When combined engineering and agronomic methods to improve the salt land in Binhai area which total salt content was over 3%, the width of experimental field play roles for the improvement effect.

采取工程措施与农艺措施相结合的方法，对全盐含量3%以上的滨海盐土进行改良。

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Saline soil with salt content greater than 0.3% is widely distributed and accounts for 77.7% of the total irrigated area.

灌区盐碱土以全盐量大于0.3％的中度以上盐碱土分布较广，占灌区面积的77.7％。

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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。

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