| Ridge tillage with furrow irrigation technology possess a significant role of water saving and increasing yield, but lack the theory support for application in spring wheat planting. In this research, adopted two typical soils as silt sandy clay loam and clay, measured the soil water moving
parameters and using the HYDRUS software, have simulated the soil water movement and water redistribute after stop water supply under the different ridge width of trapezoidal furrow; have researched the advancing process of wetting front and wetting body change with water redistribute under different irrigation volume, have analyzed the range of wetting body for suitable plant growth under the design irrigation quota, also have put forward the rational width as 20 to 50 cm and 20 to 35 cm for the silt sandy clay loam and clay soil respectively. This result can be provided the technical support for extending the ridge tillage with furrow irrigation technology of spring wheat in arid areas. |