This field experiment was conducted to investigate the effects of different patterns of nitrogen distribution in a year on DM yields, botanical composition, N recovery rate, and chemical composition of the mixed sward of Orchardgrass and Italian ryegrass. The N-Distributions were ranged from 4 to l0 ㎏/10a, which were applied after each cut. However, in all treatments, the total amounts of N was 34 ㎏/l0a/year and the grasses was Gutted by 5 times. The results obtained were summarized as: 1. Generally, DM yields of each cut was affected significantly by N-distributions in a year, but total DM yields of each treatment was shown io be relatively less affected than DM yields of each cut. 2. The highest DM yields was obtained in $quot;heavy N-distribution in the spring (10-8-6-4-6 ㎏/cut), but the lowest in $quot;heavy N-distribution in the summer (4-6-8-10-6 ㎏/cut).$quot; However DM yields in $quot;equal N-Distribution in a year$quot; was similar to $quot;heavy N-distribution in the spring.$quot; 3. It seems that the productivity of grasses and the rhythm of growth was affected by the seasonal factors rather than these N-distribution factors. 4. It was not recognized that the botanical compositions and the chemical compositions in terms of crude protein and crude fiber was affected by these N-distributions. 5. The N recovery rate was decreased in the second year compared to that in the first year. It seems that in the following early spring the grasses might be able to make good use of the residual N nutrients fertilized in the autumn, due to the small amounts of precipitation in the winter in Korea.