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بررسی کارایی اپیپلونها و اپیفایتونهای شالیزارهای استان گیلان در آزادسازی پتاسیم از موسکویت وفلوگوپیت | ||
| تحقیقات آب و خاک ایران | ||
| دوره 55، شماره 12، اسفند 1403، صفحه 2499-2520 اصل مقاله (2.05 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ijswr.2024.379770.669761 | ||
| نویسندگان | ||
| مهدیه لیلاسی1؛ حسینعلی علیخانی* 2؛ شایان شریعتی3 | ||
| 1گروه علوم و مهندسی خاک، دانشکدگان کشاورزی و منابع طبیعی، دانشگاه تهران، کرج. ایران | ||
| 2گروه علوم و مهندسی خاک، دانشکدگان کشاورزی و منابع طبیعی دانشگاه تهران، کرج، ایران | ||
| 3گروه مهندسی محیط زیست، دانشکده محیط زیست، دانشگاه تهران، تهران، ایران. | ||
| چکیده | ||
| پریفایتونها در زیستبومهای آبی توان جذب/رهاسازی مقدار زیادی از عناصر غذایی را دارند. در این مطالعه به بررسی تأثیر اپیپلون و اپیفایتون بر تغییرات pH، EC و پتاسیم محلول به صورت دورهای پرداخته شده است. این آزمایش به صورت فاکتوریل در قالب طرح کاملاً تصادفی با سه فاکتور 1- پریفایتون در 22 سطح (9 نمونه اپیپلون، 9 نمونه اپیفایتون، 3 نمونه خاک آیش و شاهد) 2- کانی در دو سطح (موسکویت و فلوگوپیت) 3- زمان در چهار سطح (0، 7، 14 و 21) انجام شد. هر دو نوع پریفایتون مورد آزمایش، توان بالایی در آزادسازی پتاسیم کانیهای سیلیکاته داشتند و در طول آزمایش تمام تیمارها دارای اختلاف آماری معنیدار با شاهد (بدون پریفایتون/خاک و دارای کانی) بودند. در حالت کلی بالاترین میزان انحلال از هر دو کانی مربوط به تیمارهای اپیفایتون بود. انحلال پتاسیم در تمام تیمارها تا روز 7 به صورت افزایشی بوده و سپس در بیشتر تیمارها در روز 14 با کاهش نسبی مواجه شد که مربوط به افزایش زیستتوده در محیط کشت میباشد. بیشترین میزان پتاسیم محلول در روز 21، به میزان 33/14 میلیگرم بر لیتر بود که نسبت به شاهد افزایش 6/3 برابری را نشان داد. کمترین میزان پتاسیم محلول مربوط به تیمارهایی بود که با خاک آیش مایهزنی شده بودند. میزان انحلال فلوگوپیت بیشتر از موسکویت بود اما در بیشتر تیمارها از نظر آماری اختلاف معنیدار نداشتند. نتایج کلی pH و EC به ترتیب روند افزایشی (نشان از افزایش فعالیت فتوسنتزی) و کاهشی (افزایش زیستتوده و جذب بیشتر مواد محلول) را نشان داد. | ||
| کلیدواژه‌ها | ||
| پریفایتون؛ اپیپلون؛ اپیفایتون؛ پتاسیم محلول | ||
| عنوان مقاله [English] | ||
| Valuation of the efficiency of epipelones and epiphytons in the rice paddies of Guilan province in releasing potassium from muscovite and phlogopite | ||
| نویسندگان [English] | ||
| Mahdiyeh Leylasi Marand1؛ Hossein Ali Alikhani2؛ Shayan Shariati3 | ||
| 1Department of soil science engineering, Collage of Agriculture and Natural Resources,, University of Tehran, Karaj, Iran | ||
| 2Department of Soil Science, College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran. | ||
| 3Department of Environmental Engineering, Faculty of Environment, University of Tehran, Tehran, Iran. | ||
| چکیده [English] | ||
| Periphytons in aquatic ecosystems has the ability to absorb/release significant amount of nutrients. This study examines the effect of epipelon and epiphyton on changes in pH, EC and soluble potassium, periodically. This experiment was conducted as a factorial in a completely randomized design with three factors: 1- periphyton at 22 levels (9 samples of epipelon, 9 samples of epiphyton, 3 fallow soil samples and control), 2- mineral at 2 levels (muscovite and phlogopite), 3- sampling time at 4 levels (0, 7, 14 and 21). Both types of periphyton showed high potential in releasing potassium from silicate minerals. Throughout the 21-day experiment, all treatments had significant statistical differences compared to the control (without periphyton/soil but whit minerals). Overall, the highest dissolution rate from both minerals were observed in the epiphyton treatments. Potassium dissolution increased in all treatments until 7th day and then relatively decreased in most treatments by day 14, which was attributed to the increased biomass in medium. The highest soluble potassium on 21th day was 14.33 mg L-1, which showes a 3.6-fold increase compared to the control. The lowest soluble potassium levels were observed in treatments inoculated with fallow soil. Solubilization rate of phlogopite was higher than that of muscovite, but in most treatments, the difference was not statistically significant. Overall, pH and EC results showed increasing (indicating increased photosynthetic activity) and decreasing (indicating increased biomass and higher absorption of soluble materials) trends, respectively. | ||
| کلیدواژه‌ها [English] | ||
| Epipelon, Epiphyton, Periphyton, soluble potassium | ||
| مراجع | ||
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