An experiment of urease activity and leaching from soil colu mn showed that the fertilizer could r educe urease activity and the fixation of P content.

• 经脲酶活性测定及土柱渗滤实验表明,该肥料能降低脲酶活性,减少土壤对磷的固定,提高肥料的利用效率,减轻因常规化肥施用对生态环境的影响。