If no drainage system exists, the water table rises, bringing dissolved salts to the surface.

如果没有排水系统，地下水位就会上升，把溶解的盐带到地表。

youdao

For example, cheap forms of irrigation have depleted the water table in many farm areas of India, while at the same time adding near-toxic levels of salts from fertilizers to the soil.

例如成本低廉的灌溉方式已经使印度很多地区的地下水干涸，化肥中高剂量的盐分残留在土壤内。

youdao

For example, cheap forms of irrigation have depleted the water table in many farm areas of India, while at the same time adding near-toxic levels of salts from fertilizers to the soil.

例如成本低廉的灌溉方式已经使印度很多地区的地下水干涸，化肥中高剂量的盐分残留在土壤内。

youdao