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

یافته های نوین کشاورزی

مقاله 2، دوره 7، شماره 3 (بهار 1392) 27، خرداد 1392، صفحه 211-225   

نوع مقاله: علمی پژوهشی

نویسندگان

علیرضا دادیان^{* 1}؛ شهاب خاقانی²؛ مهدی چنگیزی²

¹دانشگاه آزاد اسلامی، واحد فراهان، گروه کشاورزی، فراهان، ایران

²دانشگاه آزاد اسلامی، واحد اراک، گروه کشاورزی، اراک، ایران

چکیده

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 به­جز 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.

کلیدواژه‌ها

نیتروکسین؛ نیتروژن؛ عملکرد؛ اجزاء عملکرد؛ ذرت

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