التقدير الحقلي لغيض الماء التراكمي و الإيصالية المائية باستعمال المغياض القرصي الصغير (MDI)‎ لتربة صحراوية مستزرعة بنباتات مختلفة

الملخص EN

A field Experiment was conducted on a desert soil at Al-Ubaidy Oasis-Al-Qaem west of Iraq to measure accumulative infiltration and hydraulic conductivity by Mini Disk Infiltrometer.

The soil was cultivated with different plants (eucalyptus, olive tree and atriplex shrubs) at different ages (3-10 y) planted at different position from the slop (summit, middle, down and leveled).

The experiment was factorial in CRD with four replicates.

The results showed significant deference in value of cumulative infiltration and hydraulic conductivity for the vegetation type.

Which were higher in the soil of eucalyptus by 96.03% and 85.71%, respectively, compared with olive.

There were significant differences in value of cumulative infiltration and water conductivity in the soil under the young vegetation show by 27.98% and 23.88%, respectively compared with soil under the old vegetation.

Those differences are also found in the case of interaction among vegetation type, age, and position of the slope.

Cumulative infiltration and hydraulic conductivity, with the highest value appeared on new eucalyptus in the middle of the slope at difference 1334% (approximately 14 times) and 1546% (16 times), respectively, compared with the lowest value in the modern Olive on top of slope position.

Those differences are not found between different slope positions