“extensive cultivation”造句，怎麼用extensive cultivation造句

The Yue people in Lingnan have gradually changed the extensive cultivation methods of fire-ploughing and water mattress, which has brought epoch-making changes to agricultural production in Yue areas.

Through our research, we think the main driving forces that resulted in the change of land use type were immigration, planting the high yield crops, favored cultivation policy and extensive cultivation, etc.

At the beginning of the Han Dynasty, Lingnan region lagged behind the Central Plains in the backward mode of production with extensive cultivation and low harvest, and its living standard was very low.