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The relationships between the ground-measured winter-wheat yield and the yield predicted using the PBI, H, and HCSM in different growth stages of winter wheat. (a–c) show the relationships between the measured yield and the yield predicted using the PBI, H, and HCSM at the jointing stage, respectively; (d–f) show the same as (a–c) for the flagging stage; and (g–i) show the same as (a–c) for the flowering stage.
