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ارزیابی آبشویی و روند تجزیه علف کش متری بیوزین در چند خاک مختلف | ||
تحقیقات آب و خاک ایران | ||
مقاله 1، دوره 50، شماره 1، فروردین و اردیبهشت 1398، صفحه 1-12 اصل مقاله (811.99 K) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22059/ijswr.2018.203562.667435 | ||
نویسندگان | ||
محمد رضا ریگی1؛ محسن فرحبخش* 2 | ||
1هیئت علمی مجتمع آموزش عالی سراوان، سراوان، ایران | ||
2دانشیار، گروه علوم و مهندسی خاک، دانشکده مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج، ایران | ||
چکیده | ||
مصرف بیرویه و نادرست آفتکشها سبب آلودگی محیط زیست شده است. بررسی سرنوشت علفکشهای مصرفشده در خاک برای به حداقل رساندن تحرک آنها در خاک و کنترل آلودگی آبهای زیرزمینی ضروری میباشد. آبشویی و تجزیه متریبیوزین در سه خاک تحت شرایط آزمایشگاهی بررسی گردید. متریبیوزین در ستونهای خاک با و بدون تیمار زمانی متحرک بود. تحرک علفکش در خاک بستگی به فرایند جذب در همان خاک دارد. نتایج نشان داد که تحرک متریبیوزین در خاکهای 7 و 5 (دارای کربن آلی کمتر) بیش از خاک 1 بود. اختلاف در تمایل جذبی متریبیوزین بر روی خاکهای مختلف به علت تفاوت در خصوصیات خاک مانند مقدار رس، مقدار ماده آلی و میزان pH میباشد. مقادیر نیمهعمر در دامنه 92/37 تا 74/105 روز در شرایط استریل و غیراستریل محاسبه گردید. ترتیب ماندگاری متریبیوزین در خاکهای 1، 5 و 7 میباشد. | ||
کلیدواژهها | ||
"آفت کش"؛ "تریازین"؛ "آبشویی"؛ "تجزیه"؛ "خاک" | ||
مراجع | ||
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