ارزﯾﺎﺑﯽ ﻫﯿﺒﺮﯾﺪ اﻣﯿﺪﺑﺨﺶ آﻓﺘﺎﺑﮕﺮدان در ﻣﺰارع زارﻋﯿﻦ اﺳﺘﺎن ﻓﺎرس

Evaluation of sunflower (Helianthus annuus L.) promising hybrids in farmers field in Fars provenice