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تأثیر بیوچارهای کاه برنج و خرده چوب نراد بر ویژگیهای شیمیایی خاک شور- سدیمی با بافت لوم رسی | ||
| دانش آب و خاک | ||
| مقاله 5، دوره 27، شماره 4، زمستان 1396، صفحه 49-61 اصل مقاله (1258 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| نویسندگان | ||
| مائده پریچهر* 1؛ فردین صادق زاده2؛ محمد علی بهمنیار3؛ مهدی قاجار سپانلو4 | ||
| 1دانشجوی کارشناسی ارشد شیمی و حاصلخیزی خاک، دانشگاه علوم کشاورزی و منابع طبیعی ساری | ||
| 2استادیار گروه علوم خاک، دانشگاه علوم کشاورزی و منابع طبیعی ساری | ||
| 3استاد گروه علوم خاک، دانشگاه علوم کشاورزی و منابع طبیعی ساری | ||
| 4دانشیار گروه علوم خاک، دانشگاه علوم کشاورزی و منابع طبیعی ساری | ||
| چکیده | ||
| باتوجه به ناکافی بودن زمینهای مناسب کشاورزی در جهان و قابل توجه بودن وسعت اراضی شور- سدیمی، اصلاح این خاکها حائز اهمیت میباشد. بررسیها نشان میدهد که کاربرد بایوچار در خاک، منجر به بهبود کیفیت خاک، افزایش بازده محصول و کاهش تنشهای مربوط به شوری میشود. در این پژوهش تأثیر افزودن بیوچارهای مختلف بر برخی ویژگیهای شیمیایی، از جمله غلظت کاتیونها و آنیونهای محلول خاک شور- سدیمی با بافت لوم رسی تهیه شده از منطقه کرفون واقع در استان مازندران، مورد بررسی قرار گرفت. بیوچارهای مختلف از بقایای کشاورزی (کاه برنج) و ضایعات کارخانه چوب (چوب نراد) در دمای300 درجه سلیسیوس بهصورت ساده و اسیدی تهیه شدند و در سه سطح (0، 5/2 و 5 درصد) به یک خاک شور- سدیمی افزوده شدند. نتایج نشان داد که کاربرد بیوچار کاه برنج موجب کاهش بیشتر pH خاک نسبت به بیوچار حاصل از نراد گردید. همچنین کاربرد بیوچار نراد در خاک موجب کاهش هدایت الکتریکی، نسبت جذب سدیم و میزان سدیم، پتاسیم، کلسیم و کلرید در محلول خاک شد؛ در حالیکه بیوچار کاه برنج، بیوچار کاه برنج اسیدی و بیوچار نراد اسیدی باعث افزایش شاخصها و عناصر مذکور شدند. نتایج نشان داد در صورتیکه آبشوئی املاح و زهکشی صورت نپذیرد، فقط میتوان بیوچار ضایعات چوب نراد را به خاک شور- سدیمی اضافه نمود. | ||
| کلیدواژه‌ها | ||
| بیوچار؛ خاک شور- سدیمی؛ ویژگیهای شیمیایی؛ کاه برنج؛ نراد | ||
| عنوان مقاله [English] | ||
| Effects of Rice Straw and Dicer Biochars on Chemical Characteristics of Clay-Loam, Saline-Sodic Soil | ||
| نویسندگان [English] | ||
| M parichehre1؛ F SadeghZadeh2؛ M A Behmanyar3؛ M Ghajar Sepanlu4 | ||
| 1M.Sc. Student of Chemical Engineering and Soil Fertility, Sari Univ. of Agri. Sci. and Natural Resources, Iran | ||
| 2Assist. Prof, of Soil Science Dept. Sari Univ. of Agri. Sci. and Natural Resources, Iran | ||
| 3Prof. of Soil Science Dept. Sari Univ. of Agri. Sci. and Natural Resources, Iran | ||
| 4Assoc. Prof, of Soil Science Dept. Sari Univ. of Agri. Sci. and Natural Resources, Iran | ||
| چکیده [English] | ||
| Due to the insufficient suitable agricultural land and the large extent of saline-sodic soil across the world, the reclamation of the salt affected soils is necessary. Studies indicate that the addition of biochars to the soils improves their qualities, increases crop yield, and reduces salinity stresses. In the present study, the effects of adding various biochars on some chemical characteristics, including the concentration of soluble cations and anions of saline-sodic soil with clay-loam texture, which was taken from the Kafoun region in Mazandaran province, were investigated. Several kinds of simple and acidic biochars were produced from agricultural residues (rice straw) and wood factory waste (dicer) at 300 ° C and added to saline-sodic soil in three levels 0, (2.5, and 5%). The results showed that the rice straw biochar reduced the soil pH more than the biochar obtained from dicer. It was also understood that dicer biochar reduced the amount of soil EC, SAR, soluble sodium, potassium, calcium, and chloride. However, the rice straw biochar, acidic rice straw biochar, and acidic dicer biochar increased the amounts of those criteria and elements. Ultimately, it can be concluded that only the dicer biochar should be added to saline- sodic soil, in the absence of leaching and drainage. | ||
| کلیدواژه‌ها [English] | ||
| Biochar, Chemical Characteristics, Dicer, Rice straw, Saline-sodic soil | ||
| مراجع | ||
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