بررسی شناسایی و معرفی گونه های مختلف مرتعی مقاوم به خشکی و توصیه کشت آنها در مناطق بیابانی به منظور جلوگیری از فرسایش خاک و حفظ پوشش گیاهی بالاخص در بحران خشکسالی

Study of Water use efficiency and dry resistance of ranges plants are the important factors in choosing methods for developing ranges and range management. In this research we studied four native and good taste species including Atriplex leucoclada - Atriplex nummularia - Stipagrostis pennata -Stipagrostis plumosa - Two processed were considered first: choosing the resistant species against dryness and gathering echo logical information about them .for example the height of area that this plant grows climate thpe amount of rainfall and soon. In this process we also gathered seeds of those plants. Secand we used randomized complete blockdesign with four repeatation to determine the resistance paramerters . treatements of dryness were five, ten and twenty days. These parameters were: the amount of perolin , water amount in leaf and root , the weight relation of root to weight stem and root and considering the final aim, we saw that between Atriplex species nummularia is better than the others. In - Stipagrostis species no difference was obsereved . Keywords: Atriplex leucoclada, Atriplex nummulariar.Stipagrostis pennata ,Stipagrostis plumosa, resistant to dry, drought.

Keywords:

مراتع , گیاهان , استیپا گروستیس , مقاومت به خشکی