نوع مقاله : مقاله پژوهشی
نویسنده
گروه مکانیک بیوسیستم، دانشکده مهندسی زراعی و عمران روستایی، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان، اهواز، ایران
چکیده
با وجود کاهش شدید منابع آبی ایران و رشد روزافزون جمعیت، نیاز به تولید غذا و محصولات کشاورزی بیش از گذشته است. در گذشته، اغلب کاشت گیاهان بهصورت کشت مستقیم بذر صورت میپذیرفت و منابع آبی بسیار خصوصا آبهای زیرزمینی برای کشت مستقیم بذر و جوانهزنی گیاه مصرف میشد. از جمله روشهای کاهش مصرف آب، کود و سموم کشت نشایی بهجای کشت مستقیم بذر است. لذا هدف از پژوهش حاضر مدلسازی دینامیکی و ساخت سامانه کاشت بذر در سینی نشاء در نظر گرفته شد. بدین منظور ابتدا یک بازوی کارنده مدلسازی و موقعیت کارنده در هر لحظه بهدست آمد. سپس براساس مدلسازی دینامیکی بازو ساخته و عملیات کشت بذر در سینی نشاء صورت پذیرفت. ارزیابی سامانه کاشت دو سطح سرعت پیشروی 5 و 10 سانتیمتر بر ثانیه برای بذر چغندرقند انجام گرفت که ظرفیـت نامی این بذرکار بین 3579 تا 4613 سلول در ساعت بود. در ضمن شاخصهای نکاشت و چندگانه کاشت در 3000 سلول نیز بهترتیب 0.03 و 8.17 درصد بهدست آمد. با توجه به دقت کاشت، سرعت عملکرد کارنده و همچنین مصرف اندک انرژی (25.56 واتساعت) این سامانه توانایی جایگزینی بذرکاری دستی در سینی نشاء را دارد.
کلیدواژهها
موضوعات
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