Monitoring Canopy Nitrogen Status in Winter Wheat of Growth Anaphase with Hyperspectral Remote Sensing
文献类型: 外文期刊
第一作者: Tang Qiang
作者: Tang Qiang;Li Shao-kun;Wang Ke-ru;Chen Bing;Wang Fang-yong;Diao Wan Ying;Xiao Chun Hua;Tang Qiang;Li Shao-kun;Wang Ke-ru;Xie Rui-zhi;Chen Bing;Wang Fang-yong;Xiao Chun Hua
作者机构:
关键词: Nitrogen richness(NR);Reflectance difference(Delta R);Winter wheat;Model;Monitoring
期刊名称:SPECTROSCOPY AND SPECTRAL ANALYSIS ( 影响因子:0.589; 五年影响因子:0.504 )
ISSN: 1000-0593
年卷期: 2010 年 30 卷 11 期
页码:
收录情况: SCI
摘要: Biomass leaf area Index (LA!) and nitrogen status are important parameters for indicating crop growth potential and photosynthetic productivity in wheat Nondestructive quick assessment of leaf dry weight LAI and nitrogen content is necessary for nitrogen nutrition diagnosis and cultural regulation in wheat production. In order to establish the monitoring model of nitrogen richness in winter wheat of growth anaphase studying the relationship between the nitrogen richness (NR) containing nitrogen density LAI and leaf dry weight and the difference of hyperspectral reflectance rates (Delta R) we conducted a comparable experiment with five winter wheat varieties under nitrogen application level of 0 100 200 and 400 kg N ha(-1) The results indicated the NRs of the different varieties of winter wheat leaves increased with increasing growth stage while in the different nitrogen levels it was sequenced as N0>N3>N1>N2 Twelve vegetation indices were compared with corresponding NR The NR had significantly negative correlation to TCARI and VD672 in those vegetation Indices and their correlations (r) arrived at 0 870 and 0 855 respectively The coefficients of determination (R(2)) of two models were 0 757 and 0 731 by erecting model with the two indexes and NR. Root mean square error (RMSE) relative error (RE) and determination coefficient between measured and estimated NR were employed to test the model reliability and predicting accuracy Accuracy rates of the models based on TCARI and VD672 achieved 84 56% and 80 13% The overall results suggested that leaf nitrogen status of growth anaphase in winter wheat has stable relationships with some vegetation indexes especially index of TCARI and VD672
分类号:
- 相关文献
作者其他论文 更多>>
-
Dynamics of maize grain drying in the high latitude region of Northeast China
作者:Chu Zhen-dong;Zhang Wan-xu;Hou Liang-yu;Li Shao-kun;Chu Zhen-dong;Ming Bo;Li Lu-lu;Xue Jun;Hou Liang-yu;Xie Rui-zhi;Hou Peng;Wang Ke-ru;Li Shao-kun;Chu Zhen-dong
关键词:grain drying; maize; Northeast China; two-segment linear model
-
Study of corn kernel breakage susceptibility as a function of its moisture content by using a laboratory grinding method
作者:Guo Ya-nan;Hou Liang-yu;Li Lu-lu;Gao Shang;Hou Jun-feng;Ming Bo;Xie Rui-zhi;Xue Jun;Hou Peng;Wang Ke-ru;Li Shao-kun;Guo Ya-nan;Hou Liang-yu;Li Shao-kun
关键词:corn variety; corn kernel; breakage susceptibility; moisture content; grinding method
-
Systemic regulation of photosynthetic function in maize plants at graining stage under a vertically heterogeneous light environment
作者:Wu Han-yu;Qiao Mei-yu;Jiang Chuang-dao;Wu Han-yu;Zhang Wang-feng;Wang Ke-ru;Li Shao-kun
关键词:light environment; photosynthesis; gas exchange; chlorophyll a fluorescence transient; reproductive growth
-
Current state and suggestions for mechanical harvesting of corn in China
作者:Xie Rui-zhi;Ming Bo;Gao Shang;Wang Ke-ru;Hou Peng;Li Shao-kun
关键词:
-
Historical trends in maize morphology from the 1950s to the 2010s in China
作者:Ma Da-ling;Yu Xiao-fang;Gao Ju-lin;Xie Rui-zhi;Li Shao-kun
关键词:maize yield; morphological characteristics; breeding direction; artificial selection; improved maize cultivars; mechanized farming
-
Difference in corn kernel moisture content between pre- and post-harvest
作者:Li Lu-lu;Bo, Ming;Jun, Xue;Shang, Gao;Wang Ke-ru;Xie Rui-zhi;Peng, Hou;Li Shao-kun
关键词:kernel moisture content; pre-harvest and post-harvest; corn
-
Yield gap and resource utilization efficiency of three major food crops in the world - A review
作者:Rong Liang-bing;Gong Kai-yuan;Rong Liang-bing;Gong Kai-yuan;He Jian-qiang;Yu Qiang;Rong Liang-bing;Gong Kai-yuan;Duan Feng-ying;Li Shao-kun;Zhao Ming;Zhou Wen-bin;He Jian-qiang;He Jian-qiang;Yu Qiang;Yu Qiang
关键词:food crops; yield; yield gap; resource utilization efficiency; yield-limiting factor