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。
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。
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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