Plants rarely achieve their full photosynthetic potential, due to water shortage and to variation in the intensity of radiation.
植物很难获得它们完全的光合作用潜能，是由于水短缺和辐射强度的改变。
The net photosynthetic rate was in accord with both stomatal conductance and water potential.
净光合率的提高与气孔导度及水势的提高有一致趋势。
The photosynthetic rate of the leaves declined with the decrease of soil water potential, but drought-resistant varieties reduced less than drought-sensitive ones.
叶片光合速率随土水势的下降而减小，抗旱性品种减小的幅度小于抗旱性较差的品种。
The photosynthetic rate of the leaves declined with the decrease of soil water potential, but drought-resistant varieties reduced less than drought-sensitive ones.
叶片光合速率随土水势的下降而减小，抗旱性品种减小的幅度小于抗旱性较差的品种。
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