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小麦叶片的衰老,发生在开花以后的时期内。叶的衰老引起冠层光合率从开花期的最大值而迅速下降,当籽粒干重正在迅速增加时所发生的光合活性的这种下降,可以引起对于产
Senescence of wheat leaves occurs after the flowering period. Leaf senescence causes the canopy photosynthetic rate to decrease rapidly from the maximum at anthesis, and this decrease in photosynthetic activity that occurs when the dry weight of the kernel is rapidly increasing can lead to a decrease in photosynthetic rate