Stepping time domain reflection soil available nutrient in-situ rapid measurement system and method

The invention relates to a stepping type time domain reflection soil available nutrient in-situ rapid detection system and method, and belongs to the technical field of soil detection, the system comprises an in-situ multilayer probe device, an information acquisition control box and a client which are connected with one another, the in-situ multilayer probe device is connected with the information acquisition control box, and the client is connected with the in-situ multilayer probe device. The information acquisition control box comprises a signal transceiving processing module, a data acquisition control module, a 4G/5G transmission module and a power supply module which are connected with one another, and the information acquisition control box is connected with the client operating system through the Internet. The in-situ multi-layer probe device is installed, the change difference of the real part and the imaginary part of the soil dielectric constant in the crop growth process is monitored, modeling is