通过算例分析研究了土水势方程和网格算法的影响。
A case study was carried out to investigate the influences of the SWP equation and mesh schemes.
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。
Data from experiments carried out in peach field were analyzed and the patterns of soil water potential variation described.
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 relationships between soil water potential and leaf water potential, and those between leaf water potential and photosynthesis were studied.
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.
当土水势增量方程中忽略重力势变化的影响时，改进形式的控制方程和有限元方程即退化为相应的常用形式。
Ignored the influence of gravity potential's change on incremental SWP equation ignored, the governing and FEM equations of MBC theory can be simplified to be the corresponding forms of TBC theory.
指出毛管势理论对土壤孔隙形状的概化严重失实，对水驱动力种类考虑的不够全面；土水势理论的问题出现在对理论的过分简化上；
The problem of capillary potential theory is that the hypothesis of pore shapes in soil is far from reality and the type of driving force is not considered all-sidedly.
盐分非常显著地降低了土壤的水势，可以用盐化土样的水势与脱盐处理土样的水势估算盐化土样的渗透势。
Osmotic potential could be estimated by the difference between the potential of natural salt-affected soil and that of the salt-leached soil.
盐分非常显著地降低了土壤的水势，可以用盐化土样的水势与脱盐处理土样的水势估算盐化土样的渗透势。
Osmotic potential could be estimated by the difference between the potential of natural salt-affected soil and that of the salt-leached soil.
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