ارزیابی مزرعه ای یک دستگاه خاک ورز کج ساق

نوع مقاله : مقاله پژوهشی

نویسندگان

بخش تحقیقات فنی و مهندسی کشاورزی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی فارس، سازمان تحقیقات، آموزش و ترویج کشاورزی، شیراز ج.ا. ایران

10.22099/iar.2022.40632.1440

چکیده

هدف از انجام تحقیق حاضر، تعیین اثر شکل هندسی خاک­ورز کج­ساق بر نیروی کشش مصرفی و مقاومت ویژه بود. این مطالعه در قالب طرح آماری کرت­های دوبار خرد شده با سه تکرار اجرا شد. کرت اصلی، رطوبت خاک شامل 10-7، 13-10 و 16-13 درصد، کرت فرعی، سرعت پیشروی شامل 5، 7/5 و 10 کیلومتر بر ساعت و کرت فرعی- فرعی، فاصله بین تیغه­ های کج­ساق شامل 12، 16 و 20 سانتی­متر بود. نتایج نشان داد که اثر سرعت پیشروی تراکتور، فاصله بین تیغه­ های کج­ساق و درصد رطوبت خاک در زمان خاک­ورزی بر نیروی کشش مصرفی و مقاومت ویژه موثر هستند. کاهش رطوبت خاک از 16-13 به 10-7 درصد، نیروی کشش مصرفی را 12 درصد افزایش و مقاومت ویژه را 9 درصد کاهش داد. افزایش سرعت پیشروی از 5 به 10 کیلومتر بر ساعت به ترتیب نیروی کشش مصرفی و مقاومت ویژه را 71/8 و 70/7 درصد افزایش داد. فاصله عرضی مناسب بین تیغه­ های خاک­ورز کج­ساق 16 و 20 سانتی­متر تشخیص داده شد. دیگر یافته ­ها نشان داد که شکل هندسی و خصوصیات خاک­ورز کج­ساق، پتانسیل کاهش نیروی کشش مصرفی در سرعت پیشروی زیاد را دارد.

کلیدواژه‌ها


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