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首页> 外文期刊>Journal of Plant Nutrition >Leaf analysis in strawberries: effects of cultivar, plant age, and sampling time on nutrient levels.
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Leaf analysis in strawberries: effects of cultivar, plant age, and sampling time on nutrient levels.

机译：草莓叶分析：品种，植物年龄和取样时间对营养水平的影响。

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In a four year survey, two control methods of nitrogen (N) supply in strawberry were combined. It was found that Nmin analysis could be used as a measurement of control from the beginning of the season, indicating the need of additional N supply. Leaf dry matter analysis, taken during beginning of flowering, could be used as an indicator thus making it possible to make corrections within the season, if needed. This study clearly showed variation in nutrient values among years and cultivars, whereas differences among plants of different age were not significant. It was concluded that the use of Nmin and leaf dry matter analyses combined might make corrections in nitrogen fertilization within the same year possible, and a new standard for leaf nutrient content, based on samples taken during beginning of flowering, was suggested..
机译：在一项四年的调查中，混合了两种氮气（n）供应的控制方法。 结果发现，NMIN分析可以用作从赛季开始的控制的测量，表明需要额外的N供应。 在开花开始期间拍摄的叶片干物质分析可以用作指标，从而可以在需要的情况下使其可以在本赛季中进行校正。 本研究清楚地表明多年和品种之间营养值的变化，而不同年龄植物之间的差异并不重要。 得出结论是，使用Nmin和叶片干物质分析的使用可能在同一年内进行氮肥矫正，并提出了基于开花开始期间采取的样品的叶营养含量的新标准。

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