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تعیین مهمترین ویژگیهای حاصلخیزی خاک مؤثر بر محصول برنج در اراضی شالیزاری با استفاده از تحلیل مؤلفه‌های اصلی | ||
| تحقیقات آب و خاک ایران | ||
| مقاله 3، دوره 50، شماره 1، فروردین و اردیبهشت 1398، صفحه 25-38 اصل مقاله (692.97 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ijswr.2018.226317.667621 | ||
| نویسندگان | ||
| بهاره دلسوز خاکی1؛ ناصر هنرجو2؛ ناصر دواتگر** 3؛ احمد جلالیان4؛ حسین ترابی گل سفیدی5 | ||
| 1موسسه تحقیقات خاک و آب/ دانش آموخته دکتری، دانشگاه آزاد اسلامی، واحد اصفهان ( خوراسگان)، گروه علوم خاک، اصفهان، ایران | ||
| 2استادیار دانشگاه آزاد اسلامی، واحد اصفهان(خوراسگان)، گروه علوم خاک، اصفهان، ایران | ||
| 3دانشیار پژوهش، موسسه تحقیقات خاک و آب، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران | ||
| 4استاد ، گروه علوم خاک ، دانشگاه آزاد اسلامی واحد اصفهان(خوراسگان) ، اصفهان ، ایران | ||
| 5دانشگاه شاهد-عضو هیات علمی گروه خاکشناسی دانشکده علوم کشاورزی | ||
| چکیده | ||
| روشهای آماری چند متغیره مانند تحلیل مؤلفه‌های اصلی و رگرسیونها میتوانند برای تسهیل تفسیر روابط پیچیده استفاده شوند. هدف از این مطالعه تعیین مهمترین ویژگیهای حاصلخیزی خاک، مؤثر بر محصول برنج در اراضی شالیزاری بود. به این منظور نمونههایی از لایه شخم 119 نقطه با توزیع جغرافیایی مناسب، در اراضی شالیزاری شهرستانهای شفت و فومن استان گیلان برداشت شد. پس از آن، ویژگیهای فیزیکی و شیمیایی مرتبط با حاصلخیزی خاک در این نمونهها اندازهگیری و با استفاده از روشهای آمار توصیفی، آنالیز مؤلفه‌های اصلی و رگرسیون تحلیل شدند. نتایج نشان داد سه مؤلفه اصلی با مقادیر ویژه بیشتر از یک مانند «پتاسیم و عوامل مؤثر در نگهداری آن»، «نیتروژن کل و عوامل مؤثر بر تأمین آن» و «فسفر قابل استفاده و ضخامت افق سطحی خاک»، بیشتر از 4/67 درصد از تغییرپذیری در ویژگیهای فیزیکی و شیمیایی خاک و 55 درصد از تغییرپذیری محصول برنج را توصیف می‌کنند. همچنین ویژگیهای مرتبط با این مولفهها 80 درصد از تغییرپذیری محصول را توصیف نمودند. بنابراین برای افزایش محصول، عملیات مدیریتی مانند مصرف صحیح کودهای محتوی نیتروژن، پتاسیم و فسفر و خاکورزی مناسب به منظور ایجاد لایه شخم مناسب توصیه میشود. | ||
| کلیدواژه‌ها | ||
| استان گیلان؛ آمار چند متغیره؛ محصول برنج؛ ویژگیهای فیزیکی و شیمیایی خاک | ||
| عنوان مقاله [English] | ||
| Determining the most important soil fertility properties affecting rice yield in paddy fields using principal component analysis | ||
| نویسندگان [English] | ||
| Bahareh Delsouz Khaki1؛ Naser Honarjoo2؛ Naser Davatgar3؛ Ahmad JALALIAN4؛ Hossein Torabi5 | ||
| 1PhD Graduate, Department of Soil Science, College of Agriculture, Isfahan ( Khorasgan) Branch , Islamic Azad University, Isfahan, Iran | ||
| 2Assistant Professor, Department of Soil Science, College of Agriculture, Isfahan (Khorasgan) Branch , Islamic Azad University, Isfahan, Iran | ||
| 3Associate Professor, Soil and Water Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran | ||
| 4Professor of Soil Science, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran | ||
| 5Assistant Professor, Department of Agriculture, Shahed University, Tehran, Iran | ||
| چکیده [English] | ||
| Multi-variate statistical methods such as principal component analysis (PCA) and regressions could be used to facilitate the interpretation of complex relationships. The objective of this study was to determine the most important soil fertility properties affecting rice yield in the paddy fields. For this purpose, soil samples were taken from the plow layers of 119 points with suitable distribution in the paddy fileds located in Shaft and Fouman cities of Guilan province. Then after, physical and chemical properties of the soil fertility were measured and analysed using descriptive statistics, principal component analysis and regression methods. Results showed that three PCs with eigen values greater than one named as “k and it’s preservation factors”, ”Total N and it’s provider factors” and ”P and Thickness of plow layer” are respectively explained more than 67.4% of the variability in the soil physical and chemical properties and 55% of the yield variability. In addition, the corresponded properties to the PCs explained 80% of the yield variability. Consequently, in order to increase the yield, management practices such as proper fertilizer applications of nitrogen, potassium and phosphorous and proper tillage for creating suitable plow layer are recommended. | ||
| کلیدواژه‌ها [English] | ||
| Guilan province, multivariate statistics, rice yield, soil physical and chemical properties | ||
| مراجع | ||
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