دراسة تأثير نمط الزراعة (حافظة-تقليدية)‎ و إدارة مخلفات المحاصيل في الانجراف المائي للتربة في ظروف العواصف المطرية الطبيعية

الملخص EN

The study aimed to determine the impact of agricultural system on soil water erosion in the natural rain conditions.

The experiment was carried out in the city of Hammam Wassel using clay soil texture during 2013/2014 season, where annual precipitation rate ranges between 950-1400 mm.

Two agricultural systems were studied: The first system was zero-tillage and the residue of wheat crop left by 50%andthesecond one was the traditional farming system.

The impact of agricultural system on the mechanical composition of the drifted soil samples, the amount of soil lost and the run off percentage were studied .Results showed that the drifted soil samples contained a low percentage of sand and high proportion of finegrained silt and clay, and high proportion of organic matter (8.1%), in conventional agriculture system.

The use of zero tillage and crop residues left by50% led to reduce the amount of soil lost at a rate of 67% (0.18 t/ha/y vs.0.55 t/ha/y).

It also contributed to reduce the amount of run off by 72% while this value amounted to 20.45% in the conventional farming system.