Abstract: Deep percolation of irrigation water and fertilizers is a common phenomenon in sandy soils. It seriously reduces the amounts of water and fertilizers available to crops. In order to solve this problem, We place an impervious asphalt layer at a depth of 50 cm in the newly-broken sandy soil.Experimental results showed that the amount of irrigated water in the barried plots saved 54.8-66.0%. The leaching loss of available nitrogen in the cultivate d horizon reduced, but the average yields of soybean and bean increased as compared with the control plot.