INFLUENŢA TEHNOLOGIILOR DE CONSERVARE A SOLULUI ASUPRA EROZIUNII HIDRICE

S. STĂNILĂ

Abstract


INFLUENCES OF CONSERVATION TILLAGE SYSTEMS ON WATER EROSION

Water erosion begins with detachment of soil particles from clods and other soil aggregates. The impact of raindrops on the soil is the major cause of soil particle detachment. When the rainfall rate exceeds the soil’s infiltration rate, water begins to run off, flowing downhill and carrying soil particle. Conservation tillage is defined as a tillage system that leaves enough crop residues to adequately protect the soil from erosion throughout the year. Residue protects the soil surface from erosion by absorbing the impact energy of raindrops and reducing soil particle detachment. In growing season, residues protect the soil from sun and wind, reducing water loss through evaporation. In winter, standing residue increases soil moisture by trapping winter snowfall.

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DOI: http://dx.doi.org/10.15835/arspa.v59i3-4.2639



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