اثرات آرایش کاشت و محلول¬پاشی عناصر آهن، روی و بور بر عملکرد و اجزاء عملکرد ذرت رقم 704
الموضوعات :
1 - دانش آموخته كارشناسي ارشد گروه زراعت واحدخوي ، دانشگاه آزاد اسلامي ، خوي – ايران.
2 - گروه زراعت و اصلاح نباتات، واحد خوی، دانشگاه آزاد اسلامی، خوی، ایران.
الکلمات المفتاحية: : آرایش کاشت, ذرت 704, عناصر ریزمغذی, محلول¬پاشی,
ملخص المقالة :
به منظور بررسی اثرات آرایش کاشت و محلول¬پاشی عناصر ریزمغذی بر عملکرد و اجزاء عملکرد ذرت رقم 704 پژوهشی به صورت بلوک¬های خرد شده نواری در قالب طرح بلوك¬هاي كامل تصادفي با چهار تکرار در ایستگاه تحقیقات کشاورزی شهرستان خوی در سال زراعی 1385 به اجرا در آمد. در این تحقیق کرت اصلی دارای دو سطح الگوی کاشت مستطیلی و الگوی کشت مربع بود. کرت فرعی محلول¬پاشی کودهای ریزمغذی در هشت تيمار شامل: عدم مصرف کود ریزمغذی (شاهد)، محلول¬پاشی آهن، روی، بور، آهن و روی، آهن و بور، روی و بور، آهن، روی و بور بود. محلول¬پاشی با غلظت 5 در هزار انجام گردید. نتایج نشان داد صفات طول بلال، وزن هزار دانه و عملکرد دانه در واحد سطح تحت تاثیر هر دو فاکتور قرار گرفتند. ارتفاع بوته و تعداد دانه در بلال تنها تحت تاثیر محلول¬پاشی عناصر ریزمغذی قرار گرفتند. اثر متقابل دو فاکتور بر شاخص برداشت معنی¬دار بود. در کل با توجه به نتایج به دست آمده، ایجاد آرایش کاشت مربع و محلول¬پاشی عناصر ریزمغذی باعث بهبود عملکرد و اجزاء عملکرد شدند، به طوری¬که بیشترین عملکرد دانه از آرایش کاشت مربع با 96/9 تن در هکتار و همچنین محلول¬پاشی آهن، روی و بور با 4/10 تن در هکتار به دست آمد.
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