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首頁> 外文學位 >The effects of three nitrogen fertilization rates on the fruit composition of Vitis vinifera cv. Cabernet Sauvignon.
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The effects of three nitrogen fertilization rates on the fruit composition of Vitis vinifera cv. Cabernet Sauvignon.

機譯:三種氮肥施用量對葡萄的果實成分的影響。赤霞珠。

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摘要

The nitrogen in grape juice has important implications in winemaking. Juices deficient in nitrogen may result in stuck or sluggish fermentations. Yeast assimilable nitrogen (YAN) in the juice of Cabernet Sauvignon, clone 8, berries was evaluated as a function of nitrogen (N) application in the vineyard. Berries were collected from vines receiving applications of 7, 21, or 42 kg N/ha. No significant differences as a result of N application were seen in yields, Brix, titratable acidity or pH at harvest in 2001 and 2002. When YAN was measured, there were treatment differences at harvest in 2001 but not 2002 as a result of nitrogen applications of 7, 21, or 42 kg N/ha to vines. When nitrogen sources were broken down into "order of preferred N compounds," treatment differences at harvest were seen in juice from vines receiving applications of 7, 21, and 42 kg N/ha in 2001 but not 2002.
機譯:葡萄汁中的氮對釀酒具有重要意義。氮不足的果汁可能會導致發(fā)酵停滯或緩慢。品麗珠(Cabernet Sauvignon)(克隆8)汁液中的酵母同化氮(YAN)被評估為葡萄園中氮(N)施用的函數(shù)。從接受7、21或42 kg N / ha施用量的葡萄藤中收集漿果。施氮量在2001年和2002年收獲時的產(chǎn)量,白利糖度,可滴定的酸度或pH值方面無顯著差異。當測量YAN時,在2001年收獲時存在處理差異,但2002年因施氮而沒有差異。葡萄樹:每公頃7、21或42千克N / ha。當將氮源分解為“優(yōu)選的N化合物的順序”時,在2001年施用7、21和42 kg N / ha的葡萄藤的汁液中發(fā)現(xiàn)收獲時的處理差異,但2002年沒有。

著錄項

  • 作者

    Dickson, Elizabeth.;

  • 作者單位

    California State University, Fresno.;

  • 授予單位 California State University, Fresno.;
  • 學科 Agriculture Plant Pathology.; Agriculture Agronomy.
  • 學位 M.S.
  • 年度 2005
  • 頁碼 49 p.
  • 總頁數(shù) 49
  • 原文格式 PDF
  • 正文語種 eng
  • 中圖分類 植物病理學;農(nóng)學(農(nóng)藝學);
  • 關鍵詞

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