تاثیر سطوح کود نانو کلاته نیتروژن و اوره در گیاه گندم در تنش خشکی بعد ازگلدهی
محورهای موضوعی : مجله علمی- پژوهشی اکوفیزیولوژی گیاهینعیمه آستانه 1 , فرود بذر افشان 2 , مهدی زارع 3 , بهرام امیری 4 , عبدالله بحرانی 5
1 - گروه کشاورزی، واحد فیروزآباد، دانشگاه آزاد اسلامی، فیروزآباد، ایران
2 - گروه کشاورزی، واحد فیروزآباد، دانشگاه آزاد اسلامی، فیروزآباد، ایران
3 - گروه کشاورزی، واحد فیروزآباد، دانشگاه آزاد اسلامی، فیروزآباد، ایران
4 - گروه کشاورزی، واحد فیروزآباد، دانشگاه آزاد اسلامی، فیروزآباد، ایران
5 - گروه کشاورزی، واحدرامهرمز ، دانشگاه آزاد اسلامی، رامهرمز، ایران
کلید واژه: تنش خشکی, عملکرد دانه, صفات زراعی, کود نانو, صفات بیوشیمیایی,
چکیده مقاله :
به منظور مقایسه کارایی کود نانو کلاته نیتروژن وکود اوره در گیاه گندم تحت شرایط تنش خشکی آزمایشی به صورت اسپلیت اسپلیت پلات در قالب طرح بلوک کامل تصادفی در دو منطقه نصرآباد وکودیان در استان فارس انجام شد. فاکتور اصلی شامل تیمار آبیاری (آبیاری نرمال و قطع آبیاری در مرحله گلدهی)، فاکتور فرعی شامل مصرف کود اوره درسطوح (0، 37، 74 و 110 کیلوگرم نیتروژن در هکتار) ، و فاکتور فرعی فرعی شامل مصرف کود نانو کلاته نیتروژن در سطوح ( 0، 14، 27 و 41 کیلوگرم نیتروژن در هکتار ) بود . نتایج نشان داد که تیمارهای تنش خشکی، کود اوره و کود نانو کلاته نیتروژن اثر معنی داری بر روی تمام صفات مورد مطالعه داشت. با توجه به مقادیر میانگین، تنش خشکی در مرحله قطع گلدهی باعث کاهش 51 درصدی در عملکرد دانه گندم در مقایسه با آبیاری طبیعی شد. استفاده از کود اوره 37، 74 و 110 کیلوگرم نیتروژن در هکتار باعث افزایش 9، 19 و 27 درصد در عملکرد دانه در مقایسه با شاهد شد. کاربرد کود نانو کلاته نیتروژن در مقادیر 14، 27 و 41 کیلوگرم نیتروژن در هکتار به ترتیب باعث افزایش 31، 44 و 98 درصد افزایش عملکرد دانه نسبت به شاهد بود. در اثر متقابل تنش، اوره و کود نانوکلاته نیتروژن بر عملکرد دانه، مشخص شد که در شرایط نرمال و قطع آبیاری در مرحله گلدهی بالاترین عملکرد دانه (7591 و4091کیلوگرم در هکتار) توسط 110 کیلوگرم نیتروژن در هکتارکود اوره و 41 کیلوگرم نیتروژن در هکتار کود نانو بدست آمد .
This study was performed to evaluation of nano chelated nitrogen and urea fertilizers on wheat plant under drought stress condition. Experimental design was performed as split-split plot in RCBD design in two locations, Nasrabad and Kodiyan in Fars province. The first factor included irrigation treatments (normal and withholding irrigation at flowering stage), sub factor was Urea fertilizer treatment (0, 37, 74 and 110 kg nitrogen .ha-1), and sub-sub factor was nano chelated nitrogen fertilizer (0, 14, 27 and 41 kg nitrogen.ha-1).According to analysis of variances, stress, nitrogen (urea) and nano chelated nitrogen had significant effects on all studied traits. According to mean comparisons, drought stress led to 51% reduction in seed yield compared to normal irrigation. Application of urea 37, 74 and 110 kg nitrogen.ha-1 led to 9, 19 and 27% increase in seed yield compared to control, respectively. Application of 14, 27 and 41 kg nitrogen.ha-1 from nano fertilizer led to 31, 44 and 98% increase in seed yield compared to control, respectively. In interaction between stress, urea and nano fertilizer on seed yield, was found that at normal and stress condition the highest mean of seed yield (7591 and 4091 kg.ha-1) was obtained by 110 kg.ha-1 urea and 41 kg.ha-1 nano fertilizer.
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