اثر مصرف خاکی آهن و روی برعملکرد و اﺟﺰای ﻋﻤﻠﮑﺮد داﻧﻪ ی ﮔﻨﺪم در ﺗﺎرﯾﺦ ﮐﺎﺷﺖ ﻫﺎی ﻣﺨﺘﻠﻒ

Effect of soil application of iron and zinc on yield and yield components of wheat at different planting dates