مطالعه دامنه وسیع تراکم بوته بر عملکرد و اجزای عملکرد ارقام کلزا (Brassica napus L.)

بوم شناسی کشاورزی

مقاله 1، دوره 12، شماره 1 - شماره پیاپی 43، فروردین 1399، صفحه 1-13   

نوع مقاله: علمی - پژوهشی

شناسه دیجیتال (DOI): 10.22067/jag.v12i1.40807

نویسندگان

علیرضا کوچکی^{* 1}؛ مهدی عزیزی²؛ علی نوروزیان¹؛ سمانه نجیب نیا¹

¹گروه اگروتکنولوژی، دانشکده کشاورزی، دانشگاه فردوسی مشهد، مشهد، ایران

²مرکز تحقیقات کشاورزی و منابع طبیعی خراسان رضوی

چکیده

به‌منظور تعیین بهترین تراکم بوته ارقام کلزا (Brassica napus L.)، آزمایشی به‌صورت فاکتوریل در قالب طرح پایه بلوک‌های کامل تصادفی با سه تکرار در مزرعه تحقیقاتی دانشکده کشاورزی دانشگاه فردوسی مشهد در سال زراعی 90- 1389 به‌اجرا در آمد. فاکتور‌ها شامل دو رقم کلزا (هایولا 401 و مودنا) و شش سطح تراکم بوته (40، 70، 100، 130، 160 و 190 بوته در مترمربع) بودند. نتایج نشان داد که بین تیمارها از نظر تعداد شاخه فرعی در بوته، تعدادخورجین در بوته، تعداد دانه در خورجین،، وزن هزار دانه، عملکرد بیولوژیک و عملکرد دانه، شاخص برداشت و درصد روغن اختلاف معنی‌‌داری وجود داشت. میانگین عملکرد دانه در رقم مودنا 5/13 درصد بیشتر از رقم هایولا بود. تعداد خورجین در بوته در رقم مودنا به‌طور معنی‌داری بیشتر از رقم هایولا بود. با افزایش تراکم از 40 تا 190 بوته در مترمربع تعداد شاخه فرعی در بوته کاهش و ارتفاع بوته افزایش یافت. تراکم 70 بوته در مترمربع از نظر تعداد دانه در خورجین، عملکرد بیولوژیک، شاخص برداشت و درصد روغن نسبت به سایر تراکم‌های گیاهی برتری نشان داد.

کلیدواژه‌ها

عملکرد دانه؛ رقم؛ روغن؛ عملکرد دانه؛ شاخص برداشت

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