The porosity distribution is related to the basement faults, the lithofacies of the reservoirs and the weathering and leached zone.

其分布与早第三纪生油期前基本结束活动的基岩断裂发育带、储集岩的岩性岩相及古风化淋滤带有关。

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In the course of alteration, the unstable elements in supergene zone are leached out in quantity, but the stable ones are relatively enriched.

在蚀变过程中，那些在表生条件下不稳定或较不稳定的元素大量流失，而那些稳定或较稳定元素则很少流失或相对富集。

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In the condition of spring irrigation and concentrated rainfall, the soil desalinized in root zone, and the accumulated salt due to saline water irrigation can be leached;

在春季河灌和汛期集中降雨淋洗的条件下 ，作物根层土壤不积盐 ；

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