Device and method for rapidly detecting nutrient releasing rate of controlled-release fertilizer based on electric conductivity method

The invention belongs to the technical field of a test for detecting the nutrient releasing rate of a controlled-release fertilizer, relates to a device and method for rapidly detecting the nutrient releasing rate of the controlled-release fertilizer based on an electric conductivity method, and particularly relates to a device and method for rapidly detecting the still water dissolution rate and the accumulation releasing rate of the controlled-release fertilizer based on the electric conductivity method. The device comprises a bracket, a water feeding device, a glass container, a digital display electric conductivity instrument, an electronic stirrer, a PCL control system for controlling detection steps and the like. With the adoption of the special device, an uneven concentration distribution phenomenon caused by external temperature fluctuation and long-time standing of a solution to be detected is avoided; and the detected electric conductivity value of a nutrient solution is relatively reliable and accurate, and meanwhile, the operation time is greatly shortened.