压力室法测定得到的值实际上是质外体的基质势（the matric potential of the apoplast）, 它与总水势（total water potential）相等或相似的前提是 1）质外体与相邻共质体之间的液体交流阻力很小，它们之间可以迅速达到平衡；2）质外体渗透势接近于0 。
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Sometime the matrix potential of soil water, moisture capacity and the total content of salt capacity in the soil have the same trends of change with depth.
在包气带剖面中，在某时刻水土势、含水量、含盐量随深度变化的趋势相同。
Irrigated water accounts for more than 70% of the total water use in China, so water-saving potential is great.
在我国，农业产生用水占总用水量的70%以上，节水潜力很大。
Executes the nitrogen total quantity to raise the wheat 12 starch subsidence value, the bread flour inflation potential and the bread flour alkaline water confining force influence is remarkable.
施氮总量对扬麦12淀粉沉降值、面粉膨胀势和面粉碱性水保持力影响显著。
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