As a dorminant factor, nitrogen fertilizer has comprehensive effects on appearence quality, root system, resistance and reproductivity of the turf.

• 氮肥在草坪的生长发育过程中起着主导作用，是影响草坪的地上部表观质量、地下部根系发育、草坪的抗逆性及种子生产能力等方面的重要因素。