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مقایسه تنوع ساختمانی انواع اسید هیومیک استخراج شده از منابع آلی متعارف در بخش کشاورزی | ||
| تحقیقات آب و خاک ایران | ||
| دوره 54، شماره 1، فروردین 1402، صفحه 123-134 اصل مقاله (1.56 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ijswr.2023.347116.669340 | ||
| نویسندگان | ||
| سیمین خسروی1؛ ساره نظامی* 2؛ اکرم فاطمی1 | ||
| 1گروه علوم و مهندسی خاک، دانشکده کشاورزی، دانشگاه رازی، کرمانشاه، ایران | ||
| 2گروه علوم و مهندسی خاک، دانشکده کشاورزی،دانشگا رازی، کرمانشاه، ایران | ||
| چکیده | ||
| اسید هیومیک یک ترکیبات آلی است که می‌تواند خصوصیات فیزیکی، شیمیایی و بیولوژیکی خاک را بهبود بخشد. علاوه بر آن نقش مهمی در افزایش رشد و عملکرد گیاه دارد. این ترکیب از منابع مختلفی که غنی از مواد آلی است نظیر کمپوست‌ها، زغال سنگ، مواد هوموسی شده و خاک می‌تواند استخراج شود. به منظور اطلاع از خصوصیات طیفی و ساختاری این ترکیبات، مطالعه‌ای در سال 1400 روی اسید هیومیک استخراج شده از منابع مختلف آلی (کمپوست کود گاوی، ورمی‌کمپوست، کمپوست زباله شهری، کود گوسفندی و کود مرغی) انجام شد. مقادیر عناصر کربن، اکسیژن، هیدروژن و نیتروژن در اسید هیومیک‌های استخراج شده با دستگاه آنالیز عناصر، گروه‌های عاملی با دستگاه FTIR و نسبت‌های جذب اسپکتروفتومتری E3/E5 و E4/E6 در آنها با دستگاه اسپکتروفتومتر در آزمایشگاه گروه علوم و مهندسی خاک پردیس کشاورزی و منابع طبیعی دانشگاه رازی کرمانشاه تعیین شدند. کمترین نسبت H/C در اسید هیومیک استخراج شده از کمپوست زباله شهری (05/1) و ورمی کمپوست (09/1)، بیشترین نسبت O/C در اسید هیومیک کمپوست زباله شهری (70/0) و ورمی کمپوست (59/0) و کمترین نسبت C/N در اسید هیومیک کود مرغی (84/11) مشاهده شد. با توجه به نتایج آنالیز FTIR قوی‌ترین باند‌های جذب در 3400 cm-1، 3000-2900 cm-1، 1700-1600 cm-1 و 1100-1000 cm-1 مشاهده شدند. بیشترین نسبت E3/E5 در اسید هیومیک استخراج شده از کود مرغی (81/12) و کود گوسفندی (61/10) و کمترین مقدار در کمپوست زباله شهری (00/2) دیده شد. بیشترین نسبت E4/E6 نیز در اسید هیومیک استخراج شده از کود مرغی (31/7) بدست آمد و کمترین مقدار E4/E6 در اسید هیومیک حاصل از کمپوست زباله شهری (70/4) مشاهده شد. | ||
| کلیدواژه‌ها | ||
| اسید هیومیک؛ آنالیز عناصر؛ FTIR؛ E3/E5؛ E4/E6 | ||
| عنوان مقاله [English] | ||
| Comparison of structural diversity of humic acid types extracted from conventional organic sources in agriculture | ||
| نویسندگان [English] | ||
| Simin Khosravi1؛ Sareh Nezami2؛ Akram Fatemi1 | ||
| 1Soil Science and Engineering department, College of Agriculture, Razi university, Kermanshah, Iran | ||
| 2Soil Science and Engineering department, College of Agriculture, Razi University, Kermanshah, Iran | ||
| چکیده [English] | ||
| Humic acid is an organic compound that can improve the physical, chemical and biological properties of soil. In addition, it plays an important role in increasing plant growth and yield. This composition can be extracted from various sources that are rich in organic materials such as composts, coal, humus materials and soil. In order to know the spectral and structural characteristics of this compound, humic acid was extracted from different organic sources in 2021. The amounts of carbon, oxygen, hydrogen and nitrogen elements in the extracted humic acids were determined by elemental analyzer, functional groups by FTIR and the spectrophotometric absorption ratios of E3/E5 and E4/E6 were determined by spectrophotometer in Department of Soil Science and Engineering laboratory, Razi University, Kermanshah. The lowest H/C ratio in the extracted humic acids was observed from municipal waste compost (1.05) and vermicompost (1.09), the highest O/C ratio was in humic acid extracted from municipal waste compost (0.70) and vermicompost (0.59), and the lowest C/N ratio was in humic acid of chicken manure (11.84). According to the results of FTIR analysis, the strongest absorption bands were observed at 3400 cm-1, 2900-3000 cm-1, 1600- 1700 cm-1 and 1000-1100 cm-1. The highest ratio of E3/E5 was found in humic acid extracted from chicken manure (12.81) and sheep manure (10.61) and the lowest amount was observed in municipal waste compost (2.00). The highest ratio of E4/E6 was obtained in humic acid extracted from chicken manure (7.31) and the lowest amount of E4/E6 was observed in humic acid obtained from municipal waste compost (4.70). | ||
| کلیدواژه‌ها [English] | ||
| Humic acid, Element analysis, FTIR, E3/E5, E4/E6 | ||
| مراجع | ||
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