The soil is depleted first by crops grown in it and second by bacterial action.

土壤首先被其中生长的农作物消耗，其次被细菌活动消耗。

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

Plus, the soil is depleted, right? Meaning that it's less useful for growing food.

加速了土壤变质，对吗？意味着这样的土壤对作物生长没有用。

youdao

The response to depleted soil is to heap on more synthetic fertilizers, which are made primarily with petroleum (not exactly a price-secure resource).

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But wheat yields per acre grew worse if anything as soil nutrients were depleted.

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