ﺗﺎﺛﯿﺮ ﻧﯿﺘﺮوژن ﺑﺮ رواﺑﻂ آﺑﯽ و ﮐﺎرآﯾﯽ ﻣﺼﺮف ﻧﯿﺘﺮوژن در ﯾﻮﻧﺠﻪ در ﺷﺮاﯾﻂ ﮐﻢآﺑﯽ

Effect of nitrogen on water relations and nitrogen use efficiency of alfalfa under water deficit condition