اثر استخدام كربوكسي ميثيل سيللوز علي الارتشاح و الانجراف من ثلاث ترب مختلفة تحت ظروف المطر الصناعي

Using a laboratory rainfall simulator, this research studies the effects of surface application of three levels(10,20,40,kg/h) of (KMC) to three types of soil: clay, sandy clay loams, and salty loams, on the stability of soil structure, seal formation and soil erosion by exposure to (34mm) of simulated rainfall. After incubating these types of soil with polymer at laboratory temperature for a week. The mean weight diameter was used as an indicator of structure stability; the infiltration rate was used as an indicator of soil surface sealing, while the weight of the lost soil by runoff was used as an indicator of measuring soil erosion. The results showed that surface application of polymer to three types of soil significantly increased resistance to seal formation, stability of soil structure, and the rate of final infiltration. In contrast, there was a significant decrease in runoff and in the quantity of eroded soil (77% in the first,72% in the second, and 79% in the third compared to the control. The (20kg/h) treatment gave the best effects in the three types of soil .