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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (18): 119-122.

所属专题： 油料作物

• 农学 农业基础科学 • 上一篇    下一篇

大豆光谱反射率与地上干物重对数回归分析

宋英博   

  • 收稿日期:2010-04-09 修回日期:2010-07-19 出版日期:2011-09-20 发布日期:2011-09-20
  • 基金资助:
    黑龙江省国际合作资助项目

Analysis of logistic regression with reflectance and dry matter accumulation in above-ground part

  • Received:2010-04-09 Revised:2010-07-19 Online:2011-09-20 Published:2011-09-20

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摘要： 摘要：研究目的：从统计学角度分析地上部干物重与叶片反射光谱特征的定量关系；方法：通过对近红外和可见光波段光谱反射率的分析, 确立不同时期大豆地上部干物重的敏感波段，计算出相应的植被指数,并建立植被指数与大豆地上部干物质量预测模型；结果表明：通过RDVI（1005，510nm）植被指数建立对数模型，方程为：y = -295.83Ln(x) - 123.05；结论：此模型能较好的描述大豆合农60光谱反射率与干物重的关系。

关键词: 莲子, 莲子, 淀粉, 糊化, 特性

Abstract: Abstract: 【OBJECTIVE】≈From a statistical point of view of shoot dry weight and leaf reflectance spectral characteristics of the quantitative relationship; 【METHOD】≈The characteristic spectral wavebands for indicating the dry matter accumulation in above-ground part of soybean were determined by analyzing spectra reflectance of near infrared light and visible light, and the prediction model which about vegetation indices and the dry matter accumulation in above-ground part of soybean in different growth stages was established; 【RESULTS】≈The results showed that the corresponding logistic prediction model established by vegetation indices of RDVI（1005,510nm）was y = -295.83Ln(x) - 123.05；【CONCLUSION】≈The Model could be accurate to predict the dry matter accumulation in above-ground part of soybean .