عنوان مقاله [English]
Soil erosion is an important development problem in arid and semi-arid which has in long time has negative impact on soil fertilize, product reduce and lose soil. Luck suitable production from natural resources causes destroyed ecosystem, change hydrology cycle and soil erosion. Therefore, identification and efficient appropriate methods of soil and water conservation provide sustainable operation from available resources. This reaearch do in north of Sistan and aim was idintyfy effect of sand on increased moisture in the root zone using two methods of irrigation.Three soil samples were collected from 0- 50 cm depth for this study and characteristic analyzed including: pH, EC, C, Ca, K, P, Mg, Na, ESP, available phosphor and texture.This research had 8 treatments including: plant (Mulberry and Olive), soil (sand and witness) and Irrigation (drip surface and subsurface) which has done to split split- plot in for 4 repeat durig tow years. After plating a 20 cm layer of sand was poured with and in each pit on the surface. In this experiment, soil moisture was measured monthly and plant growth (high, vegetation cover, diameter and branch) measured in session growth. Data average analyzed with software MSTAT. Result shows that the amount of moisture, high, vegetation cover, diameter and brench number in the sand treatment increases 28 persentage to the others treatments. According to the findings and statistical analysis there was a significant difference between the sand and other treatments (in 0.01 levels). Statistical analysis on the class methods used for moisture shows that the sand along with subsurface and other three other treatment in B class. Conclusion, sand causes decreases capillary the influence and reduces transpiration and as a result, Increases moisture in the root zone of the plant.