Abstract: A testing device for integrated irrigation and disinfection includes a centrifugal pump, pressure sensors, flow sensors, an ion concentration sensor, and a control system. The testing device has comprehensive functions of fertilization, spray and drip irrigation load simulation, water and fertilizer parameter detection, fertilizer absorbing channel parameter detection and backflow channel parameter detection. The detection of nutrient ion concentration in a nutrient solution is combined with the aspects of irrigation, dynamic preparation of a nutrient solution and disinfection of a nutrient solution, to realize a high-precision dynamic preparation of a nutrient solution and irrigation area load simulation, and satisfy the requirements on a test system during a research and development process of an irrigation and fertilization system.

Abstract: A portable device for detecting the nutrition level of a plant includes an outer casing and a detection circuit. The outer casing includes belt pulleys, a cam, upper and lower clamping plates. The detection circuit is arranged in the outer casing and realizes an electric signal processing function and a display function. The portable device for detecting the nutrition level of the plant has the following beneficial effects: the device can be used for analyzing whether nutrient elements in crops are deficient or excessive, which is taken as the basis for accurate fertilization, and the device has low detection cost, high real-time capability, small size and is portable.

Abstract: A portable device for detecting the nutrition level of a plant includes an outer casing and a detection circuit. The outer casing includes belt pulleys, a cam, upper and lower clamping plates. The detection circuit is arranged in the outer casing and realizes an electric signal processing function and a display function. The portable device for detecting the nutrition level of the plant has the following beneficial effects: the device can be used for analyzing whether nutrient elements in crops are deficient or excessive, which is taken as the basis for accurate fertilization, and the device has low detection cost, high real-time capability, small size and is portable.

Abstract: A testing device for integrated irrigation and disinfection includes a centrifugal pump, pressure sensors, flow sensors, an ion concentration sensor, and a control system. The testing device has comprehensive functions of fertilization, spray and drip irrigation load simulation, water and fertilizer parameter detection, fertilizer absorbing channel parameter detection and backflow channel parameter detection. The detection of nutrient ion concentration in a nutrient solution is combined with the aspects of irrigation, dynamic preparation of a nutrient solution and disinfection of a nutrient solution, to realize a high-precision dynamic preparation of a nutrient solution and irrigation area load simulation, and satisfy the requirements on a test system during a research and development process of an irrigation and fertilization system.