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علیرضا کوچکی مهدی نصیری محلاتی جواد عظیم زاده

چکیده

به‌منظور بررسي اثر سيستم‌هاي مختلف خاک‌ورزی و مديريت بقاياي گياهي بر عملكرد و اجزاي عملكرد گندم (Triticum aestivum L.)  در تناوب آيش گندم ديم، آزمايشي به‌‌صورت کرت‌های نواری، در قالب طرح بلوک‌های کامل تصادفی و در سه تكرار در دو سال زراعي 93-1392 و 94-1393 در شهرستان شیروان اجرا شد. فاکتورهای آزمايش شامل خاک‌ورزی و مديريت بقاياي گياهي بود. سطوح خاک‌ورزی عبارت بودند از، بدون خاک‌ورزی، خاک‌ورزی با گاوآهن قلمي، خاک‌ورزی با گاوآهن پنجه‌غازی و برگردان‌دار. سطوح بقاياي گياهي شامل نگهداري هفت تن بقايا در هکتار، 5/3 تن بقایا در هکتار و بدون بقايا بود. نتايج آزمايش نشان داد كه وزن مخصوص ظاهري در عمق 10 تا 20 سانتي‌متري خاك در مقايسه با عمق صفر تا 10 سانتي‌متري افزايش يافت. تخلخل خاك از روندي برخلاف وزن مخصوص ظاهري خاك تبعيت نمود. نگهداري بقاياي گياهي موجب كاهش وزن مخصوص ظاهري و افزايش رطوبت خاك شد. خاك‌ورزي با گاوآهن برگردان‌دار در تمام سطوح بقاياي گياهي كمترين وزن خشك علف‌هاي هرز را در مقايسه با ساير تيمارها دارا بود. بيشترين مقدار خاك‌دانه‌هاي بزرگ‌تر از نیم ميلي‌متر و كمترين مقدار خاك‌دانه‌هاي كوچك‌تر از نیم ميلي‌متر در سيستم خاك‌ورزي با گاوآهن برگردان‌دار مشاهده شد. عملكرد دانه و زيست‌توده در سيستم خاك‌ورزي با گاوآهن برگردان‌دار در مقايسه با ساير سيستم‌هاي خاك‌ورزي بيشتر بود.

جزئیات مقاله

کلمات کلیدی

خاک‌ورزی حفاظتي, دانه‌بندي خاك, رطوبت خاك, گاوآهن برگردان‌دار

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ارجاع به مقاله
کوچکیع., نصیری محلاتیم., & عظیم زادهج. (2020). تأثير سیستم‌هاي مختلف خاک‌ورزی و بقایای گیاهی بر عملكرد گندم(Triticum aestivum L.) و خصوصيات فيزيكي خاك در تناوب آیش- گندم در شرایط دیم. بوم شناسی کشاورزی, 12(2), 299-317. https://doi.org/10.22067/jag.v12i2.52175
نوع مقاله
علمی - پژوهشی