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首页> 外文期刊>Acta Horticulturae >Development of leaf sampling and interpretation methods and nutrient budget approach to nutrient management in almond (Prunus dulcis (Mill.) D.A.Webb).
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Development of leaf sampling and interpretation methods and nutrient budget approach to nutrient management in almond (Prunus dulcis (Mill.) D.A.Webb).

机译：开发了用于杏仁养分管理的叶片采样和解释方法以及养分收支方法（Prunus dulcis（Mill。）D.A. Webb）。

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摘要

In the following we report the results of a series of large integrated field studies conducted in almond from 2008-2012. One of these projects principal goals was the systematic reexamination of both current leaf-sampling protocols and the application and interpretation of established critical values. A second principal goal of this project was to quantify whole orchard nutrient budget analysis and nutrient demand. A reanalysis of the use of leaf sampling and critical values in almond suggests that leaf samples can be collected approx. 40 days after full bloom (DAFB) and that algorithms can be used to interpret nutrient concentrations with respect to a previously established critical value even if that standard was established at a different sampling date. Measurements of multi-site yield and nutrient analysis has been used to establish crop demand curves and patterns of nutrient uptake throughout the season. In almond more than 80% of the total N is accumulated in fruit by mid-June more than two month prior to harvest. Yield and N concentration determine N demand which varies with fertilizer application rate. A 1000 kg kernel yield exports 59 kg N for 309 kgN/ha application.
机译：在下文中，我们报告了2008-2012年在杏仁中进行的一系列大型综合田间研究的结果。这些项目的主要目标之一是系统地重新审查当前的叶子采样协议以及已确定的关键值的应用和解释。该项目的第二个主要目标是量化整个果园养分预算分析和养分需求。对杏仁中叶片采样和临界值的使用进行的重新分析表明，可以采集大约10个叶片样品。盛开40天后（DAFB），即使该标准是在另一个采样日期建立的，该算法也可用于解释相对于先前确定的临界值的营养物浓度。多站点产量和养分分析的测量已用于建立整个季节的作物需求曲线和养分吸收模式。在杏仁中，到收获前两个多月的6月中旬，总氮中的80％以上累积在水果中。产量和氮含量决定了氮需求量，氮需求量随肥料施用量的变化而变化。施用309 kgN / ha时，每公斤1000 kg籽粒的产量为59 kgN。

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