CLC number: Q945.1
On-line Access: 2024-08-27
Received: 2023-10-17
Revision Accepted: 2024-05-08
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ZHOU Qi-fa, WANG Ren-chao, SHEN Zhang-quan, WANG Xiu-zhen, YU Jun-ping. VERTICAL LEAF SPECTRAL VARIATION AS AN INDICATOR OF NITROGEN NUTRITION STATUS IN RICE PLANTS[J]. Journal of Zhejiang University Science A, 2001, 2(3): 289-293.
@article{title="VERTICAL LEAF SPECTRAL VARIATION AS AN INDICATOR OF NITROGEN NUTRITION STATUS IN RICE PLANTS",
author="ZHOU Qi-fa, WANG Ren-chao, SHEN Zhang-quan, WANG Xiu-zhen, YU Jun-ping",
journal="Journal of Zhejiang University Science A",
volume="2",
number="3",
pages="289-293",
year="2001",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2001.0289"
}
%0 Journal Article
%T VERTICAL LEAF SPECTRAL VARIATION AS AN INDICATOR OF NITROGEN NUTRITION STATUS IN RICE PLANTS
%A ZHOU Qi-fa
%A WANG Ren-chao
%A SHEN Zhang-quan
%A WANG Xiu-zhen
%A YU Jun-ping
%J Journal of Zhejiang University SCIENCE A
%V 2
%N 3
%P 289-293
%@ 1869-1951
%D 2001
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2001.0289
TY - JOUR
T1 - VERTICAL LEAF SPECTRAL VARIATION AS AN INDICATOR OF NITROGEN NUTRITION STATUS IN RICE PLANTS
A1 - ZHOU Qi-fa
A1 - WANG Ren-chao
A1 - SHEN Zhang-quan
A1 - WANG Xiu-zhen
A1 - YU Jun-ping
J0 - Journal of Zhejiang University Science A
VL - 2
IS - 3
SP - 289
EP - 293
%@ 1869-1951
Y1 - 2001
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2001.0289
Abstract: A field experiment was conducted to study the response of individual leaf spectral reflectance to five levels of nitrogen fertilizer treatments in rice(Oriza sativa L.) plants. Sampling was combined through a rice canopy at upper, medium and low levels for biomass, nitrogen and water content measurements with spectral signals from the leaves. The vertical gradients of leaf biomass,nitrogen and water contents were associated with the nitrogen availability during tillering, panicle formation, initial heading and heading. rice plants treated with the lowest rate of N could be characterized with the lowest value of gradient in leaf biomass and leaf water content and the highest value of gradient in leaf N concentration. A spectral gradient of single reflectance(R),ratio(RVI) and normalized difference(ND) of two individual reflectances was defined as this yielded a better relationship between the spectral data and leaf nitrogen concentration. The results suggested the spectral gradients may be used as an improved diagnostic tool for nitrogen status.
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