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The feasibility of determining foliar nitrogen, phosphorus and potassium contents using existing hyperspectral technologies in wild blueberry fields.

机译:使用现有的高光谱技术在野生蓝莓田中测定叶面氮,磷和钾含量的可行性。

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摘要

The ability of hyperspectral technologies to estimate wild blueberry leaf tissue N, P and K levels was investigated during the 2004-2005 growing seasons. Soil applied N, P and K were applied in the spring of 2004, and influenced foliar N, P and K contents only at tipdieback. There was no effect of the treatments and no significant correlations of foliar N, P and K levels with respect to berry yield. However, the foliar nutrient levels did provide useful insights on plant growth and development. Foliar nutrient level estimations were obtained using a CASI sensor, Personal II radiometer and FieldSpec Pro radiometer. Only N and P levels could be accurately determined. NDVI was inadequate in quantifying N levels. Challenges with data collection, processing and statistical analysis were limiting factors. If remote sensing is to be further studied in wild blueberries, field level use of radiometers appears to be justified.
机译:在2004年至2005年的生长季节,研究了高光谱技术估算野生蓝莓叶片组织N,P和K水平的能力。 2004年春季施用了土壤中的氮,磷和钾,仅在tip回时影响叶面氮,磷和钾的含量。处理没有效果,叶面氮,磷和钾水平与浆果产量无显着相关性。但是,叶面营养水平确实为植物生长和发育提供了有用的见识。使用CASI传感器,Personal II辐射计和FieldSpec Pro辐射计获得叶面营养水平的估算值。只能准确确定N和P水平。 NDVI不足以量化N水平。数据收集,处理和统计分析方面的挑战是限制因素。如果要在野生蓝莓中进一步研究遥感,则在辐射计的现场水平使用似乎是合理的。

著录项

  • 作者

    Bourguignon, Camille.;

  • 作者单位

    Dalhousie University (Canada).;

  • 授予单位 Dalhousie University (Canada).;
  • 学科 Agriculture Agronomy.;Agriculture Plant Pathology.
  • 学位 M.Sc.
  • 年度 2007
  • 页码 148 p.
  • 总页数 148
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 非洲史;
  • 关键词

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