تاثیر زﻣﺎن ﺑﺮداﺷﺖ ﻗﺼﯿﻞ و ﮐﻮد ﻧﯿﺘﺮوژﻧﻪ سرکبر عملکرد داﻧﻪ ﮔﻨﺪم، ﭼﺎودار و ﺗﺮﯾﺘﯿﮑﺎﻟﻪ

Effect of forage cutting time and top-dress of nitrogen fertilizer on yield and yield components of wheat, rye and triticale