بررسی نقش کودهای بیولوژیک بر خصوصیات کمی ذرت شیرین در تراکم های مختلف کاشت
محورهای موضوعی : Biotechnological Journal of Environmental Microorganisms
سحر دعائی
1
(گروه زراعت ، واحد لاهیجان ، دانشگاه آزاد اسلامی ، لاهیجان، ایران)
کلید واژه: کود زیستی, تراکم کاشت , ذرت, عملکرد, اجزای عملکرد ,
چکیده مقاله :
به‌منظور بررسی اثر کودهای زیستی(بیولوژیک) و تراکم کاشت بر عملکرد و اجزای عملکرد ذرت شیرین(رقم ساری ۲۸۰۲) آزمایشی به‌صورت کرت یک بار خرد شده در قالب طرح بلوک‌های کامل تصادفی با سه تکرار و به‌صورت مزرعه‌ای در سال 1400 در منطقه لاهیجان در استان گیلان به اجرا درآمد. عامل اصلی کود زیستی در چهار سطح شاهد=F1، ازته بارور۱ F2=، فسفاته بارور-۲ F3=، فسفاته بارور-۲+ ازته بارور۱F4= بود. عامل فرعی تراکم بوته در سه سطح ۵۵۰۰۰D1=، ۶۵۰۰۰ D2= و ۷۵۰۰۰D3= بوته در هكتار بود. نتایج نشان داد که استفاده از کود زیستی بر ارتفاع بوته، تعداد دانه در بلال، طول بلال، ماده خشک کل، عملکرد دانه و وزن هزار دانه تاثیری مثبت داشت. بیش‌ترین وزن هزار دانه (۳۸۳ گرم) در تیمار F4D2 (کاربرد کود زیستی ازته بارور۱ + فسفاته بارور-۲ و تراکم۶۵ هزار بوته در هکتار)، بیش‌ترین ماده خشک کل (۲۶۲۴۰ کیلوگرم در هکتار) در تیمار F4D2 (کاربرد کود زیستی ازته بارور۱ + فسفاته بارور-۲ و تراکم۶۵ هزار بوته در هکتار)و بیش‌ترین عملکرد دانه (۹۱۴۶ کیلوگرم در هکتار) در تیمار F4D2 (کاربرد کود زیستی ازته بارور۱ + فسفاته بارور-۲ و تراکم۶۵ هزار بوته در هکتار) به دست آمد. نتایج نشان داد که تراکم ۶۵ هزار بوته در هکتار و کاربرد کود زیستی ازته بارور۱ + فسفاته بارور-۲ به‌عنوان مناسب‌ترین تیمار بود.
The effect of biofertilizers and plant density was investigated on yield and yield components of sweet corn cv. ‘Sari 2802’ in a split-plot field experiment based on a randomized complete block design with three replications in Lahijan, Guilan province in 2021. The main plot was assigned to biofertilizer at four levels of control (F1), using N-Fertile 1 (F2), phosphate fertile2 (F3), and N-Fertile 1 + Phosphate fertile 2 (F4), and the sub-plot was assigned to plant density at three levels of 55,000 (D1), 65,000 (D2), and 75,000 plants/ha (D3). The results showed that the application of biofertilizer influenced plant height, grain number per ear, ear length, total dry matter, grain yield, and 1000-grain weight positively. The highest 1000-grain weight (383 g), the highest total dry matter (26240 kg/ha), and the highest grain yield (9146 kg/ha) were obtained from F4D2 (N-1 + P-2 and the density of 65,000 plants/ha). The results showed that the density of 65,000 plants/ha and the application of N-1 and P-2 biofertilizers was the best treatment.
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