اثر زئولیت بر کاهش اثرات تنش خشکی در ارقام مختلف کلزا در شرایط اقلیمی فیروزکوه

نوع مقاله: پژوهشی

نویسنده

باشگاه پژوهشگران جوان و نخبگان، واحد فیروزکوه، دانشگاه آزاد اسلامی، فیروزکوه، ایران

10.22034/aej.2018.538879

چکیده

به منظور تعیین نقش زئولیت در کاهش اثرات تنش خشکی در چند رقم کلزا، آزمایش مزرعه ­­ای در شرایط اقلیمی فیروزکوه به صورت فاکتوریل کرت خرد شده در قالب طرح بلوک­ های کامل تصادفی در منطقه  فیروزکوه انجام شد. ارقام کلزا شامل Kr18، Karaj1، Ks12، Goliath، Hyola401، Karaj2، Eagle، SW،  Come و Hyola420 بودند. دو عامل میزان آبیاری و کاربرد یا عدم کاربرد زئولیت در کرت­ های اصلی و ارقام کلزا در کرت­ های فرعی قرار گرفتند. آبیاری در سه سطح شامل آبیاری معمول، قطع آبیاری از مرحله گلدهی و خورجین­ دهی انجام شد. زئولیت به میزان 8 تن در هکتار قبل از کاشت همراه با شخم اولیه، توزین و به خاک اضافه شد. اجزای عملکرد تحت شرایط تنش خشکی کاهش یافت و منجر به کاهش عملکرد دانه گردید. کاربرد زئولیت منجر به افزایش عملکرد دانه و روغن دانه شد.  بیشترین عملکرد دانه در آبیاری مطلوب بدون توجه به کاربرد زئولیت به دست آمد. در شرایط کاربرد زئولیت رقم Kr18 بیشترین عملکرد را به خود اختصاص داد ولی در صورت عدم استفاده از زئولیت رقم Eagle گزینه­ مناسب ­تری بود. در شرایط تنش آبی، استفاده از زئولیت برای جلوگیری از کاهش عملکرد، توصیه می ­شود.

کلیدواژه‌ها


عنوان مقاله [English]

Application of zeolite to alleviate of drought stress in rapeseed cultivars in Firoozkooh, Iran climate condition

نویسنده [English]

  • Mehdi Oshri
Young Researcher and Elite Club, Firoozkooh branch, Islamic Azad University, Firoozkooh, Iran
چکیده [English]

To investigate the effect zeolite application in alleviation of drought stress in some rapeseed cultivars, a field experiment was conducted based on randomized complete block design in factorial-split plot experiment in Firoozkooh, Iran climate condition.  Rapeseed cultivars consist of Kr18, Karaj1, Ks12, Goliath, Hyola401, Karaj2, Eagle, SW, Comet and Hyola420. Two factors including irrigation levels and zeolite application were placed in main plots and rapeseed cultivars assigned in subplots. Irrigation was applied in three levels of normal irrigation, irrigation cutting-off in flowering and podding stages. Zeolite applied as pre-plant in 8 tons/ha rate along with initial plowing adding to the soil. The yield components decreased under drought stress conditions and ultimately led to a significant decrement in seed yield. Application of zeolite resulted in increasing of seed yield and seed oil content.  The highest seed yield was obtained in normal irrigation regardless of zeolite application. In zeolite application cases, the Kr18 cultivar had the highest yield, Eagle cultivar was better in case of zeolite lack. Therefore, in drought stress condition, it is recommended to use zeolite to prevent seed yield losses in rapeseed cultivars.

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