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علوم خاک soil-science - ثبات خاک : soil consistence
علوم خاک soil-science
پیش به سوی کشاورزی پایدار با نگرش صحیح به خاک

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ثبات خاک : soil consistence

ثبات خاک : soil consistence

مقاومت خاک در مقابل گسیختگی و تغییر شکل ثبات نامیده می شود. نیروهای پیوستگی و همبستگی موجود در کل توده خاک مبین ثبات خاک است. بنابراین بر خلاف ساختمان که در مورد شکل و اندازه و درجه وضوح خاکدانه صحبت می کند ثبات خاک حکایت از نوع و میزان نیروهای موجود بین ذرات خاک می نماید. ثبات خاک دررابطه با اعمال کشت و زرع و عبور و مرور وسایل نقلیه حائز اهمیت فراوانی است. ثبات خاک در 3 حالت مختلف رطوبت تعریف گردیده است :
حالت خیس (wet) مرطوب (moist) و خشک (Dry) پایداری خاک در حالت مرطوب در 3 حالت تشریح می شود.
A) پایداری درحالت تر : مقدار رطوبت بیشتر یا کمی بیشتر از حد ظرفیت زراعی است
B) پایداری در حالت مرطوب : رطوبت بین خشکی و حد ظرفیت زراعی است
C ) پایداری در حالت خشک
 

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