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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" | ||
عنوان مقاله [English] | ||
Evaluation of leaching and degradation rate of metribuzin herbicide in different soils | ||
نویسندگان [English] | ||
Mohammad Reza Rigi1؛ Mohsen Farahbakhsh2 | ||
1Assistant professor of Higher Educational Complex of Saravan, Saravan, Iran | ||
2Associate Professor, Department of Soil Science, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran | ||
چکیده [English] | ||
The intensive and inappropriate use of pesticides caused environment to be contaminated. Quantifying the fate of applied herbicides in the soil is essential for minimizing their mobility in the soil and environmental pollution. The leaching and degradation of the metribuzin herbicide in three soils were investigated under laboratory conditions. Metribuzin was mobile in the soils when tested using non-aged and aged soil columns. The mobility of herbicide in the soil is related to the adsorption phenomenon in the same soil. It was found that the mobility of metribuzin in the soils 7 and 5 (with less organic carbon) was more than the one in the soil 1. The difference in the adsorption affinity of metribuzin in different soils appears to be due to differences in soil properties, such as clay content, organic matter content and pH value. The calculated half-life values in sterile and non-sterile conditions ranged from 37.92 to 105.74 days. Metribuzin persistent in the soil was corresponded to columns 1, 5 and 7 respectively. | ||
کلیدواژهها [English] | ||
"Pesticide", "Triazine", "Leaching", "Degradation", "Soil" | ||
مراجع | ||
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