Nutritional requirements and precise fertilization of wine grapes in the eastern foothills of Helan Mountain

文献类型： 外文期刊

第一作者： Jiang, Tingting

作者： Jiang, Tingting;Yan, Pengke;Wang, Rui;Yan, Pengke;Ma, Tinghui;Wang, Rui

作者机构：

关键词： wine grapes; macronutrients; nutritional diagnosis; fertilizer requirements; the eastern foot of Helan Mountain

期刊名称：INTERNATIONAL JOURNAL OF AGRICULTURAL AND BIOLOGICAL ENGINEERING （ 影响因子：1.885； 五年影响因子：2.232 ）

ISSN： 1934-6344

年卷期： 2022 年 15 卷 4 期

页码：

收录情况： SCI

摘要： Cabernet Sauvignon grapes in the wine-producing area of Helan Mountain, East Ningxia, China, were the research object in this study. The dissection of the roots and branching stems method was used to explore the dynamic changes in the nitrogen, phosphorus, and potassium nutrient requirements of wine grapes over a number of growth stages. The results showed that over the whole growth period, the nitrogen content of the roots was the highest during the leaf-expansion stage and lowest during the turning-color stage, and that the nitrogen content of the leaves and fruit showed a downward trend as growth progressed. The nitrogen content of the secondary branches was the lowest during the fruit expansion stage and the highest during the leaf-expansion stage; and the phosphorus content of the roots was the highest during the leaf-expansion stage and lowest during the fruit expansion stage. The phosphorus content of the trunk and primary branches showed a trend of "rising-falling-rising ". The phosphorus content of the leaves and secondary branches was the lowest during the turning-color stage, whereas the phosphorus content of the fruit was at its highest during this stage. The potassium contents of the secondary branches and fruit showed a downward trend, but the potassium content of the leaves was highest during the fruit expansion stage and lowest in the nutrient return stage. Over the whole growth period, the accumulation of nitrogen, phosphorus, and potassium in wine grapes was 129.92 kg/hm(2), 41.51 kg/hm(2), and 189.47 kg/hm(2), respectively, the total requirements for N, P2O5, and K2O were 262.38 kg/hm(2), 288.15 kg/hm(2), and 569.04 kg/hm(2), respectively, and the reasonable nutrient requirement ratio was 1.00:1.10:2.17.

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