on seedlings among 9 fertilizer treatments. It's index of growth was about 609 as compared to control seedling. (3) The nutrient uptake rate of nitrogen, phosphorus and potassium of seedlings was remarkably high for the application of N, P,K mixed fertilizer as compared to where only a single element was used. (4) The TR ratio of seedlings applied with N,P,K mixed fertilizer was higher than that of other treatments and showed that the seedling had the better quality. (5) The index of slenderness ( H/Wd ) of seedlings applied with N,P,K mixed fertilizer was lower than that of other treatments. |
本系統中英文摘要資訊取自各篇刊載內容。