移动激光诱导分解光谱技术用于准确农业的未来应用 - - 一个案例研究
Alexander Erler1, Daniel Riebe1, Toralf Beitz1
1Physical Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany.
Sensors (Basel, Switzerland)
|August 26, 2023
概括
激光诱导分解光谱 (LIBS) 准确地估计了用于精密农业的土壤营养素和特性. 现场部署的LIBS仪器显示出对现场土壤分析的前景,使得有针对性的施肥策略成为可能.
科学领域:
- 农业科学 农业科学
- 分析化学 分析化学
- 地质科学是地球科学.
背景情况:
- 精准农业依赖于准确的土壤参数估计,用于针对性干预,如特定地点的施肥.
- 激光诱导分解光谱 (LIBS) 为快速,现场土壤分析提供了一个潜在的方法.
研究的目的:
- 评估LIBS用于确定各种土壤参数的有效性,包括宏观和微量营养素,土壤有机物质和质地.
- 为了比较手持和平台LIBS光谱仪与实验室仪器的性能,以在现场应用.
主要方法:
- 使用手持式,平台式和实验室式LIBS仪器调查了68个土壤样本.
- 应用多变量统计方法,包括特征选择和回归技术 (PLS,PCR,SVM,拉索,高斯过程),用于土壤参数预测.
- 将LIBS结果与实验室分析进行比较以验证.
主要成果:
- 对 (K),铁 (Fe) 和粘土含量的预测精度非常好.
- 对于 (Ca), (Mg), (P), (Mn),铜 (Cu) 和泥含量,观察到良好的预测准确度.
- 现场部署的LIBS仪器提供了与高分辨率实验室光谱仪相当的可靠结果,表明了现场应用的潜力.
结论:
- 在精准农业中,LIBS是一种可行的技术,用于快速地在现场估计基本的土壤参数.
- 成功将LIBS方法转移到现场测量中,有助于有针对性的营养管理和优化肥料策略.
- 这项研究证明了LIBS在提高土壤分析效率和支持可持续农业实践方面的潜力.
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