بررسی افزایش وزن و برخی شاخص‌های رشد کرم خاکی در ورمی کمپوست حاصل از کودهای آلی مختلف

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشجوی دکترای آگرواکولوژی دانشگاه زابل

2 دانشیار دانشکده کشاورزی و منابع طبیعی دانشگاه گنبدکاووس

3 استادیار دانشکده کشاورزی دانشگاه گنبدکاووس

4 استادیار مرکز تحقیقات پنبه ورامین

چکیده

تهیه ورمی کمپوست یکی از مهمترین ابزارها برای بازیافت کودهای آلی و تبدیل آن‌ها به کود بیولوژیک است. بررسی مورد نظر در جهت تعیین بهترین بستر جهت پرورش کرم خاکی گونه آیزینا فتیدا (Eisenia .foetida) در یک طرح کاملاً تصادفی در10 تیمار و چهار تکرار در یک دوره سه ماهه در بسترهای مختلف کود دامی اسبی و گوسفندی به همراه بقایای کاه گندم و یونجه در نسبت‌های حجمی مختلف (25، 50، 75 و 100) در سال 1392 در دانشگاه گنبد کاووس انجام شد (تیمارهای کودی گنگ است نسبت­ها ذکر نشده است). در این تحقیق وزن کرم بالغ، جوان، نوزاد، وزن کوکون و وزن نهایی کرم خاکی آیزنیا فتیدا و نرخ رشد وزنی، نرخ رشد ویژه تعداد نوزاد به ازای مولد و نرخ بازماندگی مورد بررسی قرار گرفت. نتایج حاصل از بررسی تجزیه واریانس نشان داد که بین تیمارها از نظر افزایش وزن کرم بالغ، جوان، نوزاد و وزن کرم نهایی و شاخص‌های رشد غیر از نرخ بازماندگی اختلاف معنی­دار وجود داشت. بیشترین وزن کرم بالغ در تیمار کود گوسفندی و بقایای یونجه به نسبت 50 به 50 (نسبت حجمی) مشاهده گردید و بیشترین وزن کرم جوان در تیمار کاه به همراه کود گوسفندی به نسبت 25 به 75 حاصل شد. همچنین بیشترین وزن نوزاد کرم و وزن نهایی کرم‌ها در تیمار کاه به همراه کود گوسفندی به نسبت یک به یک به دست آمد. در مجموع نتایج حاصل نشان داد که تیمار کود گوسفندی به همراه بقایای کاه و یونجه بیشترین افزایش وزن کرم خاکی را به دنبال داشت. 

کلیدواژه‌ها


عنوان مقاله [English]

The study of weight and growth indices of earthworm (Eisenia foetida) in vermicomposting of different organic fertilizers

نویسندگان [English]

  • M. O. omara 1
  • A. byibani 2
  • A. Golezidi 3
  • M. A. vafie tabir 4
1 Student Phd the Agro ecology, Faculty of Agriculture and Natural Resources, University Zabol
2 Associate Professor., Department. of Agronomy, Faculty of Agriculture and Natural Resources, University Gonbad Kavous
3 Assistant Professor., Department. of Agronomy, Faculty of Agriculture and Natural Resources, University of Kavos Gonbad
4 Member of faculty of Agricultural Research Center of Tehran Province, Varamin Cotton Research Centre
چکیده [English]

Vermicompost technology is one of the most important tools for processing and converting organic wastes into biological fertilizers. The study intended to determine the best substrate for breeding earthworm species Eisenia foetida in a completely randomized design with 10 treatments and four replications in a three-month period. Various substrates along with the remains of organic wheat straw and alfalfa in different ratios (25, 50, 75 and 100) were investigated in Year 2013 at the University of Gonbad-e Kavous. In this study, some characteristics of worms such as weight of adult worms, young, newborn, cocoon weight and final weight of earthworms, E. foetida, and growth rate, specific growth rate of the number of babies per generation and survival rates were studied. The results of analysis of variance showed that there were statistically significant differences among all studied treatments from gain weight of adult worms, young, newborn and growth indices point of view except in survival rates. The most weight gained with adult worms was found in the 1:1 ratio of sheep manure along with alfalfa residues. However the greatest weight in young worms were obtained from sheep manure with straw treated in the ratio of 1:3. The maximum weight of the baby worm and final weight were obtained from the worms in the straw mixed with sheep manure in the ratio of 1:1. The results also showed that treatment of sheep manure with straw and alfalfa wastes had the greatest increase in worm weight. 

کلیدواژه‌ها [English]

  • Growth index
  • worm cocoon
  • final worm weight
  • different organic fertilizers
  • Vermicompost
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