试验阐明了不同氮、钾施用量对多年生黑麦草草坪色泽、密度、均一性及草屑积累量的影响 ,为草坪的合理营养养护提供了科学的理论依据。研究结果表明 ,氮肥可明显改善草坪色泽、提高草坪质量 ,施氮量从 3～ 12 g/ m2 ,可接受的草坪质量持续时间相应为 13～ 4 8d。多年生黑麦草草屑积累量随施氮量增加而明显增加 ,草屑积累量与施氮量的关系符合方程 :Y=- 0 .4 4 2 6 X2 +16 .392 X+39.92 ,相关系数 R2高达 0 .9996。在供试土壤条件下 ,钾肥对草坪色泽、密度及草坪生长影响不显著 The experiment clarified the effects of different nitrogen and potassium application rates on the color, density, uniformity and the accumulation of cut grass of perennial ryegrass lawn, and provided a scientific theoretical basis for the rational nutrient conservation of lawn. The results showed that nitrogen fertilizer could significantly improve the color of lawn and improve the quality of turf. The nitrogen application rate was from 3 to 12 g / m2 and the acceptable duration of turf quality was from 13 to 48 days. The accumulation of grass ryegrass in perennial ryegrass increased significantly with the increase of nitrogen application rate. The relationship between the amount of grass cuttings and the amount of nitrogen application accorded with the equation: Y = - 0.442 6 X2 +16 .392 X + 39.92, the correlation coefficient R2 Up to 0 .9996. Under the soil conditions tested, potassium had no significant effect on lawn color, density and lawn growth