بررسی امکان استقرار و مقایسه دو گونه از جنس آتریپلکس (Atriplex canescens و Atriplex verrocifera) برای تولید علوفه در اراضی شور و کم‌بازده

نوع مقاله: مقاله پژوهشی

نویسندگان

1 مربی پژوهشی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان سمنان، سازمان تحقیقات، آموزش و ترویج کشاورزی، سمنان، ایران،

2 مربی پژوهشی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان سمنان، سازمان تحقیقات، آموزش و ترویج کشاورزی، سمنان، ایران

3 کارشناس پژوهشی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان سمنان، سازمان تحقیقات، آموزش و ترویج کشاورزی، سمنان، ایران

چکیده

 
استفاده از اراضی شور و کم‌بازده برای تولید علوفه گام مهمی در راستای بهره‌وری بهینه از منابع آب و خاک با کیفیت پایین از دیدگاه کشاورزی به حساب می‌آید. گونه‌های  Atriplex canescensو Atriplex verrocifera به‌عنوان گونه‌های مقاوم به خشکی و شوری، قادر به تولید علوفه از اراضی شور و کم‌بازده هستند. برای بررسی امکان استقرار و سنجش میزان تولید علوفه در اراضی شور و کم‌بازده و تعیین شیوه مناسب کاشت، ابتدا دو منطقه با شوری متفاوت (شوری تا 20ds/m و شوری تا 40 ds/m) از طریق آزمایش خاک انتخاب شد. سپس در هر منطقه، از هر یک از گونه‌های مذکور به تعداد 45 اصله نهال در سه تکرار کاشته شد. نتایج این تحقیق نشان داد در مناطق با شوری زیاد (تا40 ds/m) استفاده از گونه‌هایAtriplex canescens  و Atriplex verrocifera برای استقرار و تولید علوفه امکان‌پذیر است. تحلیل نتایج حاصل از تجزیه واریانس رشد تاج‌پوشش و تولید سالانه گونه‌های مذکور نشان داد که در اراضی شور با حداکثر 40 ds/m رشد سال اول At.verrosifera بیشتر از  At.canescensاست، اما در منطقه با شوری کم رشد At.canescens بیشتر است. میزان تولید گونه‌های مستقر شده نشان می‌دهد که تولید گونه At.canescens بیشتر از گونه  At. verrusiferaاست. اما این اختلاف در منطقه شور به حداقل می‌رسد. بنابراین اثر شوری بر تولید  At.canescensمحسوس و مؤثر بوده اما میزان تولید  At. verrusiferaنسبت به منطقه با شوری کم بیشتر شده، ازاین‌رو این گونه از مقاومت و تحمل بیشتری برخوردار است.

کلیدواژه‌ها


عنوان مقاله [English]

Exploring the possibility of the establishment and comparing two species of the genus Atriplex (Atriplex canescens and Atriplex verrocifera( of forage production in saline soils and low yields

نویسندگان [English]

  • Daryoush Ghorbanian 1
  • Heydar Sharifeh 2
  • Mohammad Amirjan 3
  • Rasoul Mirakhorli 3
1 Research Instructor, Forests and Rangelands Research Department, Semnan Agricultural and Natural Resources Research and Education Centert AREEO, Semnan, Iran
2 Research Instructor, Forests and Rangelands Research Department, Semnan Agricultural and Natural Resources Research and Education Centert AREEO, Semnan, Iran
3 Senior Research, Forests and Rangelands Research Department, Semnan Agricultural and Natural Resources Research and Education Centert AREEO, Semnan, Iran
چکیده [English]

     Use of saline and low yield soils for forage production is an important step towards optimal efficacy of low-quality water and soil resources from agricultural point of view. Atriplexcanescens and Atriplexverrocifera as drought and salinity tolerent species, are able to produce forage in saline and low yield soils. To investigate the possibility of establishing and measuring the amount of forage production in saline and low yield soils, and determining the appropriate planting method, two salinity areas (salinity up to 20 ds / m and salinity up to 40 ds/m) were first selected through soil testing. Then in each region, 45 seedlings of each mentioned species were planted in three replications. The results of the present study showed that the use of Atriplex canescens and Atriplex verrocifera for establishment and forage production is possible in in areas with high salinity (up to 40 ds/m). Analysis of variance of canopy growth and annual production of the mentioned species showed that in saline lands with a maximum of 40 ds/m, the growth rate of the first year of At. verrosifera was more than At. canescens. But in the region with low salinity, At. canescens growth was more than the other species. The production amount of established species shows that the production of At. canescens is more than At.verrusifera. But this difference in salt area is minimized. Therefore, the effect of salinity on the production of At. canescens is tangible and effective. But the production rate of At. verrucifera is more in areas with low salinity. So, this species has more resistance and tolerance.

کلیدواژه‌ها [English]

  • Atriplex
  • forage production
  • drylands
  • saline soils
  • Semnan province
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