بررسی اثر منابع مختلف کودی بر عملکرد علوفه، اسمولیت‌ها، رنگیزه‌های فتوسنتزی و برخی آنزیم‌های آنتی اکسیدانی یونجه در شرایط کم‌آبیاری

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری، گروه زراعت، دانشکده کشاورزی، دانشگاه ارومیه، ارومیه، ایران

2 دانشیار، گروه زراعت، دانشکده کشاورزی، دانشگاه ارومیه، ارومیه، ایران

3 استاد، گروه زراعت، دانشکده کشاورزی، دانشگاه ارومیه، ارومیه، ایران

چکیده

با توجه به نیاز بالای یونجه به آب، تحقیق در مورد نقش انواع کودهای آلی-زیستی و شیمیایی در تعدیل اثر تنش کم آبیاری حائز اهمیت می‌باشد، لذا این آزمایش به صورت فاکتوریل در قالب طرح پایه بلوک‌های کامل تصادفی با سه تکرار در مزرعه تحقیقات کشاورزی و منابع طبیعی خوی در دو سال زراعی (1394 و 1395) انجام شد. تیمارهای آزمایشی شامل آبیاری }آبیاری در حد ظرفیت زراعی (شاهد)، آبیاری در 80 درصد ظرفیت زراعی، آبیاری در60 درصد ظرفیت زراعی{ و منابع مختلف کودی در شش سطح }میکوریزا، نیتروکسین، ورمی‌کمپوست، کود مرغی، کود شیمیایی NPK (توصیه شده بر اساس آزمون خاک) و تیمار بدون مصرف کود (شاهد)} بود. نتایج تجزیه مرکب داده‌ها نشان داد که تیمار آبیاری اثر معنی‌دار بر عملکرد علوفه، کلروفیلa ، b و کلروفیل کل، پرولین، کارتنوئیدها، کربوهیدرات‌های محلول و فعالیت آنزیم پراکسیداز داشت. هم‌چنین نتایج نشان داد که کاربرد کود زیستی میکوریزا در شرایط آبیاری کامل عملکردی معادل کاربرد کود شیمیایی داشت ولی در هر دو شرایط کم آبیاری به طور میانگین منجر به افزایش 18/10 درصدی عملکرد علوفه در مقایسه با تیمار کاربرد کود شیمایی گردید. سایر تیمارهای کودی از نظر تأثیر بر عملکرد علوفه، روند متفاوتی در سطوح مختلف آبیاری نشان دادند بطوری‌که در شرایط آبیاری در 60 درصد ظرفیت زراعی تیمارهای کودی ورمی‌کمپوست، مرغی، شیمیایی و شاهد در یک گروه آماری قرار گرفتند. لذا با توجه به مضرات استفاده از کودهای شیمایی می‌توان کود زیستی میکوریزا را که دارای سودمندی اکولوژیکی و زیست محیطی می‌باشد در زراعت یونجه بکار برد.

کلیدواژه‌ها


عنوان مقاله [English]

Investigating the effect of different fertilizer sources on the yield osmolites, photosynthetic pigments and some antioxidant enzymes of alfalfa under low irrigation condition

نویسندگان [English]

  • Kambiz Kharazmi 1
  • Reza Amirnia 2
  • Jalal Jalilian 2
  • Mehdi Tajbaksh 3
1 Ph.D. Student, Department of Agronomy, Faculty of Agriculture, Urmia University, Urmia, Iran
2 Associate Professor, Department of Agronomy, Faculty of Agriculture, Urmia University, Urmia, Iran
3 Professor, Department of Agronomy, Faculty of Agriculture, Urmia University, Urmia, Iran
چکیده [English]

Due to the high requirement of alfalfa to water, research on the role of organic-biofertilizer and chemical fertilizers in adjustment of low irrigation stress is important, thus, this experiment was conducted as a factorial based on a randomized complete block design with three replications in Agricultural and Natural Resources Research of Khoy in two years (2015-2016). Experimental treatments included irrigation {irrigation at field capacity (control), irrigation at 80% and 60% field capacity} and various fertilizer resources at six level {Mycorrhiza, Nitroxin, Vermicompost, Chicken manure, NPK chemical fertilizer and treatment without fertilizer consumption (control)}. The results of combined analysis showed that irrigation treatment had a significant effect on forage yield, chlorophyll a, b and total chlorophyll, proline, carotenoids, soluble carbohydrates and peroxidase enzyme activity. Regarding the importance of forage production in alfalfa, the results showed that the plant treated with mycorrhiza biofertilizer under full irrigation condition had the similar forage yield as the application of chemical fertilizer, but in both low irrigation conditions, mycorrhiza increase the forage yield by 10.18% in comparison to chemical fertilizer application. Other fertilizer treatments showed different trends in irrigation levels in terms of effect on forage yield, so that under irrigation at 60% field capacity, vermicompost, chicken manure, chemical and control treatments were in a same statistical group. Therefore, considering the disadvantages of using chemical fertilizers, mycorrhiza which has ecological and environmental benefits, can be used in alfalfa cultivation.

کلیدواژه‌ها [English]

  • Chlorophyll
  • Low irrigation
  • Mycorrhiza
  • nitroxin
  • Peroxidase

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