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تاثیر منابع مختلف کود آلی بر اشکال پتاسیم و شاخصهای MF و IR در خاکهای متفاوت | ||
| تحقیقات آب و خاک ایران | ||
| دوره 57، شماره 3، خرداد 1405، صفحه 693-709 اصل مقاله (1.15 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ijswr.2026.410987.670100 | ||
| نویسندگان | ||
| فاطمه علیخانی1؛ ساره نظامی* 2 | ||
| 1گروه آموزشی علوم و مهندسی خاک- دانشکده کشاورزی- دانشگاه رازی | ||
| 2گروه علوم و مهندسی خاک، دانشکده کشاورزی،دانشگا رازی، کرمانشاه، ایران | ||
| چکیده | ||
| با توجه به کاهش ماده آلی و پتاسیم قابلدسترس در خاکهای کشور و نقش حیاتی پتاسیم در رشد و عملکرد گیاهان، مطالعهای برای بررسی اثر کودهای آلی بر اشکال پتاسیم در خاکهای متفاوت ضروری به نظر میرسد. بدین منظور در پژوهشی ابتدا شش نوع کود آلی گاوی، مرغی، گوسفندی، کمپوست زباله شهری، ورمیکمپوست و میلورمفرس با سطح 5/1 درصد به دو نمونه خاک با خصوصیات متفاوت اضافه شدند. خاکهای مورد استفاده از محدوده دانشکده کشاورزی دانشگاه رازی و منطقه میاندربند کرمانشاه نمونه-برداری شدند. پس از افزودن کودها به خاک، نمونهها به مدت 60 روز در دمای 25 درجه سلسیوس و رطوبت ظرفیت زراعی در شرایط انکوباسیون قرار گرفتند. در پایان دوره، پتاسیم محلول، تبادلی، غیر تبادلی، ساختمانی، فاکتور تحرک (MF) و شاخص توزیع کاهشیافته (IR) پتاسیم اندازهگیری شدند. نتایج نشان داد که افزودن کودهای آلی مختلف اثر معنیداری بر اشکال پتاسیم و شاخصهای MF و IR در هر دو خاک داشتند. بیشترین مقادیر پتاسیم محلول در تیمار کود مرغی (5/303 mg kg-1) و میلورمفرس (66/296 mg kg-1)، پتاسیم تبادلی در تیمار میلورمفرس (66/1343 mg kg-1)، پتاسیم غیر تبادلی در تیمار کود مرغی (66/2326 mg kg-1) و پتاسیم ساختمانی در تیمار میلورمفرس (7502 mg kg-1) در خاک میاندربند حاصل شدند. بیشترین مقدار فاکتور MF (56/15 درصد) در تیمار میلورمفرس و کمترین مقدار فاکتور IR (79/0) در تیمار مرغی در خاک میاندربند به دست آمد. به طور کلی، بیشترین اثرات مثبت بر اجزاء پتاسیم و فاکتورهای MF و IR به ترتیب در تیمارهای کودی میلورمفرس، مرغی، گوسفندی و گاوی مشاهده شد، در حالی که کمپوست زباله شهری و ورمیکمپوست اثرات کمتری داشتند. انجام مطالعات بیشتر با این کودها در شرایط گلخانه و مزرعه همراه با مطالعات کانیشناسی خاک پیشنهاد میگردد. | ||
| کلیدواژهها | ||
| پتاسیم تبادلی؛ پتاسیم ساختمانی؛ کود مرغی؛ میلورم فرس؛ ورمی کمپوست | ||
| عنوان مقاله [English] | ||
| The Effects of Different Organic Fertilizer Sources on Potassium Forms and MF and IR Indices in Different Soils | ||
| نویسندگان [English] | ||
| Fatemeh Alikhani1؛ Sareh Nezami2 | ||
| 1College of Agriculture, Soil Science Department. Razi University | ||
| 2Soil Science and Engineering department, College of Agriculture, Razi University, Kermanshah, Iran | ||
| چکیده [English] | ||
| Considering the decline of organic matter and available potassium in the soils of the country, as well as the vital role of potassium in plant growth and productivity, a study to investigate the effects of organic fertilizers on potassium forms in different soils was deemed necessary. For this purpose, six types of organic fertilizers, including cattle manure, poultry manure, sheep manure, municipal waste compost, vermicompost, and mealworm frass, were applied at a rate of 1.5% to two soil samples with different characteristics. The soils were collected from the Agricultural Campus of Razi University and the Miandarband region of Kermanshah. After the addition of fertilizers, the samples were incubated for 60 days at 25°C and field capacity moisture conditions. At the end of the incubation period, soluble, exchangeable, non-exchangeable, and structural potassium, as well as the mobility factor (MF) and reduced partition index (IR) of potassium, were determined. The results showed that the application of different organic fertilizers had significant effects on potassium forms and the MF and IR indices in both soils. The highest values of soluble potassium in the poultry manure (303.5 mg kg⁻¹) and mealworm frass treatment (296.66 mg kg⁻¹), exchangeable potassium in the mealworm frass treatment (1343.66 mg kg⁻¹), non-exchangeable potassium in the poultry manure treatment (2326.66 mg kg⁻¹), and structural potassium content in the mealworm frass treatment (7502 mg kg⁻¹) were found in the Miandarband soil. The highest MF value (15.56%) was observed in the mealworm frass treatment, whereas the lowest IR value (0.79) was recorded in the poultry manure treatment in the Miandarband soil. Overall, the greatest positive effects on potassium fractions and the MF and IR indices were observed in the treatments of mealworm frass, poultry manure, sheep manure, and cattle manure, respectively, whereas municipal waste compost and vermicompost had lower effects. Further studies under greenhouse and field conditions, along with soil mineralogical investigations, are recommended for these fertilizers. | ||
| کلیدواژهها [English] | ||
| Chicken manure, exchangeable potassium, mealworm frass, structural potassium, Vermicompost | ||
| مراجع | ||
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