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تأثیر پلیمر سوپر جاذب بلور آب A، پرلیت و زئولیت بر ویژگیهای فیزیکی خاک لوم شنی | ||
تحقیقات آب و خاک ایران | ||
مقاله 15، دوره 50، شماره 5، مهر 1398، صفحه 1219-1230 اصل مقاله (957.87 K) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22059/ijswr.2018.263434.667987 | ||
نویسندگان | ||
مرضیه مرادیان1؛ عباس ملکی* 2؛ افسانه عالی نژادیان بیدآبادی3 | ||
1گروه آب، دانشکده کشاورزی دانشگاه لرستان | ||
2گروه آب، دانشکده کشاورزی، دانشگاه لرستان | ||
3گروه علوم و مهندسی خاک، دانشکده کشاورزی و منابع طبیعی دانشگاه لرستان، خرم آباد، ایران | ||
چکیده | ||
یکی از راهکارهای افزایش بازده آبیاری در مناطق خشک و نیمهخشک استفاده از اصلاحکنندههای خاک است. تحقیق حاضر با هدف تأثیر سطوح مختلف پلیمر سوپر جاذب بلور آب A، پرلیت و زئولیت بر ویژگیهای فیزیکی خاک لوم-شنی، در قالب آزمایش فاکتوریل با طرح بلوکهای کامل تصادفی با سه نوع مادهی اصلاحی پلیمر سوپر جاذب A، پرلیت و زئولیت در پنج سطح (صفر، 5/0، 1، 5/1، و 2 گرم در کیلوگرم خاک) در چهار تکرار اجرا شد. رطوبت خاک در مکشهای 10 تا 1500 کیلو پاسکال در 7 مکش تعیین شد. نتایج پژوهش نشان داد در بین اصلاحکنندهها، پلیمر سوپر جاذب در سطح ۲ گرم در کیلوگرم در مقایسه با تیمار شاهد به ترتیب سبب افزایش تخلخل خاک، میانگین وزنی قطر خاکدانهها و آب قابل استفاده گیاه به میزان 6/2 ،71/2 و 40/1 برابر و کاهش 82/0 برابر جرم مخصوص ظاهری خاک شد. همچنین نتایج نشان داد که در همهی مکشها در تمام تیمارهای آزمایشی، میزان رطوبت نگهداری شده در خاک بهطور معنیداری نسبت به شاهد افزایش یافت. | ||
کلیدواژهها | ||
آب قابل استفاده گیاه؛ تخلخل؛ جرم مخصوص ظاهری؛ منحنی رطوبتی خاک | ||
عنوان مقاله [English] | ||
The Effect of Super Absorbent Polymer A, Perlite, and Zeolite on Physical Properties of Sandy Loam Soil | ||
نویسندگان [English] | ||
marzyeh moradian1؛ Abbas maleki2؛ Afsaneh Alinejadian Bidabadi3 | ||
1Department of Agriculture, Faculty of Agriculture, Lorestan University | ||
2Department of Agriculture, Faculty of Agriculture, Lorestan University | ||
3Soil Science Department, Faculty of Agriculture Lorestan University, Khoramabad, Iran | ||
چکیده [English] | ||
One of the improvement approaches for irrigation efficiency in arid and semi-arid regions is to use soil amendments. The purpose of this study was to investigate the effects of different levels (0, 0.5, 1, 1.5 and 2 g/kg of soil) of superabsorbent polymers A, perlite and zeolite on the physical properties of sandy loam soil in factorial randomized complete block design with four replications. Soil moistures were determined at seven suction points from 10 to 1500 kPa. The results of this study showed that the 2g super adsorbent polymer per kg of soil increased soil porosity, mean weight diameter of aggregates and available water for plant up to 2.6, 2.71 and 1.40 times, and reduced the bulk density of the soil up to 0.82 times, as compared to the control. Also, the results showed that in all suction points, the soil moisture content increased significantly as compared to the control. | ||
کلیدواژهها [English] | ||
Available water, Bulk density, Porosity, Soil moisture curve | ||
مراجع | ||
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