اثر کودهای آلی و شیمیایی نیتروژنی بر برخی از خصوصیات خاک و گیاه ذرت شیرین رقم گرده افشان 400
محورهای موضوعی : بوم شناسی گیاهان زراعی
معصومه شاهمرادی
1
(
عضو باشگاه پژوهشگران جوان و نخبگان، دانشگاه آزاد اسلامی واحد میانه، میانه، ایران.
)
منوچهر فربودی
2
(
عضو هیأت علمی دانشکده کشاورزی، دانشگاه آزاد اسلامی واحد میانه، میانه، ایران.
)
شهرام شاهرخی
3
(
عضو هیأت علمی دانشکده کشاورزی، دانشگاه آزاد اسلامی واحد میانه، میانه، ایران.
)
کلید واژه: نیتروژن, خصوصیات شیمیایی خاک, ذرت شیرین, کود مرغی,
چکیده مقاله :
به منظور بررسی واکنش خصوصیات خاک و صفات گیاه ذرت شیرین به کاربرد سطوح مختلف کودهای آلی و شیمیایی، پژوهشی گلخانهای- آزمایشگاهی در دانشگاه آزاد اسلامی واحد میانه به صورت فاکتوریل در قالب طرح کاملاً تصادفی با سه تکرار انجام شد. بدین منظور کود مرغی در سه سطح (شاهد، 20 و 30 تن در هکتار) و سه سطح کود نیتروژن (شاهد، 100 و 200 کیلوگرم نیتروژن در هکتار از منبع اوره) جهت انجام آزمایش مورد استفاده قرار گرفت. نتایج به دست آمده نشان داد که کاربرد کود مرغی سبب افزایش معنی دار pH، هدایت الکتریکی، کربن و ماده آلی خاک شد. همچنین اثر آن بر محتوای کلروفیل، ارتفاع و سطح برگ گیاه ذرت شیرین معنی دار بود. تیمار 20 و 30 تن کود مرغی در هکتار نسبت به سایر تیمارها اثر بیشتری بر صفات مورد بررسی نشان داد. با توجه به اینکه اختلاف دو تیمار مذکور در اکثر موارد معنی دار نبود، می توان چنین اظهار داشت که کاربرد 20 تن کود مرغی در هکتار برای رشد مطلوب گیاه ذرت شیرین در خاک گلخانه کافی می باشد. همچنین در صورت استفاده تلفیقی کود نیتروژن و کود مرغی در سامانه زراعی ذرت شیرین، مقدار 100 کیلوگرم در هکتار کود نیتروژنه و 20 تن در هکتار کود مرغی قابل توصیه بود.
In order to study the response of soil properties and sweet corn traits to different levels of organic and chemical fertilizers of nitrogen, a greenhouse-laboratory research was carried out as factorial based on a completely randomized design with three replications in Miyaneh Branch, Islamid Azad University. Experimental factors included poultry manure at three levels (0, 20 and 30 ton.ha-1) and nitrogen fertilizer at three levels (0, 100 and 200 kg.ha-1 from urea source). Results showed that application of poultry manure in soil increased soil pH, EC and organic carbon. Also, it had a significant effect on chlorophyll content, plant height and leaf area of sweet corn plants. Application of 20 and 30 ton.ha-1 poultry manure resulted in higher values of the studied traits. However, there was no significant differences between 20 and 30 ton.ha-1 poultry manure in most cases and so, application of 20 ton.ha-1 poultry manure was enough for achieving optimal sweet corn growth in greenhouse. According to the results, combined application of 20 ton.ha-1 poultry manure and 100 kg.ha-1 nitrogen from urea source could be recommended for optimum nitrogen supplying in sweet corn cropping system.
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