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- Title
淹水胁迫下棉花叶片高光谱特征及叶绿素含量估算模型.
- Authors
徐道青; 刘小玲; 王维; 陈敏; 阚画春; 李常凤; 郑曙峰
- Abstract
In order to rapidly monitor chlorophyll content in cotton functional leaf, and establish the quantitative relationship between chlorophyll content and spectral characteristic parameter of single cotton leaf, cotton was pot cultivated in a rain-shelter and subjected to waterlogging at squaring stage. Cotton leaf samples were taken and measured every 3 days after waterlogging. The correlation between chlorophyll content and spectral characteristic parameter was synthetically analyzed, and then the estimation model of chlorophyll content was established and verified. The results showed that the chlorophyll content decreased with increasing waterlogging stress. The original spectral reflectance and first-order differential spectral reflectance was negatively correlated with the chlorophyll content in the band near 580 and 697 nm. The estimation model established by difference vegetation index and normalized difference vegetation index performed better than that established by linear model of single band. Furthermore, the estimation model with (DR697-DR738)/(DR697+DR738) as the independent variable fitted the best with the correlation coefficient of 0.814, which could be utilized to estimate chlorophyll content of single leaf under waterlogging stress.
- Publication
Yingyong Shengtai Xuebao, 2017, Vol 28, Issue 10, p3289
- ISSN
1001-9332
- Publication type
Article
- DOI
10.13287/j.1001-9332.201710.013