当前位置: 首页 > 文章 > 不同施氮水平下的小麦冠层光谱特征及产量分析 土壤通报 2005,36 (1) 26-29
Position: Home > Articles > Relationships between Characteristics of Wheat Canopy Reflectance and Wheat Yields under Different N Levels Chinese Journal of Soil Science 2005,36 (1) 26-29

不同施氮水平下的小麦冠层光谱特征及产量分析

作  者:
任红艳 ;潘剑君;张佳宝
单  位:
南京农业大学资源与环境学院;中国科学院南京土壤研究所 江苏南京210095
关键词:
小麦;氮素水平;冠层高光谱反射;微分;相关性
摘  要:
分析了在不同氮肥施用水平下,小麦冠层的高光谱响应在几个生育期内的变化情况,以及它们与小麦产量之间的关系。采用微分技术处理了小麦冠层反射光谱,提高了其区分小麦氮素营养水平的灵敏性;利用F-检验及方差分析与相关分析,研究小麦氮素处理水平、冠层反射光谱及其衍生信息(光谱反射率的一阶微分数据、归一化植被指数)、小麦产量三者之间的相关关系。研究结果表明,一阶微分技术能够提高小麦冠层光谱数据对氮素营养水平的响应,光谱数据的衍生形式也可与小麦产量建立很好的回归方程。
译  名:
Relationships between Characteristics of Wheat Canopy Reflectance and Wheat Yields under Different N Levels
作  者:
REN Hong - yan PAN Jian - jun,ZHANG Jia - bao (College of Resource and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095; Nanjing Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008)
关键词:
Wheat; N levels; Canopy hyper - spectral reflectance; Derivative; Correlativity
摘  要:
We studied hyper - spectral reflectance data of growth - development periods under different N levels and relationships between the reflectance data and wheat yields. Derivative spectrum technique was applied to enhance the wheat canopy reflectance responsibility to different N levels. By F - test, variance analysis, correlation analysis, the correlation between, canopy spectral reflectance formations (derivatives, NDVI) and yield were analyzed. The results indicated that the derivative of hyper - spectral reflectance could increase the ability of distinguishing the N levels and the formations of hyper - spectral reflectance data could also be used in setting up a regression equation to predict wheat yield.

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