اثر تنش کم آبی و کاربرد مواد جاذب رطوبت بر عملکرد و اجزای عملکرد گندم پاییزه در اراک

نوع مقاله: علمی پژوهشی

نویسندگان

1 دانشگاه آزاد اسلامی واحد اراک، ارشد زراعت، اراک، ایران

2 دانشگاه آزاد اسلامی، واحد فراهان، گروه کشاورزی، فراهان، ایران

3 استادیار گروه زراعت و اصلاح نباتات، دانشگاه آزاد اسلامی، واحد اراک، اراک، ایران

چکیده

به منظور بررسی اثر تنش آبی و مصرف مواد جاذب رطوبت مانند کود دامی، زئولیت و بنتونیت آزمایشی در سال زراعی 90-1389 اجرا شده است. آزمایش به صورت اسپلیت پلات در قالب طرح پایه بلوک های کامل تصادفی با سه تکرار انجام شد. تیمار های آزمایش شامل آبیاری در سه سطح (100%، 85% و 70%) نیاز آبی گیاه که در تیمار اصلی، مصرف مواد جاذب رطوبت در شش سطح (شاهد، کود دامی 30 تن در هکتار، کود دامی 15 تن درهکتار + 4 تن زئولیت درهکتار، کود دامی 15 تن درهکتار+ 2 تن بنتونیت در هکتار، 4 تن زئولیت در هکتار + 2 تن بنتونیت در هکتار و کود دامی 15 تن در هکتار + 4 تن زئولیت در هکتار + 2 تن بنتونیت درهکتار) در کرت های فرعی روی گندم رقم الوند، انجام شد. نتایج استفاده از تیمارهای کودی نشان داده که تاثیر معنی داری بر شاخص برداشت خوشه ، تعداد سنبلچه و دانه در خوشه داشته است. در بین اثرات متقابل تیمار تعداد دانه در سنبله و وزن هزار دانه در سطح یک درصد و عملکرد دانه در سطح پنج درصد معنی دار بود. در سطح آبیاری شاهد مصرف زئولیت و کود دامی بالاترین عملکرد، درسطح آبیاری 85 % تنش آبی مصرف 30تن کود دامی و در سطح آبیاری 70% تنش آبی مصرف زئولیت و کود دامی بالاترین عملکرد را داشته اند. نتایج نشان داد مصرف زئولیت همراه کود دامی می تواند عملکرد را افزایش دهد. با توجه به خشک سالی های چند سال گذشته و محدویت های آبیاری که در کشور وجود دارد و قیمت مناسب زئولیت و دوام پنج ساله آن می توان برای کاهش خسارت ناشی از آبیاری به کشاورزان توصیه نمود.

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