"fertile land" is not an idiom, but a similar idiom is "fertile land".

fertile land

féi tián wò dì

Explaining fertile land

It comes from Mao Zedong's China Revolution and China's * * * Production Party: "On this vast territory, there is a vast fertile land, which provides us with a source of food and clothing."

Structural joint idiom

Usage as subject, object and attribute; Used in agriculture and other

antonym barren land.