Nitrogen Status Determination of Rice by Leaf Chlorophyll Fluorescence and Reflectance Properties
文献类型: 外文期刊
作者: Hu, Hao 1 ; Zheng, Kefeng 1 ; Zhang, Xiaoming 2 ; Lu, Yanting 2 ; Zhang, Hao 1 ;
作者机构: 1.Zhejiang Acad Agr Sci, Inst Digital Agr, Hangzhou 310021, Zhejiang, Peoples R China
2.Zhejiang Acad Agr Sci, Inst Crops & Nucl Technol Utilizat, Hangzhou 310021, Zhejiang, Peoples R China
关键词: Nitrogen Status;Leaf Reflectance;Chlorophyll Fluorescence;Rice;REP;F_v/F_m
期刊名称:SENSOR LETTERS ( 影响因子:0.558; 五年影响因子:0.58 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: An experiment was conducted under pot-culture conditions to determine rice nitrogen (N) status by leaf chlorophyll fluorescence and reflectance properties. Three rice cultivars, Zhejing 22, Zhejing 29 and Xiushui 09 were transplanted in 45 twelve-liter pots filled with local paddy soil. Each had three nitrogen rate, 0, 75 and 150 kg N ha~(-1). Fertilization application was carried out in tillering period and spectral reflectance, chlorophyll fluorescence and nitrogen content of the uppermost, fully expanded leaves were determined in jointing stage. Spectral reflectance indices R_(550) (Reflectance at 550 nm), REP (Red edge position), NRI (Nitrogen reflectance index), and PRI (Photochemical reflectance index) were well correlated with leaf nitrogen content of rice with the R~2 0.628-0.751**, 0.771-865**, 0.558-0.813** and 0.347*-0.589**. Chlorophyll fluorescence parameters F_v/F_m (Maximal photochemical efficiency of PSII) rather than F_0 (Initial fluorescence), F_m (Maximal fluorescence) and Yield (Light adapted quantum yield) also can predict leaf nitrogen status, but the determine coefficient was lower in comparison with spectral indices REP, R_(500) and NRI. Reflectance measurements show better performance in estimating nitrogen status than chlorophyll fluorescence methods. There was close linear relation between F_m and leaf spectral reflectance in the range of 400-1100 nm. In conclusion, leaf reflectance indices R_(550), REP, NRI, PRI and chlorophyll fluorescence parameters F_v/F_m may be useful for rapid, timely and non-destructive estimation of rice leaf N status.
- 相关文献
作者其他论文 更多>>
-
Unmanned aerial vehicle-based assessment of rice leaf chlorophyll content dynamics across genotypes
作者:Gu, Qing;Lou, Weidong;Zhu, Yihang;Hu, Hao;Zhao, Yiying;Zhou, Hongkui;Zhang, Xiaobin;Huang, Fudeng
关键词:Oryza sativa L.; Chlorophyll content; Phenotype; Unmanned aerial vehicle; Variety classification
-
Methylglyoxal scavenging capacity of fiber-bound polyphenols from highland barley during colonic fermentation and its modulation on methylglyoxal-interfered gut microbiota
作者:Li, Jinxin;Zhu, Ling;Wu, Gangcheng;Zhang, Hui;Zhang, Hao;Liu, Wei;Yang, Xijuan;Zhang, Hui
关键词:Bound phenolic compounds; Methylglyoxal; Gut microbiota; Colonic fermentation; Scavenging capacity
-
Biomass Estimation of Milk Vetch Using UAV Hyperspectral Imagery and Machine Learning
作者:Hu, Hao;Zhou, Hongkui;Lou, Weidong;Gu, Qing;Hu, Hao;Zhou, Hongkui;Lou, Weidong;Gu, Qing;Cao, Kai;Wang, Jianhong;Zhang, Guangzhi
关键词:UAV; milk vetch; above-ground biomass; hyperspectral imagery; machine learning
-
RL99 Was Essential for High Yield Formation by Regulating Leaf Morphogenesis and Root Development in Rice
作者:Ye, Shenghai;Liu, Menglin;Zhai, Rongrong;Ye, Jing;Wu, Mingming;Zhu, Guofu;Zhang, Xiaoming
关键词:Rice; Leaf rolling; Yield; Root; BR
-
A mitochondrion-associated PPR protein, WBG1, regulates grain chalkiness in rice
作者:Wu, Mingming;Zhai, Rongrong;Ye, Jing;Zhu, Guofu;Yu, Faming;Ye, Shenghai;Zhang, Xiaoming;Cai, Maohong
关键词:grain chalkiness; rice; wbg1; white belly; mitochondrion; grain width
-
Improving grain yield prediction through fusion of multi-temporal spectral features and agronomic trait parameters derived from UAV imagery
作者:Zhou, Hongkui;Lou, Weidong;Sheng, Li;Li, Dong;Hu, Hao;Yang, Jianhua
关键词:yield prediction; agronomic trait; remote sensing; UAV; machine learning
-
Glutaredoxin in Rice Growth, Development, and Stress Resistance: Mechanisms and Research Advances
作者:Zhai, Rongrong;Ye, Shenghai;Ye, Jing;Wu, Mingming;Zhu, Guofu;Yu, Faming;Zhang, Xiaoming;Wang, Xingyu;Feng, Yue
关键词:glutaredoxin (GRX); rice; growth development; stress resistance; breeding utilization