Water and NO^－₃-N distribution characteristics in single film hole point source fertile solution infiltration

Based on the indoor experiment of single film hole point source fertile solution infiltration, the distribution characteristics of water content and NO^－₃-N concentration in wetted-body were researched. The mathematic models of water content and NO^－₃-N concentration distribution were put forward. Results show that the accuracy of these models is high and the models are consistent with the law of the water content and NO^－₃-N concentration distribution. According to water content and NO^－₃-N concentration distribution models, the relationships among water content, the concentration of NO^－₃-N and radius of wetted-body are ascertained. These researches have laid a foundation for further studyof the influence factors in film hole fertile solution infiltration.