| 谢伯承,薛绪掌,王纪华,王国栋.土壤参数的光谱实时分析[J].干旱地区农业研究,2005,(3):54~57 |
| 土壤参数的光谱实时分析 |
| Analysis of soil parameters by spectrum reflectance |
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| DOI：10.7606/j.issn.1000-7601.2005.03.12 |
| 中文关键词: 土壤参数 土壤反射率 精准农业 |
| 英文关键词:soil parameter spectral reflectance precision agriculture |
| 基金项目:北京市科技新星计划(H020821340130) |
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| 中文摘要: |
| 使用ASDFR2500便携光谱仪对国家精准农业示范区原状土土壤水分、有机质、NO-3、EC和pH等参数进行了野外测定测评。用原反射率倒数的对数(A值)分别与各土壤参数建立的直线相关模型均取得较好相关结果。分析认为土壤有机质的测定选用762nm波段,NO-3光谱吸收波段在431nm时相关性最好,电导率选用1414nm作为测定波段为最佳。这些模型可作为土壤参数估测和评价的参考。 |
| 英文摘要: |
| The spectrophotometer ASDFR2500 and spectroscopic techniques were applied for field mensuration to evaluate the soil parameters with the undisturbed soil samples collected in Xiaotangshan. Correlation and regression analysis was conducted to describe the relationship of soil spectral reflectance with soil moisture, SOM, NO-3-N, EC and pH, respectively. The results showed that all these soil parameters could be well evaluated by A value (the logarithm of reciprocal of reflectivity) by using linear regression models. These models would be available for evaluating and predicting soil parameters by spectrum reflectance, and would provide guidance to the management of soil nutrients and the prediction of fertility in precision agriculture. |
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