Character Analysis of Canopy Spectral Changes of Corn at Jointing Stage under Waterlogging Stress
Yan Bingdun
Sui Xueyan
Wang Meng
Hou Xuehui
Chen Zhen
Yao Huimin
Liang Shouzhen
Abstract：Using plot simulation test with the corn at jointing stage as research object,the influences of different flooding times on corn canopy spectrum reflectance and vegetation indexes were analyzed under con-tinuous irrigation imitating flooding condition.The results showed that with the increase of flooding time,the corn canopy spectrum reflectance at red band (565 ~707 nm)increased,and those at blue band (400 ~480 nm),green band (513 ~564 nm)and near red band gradually reduced.Especially at the near red band,the flooding time and spectrum reflectance showed a significantly negative correlation.At the same time,the RVI, NDVI,and DVI were set up to monitor the corn growth situation under different flooding times.At early flood-ing stage,the three indexes grew rapidly,and then declined in different levels at late flooding stage when the corn went into the water stress state.Among which,the change of DVI was the most obvious which could be used to evaluate corn flooding degree.
Keywords：CornJointing stageFloodingCanopy spectrumVegetation indexRemote sensing monitoring
Publication Date：2016-05-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：3( 28-30 )