通过对不同浓度尿素的喷施试验，得出草坪草叶面喷施尿素的最佳浓度在３％左右。喷施尿素后，草坪草叶片立即大量吸收氮使叶内含氮量迅速增加。在一定范围内，喷施浓度越高，吸收量也越多，吸收也越快。各草种叶片对氮的吸收能力有差异。草地早熟禾、结缕草、野牛草在喷后第１天和第５天有２次吸收高峰，白颖苔草只呈现１次高峰。 Through the spray test of different concentrations of urea, the optimal concentration of urea sprayed on the foliage of turf grass is about 3%. Spraying urea, turfgrass leaves a large number of immediate absorption of nitrogen so that the leaf nitrogen content increased rapidly. In a certain range, spray higher concentration, absorption more, absorb faster. Each grass species of nitrogen absorption capacity of the differences. Poa pratensis, Zoysia japonica and Bison grass had two absorption peaks on the first and the fifth day after sprayed, while the Crataegus pinnatifida showed only one peak.