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برهمکنش آرسنیک و فسفر بر جذب کلسیم، منیزیم و پتاسیم توسط گندم (Triticum aestivum) و گل جعفری (Tagestes erecta) | ||
تحقیقات کاربردی خاک | ||
مقاله 4، دوره 2، شماره 1، مرداد 1393، صفحه 43-58 اصل مقاله (590.25 K) | ||
نوع مقاله: مقاله پژوهشی | ||
نویسندگان | ||
نسرین میرزایی1؛ عادل ریحانی تبار* 2؛ شاهین اوستان2؛ مهدیه حقیقت افشار3 | ||
1دانشجوی سابق کارشناسی ارشد گروه علوم خاک، دانشکده کشاورزی، دانشگاه تبریز | ||
2دانشیار گروه علوم خاک، دانشکده کشاورزی، دانشگاه تبریز | ||
3استادیار گروه باغبانی، دانشگاه آزاد تبریز | ||
چکیده | ||
نگرانیهایی در خصوص آلودگی منابع خاک و آب به آرسنیک (As) و خطر بالقوه آن برای سلامتی انسانها و محیطزیست وجود دارد. گندم و گل جعفری به ترتیب به عنوان یکی از مهمترین گیاهان زراعی و زینتی هستند که در گیاهپالایی خاکهای آلوده هم مورد استفاده قرار میگیرند. برای مطالعه اثر برهمکنش آرسنیک و فسفر(P) بر غلظت و جذب کلسیم (Ca)، منیزیم (Mg) و پتاسیم (K)، در گندم و گل جعفری، دو آزمایش فاکتوریل در قالب طرح بلوکهای کامل تصادفی با سه سطح آرسنیک (0، 50 و 100 میلی گرم بر کیلوگرم) و سه سطح فسفر (صفر، 20 و 40 میلی گرم بر کیلوگرم) و در سه تکرار در گلخانه انجام شد. نتایج نشان داد که با حضور As جذب عناصر کلسیم، منیزیم و پتاسیم در اندام های هوایی و ریشه گندم و گل جعفری، کاهش یافت. با افزایش سطوح فسفر، جذب کلسیم در ریشه گل جعفری و جذب منیزیم و پتاسیم در اندامهای هوایی و ریشه گندم و گل جعفری افزایش یافت. همچنین برهمکنش آرسنیک و فسفر در اکثر ویژگیهای اندازهگیری شده گیاهان معنیدار بود و مصرف فسفر توانست تا حدودی اثر منفی آرسنیک را تعدیل کند. | ||
کلیدواژهها | ||
آرسنیک؛ برهمکنش؛ پتاسیم؛ فسفر؛ کلسیم؛ گندم؛ گل جعفری | ||
مراجع | ||
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