起初,人们用化学方法或物理方法将自然界含有肥价的矿石加工制成的无机化合物称为化学肥料。如硫酸铵、过磷酸钙、磷矿粉、氯化钾等。当时,化学肥料与无机肥料、矿质肥料是同义语。本世纪四十年代,作为有机化合物的尿素加入了肥料行列,于是将其统称为化学肥料,简称化肥。 Initially, chemical compounds or physical methods were used to refer to inorganic compounds made from naturally occurring ores containing ores as chemical fertilizers. Such as ammonium sulfate, superphosphate, phosphate rock, potassium chloride and so on. At that time, chemical fertilizers and inorganic fertilizers, mineral fertilizers are synonymous. Forty years of this century, as an organic compound of urea added to the ranks of the fertilizer, so collectively referred to as chemical fertilizers, referred to as fertilizer.