The壤博士recorder is an intelligent handheld detector designed with the latest digital integrated circuit technology and international testing technology. The recorder uses a large-size full-color LCD screen, which can display readings in real time. At the same time, the detection circuit designed by the digital chip of the international manufacturer can achieve very high sensitivity and excellent repeatability. In addition, the recorder integrates storage, recording and analysis, and can be flexibly connected to our company's soil conductivity and soil temperature and humidity equipment, as well as our company's soil nitrogen, phosphorus and potassium storage, to achieve the display and storage of multiple soil parameters.