اثر محلول‌پاشی عناصر غذایی بر خصوصیات مورفوفیزیولوژیک کرچک (Ricinus communis L.) در سطوح مختلف کم‌آبیاری

نوع مقاله : علمی پژوهشی

نویسندگان

1 دانشجوی دکتری زراعت، گروه زراعت و اصلاح نباتات، دانشکده کشاورزی، واحد مهاباد، دانشگاه آزاد اسلامی، مهاباد، ایران

2 استادیار گروه زراعت و اصلاح نباتات، واحد مهاباد، دانشگاه آزاد اسلامی، مهاباد، ایران

3 دانشیار بخش تحقیقات علوم زراعی و باغی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان آذربایجان شرقی، سازمان تحقیقات، آموزش و ترویج کشاورزی، تبریز، ایران

10.30495/jcep.2021.679977

چکیده

به‌منظور بررسی اثر دور آبیاری و محلول‌پاشی کودهای شیمیایی بر برخی از صفات مورفوفیزیولوژیک کرچک، از طریق اجرای آزمایشی در مرکز تحقیقات و آموزش کشاورزی آذربایجان­شرقی، به‌صورت کرت‌های خرد شده در قالب بلوک‌های کامل تصادفی در دو سال زراعی 97-1396 بررسی شد. فاکتور اول سطوح آبیاری در این بررسی شامل آبیاری نرمال، آبیاری پس از ۸۰ و 140 میلی­متر تبخیر در کرت اصلی و هشت تیمار کودی شامل گوگرد، پتاسیم، نیتروژن، گوگرد + پتاسیم، گوگرد + نیتروژن، پتاسیم + نیتروژن، گوگرد + پتاسیم+ نیتروژن و شاهد به‌صورت محلول‌پاشی در کرت‌های فرعی بودند. نتایج نشان داد اثر دور آبیاری و محلول­پاشی بر کلیه صفات مورد بررسی معنی­دار بود. اثر متقابل دو تیمار بر کلیه صفات، به غیر از شاخص کلروفیل، معنی­دار گردید. در این بررسی دور آبیاری بعد از 140 میلی­متر تبخیر شاخص کلروفیل را نسبت به شرایط نرمال افزایش داد. همچنین محلول­پاشی S+N+K مقدار صفت مذکور را در مقایسه با تیمار شاهد به میزان 90/14 درصد بالا برد. بالاترین ارتفاع بوته، تعداد برگ، ضریب هدایت روزنه­ای، تعداد شاخه فرعی، عملکرد زیست توده و عملکرد دانه (45/0 کیلوگرم در هکتار) و کمترین محتوی پرولین برگ به تیمار محلول­پاشی S+N+K در شرایط آبیاری نرمال اختصاص یافتند، محلول­پاشی S+N+K توانست عملکرد دانه را در مقایسه با تیمار شاهد محلول­پاشی در دور آبیاری بعد از 80 و 140 میلی­متر به­ترتیب 83/45 و 0/40 درصد افزایش دهد و اثر تنش کم­آبی را بر صفات مورد مطالعه تعدیل نماید.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of Foliar Nutrient Application on Morphophysiological Characteristics of Castor (Ricinus communis L.) at Different Levels of Water Deficit

نویسندگان [English]

  • Fardane Osati 1
  • Toraj Mir Mahmoodi 2
  • Bahman Pasban Eslam 3
  • Saman Yazdan Seta 2
  • Hasan monirifar 3
1 Ph.D. Student, Department of Agriculture, Tabriz Branch, Islamic Azad University, Mahabad, Iran
2 Assistant Professor Department of Agronomy and Plant Breeding, Mahabad Branch, Islamic Azad University, Mahabad, Iran
3 Associate Professor of Crop and Horticultural Science Research Department, East Azerbaijan Agricultural and Natural Resources Research and Education Center, AREEO, Tabriz, Iran
چکیده [English]

To study the effect of irrigation levels and spraying of chemical fertilizers on some Morphophysiological traits in castor oil plant an experiment was conducted in East Azarbaijan Agricultural Research and Education Center, Tabriz- Iran at the 2017 crop season. The field experiment was carried out by a split-plot design based on a completely randomized block design with three replications. The first factor was irrigation levels consisting of control (normal irrigation), irrigation after 80 mm and 140 mm evaporation from the pan evaporation in asseinged to main plots and eight spraying chemical fertilizers including sulfur, potassium, nitrogen, sulfur + potassium, sulfur + nitrogen, potassium + nitrogen, sulfur + potassium + nitrogen and control to subplots.The results showed that the effects of irrigation levels and chemical fertilizer treatments on all traits were significant furthermore, the interaction of two treatments were also significant on all traits except chlorophyll index. Irrigation interval after 140 mm evaporation reduced the leaf chlorophyll index by 18.25% compared to normal conditions. Also, spraying S + N + K increased this trait by 14.90% compared to the control treatment. The highest plant height (135.15 cm), number of leaves (25.12), stomatal conductance coefficient (276.55 Mmol.m2sec), number of branches (7.25), biomass (1.60 kg.m2) and grain yield (0.45 kg.ha-1) and the lowest proline content (0.19μmol.g-1) were recorded by spraying plants with S + N + K under normal irrigation condition. Spraying plants with S+N +K under irrigation interval after 80 and 140 mm also increase grain yields by 45.83 and 40.0 percent respectively, compared with control treatment and it was able to modify the effect of water deficit on traits under study.

کلیدواژه‌ها [English]

  • Chlorophyll
  • Water deficit
  • sulfur
  • nitrogen
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