شناسایی عوامل محدودکنندة عملکرد کلزا با استفاده از روش تحلیل مقایسۀ کارکرد

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی‌ارشد، گروه تولیدات گیاهی، دانشکده کشاورزی و منابع طبیعی، دانشگاه گنبد کاووس، گنبد کاووس، ایران

2 استادیار، گروه تولیدات گیاهی، دانشکده کشاورزی و منابع طبیعی، دانشگاه گنبد کاووس، گنبد کاووس، ایران

چکیده

درک پتانسیل عملکرد و فاصله موجود بین عملکرد واقعی گیاهان زراعی با عملکرد قابل دستیابی برای تشخیص عوامل محدودکننده عملکرد ضروری است. برای شناخت محدودیت‌های مدیریتی تولید در گیاه کلزا، بررسی‌هایی در سال‌ زراعی 96-1395 در 50 مزرعه انجام شد. این مطالعه در دهستان زاوکوه شهرستان کلاله که یکی از مناطق اصلی کشت کلزا در استان گلستان است، صورت گرفت. همه داده‌های مدیریتی مزارع پس از ثبت با استفاده از رگرسیون گام به گام و روشCPA مورد تجزیه و تحلیل قرار گرفتند. با استفاده از مدل تولید و مقادیر پارامترهای مدل سهم هر یک از محدودیت‌ها در ایجاد خلاء عملکرد مشخص شدند. میزان خلاء عملکرد بر پایه اختلاف بین عملکرد قابل دستیابی و عملکرد میانگین کشاورزان در منطقه به دست آمد. نتایج نشان داد بین متوسط عملکرد واقعی (2308 کیلوگرم در هکتار) و عملکرد قابل حصول (4123 کیلوگرم در هکتار)، 1818 کیلوگرم در هکتار خلا وجود دارد. مهم‌ترین فاکتورهای خلا عملکرد برای منطقه مورد مطالعه شامل مساحت مزرعه تحت مدیریت کشاورز با 4/21 درصد، عدم شخم تابستانه با 15 درصد، زمان تهیه زمین و شخم با 7/14 درصد، عدم مصرف بهینه کود نیتروژن 6/14 درصد، عدم مصرف بهینه کود پتاسیم با 14درصد، تراکم علف‌های هرز در واحد سطح 8/10 درصد، ضد عفونی بذر با حشره‌کش‌ها 1/8 درصد و زیر شکن با 4/1 درصد می‌باشد.

کلیدواژه‌ها


عنوان مقاله [English]

Identification of Rapeseed Limiting Factors Using Performance Comparison Analysis

نویسندگان [English]

  • Shahram SekhavatiFar 1
  • ali Rahemi karizaki 2
  • Ali Nakhzari Moghaddam 2
  • Mehdi Mollashahi 2
1 M.Sc. Student, Plant Production Department, College of Agriculture and Natural Resources, Gonbad Kavous University, Gonbad Kavous, Iran
2 Assistant Professor, Plant Production Department, College of Agriculture and Natural Resources, Gonbad Kavous University, Gonbad Kavous, Iran
چکیده [English]

Understanding the performance potential and the gap between the actual yields of crops with the achievable function is necessary to diagnose the limiting factors of performance. The present study was conducted based on the method of CPA in 50 fields of Zavkooh villi (Kalaleh, Golestan, Iran) in 2016 and 2017. In this study all information related to management practices, soil characteristics and farmer socio- economic status were measured and recorded. In the comparative performance analysis (CPA) method, using stepwise regression, the relationship between variables and yield was considered. And yield gap rate, its causes factors and it was also estimated the contribution of each of these factors to the creation of a yield gap. The results showed that between the average real yield (2308 kg ha-1) and the yieldable yield (4123 kg ha-1), there is 1818 kg per hectare of vacuum. Accordingly, the most important factors in yield gap for the region included: field size with 21.4 percent, Summer plowing with 15 percent, The time of land preparation and plowing with 14.7 percent, nitrogen fertilizer with 14.6 percent, potassium fertilizer with 14 percent, weeds density per unit area with 10.8 percent), seed treatment with 8.1 percent and Subsoiler with 1.4 percent.

کلیدواژه‌ها [English]

  • Actual yield
  • attainable yield
  • crop management
  • rapeseed
  • Yield Gap
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