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علوم خاک soil-science - اصلاح خاک های آهکی از نقطه نظر کاهش PH
علوم خاک soil-science
پیش به سوی کشاورزی پایدار با نگرش صحیح به خاک

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اصلاح خاک های آهکی از نقطه نظر کاهش PH

اصلاح خاک های آهکی از نقطه نظر کاهش PH:

همانطور که می دانیم جذب تعداد زیادی از عناصر معدنی در خاک های آهکی به کندی انجام می گیرد در بین این عناصر می توان آهن، فسفر ، روی، کبالت ، پتاس و غیره را نام برد. در خاک های آهکی ایران مسئله کمبود و عناصر کمیاب در حقیقت مطرح نیست زیرا این عناصر در خاک هستند و حتی به مقدار زیاد ولی به علت وجود آهک و یون کلسیم فراوان، جذب عناصر کم مصرف با مشکلات فراوان انجام می گیرد. برای اصلاح و بهبود خاک های آهکی روش و متدهای زیادی وجود ندارد.
خاک های آهکی بی اندازه از مواد آلی فقیر هستند و یکی از نقایص این خاکها کمبود مواد آلی و هوموس هستند. از طرف دیگر با اضافه نمودن مواد آلی می توان از نقش مضر آهک جلوگیری نمود. روش دیگر عبارت خواهد بود از اضافه کردن کودهای شیمیایی اسیدی کننده خاک، تعداد این کودها کم و تأثیر آنها کند می باشد. در بین آنها می توان سولفات آمونیوم را نام برد.
 

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