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تحلیل سودآوری کشت ذرت دانهای تحت آب شور و کمآبیاری در سیستم آبیاری قطرهای نواری در استان فارس | ||
| تحقیقات آب و خاک ایران | ||
| دوره 57، شماره 4، تیر 1405، صفحه 907-927 اصل مقاله (1.31 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ijswr.2026.409748.670085 | ||
| نویسندگان | ||
| محبوبه لرمحمدحسنی1؛ رضوان طالب نژاد* 2؛ مسعود نوشادی2 | ||
| 1بخش مهندسی آب، دانشکده کشاورزی، دانشگاه شیراز، شیراز، ایران | ||
| 2بخش مهندسی آب، دانشکده کشاورزی، دانشگاه شیراز، شیراز، ایران | ||
| چکیده | ||
| بهمنظور ارزیابی محصول اقتصادی و بهرهوری اقتصادی کشت ذرت دانهای در شرایط کمآبیاری و شوری آب آبیاری پژوهشی در مزرعه تحقیقاتی بخش مهندسی آب دانشکده کشاورزی در سال زراعی 1398 انجام شد. جهت انجام پژوهش آزمایش فاکتوریل در قالب طرح بلوکهای کامل تصادفی در سه تکرار به اجرا در آمد، چهار سطح شوری آب آبیاری شامل شاهد (6/0)، 2، 5/3 و 5 دسی-زیمنس بر متر و تیمار آب آبیاری در سه سطح آبیاری کامل، 75 درصد آبیاری کامل و 50 درصد آبیاری اعمال گردید. نتایج نشان داد که حداکثر مقدار شاخص سطح برگ (82/5) و محصول دانه (53/9 مگاگرم در هکتار) در تیمار آبیاری کامل با شوری آب آبیاری 6/0 دسیزیمنس بر متر حاصل شد. بر اساس نتایج حاصل از تحلیل اقتصادی بیشترین مقدار نسبت سود به هزینه ذرت 64/2 در آبیاری کامل و شوری آب آبیاری6/0 دسیزیمنس بر متر حاصل شد. بر اساس نتایج تحلیل اقتصادی در تیمار آبیاری کامل و 75 درصد آبیاری کامل در سطوح شوری آب آبیاری 6/0 و 2 دسیزیمنس بر متر نسبت سود به هزینه بیشتر از یک و بهرهوری اقتصادی آب نیز عدد مثبتی حاصل شد. به طوریکه، بهرهوری اقتصادی آب در آبیاری کامل در سطوح شوری آب آبیاری 6/0 و 2 دسیزیمنس بر متر به ترتیب 064/0 و 012/0 دلار بر متر مکعب و در 75 درصد آبیاری کامل به ترتیب 044/0 و 012/0 دلار بر متر مکعب حاصل شد. بنابراین این تیمارها توجیه اقتصادی دارند. در حالی که در تیمار 50 درصد آبیاری کامل در همه سطوح شوری آب آبیاری نسبت سود به هزینه کمتر از یک و بهرهوری اقتصادی آب عدد منفی بدست آمد. بنابراین افزایش شوری آب آبیاری تا 2 دسیزیمنس بر متر در آبیاری کامل و 75 درصد آبیاری کامل در کشت ذرت دانهای در منطقه مورد مطالعه توجیه اقتصادی دارد. | ||
| کلیدواژهها | ||
| آب نامتعارف؛ بهرهوری اقتصادی آب؛ کمبود آب؛ نسبت منفعت به هزینه | ||
| مراجع | ||
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آمار تعداد مشاهده مقاله: 65 تعداد دریافت فایل اصل مقاله: 54 |
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