تأثیر دوره‌های مختلف کاربرد لجن فاضلاب و کمپوست زباله شهری بر میزان کادمیم و نیکل خاک و گیاه گاوزبان

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد علوم خاک، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری

2 دانشیار گروه علوم خاک، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری

چکیده

به‌منظور بررسی کادمیم و نیکل در اندامهای مختلف گیاه گاوزبان کاشته شده در خاک همراه با کاربرد کودهای آلی لجن فاضلاب و کمپوست زباله شهری، آزمایشی به‌صورت اسپلیت پلات در قالب طرح بلوک کامل تصادفی در سال 1388 در شرایط مزرعه اجرا شد. فاکتور اصلی در پنج سطح شاهد، 20 و 40 تن لجن فاضلاب و کمپوست زباله شهری در هکتار و فاکتور فرعی، تیمار سال در شش سطح (مصرف در سال 85 ، سالهای 85 و 86 ، سالهای 85 و 88 ، سالهای 85 الی 87 ، سالهای 85 ، 86 ، 88 و سالهای 85 الی 88) در نظر گرفته شد. نتایج نشان داد که مصرف 40 تن لجن فاضلاب و کمپوست زباله شهری در هکتار سبب افزایش کادمیم و نیکل قابل جذب خاک به‌ترتیب حدود 2 و 5/2 برابر و مقدار کادمیم و نیکل در ریشه گیاه به میزان 5 و 5/2 برابر نسبت به شاهد می‌گردد. بالاترین میزان کادمیم در برگ و گل گاوزبان در تیمار 40 تن لجن فاضلاب در هکتار مشاهده شد. ضمناً سطوح 40 تن لجن فاضلاب و کمپوست زباله شهری در هکتار نیز بیشترین تجمع نیکل را به‌ترتیب در برگ و گل گاوزبان موجب شدند. به‌علاوه بیشترین میزان انتقال کادمیم در تیمار 40 تن لجن فاضلاب در هکتار به قسمت گل در مورد نیکل نیز در همین تیمار کودی به قسمت برگ گاوزبان بوده است.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of Different Periods of Application of Sewage Sludge and Municipal Solid Wastes Compost on the Amount of Cadmium and Nickel Content of Soil and Borage (Borago officinadis)

نویسندگان [English]

  • Afsaneh Ghademian Sorboni 1
  • Mohammadali Bahmanyar 2
  • Mahdi GHajar Sepanlo 2
چکیده [English]

In order to study, the amount of cadmium and nickel in different plant organs of borage planted in calcareous, following the application of sewage sludge and municipal solid wastes compost, an experiment was conducted in split-plot design based on complete randomized block design in 2009. The main plot was sewage sludge and municipal solid wastes compost at five levels (control, 20, and 40 ton/ha) and the sub plot was years in six treatments (2006, 2006 and 2007, 2006 and 2008, 2006-2008, 2006 and 2007 and 2009, and 2006-2009). The amount of available Cd and Ni in soil and Cd and Ni accumulated in the roots, leaves and flower of Borage were compared with the control. Results indicated that the application of 40 ton/ha sewage sludge and municipal solid wastes compost increased the available Cd and Ni in soil (about 2 and 2.5 times, respectively) and the amount of Cd and Ni in the roots of Borage by 5 and 2.5 times compared to control. The maximum amount of Cd in leaves and flowers of borage was observed in the 40 ton/ha sewage sludge treatment. Furthermore, the treatment of 40 ton/ha sewage sludge and municipal solid wastes compost produced the most amount of Ni in leaves and flowers of Borage, respectively. Meanwhile, the maximum amount of Cd translocated to the shoots was observed in the flower in the 40 ton/ha sewage sludge and Ni in the same organic fertilizer treatments to leaves of borage.

کلیدواژه‌ها [English]

  • sewage sludge
  • Municipal Solid Wastes Compost
  • Cadmium
  • nickel
  • Borage
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