اثر تراکم و پتاس مصرفی بر عملکرد کمی و کیفی دانه آفتابگردان رقم هایسون
محورهای موضوعی : توليد محصولات زراعي
هدي جمالي
1
( - دانش آموخته كارشناسي ارشد، گروه زراعت ، واحد قائم‌شهر، دانشگاه آزاد اسلامي، قائم شهر – ايران)
کلید واژه: : آفتابگردان, بوته در واحد سطح, پتاسیم, درصد پروتئین و روغن,
چکیده مقاله :
به منظور بررسی اثر تراکم و پتاس مصرفی بر صفات کمی و کیفی آفتابگردان رقم هایسون آزمایش مزرعه‌ای به‌صورت اسپیلت پلات در قالب بلوک‌های کامل تصادفی با چهار تکرار در مركز تحقيقات كشاورزي و منابع طبيعي استان مازندران (ايستگاه دشت ناز ساري) در سال 1388 اجرا گردید. در اين آزمايش تراكم 55 ، 66، 83 و111هزار بوته آفتابگردان رقم هایسون به عنوان عامل اصلي و پتاسیم شامل سه سطح 0 ، 50 و 100 كيلوگرم در هكتار به عنوان عامل فرعي در نظر گرفته شد. اثر تراکم و پتاسیم بر میزان پروتئین دانه معنی دار نشد اما و بر قطر طبق، تعداد ردیف دانه، دانه‌های پر در طبق و عملکرد دانه معنی‌دار شد. نتایج آزمایش نشان داد که تراکم 83 هزار بوته در هکتار به همراه 100 کیلوگرم کود پتاسیم، بیشترین تاثیر را در افزایش تعداد ردیف دانه، تعداد دانه‌های پر در طبق و عملکرد دانه دارد. تراکم و پتاسیم اثر معنیداری در افزایش پروتئین دانه نداشته‌اند، اما بیشترین میزان روغن دانه در تراکم 83 هزار بوته در هکتار حاصل شد. این نتایج نشان می‌دهد افزایش تراکم در حد مطلوب موجب افزایش اجزاء عملکرد دانه در واحد سطح و در نتیجه افزایش عملکرد دانه می‌شود.
In order to study the effect of plant density on quantitative and qualitative yield of sunflower var. Hayson, a field experiment was conducted as a randomized complete block design with four replications in Agricultural and Natural Resources Research in Mazandaran province ( Sari – Dashte Naz ) in crop year of 2009. In this experiment, four density levels 55, 63, 83, 111 thousand plants per hectare ) were considered as the main factor and three levels of potassium as ( 0, 50, 100kg per hectare ) as the sub factor. Analysis of variance showed that the density had significant effect on seed protein and the percentage of oil, but the number of rows of seeds, the number of filled seeds and seed yield were not significantly affected by the density. The results showed that the density of 83 thousand plants per hectare with 100kg potassium fertilizer had the greatest impact on increasing of the number of rows of sees, number of filled grain and seed yield. Density and potassium levels did not have significant effect on seed protein but the greatest oil percentage belonged to 83 thousand plants per hectare. On the basis of results, it is defined that increasing density on the optimum level, caused to increase yield components, oil percentage and seed yield.
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