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| ارزیابی پایداری زیستمحیطی نظامهای تولید گیاهان علوفهای در منطقه سیستان با استفاده از تحلیل امرژی: مقایسه کوشیا، ارزن، سورگوم و جو | ||
| دانش کشاورزی وتولید پایدار | ||
| دوره 35، شماره 3، 1404، صفحه 317-332 اصل مقاله (730.04 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22034/saps.2024.60613.3182 | ||
| نویسندگان | ||
| عیسی خمری* 1؛ علیرضا سیروس مهر2؛ محمدرضا اصغری پور3؛ سید ابوالفضل هاشمی4 | ||
| 1گروه زراعت و اصلاح نباتات-دانشکده کشاورزی -دانشگاه زابل -ایران | ||
| 2دانشیار گروه زراعت، دانشکده کشاورزی، دانشگاه زابل، زابل، ایران | ||
| 3استاد گروه زراعت، دانشکده کشاورزی، دانشگاه زابل،زابل، ایران | ||
| 4دانشجوی دکتری آگروتکنولوژی- گرایش فیزیولوژی ، گروه زراعت، دانشگاه زابل | ||
| چکیده | ||
| مقدمه و اهداف: با بهرهگیری از روش تحلیل امرژی، پایداری زیستمحیطی چهار نظام تولید علوفهای شامل کوشیا، ارزن، سورگوم و جو در منطقهی سیستان در سال زراعی 1401-1400 موردبررسی قرار گرفت. هدف از این پژوهش، تعیین نظام تولیدی با بهترین عملکرد از نظر مصرف، بازده و بار امرژی و همچنین شاخص پایداری امرژی بود. مواد و روش: منطقه سیستان دارای آبوهوای خشک و گرمسیری است و با کمبود آبوخاک شور روبرو است. جامعه آماری موردمطالعه شامل مزارع کشت گیاهان علوفهای منطقه بود. برای تبدیل جریانهای انرژی و مواد به واحد امرژی، از ضرایب تبدیل که مسیر تحولات انرژی در جهان را منعکس میکنند، استفاده شد. سپس با محاسبه شاخصهای مربوط به امرژی، پایداری زیستمحیطی و اقتصادی نظامهای تولید گیاهان علوفهای مورد ارزیابی و مقایسه قرار گرفت. یافتهها: مجموع امرژیهای ورودی به نظام برای چهار بومنظام تولید کوشیا، ارزن، سورگوم و جو به ترتیب 1016×82/2، 1016×29/3، 1016×30/4 و 1016×65/3 ام ژول خوشیدی در هکتار در سال بدست آمد. نظام تولید کوشیا به لحاظ شاخص EIR در رتبه نخست قرار گرفت. دلیل این امر، مصرف بیشتر کود نیتروژن در مقایسه با سایر نظامهای موردبررسی است که به ناپایداری این نظام نیز میانجامد. نتیجهگیری: نتایج نشان از پایداری نظامهای تولید ارزن و جو ازلحاظ منافع اقتصادی و زیستمحیطی داشت. با ارتقای الگوهای سازگار با محیطزیست، مانند افزایش حمایت از تولیدکنندگان، ترویج توسعه کشت در مقیاس بزرگ، تدوین معیارهای پایداری و ارائه یارانههای هدفمند به بهبود تولیدات گیاهان علوفهای در منطقه سیستان کمک کرد. | ||
| کلیدواژهها | ||
| دامپروری فشرده؛ شاخص امرژی؛ سیستمهای کشت محصول باارزش بالا؛ عملکرد زیستمحیطی؛ پایداری | ||
| مراجع | ||
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| آمار تعداد مشاهده مقاله: 36 تعداد دریافت فایل اصل مقاله: 21 | ||