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اثر سطوح مختلف پلیآکریلیک و هیومیک اسید بر پایداری خاکدانه‌ها و رطوبت ظرفیت مزرعه‌ای خاک‌های شور و سدیمی | ||
| تحقیقات آب و خاک ایران | ||
| دوره 52، شماره 1، فروردین 1400، صفحه 15-24 اصل مقاله (814.86 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ijswr.2020.286599.668281 | ||
| نویسندگان | ||
| زهرا ناجی1؛ محمد بابااکبری* 2؛ علیرضا واعظی3؛ شروین احمدی4 | ||
| 1دانشجوی کارشناسی ارشد گروه علوم و مهندسی خاک، دانشکده کشاورزی، دانشگاه زنجان، زنجان، ایران | ||
| 2هیات علمی دانشگاه زنجان | ||
| 3عضو هیات علمی گروه مهندسی علوم خاک دانشگاه زنجان، | ||
| 4هیئت علمی پژوهشگاه پلیمر و پتروشیمی ایران - گروه پلاستیک | ||
| چکیده | ||
| خاک‌های شور و سدیمی ساختمان ضعیفی دارند. ویژگی‌های شیمیایی و فیزیکی این خاک‌ها با استفاده از اصلاحکنندههای مختلف قابل اصلاح است. با مصرف اصلاحکنندههای آلی پایداری خاکدانه‌ها، ظرفیت نگهداری آب خاک و درصد رطوبت قابل‌استفاده برای گیاه افزایش می‌یابد. برای کاهش مصرف آب در کشاورزی و بهبود ساختمان خاک در خاک‌های متاثر از نمک استفاده از پلیمرهای محلول در آب و کودهای حاوی اسید هیومیک مناسب است. هدف از این پژوهش بررسی تاثیر پلیآکریلیک اسید و هیومیک اسید بر پایداری خاکدانه‌ها و رطوبت ظرفیت مزرعه‌ای در خاک‌های شور و سدیمی بود. این پژوهش با استفاده از چهار سطح شوری 10، 20، 30 و 40 دسی زیمنس بر متر و کاربرد دو نوع اصلاح‌کننده (هیومیک اسید و پلیاکریلیک اسید) در چهار سطح (صفر، 2/0، 4/0و 8/0 درصد وزنی) به‌صورت فاکتوریل در قالب طرح کاملاً تصادفی با سه تکرار در شرایط گلخانه‌ای اجرا شد. نتایج نشان داد که بیشترین مقادیر پایداری خاکدانه‌ها در شوری 10 دسی زیمنس بر متر و در سطح 8/0 درصد پلیآکریلیک و هیومیک اسید و به ترتیب 13/3 و 51/1 میلی‌متر بود. بیشترین مقدار رطوبت ظرفیت مزرعه در سطح شوری 40 دسی‌زیمنس بر متر و مقدار 8/0 درصد پلیآکریلیک و هیومیک اسید بهترتیب 65/26 و 65/25 درصد اندازه‌گیری شد. | ||
| کلیدواژه‌ها | ||
| " آبشویی""پلیآکریلیک اسید"؛ "پایداری خاکدانه‌ها"؛ "رطوبت ظرفیت مزرعه"؛ "شوری" | ||
| عنوان مقاله [English] | ||
| The Effect of Different Levels of Polyacrylic and Humic Acid on Aggregates Stability and Soil Moisture Content of Saline and Sodic Soils | ||
| نویسندگان [English] | ||
| zahra naji1؛ mohammad babaakbari2؛ Alireza Vaezi3؛ Shervin Ahmadi4 | ||
| 1M.Sc. Student, Department of Soil Science, College of Agriculture, University of Zanjan, , Zanjan Iran | ||
| 2zanjan Unevercity | ||
| 3Associate Professor, Department of Soil Science, University of Zanjan, Iran. | ||
| 4Department of Plastic, Iran Polymer and Petrochemical Institute, Tehran, Iran | ||
| چکیده [English] | ||
| Saline and sodic soils have a poor structure. The chemical and physical properties of these soils can be modified using various modifiers. Consumption of organic modifiers increases aggregate stability, soil water holding capacity and percentage of usable moisture for the plant. The use of water-soluble polymers and fertilizers containing humic acid is suitable for reducing water use in agriculture and improving soil structure in salt-affected soils. The purpose of this study was to investigate the effect of polyacrylic and humic acid on aggregate stability and field capacity in saline and sodic soils. This study was conducted using four salinity levels of 10, 20, 30 and 40 dSm-1 and application of two modifiers (humic acid and polyacrylic acid) at 4 levels (0, 0.2, 0.4 and 0.8% by weight) in factorial arrangement with completely randomized design with three replications in greenhouse conditions. The results showed that the highest values of aggregates stability were at the salinity level of 10 dSm-1 and the level of 0.8% polyacrylic acid (3.13 mm) and humic acid (1.51 mm), respectively. The highest moisture content of the field capacity was measured at the salinity level of 40 dSm-1 and at the level of 0.8% polyacrylic acid (26.65%) and humic acid (25.65%), respectively. | ||
| کلیدواژه‌ها [English] | ||
| "Aggregates structure", "Field capacity moisture", "Leaching" "Polyacrylic acid", "Salinity" | ||
| مراجع | ||
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