中国农业科学 ›› 2007, Vol. 40 ›› Issue (5): 987-994 .

• 园艺 • 上一篇    下一篇

烤烟叶片高光谱参数与多种生理生化指标关系研究

李向阳,刘国顺,杨永锋,赵春华,喻奇伟,宋世旭   

  1. 河南农业大学国家烟草栽培生理生化研究基地
  • 收稿日期:2006-02-17 修回日期:1900-01-01 出版日期:2007-05-10 发布日期:2007-05-10
  • 通讯作者: 刘国顺

Relationship between biological character and parameters of hyperspectra of tobacco leaves

  

  1. 河南农业大学国家烟草栽培生理生化研究基地
  • Received:2006-02-17 Revised:1900-01-01 Online:2007-05-10 Published:2007-05-10

摘要: 【目的】为了快速、准确的检测烤烟叶片生理生化指标,获取烟田施肥和烤烟生长信息。【方法】通过不同施氮、钾量试验,采用ASD Field spec FR 2 500光谱仪,分析不同处理烤烟叶片光谱特性,同时运用相关分析、逐步回归分析等统计方法,研究了不同营养水平下烤烟叶片高光谱遥感特征参数与烟叶生物化学成分(总氮、叶绿素、类胡萝卜素)和生理指标(鲜叶重、干叶重、含水率)之间的关系。【结果】不同氮、钾处理间叶片光谱曲线差异较大、规律明显。叶片多种高光谱参数与10种生理生化指标之间的相关性较强,通过逐步回归方程筛选出了叶片10种生理生化指标的高光谱特征变量,其中与7种生化成分关系最密切的光谱特征变量均是红边面积与蓝边面积比值SDr/SDb,建立的回归方程的的复确定系数和回归系数相伴概率显著性都达到0.05水平,同时通过检测样本的检验,估测效果较好。【结论】因此,可利用这些变量建立的估测模型对烤烟叶片中多种生理生化指标进行快速测定,同时可根据叶片高光谱特性初步监测烟田氮钾施用量和烤烟生长状况。

关键词: 烤烟, 叶片, 高光谱参数, 生理生化指标

Abstract: The experiment studied the relationships between biochimacal contents(Total Nitrogen, Chlorophyll, Carotenoid) and biophysical characters(Fresh Weight, Dry Weight, Moisture Content) and characteristic parameters of hyperspectra.the results showed that the correlations between all the biological parameters of leaves and characteristic parameters of spectral were good. Variables of hyperspectra were found out through stepwise regression, and the regression coefficients of equations got 0.01 siginificance level .There were good estimative effections through the examination of other tobacco leaves. As a result, the estimative models of these variables could mensurate many kinds of biological parameters quickly and without damage, so that the besement of real time inspection on tobacco field is set out by this research.

Key words: tobacco leaves, the parameters of hyperspectra, biological character, relationship