نشریه علمی - پژوهشی مرتع و آبخیزداری

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار دانشکدۀ محیط زیست و منابع طبیعی، دانشگاه صنعتی خاتم الانبیاء (ص) بهبهان، ایران.

2 استادیار دانشکدۀ محیط زیست و منابع طبیعی، دانشگاه صنعتی خاتم الانبیاء(ص) بهبهان، ایران.

3 دانشجوی کارشناسی ارشد مرتعداری، دانشگاه صنعتی خاتم الانبیاء(ص) بهبهان، ایران.

چکیده

به منظور ارزیابی تأثیر زئولیت در رشد گیاهان در شرایط کم آبی، در این تحقیق پس از آماده سازی خاک گونه­های
Cymbopogon olivieri ،Medicago sativa، Medicago scutellata در سه سطح زئولیت (2 گرم و 4 گرم و صفر در کیلوگرم خاک گلدان) با 15 تکرار در نظر گرفته شد. پس از اطمینان از جوانه­زنی بذرها، تنش 7 روزۀ آبیاری بر روی آن­ها اعمال گردید. نتایج نشان داد که با اعمال تنش اول تأثیر کاربرد زئولیت در بهبود زنده­مانی و تعدیل تنش خشکی نمایان می­شود و ملاحظه می­شود که در تیمارهای 2 گرم و 4 گرم زئولیت درصد زنده­مانی و سبز شدن نهال­ها نسبت به شاهد بیشتر است. به تدریج با اعمال تنش­ها میانگین تعداد نهال­های باقیمانده در تیمارهای شاهد پایین آمد. بیشترین درصد تعداد پایۀ باقیمانده (زنده مانی جوانه­ها)، طول کل گیاه، وزن تر ساقه و وزن خشک ساقه در گونۀ  Cymbopogon olivieri و در سطح 4 گرم زئولیت می­باشد. عملکرد صفاتی چون طول ساقۀ تر، وزن تر گیاه، وزن خشک گیاه و وزن تر ریشه نیز در تیمار 4 گرم زئولیت و در گونۀ Medicago scutellata  افزایش داشته است. بیشترین وزن خشک ریشه در گونۀ Medicago sativa با کاربرد 4 گرم زئولیت می­باشد. طول ریشۀ تر در هر سه گونۀ گیاهی مورد نظر در هیچ یک از تیمارها تفاوت معنی­داری نداشت.

کلیدواژه‌ها

عنوان مقاله [English]

Study the effects of using zeolite on the prototypical stages of growth in pasture species: Cymbopogon Olivieri ,Medicago sativa and Medicago scutellata

نویسندگان [English]

  • somaie dehdary 1
  • zohreh kuhansani 2
  • fatemeh shojaee 3
  • ruhangiz kazemi 3

1

2

3

چکیده [English]

To evaluate the effect of zeolite on the growth of plants in drought conditions. Cymbopogonolivieri, Medicago sativa, Medicagoscutellata in three zeolite levels (2 g, 4 g and zero in a kilogram potting soil) with 15 repetitions was considered. After ensuring the germination of plants, 7-day irrigation tension was applied to them. It was found out that following the first tension, the effect of zeolite in improving viability and mitigation of drought tension will appear and it is observed that in 20% and 40% Zeolite treatments, the percentage of viability and germination of plants is much more in comparison with control group. Gradually, following applying tensions, the average number of remaining saplings decreased in control treatments. The highest percentage of residual base, the whole plant length, stem fresh weight, and dry weight of zeolite was observed in Cymbopogonolivieri in the treatment of 40%. More traits such as stem length, fresh weight, dry weight and fresh weight roots in the treatment of 40% zeolite in Medicagoscutellata species improved. The highest root weight was observed in Medicago sativa using 40% zeolite. No significant difference was detected in terms of wet root length in three plant species.

کلیدواژه‌ها [English]

  • super absorbents
  • Zeolite
  • drought tension
  • viability
  • Cymbopogonolivieri
  • Medicago sativa
  • Medicagoscutellata
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