مطالعه کیفیت و عملکرد دانه کلزا رقم هایولا 401 با کود مرکب آهن، روی و منگنز تحت تنش قطع آبیاری

نوع مقاله: مقاله پژوهشی

نویسندگان

1 استادیار، گروه خاکشناسی، واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران

2 استادیار، گروه زراعت، واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران

3 باشگاه پژوهشگران جوان و نخبگان، واحد اهواز، دانشگاه آزاد اسلامی اهواز، ایران

چکیده

به منظور مطالعه خواص کیفی و عملکرد دانه کلزا رقم هایولا 401 در واکنش به محلول‌پاشی کود ریزمغذی مرکب آهن، روی و منگنز تحت تنش قطع آبیاری، این تحقیق در سال زراعی 97-1396 در منطقه آب و هوایی حمیدیه به صورت کرت‌های خرد شده در قالب طرح بلوک‌های کامل تصادفی در چهار تکرار اجرا شد. تیمارهای آزمایش شامل تنش قطع آبیاری در دو سطح آبیاری مطلوب، قطع آبیاری در مرحله خورجین‌دهی در کرت‌های اصلی و محلول‌پاشی کود مرکب ریزمغذی آهن ، روی و منگنز در چهار سطح شامل عدم محلول‌پاشی (شاهد)، و محلول‌پاشی با غلظت‌های دو در هزار، چهار در هزار و شش در هزار در کرت‌های فرعی بودند. نتایج نشان تنش قطع آبیاری بر شاخص سطح برگ، عملکرد دانه، میزان پروتئین دانه، عملکرد پروتئین، درصد آهن و روی دانه تأثیر معنی‌داری داشت. همچنین با افزایش غلظت کود ریزمغذی، عملکرد دانه، میزان پروتئین دانه، عملکرد پروتئین، درصد آهن و روی دانه افزایش یافت. در شرایط آبیاری مطلوب و محلول‌پاشی با غلظت شش در هزار بالاترین مقادیر بدست آمد که این نتایج با تیمار محلول پاشی با غلظت چهار در هزار تفاوت معنی‌داری نداشت. بیشترین عملکرد دانه با میانگین 3290.4 کیلوگرم در هکتار در شرایط آبیاری مطلوب و محلول‌پاشی چهار در هزار بدست آمد. در این آزمایش محلول-پاشی عناصر ریزمغذی موجب کاهش خسارت ناشی از تنش قطع آبیاری بر عملکرد دانه و نیز افزایش درصد آهن و روی دانه گردید. به طور کلی می‌توان نتیجه گرفت اگرچه تنش قطع آبیاری باعث کاهش رشد و عملکرد کلزا شد ولی استفاده از عناصر ریزمغذی به میزان چهار در هزار توانسته تا 35% کاهش عملکرد را جبران کند.

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مقالات آماده انتشار، پذیرفته شده
انتشار آنلاین از تاریخ 01 فروردین 1399
  • تاریخ دریافت: 21 مرداد 1397
  • تاریخ بازنگری: 13 شهریور 1397
  • تاریخ پذیرش: 14 شهریور 1397