頁籤選單縮合
題 名 | 不同氮源對茶樹氮素代謝酵素活性之影響=Effects of Various Nitrogen Sources on Nitrogen Metabolism Enzymes Activity of Tea Plant |
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作 者 | 邱垂豐; 朱德民; | 書刊名 | 臺灣茶業研究彙報 |
卷 期 | 16 1997.05[民86.05] |
頁 次 | 頁61-77 |
分類號 | 434.817 |
關鍵詞 | 氮源; 茶樹; 氮素代謝; Nitrogen sources; Tea plant; Nitrogen metabolic; |
語 文 | 中文(Chinese) |
中文摘要 | 本試驗以臺茶 12 號和青心烏龍為供試品種,探討不同氮源處理對茶樹氮素代謝 之影響。為避免土率干擾因子,採用砂耕栽培法,按春茶、夏茶、六月白、秋茶及冬茶等不 同季節取樣調查分析。藉以瞭解不同氮源對茶樹氮素代謝之影響,以作為茶園氮素肥培管理 之參考。二供試品種在硝酸氮肥處理下,植株各部位器官所累積硝酸鹽離子含量均較尿素或 硫酸銨肥料處理來得高。對於氮素代謝有關酵素活性,硝酸態氮處理,除了茶樹植株葉片有 較高硝酸態氮還原酵素活性外,其餘亞硝酸還原酵素,麩胺醯胺合成酵素,麩胺酸合成酵素 及麩胺酸脫氫酵素等一連串氮素代謝酵素活性卻較尿素或硫酸銨處理有降低之趨勢。並且控 制氮素代謝這些酵素的活性受到季節的影響相當大。 |
英文摘要 | The objective of the experiment was to evaluate the effect of various N sources on the nitrogen metabolism of tea plants. Two tea cultivars, Taiwan Tea Expermant Station No.12 (TTES No. 12) and Chin-Shin Oolong, were grown in sand culture and supplied with nutrient solution, which content 40ppm of pure nitrogen. The nitrogen come from 3 different sources, which are ammonium nitrogen (as ammonium sulfate)、 (nitrate nitrogen (calcium nitrate and sodium nitrate) and urea, respectively. The experiment was conducted in the Taiwan Tea Experiment Station (from 1991 to 1992), and tea plants were sampled during the growth period. Reduction in growth、 yield and quality of tea plants by using nitrate--N was assoicated with the enzymes controlling the nitrogen metabolism. Nitrogen metabolic changes including nitrate content and nitrate reductase activity localized primarily in the leaves were higher in tea plants grown under nitrate--N than that under ammonium--N or urea. While activities of nitrite reductase、 glutamine synthetase、 glutamate synthetase and glutamate dehydrogenase in nitrate--N treated plant were significantly lower than those in ammonium-N or urea treated plant. Also, the activities of these enzymes controlling the nitrogen metabolism were affected highly by the seasonal changes. |
本系統中英文摘要資訊取自各篇刊載內容。