Correlation analysis As shown in Figure 6 , the NAG (N accumulation amount in grain), NAL (N accumulation amount in leaf), NAP (N accumulation amount in plant), LAGR (leaf area growth rate), DMAR (dry matter accumulation rate), LIR (light interception rate of population), NS(number of population spikelets), FSE (fruiting spikelets per ear), GFRE (grain filling rate per ear), and Y (yield) were all significantly (p<0.05) positively correlated with each other, indicating that there were positive (significant or markedly significant) mutual promotion interactions among each factor.
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Optimized N application improves N absorption, population dynamics, and ear fruiting traits of wheat.
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