Regulation mechanism of photosynthetic performance in upper, middle, and bottom leaf groups of summer maize under salt stress Except for W k and Φ P0 in the bottom leaf group of R5, there was a significant or extremely significant correlation between the fluorescence parameters of each leaf group and the soil salt content of 0–40 cm at all other stages.
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Effects of tillage methods on photosynthetic performance of different functional leaf groups of summer maize in coastal saline-alkali farmland.
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