[Objective]The research aimed to study the nitrogen nutrition characteristics in eucalyptus seedlings and provide theoretical basis for eucalyptus seedlings cultivation management.[Methods]The effect of nitrogen forms on the growth and physiological characteristics of eucalyptus seedlings were studied with the method of water culture.[Results]In the same concentration of nitrogen treatment,the amount of nitrate nitrogen absorbed by eucalyptus seedlings was much higher than ammonium nitrogen.In the ammonium ...