| Aimed at the fact that winter wheat in Guanzhong plain in Shaanxi province was irrigated principally with silty water, and the amount of irrigation was heavy but the utilizing rate of irrigation water was low, the paper, being linked up with the development of drilling and film-mulching wheat cultivation in recent years, analyzed the influence of width of film slit and silt concentration on the infiltration of the silty water via film slit. Moreover, it established the mathematical model being verified by the data of actual measurement. |