کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8894001 | 1629392 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of biogas slurry application rate on colloidal phosphorus leaching in paddy soil: A column study
ترجمه فارسی عنوان
اثر میزان کاربرد دوغاب زیست گازی بر میزان فشرده سازی کلوئیدهای فسفر در خاک های آسیا: مطالعه ی
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کلمات کلیدی
دوغاب گازوئیل، فسفر کلوئیدی، شستن خاک بذر، مطالعه ستون،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
چکیده انگلیسی
Colloidal phosphorus (Pcoll) in soil solutions and subsurface drainage has attracted increasing attention as an additional mobile form of P. A column study was conducted to investigate the effect of biogas slurry (BS) on Pcoll leaching in paddy topsoil (0-20â¯cm) at rate of 0; 225â¯m3â¯haâ1 (55â¯kgâ¯Nâ¯haâ1, 17â¯kgâ¯Pâ¯haâ1); 673â¯m3â¯haâ1 (165â¯kgâ¯Nâ¯haâ1, 52â¯kgâ¯Pâ¯haâ1); 1350â¯m3â¯haâ1 (330â¯kgâ¯Nâ¯haâ1, 104â¯kgâ¯Pâ¯haâ1) of BS. The colloids particles were separated by microfiltration and ultra-centrifugation processes. Dissolved phosphorus (DP) in leachate ranged from 0.04 to 0.09â¯mgâ¯Pâ¯Lâ1 and contributed between 56 and 76% to the total P leaching. Pcoll in leachate ranged from 0.002 to 0.03â¯mgâ¯Pâ¯Lâ1 in leachate and contributed between 3 and 26% to TP leaching. Results clearly showed that BS increased Pcoll leaching at medium (673â¯m3â¯haâ1: 165â¯kgâ¯Nâ¯haâ1, 52â¯kgâ¯Pâ¯haâ1) and high application rate of BS (1350â¯m3â¯haâ1: 330â¯kgâ¯Nâ¯haâ1, 104â¯kgâ¯Pâ¯haâ1). In contrast, the smallest tested BS application of 225â¯m3â¯haâ1 (55â¯kgâ¯Nâ¯haâ1, 17â¯kgâ¯Pâ¯haâ1) did not affect Pcoll concentrations in leachates. Significant positive correlations was found between Pcoll and colloidal aluminum (Alcoll), colloidal calcium (Cacoll), total organic carbon (TOCcoll), and with pH, indicating that Al/Ca minerals - organic matter may play a major role as carriers for Pcoll leaching and these processes were pH-dependent. This study confirms that high level of BS application could result in the mobilization of Pcoll from paddy topsoil by leaching.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Geoderma - Volume 325, 1 September 2018, Pages 117-124
Journal: Geoderma - Volume 325, 1 September 2018, Pages 117-124
نویسندگان
Christophe Niyungeko, Xinqiang Liang, Chunlong Liu, Zi-wen Liu, Mohamed Sheteiwy, Huifang Zhang, Junjie Zhou, Guangming Tian,