تاثیر کاربرد نیتروکسین و سطوح مختلف نیتروژن بر عملکرد و اجزای عملکرد ذرت (هیبرید ماکزیما) در استان مرکزی

الموضوعات : یافته های نوین کشاورزی

علیرضا دادیان ¹ ( دانشگاه آزاد اسلامی، واحد فراهان، گروه کشاورزی، فراهان، ایران )
شهاب خاقانی ² ( دانشگاه آزاد اسلامی، واحد اراک، گروه کشاورزی، اراک، ایران )
مهدی چنگیزی ³ ( دانشگاه آزاد اسلامی، واحد اراک، گروه کشاورزی، اراک، ایران )

تاريخ الإرسال : 14 الخميس , صفر, 1437 تاريخ التأكيد : 14 الخميس , صفر, 1437 تاريخ الإصدار : 12 الأربعاء , رجب, 1434

الکلمات المفتاحية: عملکرد, ذرت, نیتروژن, اجزاء عملکرد, نیتروکسین,

ملخص المقالة :

این آزمایشی در سال زراعی1390 در اراک اجرا گردید. تیمارهای آزمایشی شامل نیتروکسین در دو سطح بدون تلقیح و تلقیح با نیتروکسین و نیتروژن در 5 سطح صفر، 75، 150، 225 و 300 کیلوگرم در هکتار به صورت خالص و با استفاده از کود اوره 46% بودند که به صورت فاکتوریل و در قالب طرح پایه بلوک های کامل تصادفی اجرا شد. نتایج نشان داد تاثیر نیتروکسین بر تعداد ردیف در بلال، تعداد دانه در ردیف، تعداد دانه در بلال، تعداد کل بذر در گیاه، وزن هزار دانه و عملکرد دانه موثر بود به نحوی که کاربرد نیتروکسین سبب بهبود صفات مذکور گردید. تاثیر نیتروژن نیز بر صفات مذکور معنی دار شد، به طوری که مصرف آن تا 300 کیلوگرم در هکتار موجب افزایش این صفات به جز تعداد ردیف در بلال شد در حالی که بیشترین تعداد دانه در بلال با مصرف 225 کیلوگرم در هکتار نیتروژن به دست آمد. اثر متقابل نیتروکسین و نیتروژن بر تعداد دانه در ردیف و تعداد دانه در بلال معنی دار شد. افزایش مصرف نیتروژن تا 300 کیلوگرم در هکتار توام با کاربرد نیتروکسین افزایش این صفات را نتیجه داد. بیشترین مقدار عملکرد دانه با میانگین 9720 کیلوگرم در هکتار از تیمار کاربرد نیتروکسین همراه با مصرف 225 کیلوگرم در هکتار نیتروژن حاصل شد.

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