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احمد کوچک زاده

چکیده

به‌منظور بررسي اثر گیاه پیش کشت و میزان کود نیتروژن بر صفات آگرواكولوژيك گیاه خرفه (Portulaca oleraceae L.)، آزمايشي طي سال زراعي 93-1392 در مزرعه تحقيقاتي دانشگاه كشاورزي و منابع طبيعي رامين خوزستان به صورت فاکتوريل-اسپلیت در قالب طرح بلوك‌هاي كامل تصادفي با سه تكرار انجام شد. در اين آزمايش، عامل مصرف کود نیتروژن از منبع اوره در پنج سطح شامل: N1- شاهد یا بدون مصرف کود، N2- 75 کیلوگرم نیتروژن خالص در هکتار، N3- 100 کیلوگرم نیتروژن خالص در هکتار،N4 - 125 کیلوگرم نیتروژن خالص در هکتار و N5-150 کیلوگرم نیتروژن خالص در هکتار و دو نوع گیاه پیش کشت شامل:  P1- گندم نان رقم چمران P2- شبدر برسیم به عنوان عامل دوم مورد بررسي قرار گرفتند. چین برداری (C) نیز به عنوان عامل سوم در کرت‌های فرعی قرار گرفت. نتايج نشان داد كه تناوب زراعي و مصرف كود نيتروژن در گياه پيش كاشت اثر معني‌داري بر تمامی صفات داشت، در حالي‌که اثر چین‌برداری تنها بر برخی صفات مانند عدد کلروفیل‌متر و درصد پروتئین برگ معنی‌دار بود. کاربرد کود نیتروژنه با میزان150 کیلوگرم در هکتار باعث افزایش میزان صفات عملکردی گردید اما نتایج مؤید این موضوع بود که در زمان استفاده از شبدر به‌عنوان پیش کشت می‌توان میزان کود کاربردی را بدون کاهش در میزان عملکرد کمی و کیفی گیاه تعدیل نمود .

جزئیات مقاله

کلمات کلیدی

پروتئین برگ, شبدر برسیم, عددکلروفیل‌متر, گندم, وزن خشک بوته

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ارجاع به مقاله
کوچک زادها. (2018). اثر گیاه پيش‌كاشت و سطوح كود نيتروژن بر برخی صفات آگرواکولوژیک گیاه خرفه(Portulaca oleraceae L.). بوم شناسی کشاورزی, 11(2), 483-498. https://doi.org/10.22067/jag.v11i2.64969
نوع مقاله
علمی - پژوهشی