نوع مقاله : مقاله پژوهشی

نویسندگان

1 پژوهشگر فوق دکتری، گروه علوم خاک، دانشکده کشاورزی، دانشگاه فردوسی مشهد

2 عضوهیات علمی

3 دانشگاه فردوسی مشهدو دانشکده کشاورزی، بخش آموزش

4 دانشجوی دکتری شیمی خاک و تغذیه گیاهی، دانشکده کشاورزی، دانشگاه فردوسی مشهد

چکیده

در سال­های اخیرا نانومواد کربنی به دلیل زیست سازگاری، ارزان بودن و همچنین تأثیرات مهمی که بر رشد گیاهان دارند مورد توجه قرار گرفته­اند. در این پژوهش یک کود جدید بر پایه نانو مواد کربنی سنتز و اثرات آن بر رشد و  بهبود غلظت روی در اندام هوایی گیاه گندم رقم سیروان در محیط آبکشت بررسی گردید. برای این منظور، ابتدا این نانومواد کربنی کایرال دوپ شده با یون روی (Zn-NCDs) توسط یک روش هیدروترمال تک مرحله­ای آسان و با استفاده از مواد اولیه اسید سیتریک، اوره و کلرید روی تولید و سپس ویژگی­های آن با روش­های دستگاهی از قبیل FT-IR، CHN، EDS، DLS، PL، UV-Vis، FESEM، TEM، ICP-OES و پتانسیل زتا تعیین شد. همچنین اثرات Zn-NCDs بر رشد و بهبود غلظت روی در گیاه گندم رقم سیروان در محیط آبکشت در قالب طرح کاملا تصادفی با سه تکرار و سه ­­غلظت 2، 4 و 8 ­میلی­گرم بر لیتر در مقایسه با دو کود تجاری ZnSO4 وZn-EDTA با غلظت 2 میلی­گرم بر لیتر ارزیابی گردید. در نهایت، رفتار رهاسازی روی از Zn-NCDs در قالب طرح کاملا تصادفی با آرایش فاکتوریل با سه تکرار در شرایط انکوباسیون بررسی شد. آنالیزهای دستگاهی نشان داد که نانوحامل Zn-NCDs دارای بار سطحی  mV45/20-، پراکندگی یکنواخت، بدون تجمع ظاهری و میانگین اندازه ذرات کمتر از 5 نانومتر است. همچنین، حضور عناصر کربن، نیتروژن، اکسیژن و روی در ساختار Zn-NCDs  تایید گردید. نتایج روش آبکشت نشان داد که Zn-NCDs تاثیر مشابهی با دو کود تجاری ZnSO4 و Zn-EDTA در تامین روی در اندام هوایی گیاه گندم داشته است. همچنین، غلظت نیتروژن و پروتئین را در اندام هوایی نسبت ZnSO4 به طور معنی­داری افزایش داد. نتایج انکوباسیون خاک نشان داد که آزادسازی روی از نانوحامل کربنی NCDs به طور آهسته و به مدت 30 روز تا غلظت­ 35/1 میلی­گرم بر کیلوگرم ادامه داشت.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

The Effect of a New Carbon Nanocarrier as a Slow Release Fertilizer on the Absorption of Zinc in Wheat Plant

نویسندگان [English]

  • Mina Alikhani Moghadam 1
  • Amir Lakzian 2
  • atena mirbolook 3
  • jalal sadeghi 4

1 Postdoctoral researcher, Department of Soil Sciences, Faculty of Agriculture, Ferdowsi University of Mashhad

2 Soil science dept, Ferdowsi university of Mashhad, Mashhad, Iran

3 Faculty of Agriculture, Ferdowsi University of Mashhad

4 PhD in Soil Chemistry and Plant Nutrition, Faculty of Agriculture, Ferdowsi University of Mashhad

چکیده [English]

In recent years, carbon-based nanomaterials have been widely applied in agriculture due to their higher biocompatibility, cheapness, and important effects on the growth and production of plants. In this research work, a new fertilizer based on carbon nanomaterials (Zn-NCDs) was synthesized using citric acid, urea, and zinc chloride as the precursors via a one-pot simple hydrothermal method and characterized by FT-IR, CHN, EDS, DLS, PL, UV-Vis, FESEM, TEM, ICP-OES, and zeta potential. Then, the effects of the Zn-NCDs as a zinc source were evaluated on the growth and the improvement of zinc uptake in the shoot of wheat (Triticum aestivum, Sirvan) under a hydroponic condition using a completely randomized design, with three replications and three concentrations of 2, 4, and 8 mg L-1 compared to ZnSO4, and Zn-EDTA (with a concentration of 2 mg L-1). Instrumental analysis showed that Zn-NCDs nanocarriers have uniform dispersion, no apparent aggregation, and an average particle size of less than 5 nm. Also, the presence of carbon, nitrogen, oxygen, and zinc in the structure of Zn-NCDs was confirmed. The hydroponic culture revealed that Zn-NCDs was as effective as two commercial fertilizers, ZnSO4 and Zn-EDTA, in providing zinc in the shoot of wheat plants. Also, Zn-NCDs significantly increased the percentage of nitrogen and protein in shoot compared to ZnSO4. The results of the soil incubation demonstrated that the zinc release from NCDs nanocarrier continued for 30 days.

کلیدواژه‌ها [English]

  • Carbon nanomaterials
  • Zinc deficiency
  • Hydroponic
  • Slow release fertilizer
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