Scientia Agricultura Sinica ›› 2004, Vol. 37 ›› Issue (11): 1743-1748 .

• RESEARCH NOTES • Previous Articles     Next Articles

plication of Canopy Spectral Reflectance in Monitoring Nitrogen Status of Winter Wheat

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  1. 中国农业科学院农业资源与农业区划研究所
  • Received:2003-09-01 Revised:2004-01-18 Online:2004-11-20 Published:2004-11-20

Abstract: The objective of this study was to make clear whether remote sensing technology can be used to monitor N status of winter wheat. Results from three field experiments in 1997 to 1999 showed that there was a remarkable effect of N rate on wheat canopy spectral reflectance, especially on the red and infrared bands. Ratio vegetation index(RVI) had a remarkable linear correlation with SPAD value and plant tissue nitrate concentration, which implies that RVI is a good indicator of plant N nutrition.

Key words: Nitrogen, Spectral reflectance, Chlorophyll, Nitrate, Winter wheat

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