Water deficit is influenced by the level of soil water potential at the root surface.
水分亏缺是受根系表面土壤水势高低影响的。
Data from experiments carried out in peach field were analyzed and the patterns of soil water potential variation described.
主要从试验观测资料入手，首先讨论了桃树各处理的土水势的情况。
And the transpiration rate, organ water potential, photosynthesis rate, growth rate will decrease with the fall of soil water potential.
数值分析还表明当土壤水势逐步下降时，蒸腾速率、组织水势、光合速率、生长速率都不断下降。
According to the differences of soil water potential in the farmland, variable irrigation can save water as well as raise economic benefit.
依据农田内土壤含水率的差异性，有针对性地进行变量灌溉，既可节约用水又可提高经济效益。
The relationships between soil water potential and leaf water potential, and those between leaf water potential and photosynthesis were studied.
同时也分析了土水势和叶水势的关系，叶水势与光合作用的关系等。
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 model can predict not only the soil water dynamic profiles and the soil water potential profiles, but the changes of the effective root density with depth and time.
该模型除能预报根系吸水的一些水分动态和水势动态外，还能预报有效根密度的时空变化。
The model can predict not only the soil water dynamic profiles and the soil water potential profiles, but the changes of the effective root density with depth and time.
该模型除能预报根系吸水的一些水分动态和水势动态外，还能预报有效根密度的时空变化。
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