بررسی سازگاری و عملکرد گونه و پروونانس‌های اکالیپتوس در استان مرکزی (ساوه)

نوع مقاله : علمی- پژوهشی

نویسندگان

1 استادیار پژوهش، بخش تحقیقات منابع طبیعی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان مرکزی، سازمان تحقیقات، آموزش و ترویج کشاورزی، اراک، ایران

2 استادیار پژوهش، مؤسسه تحقیقات جنگلها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران

چکیده

هدف از اجرای این پژوهش، انتخاب گونه سازگار دارای رشد و تولید چوب مناسب، مقاوم به سرما، قابلیت مناسب برای کاشت در فضای سبز شهری و اراضی کم‌بازده ساوه بود. کشت نهال‌های یک‌ساله گونه‌ها و پروونانس‌هایEucalyptus suggrandis ssp. suggrandis، E. microcarpa، E. suggrandis ssp. alipe، E. camaldulensis 41-sh، E. camaldulensis var. camaldulensis، E. rubida 166-sh، E. viminalis 168-sh، E. sargentii و E. camaldulensis 41-ch در اواخر اسفند 1389 در فواصل 3 × 3 متری در قالب طرح آماری بلوک‌های کامل تصادفی در سه تکرار و هر تکرار 25 اصله نهال اجرا شد. نتایج به‌دست آمده نشان داد که بیشترین ارتفاع کل و قطر تاج و بهترین کیفیت درختان متعلق به E. camaldulensis 41-sh بود. آرایه E. viminalis 168-sh از قطر برابر سینه و E. camaldulensis 41-ch از حجم درخت سرپا و میانگین رویش حجمی بیشتر و کیفیت تنه بهتری نسبت به سایر گونه‌ها برخوردار بود. مقاوم‌ترین ‌آرایه‌ها نسبت به سرمازدگی، E. suggrandis ssp. suggrandis، E. camaldulensis 41-sh و E. microcarpa بودند. بیشترین زنده‌مانی به E. sargentii و کمترین آن به E. rubida 166-sh تعلق داشت. مشخصه ارتفاع کل در تبیین واریانس داده‌ها مهم‌ترین عامل شناخته شد. در نهایت، E. camaldulensis برای تولید چوب و E. sargentii برای حفظ خاک و آب در اراضی کم‌بازده ساوه پیشنهاد می‌شود.

کلیدواژه‌ها

عنوان مقاله [English]

Investigation on adaptability and performance of species and provenances of Eucalyptus in Markazi province (Saveh)

نویسندگان [English]

  • Gholam Reza Goodarzi 1
  • Fatemeh Ahmadloo 2
1 Assistant Prof., Research Division of Natural Resources, Markazi Agricultural and Natural Resources Research and Education Center (AREEO), Arak, Iran
2 Assistant Prof., Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
چکیده [English]

The aim of the present study was selection of adaptable species with proper growth and wood production and resistant to cold with the aim of wood production and cultivation in the urban green space and infertile lands of Saveh. Seedlings of Eucalyptus suggrandis ssp. Suggrandis, E. microcarpa, E. suggrandis ssp. Alipe, E. camaldulensis 41-sh, E. camaldulensis var. camaldulensis, E. rubida 166-sh, E. viminalis 168-sh, E. sargentii and E. camaldulensis 41-ch were planted in 3×3m spacing on late March 2010 in three replications with 25 seedlings based on Randomized Complete Block design (RCB). Also, some physic-chemical properties of soilwere examined. Results of the data analysis showed that the maximum total height, crown diameter and trees quality were observed in E. camaldulensis 41-sh. While E. viminalis 168-sh showed maximum diameter at breast height and E. camaldulensis 41-ch the heigheststanding stock volume, volume increment and quality in compare to other species. Eucalyptus suggrandis ssp. Suggrandis, E. camaldulensis 41-sh and E. microcarpa were most resistant to cold. The maximum rate of survival was measured in E. sargentii and the lowest in E. rubida 166-sh. Total height was found to be the most important factor in extraction data variance. E. camaldulensis is recommended for wood production and E. sargentii is suggested for soil and water conservation in infertile lands of Saveh.

کلیدواژه‌ها [English]

  • DIAMETER
  • height
  • quality
  • resistance to cold
  • soil
  • survival

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