cultivation
n[U]
cultivating (cultivate 1) or being cultivated 耕作; 耕种
the cultivation of the soil 耕作
land that is under cultivation, ie is being cultivated 耕种的土地
bring land into cultivation 开垦荒地.
This exhibition received a great deal of attention in the press, for though the pictures were supposed to be the work of famous artists, they had in fact been painted by Dickie.