The seasonal timing of biomass and nutrient distribution among different vine organs was determined over two growing seasons in four-year-old Pinot noir grapevines grown in field microplots. Vines were fertilized in spring, and biomass and nutrient contents of nine separate vine parts were measured at six phenological stages (budbreak, bloom, veraison, harvest, leaf fall, and dormancy) each year. The uptake and distribution of four micronutrients—boron (B), zinc (Zn), Manganese (Mn), and copper (Cu)—was determined for the first time in field-grown grapevines. Whole-vine nitrogen (N) uptake was maximal early in the season, with most N uptake occurring before bloom. Uptake of phosphorus (P) and sulfur (S) was also early compared to other nutrients, with similar quantities of these elements taken up between budbreak and bloom and between bloom and veraison. All other macronutrients—potassium (K), calcium (Ca), and magnesium (Mg)—and micronutrients (B, Zn, Mn, Cu) had peak uptake between bloom and veraison. Remobilization of nutrients from permanent vine structures helped supply early season canopy needs for N, K, and S. More N was remobilized from reserves and this lasted until veraison, supplying ~35% of the canopy N between budbreak and veraison. Remobilization of K and S occurred only until bloom and contributed ~30% of the canopy increase in these elements up to that time. The small root fraction was the main source of remobilized nutrients for N, K, and S. A net annual gain of nutrients in the permanent vine parts occurred for P, K, Ca, Mg, Zn, and Cu. The quantities of each nutrient required by young Pinot noir grapevines carrying a typical crop yield for the region are presented and discussed.

中文翻译：

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两个季节年轻黑比诺葡萄的营养吸收和分布

在田间微型地块中生长的四年生黑比诺葡萄藤的两个生长季节确定了不同葡萄器官之间生物量和养分分布的季节性时间。葡萄树在春季施肥，每年在六个物候阶段（萌芽、开花、转色、收获、落叶和休眠）测量九个单独的葡萄树部分的生物量和养分含量。四种微量营养素——硼 (B)、锌 (Zn)、锰 (Mn) 和铜 (Cu) 的吸收和分布是首次在田间种植的葡萄藤中测定。整个葡萄树的氮 (N) 吸收在本季早期最大，大部分 N 吸收发生在开花前。与其他营养素相比，磷（P）和硫（S）的吸收也较早，在萌芽和开花之间以及在开花和转色之间吸收了相似数量的这些元素。所有其他常量营养素——钾 (K)、钙 (Ca) 和镁 (Mg)——以及微量营养素（B、Zn、Mn、Cu）在开花和变色之间都有峰值吸收。永久性葡萄藤结构中养分的再动员有助于满足早季树冠对 N、K 和 S 的需求。更多的 N 从储备中被再动员，并持续到 veraison，在萌芽和 veraison 之间提供了约 35% 的树冠氮。K 和 S 的再动员仅发生在开花之前，并且在那时为止这些元素中贡献了约 30% 的冠层增加。小根部分是 N、K 和 S 再动员养分的主要来源。P、K、Ca、Mg、Zn 和 Cu 在常生藤蔓部分的养分每年净增加。