Any of a large number of natural and synthetic materials, including manure and nitrogen, phosphorus, and potassium compounds, spread on or worked into soil to increase its capacity to support plant growth.

• 肥料包括烘肥以及氮、磷和钾化合物等任何大量的自然或合成原料，撒于土壤上或翻入土壤中以增加其供给植物生长的能力