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- W2348791422 abstract "Leaf chlorophyll content is an important parameter for the evaluation of wheat growth and it is of great significance to achieve rapid,non-destructive,accurate chlorophyll content estimation.The variation of the winter wheat canopy spectra and SPAD value in different stages were analyzed,and the best vegetation index to estimate wheat leaf SPAD at different growth stages was finally decided by comparing the correlation between 16 kinds of high spectral index and SPAD value.The results showed that the winter wheat SPAD value increased at first and then decreased rapidly and the maximum occurred at grain filling stage within the entire growth period.By comparing the correlation between 16 kinds of high spectral index and SPAD value,there was a high correlation between optimized soil adjusted vegetation index(OSAVI) and winter wheat SPAD value at jointing stage and a quantitative model was established,its accuracy was 0.74;There was a high correlation between leaf chlorophyll index(LCI) and winter wheat SPAD at booting and flowering stages,and their accuracy were 0.72 and 0.79.The same as R700 at filling stage and REP at Milky stage,their accuracy were 0.70 and 0.69.Thus,technical support is provided for dynamic monitoring and managing winter wheat at the different growth stages." @default.
- W2348791422 created "2016-06-24" @default.
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- W2348791422 date "2013-01-01" @default.
- W2348791422 modified "2023-09-23" @default.
- W2348791422 title "The spectral characteristics and the best model for chlorophyll content at winter wheat growth stages in arid land" @default.
- W2348791422 hasPublicationYear "2013" @default.
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