اثر ترکیب بستر کشت بر ویژگی‌های رویشی نونهال درختچه قره‌داغ (Nitraria schoberi L.) در نهالستان

نوع مقاله: علمی - پژوهشی

نویسندگان

1 استادیار گروه مرتع و آبخیزداری، دانشکده منابع طبیعی و محیط‌زیست، دانشگاه بیرجند، بیرجند، ایران.

2 کارشناسی ارشد مرتعداری، دانشکده منابع طبیعی و محیط‌زیست، دانشگاه بیرجند، بیرجند، ایران.

3 استادیار گروه زراعت و اصلاح نباتات، دانشکده کشاورزی، دانشگاه بیرجند، بیرجند، ایران.

چکیده

امروزه پوشش گیاهی طبیعی در بسیاری از مناطق خشک بنا به علل مختلف، به‌شدت تخریب‌شده است؛ پدیده­ای که این مناطق را به‌سوی بیابانی­شدن سوق می­دهد. یکی از راهکارهای مدیریتی به­منظور جلوگیری از پیشروی بیابان، کشت انواع گیاهان سازگار (مانند درختچه قره­داغ)، از طریق جنگلکاری است و در این راستا کیفیت نهال­های مورد استفاده، نقش مهمی در رسیدن به این هدف دارند. از عوامل مؤثر بر کیفیت نهال­ها، می­توان به خصوصیات فیزیکی و شیمیایی خاک بستر اشاره کرد. این پژوهش با هدف مشخص کردن تأثیر خصوصیات خاک بر رشد و نمو نونهال­های گیاه قره­داغ در نهالستان در قالب طرح کاملاً تصادفی با هفت تیمار و چهار تکرار در بهار سال 1392 در نهالستان اداره منابع طبیعی شهرستان زیرکوه انجام شد. نتایج نشان داد که ترکیب خاک بستر کشت بر روی ویژگی­های رویشی نونهال­های درختچه قره­داغ تأثیر معنی­داری دارد. بر اساس نتایج این پژوهش، بهترین ترکیب خاک برای رشد نونهال­های گیاه قره­داغ عبارت است از: یک قسمت رس، دو قسمت ماسه و یک قسمت کود حیوانی. بنابراین پیشنهاد می­شود در نهالستان­هایی با شرایط مشابه از ترکیب ذکر شده برای تولید نهال­هایی با کیفیت بالاتر استفاده شود.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of soil substrate on vegetative properties of Nitraria schoberi L. seedling in nursery

نویسندگان [English]

  • Mohammad Saghari 1
  • Moslem Saghari 1
  • Faeze Farrokhi 2
  • Hamed Foroghifar 3
1 Assistant Professor, Department of Rangeland and Watershed Management, Faculty of Natural Resources and Environment, University of Birjand, Birjand, I. R. Iran.
2 M.Sc. of Rangeland and Watershed Management, Faculty of Natural Resources and Environment, University of Birjand, Birjand, I. R. Iran.
3 Assistant Professor, Department of Agronomy and Plant Breeding, Faculty of Agriculture, University of Birjand, Birjand, I. R. Iran.
چکیده [English]

Today, natural vegetation is severely damaged in many arid regions due to different causes. This phenomenon leads to desertification in these areas. Afforestation by planting seedlings is one of the approaches to the prevention of desertification by planting suitable plant types (such as Nitraria schoberi L.). One of the effective factors in seedling quality is physical-chemical soil substrate properties. The aim of this research is to investigate the effect of soil substrate on vegetative properties of Nitraria schoberi seedling in nursery based on completely randomized design including seven soil treatments with four replications in Zirkouh nursery in the spring of 2013. The results showed significant effects of different soil treatments on different growth properties of Nitraria schoberi L. seedlings. Based on the results of this study, mixture of clay soil, sand and animal manure (1:2:1) can be suggested as the best soil substrate in order to growth of Nitraria schoberi L. seedlings in the study site and the similar areas. Using this soil composition is recommended for the purpose of production of high quality seedling in nursery, with ecological conditions similar to this research.

کلیدواژه‌ها [English]

  • Afforestation in arid regions
  • Desertification
  • Resistant plants
  • Seedling quality
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