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图4 不同田间配置冠层相对湿度的日变化（2017） A：孕穗期;B：齐穗期;C：齐穗后20 d

Fig. 4 Diurnal variation of canopy relative humidity under different field allocation patterns in 2017 A: Booting stage; B: Heading stage; C: 20 d after heading stage