In accordance with the principle of chemical dynamics, a new evaluation method for rate of ammonification of urea was established, and the type of reaction of ammonification of urea was confirmed.

• 根据化学反应动力学原理,建立了尿素氨化速度的评价方法,确定了尿素氨化反应的级数,测定了普通尿素、缓释尿素在特定条件下的氨化反应常数和半衰期,并依此评价了涂层缓释尿素的缓释性能。