single crop farming

例句：

1. 1. The government is promoting single crop farming to reduce soil erosion.
   政府正在推广单一作物农业，以减少土壤侵蚀。
2. 2. The farmers are switching to single crop farming to increase yields.
   农民们正在转向单一作物农业，以提高产量。
3. 3.Single crop farming can lead to a shortage of nutrients in the soil.
   单一作物农业可能导致土壤中养分的短缺。