اثر کمپوست آزولا بر پارامترهای کمی و کیفی برنج تحت تلقیح با باکتریهای محرک رشد گیاه

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار، گروه زراعت و اصلاح نباتات، واحد رشت، دانشگاه آزاد اسلامی، رشت، ایران.

2 دانشیار، هیات علمی موسسه تحقیقات خاک و آب، کرج، ایران.

3 دانش آموخته کارشناسی ارشد زراعت، واحد رشت، دانشگاه آزاد اسلامی، رشت، ایران.

چکیده

به‌‌منظور بررسی اثر کمپوست آزولا پارامترهای کمی و کیفی برنج تحت تلقیح با باکتری‌های محرک رشد گیاه، آزمایشی به‌صورت فاکتوریل در قالب طرح بلوک‌های کامل تصادفی با سه تکرار در در استان گیلان انجام شد. فاکتورهای آزمایشی شامل سه سطح کمپوست آزولا (صفر، 5 و 10 تن در هکتار) و باکتری‌های محرک رشد گیاه در سه سطح (عدم تلقیح، هربا‌سپیریلوم، آزوسپیریلوم) بودند. نتایج نشان داد که اثر باکتری بر فسفاتاز اسیدی و قلیایی معنی‌دار بود به طوری که باکتری آزوسپریلوم برتری معنی‌دار نسبت به تیمار عدم تلقیح و باکتری هرباسپریلوم داشت. همچنین کاربرد ۱۰ تن در هکتار کمپوست آزولا افزایش معنی‌دار در فعالیت فسفاتاز اسیدی نسبت به عدم کاربرد کمپوست نشان داد. همچنین برهمکنش کمپوست آزولا و باکتری‌ بر تعداد پنجه، تعدادپنجه، طول بوته، تعداد دانه پر در خوشه، عملکرد بیولوژیک و عملکرد شلتوک معنی‌دار بود. حداکثر عملکرد شلتوک از تیمار ۱۰ تن در هکتار کمپوست آزولا + باکتری آزوسپربلوم با میانگین ۷۹۴۶ کیلوگرم در هکتار به دست آمد که نسبت به تیمار شاهد ۲۸/۳۱ درصد و تیمار ۱۰ تن در هکتار کمپوست آزولا، ۴۷/۲۷ درصد افزایش عملکرد نشان داد. همچنین تلقیح باکتریایی، فسفر دانه را نسبت به تیمار عدم تلقیح به طور معنی‌دار افزایش داد. ضمن آن که بیشترین مقدار فسفر و پتاسیم دانه به ترتیب از سطح ۱۰ و ۵ تن در هکتار کمپوست آزولا مشاهده شد. بنابراین با توجه به نتایج به دست آمده برای حصول حداکثر عملکرد برنج کاربرد ۱۰ تن در هکتار کمپوست آزولا به همراه تلقیح با باکتری آزوسپریلوم پیشنهاد می‌شود.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of Azolla compost on qualitative and quantitative parameters of rice under PGPRs inoculated

چکیده [English]

In order to evaluate the effect of Azolla compost on qualitative and quantitative parameters of the rice under PGPRs inoculated, a factorial experiment in a randomized complete block design with three replications was conducted in Guilan province. Experimental Factors including Azolla compost (0, 5 and 10 ton.ha-1) and plant growth promoting bacteria (non-inoculated, Herbaspirillum, Azospirillum). The results showed that the bacterial effect on acidic and alkaline phosphatase was significant so that the Azospirillum was superiority compared to non-inoculated treatment and Herbaspirillum. The use of 10 ton.ha-1 of Azolla compost significantly increased in activity of acid phosphatase. Interaction of Azolla compost and PGPRs on tiller numbers, plant height, grains number.panicle-1, biomass and grain yield were significant. The maximum grain yield was obtained from 10 ton.ha-1 of Azolla compost + Azospirillum with 7946 kg.ha-1 that compared to the control and 10 ton.ha-1 of Azolla compost had increased 31.28 and 27.47 percent, respectively. The bacterial inoculation, increased significantly phosphorous compared with non-inoculated treatment. While the maximum amount of phosphorus and potassium was observed. 10 and 5 ton.ha-1 of Azolla compost, respectively. Thus, according to the results obtained for the maximum seed yield 10 ton.ha-1 of Azolla compost as well as Azospirillum inoculation is recommended.

کلیدواژه‌ها [English]

  • "Acidic and alkaline Phosphatase"
  • " Azospirillum"
  • " Herbaspirillum"
  • " Phosphorus"
  • " Potassium"
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