بررسی تأثیر باکتری های حل کننده فسفات در ترکیب با کود شیمیایی فسفره بر عملکرد هیبریدهای ذرت دانه ای در شمال استان خوزستان
محورهای موضوعی : ژنتیکفاطمه نورکی 1 , مجتبی علوی فاضل 2 , احمد نادری 3 , ابراهیم پناهپور 4 , شهرام لک 5
1 - گروه زراعت، پردیس علوم و تحقیقات خوزستان، دانشگاه آزاد اسلامی، اهواز، ایران.
2 - گروه زراعت، واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران.
3 - مرکز تحقیقات کشاورزی و منابع‌طبیعی خوزستان، اهواز، ایران.
4 - گروه خاکشناسی، واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران.
5 - گروه زراعت، واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران.
کلید واژه: عملکرد دانه, کشاورزی پایدار, باکتری‌های حل کننده فسفات, کود شیمیایی فسفره, هیبرید ذرت,
چکیده مقاله :
به‌منظور بررسی تأثیر باکتری‌های حل کننده فسفات در ترکیب با کود شیمیایی فسفره بر عملکرد هیبریدهای ذرت دانه ای آزمایشی در شمال استان خوزستان در تابستان سال‌های 1393-1392 به روش کرت‌های دوبار خرد شده در قالب طرح بلوک‌های کامل تصادفی با چهار تکرار اجرا شد. تلفیق کود شیمیایی و زیستی به‌عنوان تیمار اصلی در چهار سطح (100درصد کود شیمیایی به تنهایی 25، 50 و 75 درصد تلفیق کود شیمیایی با 100 درصد کود زیستی) در کرت‌های اصلی، هبیریدهای ذرت دانه ای با سه سطح (سینگل کراس 704، مبین و کارون) در کرت‌های فرعی قرار داده شدند. در این تحقیق تلفیق کود شیمیایی با کود زیستی برعملکرد بیولوژیکی در سطح احتمال 5 درصد معنی‌دار و بقیه صفات غیر معنی‌دار گردید. همچنین نوع هیبرید مورد آزمایش نیز دارای تفاوت معنی‌داری در عملکرد و اجزای عملکرد بود ولی بر شاخص برداشت اثر غیرمعنی‌داری بر جای گذاشت. بیشترین عملکرد دانه با مقدار 12875 کیلوگرم در هکتار متعلق به سینگل کراس 704 با تلفیق 25 درصد تلفیق کود شیمیایی و زیستی و کمترین مقدار نیز با 10215 کیلوگرم در هکتار به هیبرید مبین با 25 درصد تلفیق کود شیمیایی و زیستی تعلق داشت. با توجه به نتایج حاصله به نظر می رسد که تلفیق کود شیمیایی با کود زیستی توانست سبب افزایش عملکرد در هیبریدهای سینگل کراس 704 و کارون شود و هیبرید مبین از قابلیت کودپذیری پایین تری برخوردار بود.
In order to study the effect of phosphate solubilizing bacteria in combination with phosphorus fertilizer on yield of corn hybrids, the experiment was carried out in the north of Khuzestan province during the summer of 2013-2014 by a split plot design in the form of randomized complete block with four replications. Combining biological and chemical fertilizers as main factors at four levels (100% chemical fertilizer, 75%, 50% and 25% chemical fertilizer combined with 100% bio-fertilizer) were used in the main plots and corn hybrids pellets with three levels (S.C 704, S.C Mobin, S.C Karoon) were used in sub plots. In this study the combination of chemical fertilizer with biofertilizer had a significant effect on biological yield at 5% level while the other traits were not significant. Also, the hybrid type had a significant effect on yield components; however, the harvest index was not significant. It seems that combination of chemical fertilizer with biofertilizer was able to increase the performance of single cross hybrids and cross hybrids 704 and Karun while Mobin hybrid showed a lower capability for fertilizer.
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