بررسی تأثیر کمپوست زبالۀ شهری و باکتری‎های تجزیه‎کنندۀ هیدروکربن‎های نفتی بر جذب عناصر غذایی در نهال سپستان (Cordia myxa L.)در خاک آلوده به نفت خام

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد دانشگاه تهران

2 دانشیار گروه مهندسی علوم خاک دانشگاه تهران

3 استاد گروه مهندسی علوم خاک دانشگاه تهران

4 کارشناس شرکت بهره برداری نفت و گاز مارون

چکیده

استخراج و پالایش سوخت‎های فسیلی، سبب آلودگی منابع خاک و از دسترس خارج‌شدن قسمت عظیمی از اراضی شده است. این تحقیق با هدف بررسی تأثیر سطوح مختلف مادة آلی و باکتری‎های تجزیه‎کنندة هیدروکربن‎ها بر میزان عناصر غذایی نهال سپستان صورت پذیرفت. تیمارها شامل نفت خام (0، 3 و 6 درصد وزنی)، کمپوست زبالة شهری (0، 5 و 10 درصد حجمی) و باکتری (بدون باکتری و دارای باکتری psu141 و psu27ps) بود. نتایج نشان داد که بیشترین غلظت عناصر غذایی نیتروژن در شاخساره، فسفر، پتاسیم، منگنز، آهن و روی در شاخساره و ریشه به ترتیب 69/3، 22/0، 15/0، 82/1، 52/1 درصد و 91/94، 66/123، 15/110، 01/1068، 44/32 و 67/79 میلی‎گرم بر کیلوگرم، در سطح 10 درصد کمپوست و در حضور باکتری بود. بر اساس نتایج این پژوهش، حضور عوامل زیستی سبب افزایش جذب عناصر غذایی و بهبود وضعیت تغذیه‎ای گیاه سپستان در شرایط تنش آلودگی نفتی شد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Effects of Municipal Solid Waste Compost and Petroleum Hydrocarbon Decomposing Bacteria on Nutrient uptake by Cordia myxa L. Seedlings in Soil Contaminated with Crude Oil

نویسندگان [English]

  • Keyvan Valizadeh Rad 1
  • Babak Motesharezadeh 2
  • Hossein Ali Alikhani 3
  • Mahdi Khazaei 4
1 Graduate Student, University of Tehran
2 Assistant Professor, University of Tehran
3 Professor, University of Tehran
4 Exploitation expert, of Maroon Oil and Gas Company
چکیده [English]

Extraction and refinement processes of fossil fuels have led to contamination of soil resources and consequently causing a considerable part of lands get out of profitable reach. This study aimed at an evaluation of the effect of different levels of organic matter and hydrocarbon decomposing bacteria on nutrient uptake of Cordia myxa seedlings. Treatments included crude oil (0, 3 and 6 w/w) municipal solid waste compost (0, 5 and 10% v/v) and bacteria (with bacteria of psu141 and psu27ps vs no bacterial content). The results indicated that the highest nitrogen concentration in shoot, along with phosphorus, potassium, manganese, iron and zinc concentrations in shoot and root were found in samples with compost level of 10%, with the figures of: 3.69%, 0.22%, 0.15%, 1.82%, 1.52% and 94.91, 123.66, 110.15, 1086.01, 32.44, and 79.67 mg/kg, respectively. The concentrations of these elements, in the presence of bacteria, were significantly higher than those in the control. In total, the presence of biological factors caused an increase in the absorption of nutrients and as well the improvement of the nutritional status of the plant when under oil pollution stress conditions.

کلیدواژه‌ها [English]

  • Biological factors
  • growth promoting
  • remediation
  • Soil contamination
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