بررسی اثر مصرف تلفیقی کودهای دامی، بیولوژیک و شیمیایی بر تولید کلزا (Brassica napus L.) در شرایط خاک شور استان قم

نوع مقاله : علمی - پژوهشی

نویسندگان

چکیده

کلزا (Brassica napus L.) یکی از مهمترین محصولات زراعی برای تهیه روغن خوراکی در سطح جهان می باشد. به منظور بررسی اثرات سیستم کوددهی تلفیقی (شیمیایی، دامی و بیولوژیک)، بر عملکرد و جذب عناصر غذایی کلزا، آزمایشی در قالب طرح بلوک های کامل تصادفی، در منطقۀ قم انجام پذیرفت. تیمارها شامل :1- شاهد P%100(P 100 %)، 2- P%75B1(P 75% + کود بیولوژیک بارور )، 3- P%75B2 ( P75% + کود بیولوژیک نیتروکسین)، 4- P%75M (P 75% + کود دامی)، 5- P%75B1M (P 75% + کود دامی + کود بیولوژیک بارور2)، 6- P%75B2M (P 75% + کود دامی + کود بیولوژیک نیتروکسین)، 7 -P%100 B1 (P 100% + کود بیولوژیک بارور) و 8 -P%125 B2 (P 125% + کود بیولوژیک نیتروکسین) بودند که در مزرعه ای با خاک و آب شور انجام شد. نتایج نشان داد که بیشترین عملکرد در تیمارهای حاوی کود دامی حاصل گردید. در این تیمارها، کود دامی با کاهش اثرات سمی سدیم و کلر، باعث افزایش جذب فسفر و نیتروژن و در نتیجه عملکرد شد. عملکرد در تیمارهای P%75B1 و P%75B2مشابه شاهد بود که نشان دهنده تأثیر مثبت ولی کم کودهای بیولوژیک در بهبود فسفر قابل دسترس می باشد. در تیمار 125% فسفر شیمیایی + نیتروکسین (P%125B2) عملکرد پایین تر از شاهد بود. با توجه به نتایج به دست آمده به نظر می رسد که در درجه اوّل مصرف تلفیقی کودهای دامی وشیمیایی و در مرتبۀ دوّم مصرف تلفیقی کودهای بیولوژیک و شیمیایی می توانند به عنوان یک راه مؤثرجهت بهبود جذب عناصر پُر مصرف در شرایط خاک شور پیشنهاد گردند.

کلیدواژه‌ها


عنوان مقاله [English]

of integrated application of farmyard manure, plant growth promoting rhizobacteria and chemical fertilizers on production of canola (Brassica napus L.) in saline soil of Qum

نویسندگان [English]

  • H. Sabahi
  • J. Takafooyan
  • A.M. Mahdavi Damghani
  • H. Liyaghati
چکیده [English]

Canola (Brassica napus L.) is one of the most important oil seed crops. In order to evaluate the effects of integrated fertilization (chemical, manure and biofertilizers) on canola (B. napus variety Hyola 401) yield and uptake of mineral nutrients in saline soil and water, a field experiment was conducted in randomized complete blocks (RCBD) arrangement with eight treatments in three replications in Qum Province, Iran. Treatments were: (1) Control, P%100 (Phosphorus %100), (2) P%75B1 (Phosphorus %75+ Barvar biofertilizer), (3) P%75B2 (Phosphorus %75+ Nitroxin biofertilizer), (4) P%75M (Phosphorus %75+ farmyard manure), (5) P%75B1M (Phosphorus %75+ Barvar + Farmyard manure), (6) P%75B2M (Phosphorus %75+ Nitroxin+ Farmyard manure), (7) P%100B1 (Phosphorus %100 + Barvar) and (8) P%125B2 (Phosphorus %125+ Nitroxin). The results showed that the highest yield was obtained from P%75B1M. Difference between integrated fertilization of farmyard manure and other treatments was significant. Farmyard manure increased canola yield which was attributed to increase in availability of mineral nutrients, decreasing effects of salinity and toxic ions. Integrated application of 5 t. ha-1 of farmyard manure and %75 recommended chemical P increased yield and decreased fertilizer consumption. The results revealed that integrated applications of farmyard manure and chemical fertilizer and after that integrated use of bio- and chemical fertilizer are the best strategies to increase nutrient availability and improving canola yield in saline soil.

کلیدواژه‌ها [English]

  • Nitrogen
  • Nitroxin
  • Phosphorus
  • Toxicity of Cl
  • Toxicity of Na
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