他们不合理开掘土地，导致可培养的土地减退的翻译：They are not reasonable necessary to develop the land, led to reduced land available for cultivation 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

They dig unreasonable land, resulting in loss of land can be cultivated

They are not reasonable necessary to develop the land, led to reduced land available for cultivation

They dig the land not reasonably, causes land decrease which may raise

They are not reasonable opening land, which could lead to cultivate the land receded

They are not reasonable necessary to develop the land, led to reduced land available for cultivation