نوع مقاله : مقاله پژوهشی
نویسندگان
گروه زراعت و اصلاح نباتات دانشگاه محقق اردبیلی، اردبیل
چکیده
به منظور بررسی تاثیر کودهای زیستی بر عملکرد و برخی صفات بیوشیمیایی و فیزیولوژیک جو رقم سهند تحت شرایط دیم و آبیاری تکمیلی، آزمایش فاکتوریلی در قالب طرح پایه بلوک‌های کامل تصادفی با سه تکرار در سال زراعی 96-1395 در روستای ویند کلخوران اردبیل اجرا شد. فاکتورهای مورد بررسی شامل سطوح آبیاری (عدم آبیاری (شرایط دیم)، آبیاری تکمیلی در زمان 50 درصد مراحل آبستنی و سنبله دهی) و کاربرد کودهای زیستی در چهار سطح (عدم کاربرد کودهای زیستی (شاهد)، کاربرد میکوریز، ازتوباکتر، کاربرد توام ازتوباکتر و میکوریز) بودند. نتایج نشان داد بیش‌ترین فعالیت آنزیم‌های کاتالاز، پلی فنل اکسیداز، پراکسیداز (به ترتیب 99.9، 66.9، 78.2 تغییرات جذب در میکروگرم پروتئین بر دقیقه)، محتوای پرولین و قند محلول (به ترتیب 10.25 میکرو گرم بر گرم وزن تر برگ و 105.7 میلی گرم بر گرم وزن تر برگ) در کاربرد توام میکوریز و ازتوباکتر تحت شرایط دیم بدست آمد. بیش‌ترین عملکرد دانه (2682 کیلوگرم در هکتار) مربوط به آبیاری تکمیلی در مرحله آبستنی با کاربرد توام میکوریز و ازتوباکتر و کم‌ترین آن (2065 کیلوگرم در هکتار) تحت شرایط دیم و عدم کاربرد کودهای زیستی بدست آمد. از این رو به نظر می‌رسد که کاربرد کودهای زیستی و آبیاری تکمیلی می‌تواند به عنوان یک روش مناسب برای افزایش عملکرد دانه جو دیم سهند به کار برده شود.
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