This project mainly studies the application information of agricultural non-point source pollution prevention and control technology. Collate international experience and propose domestically applicable green prevention and control technology promotion practices, and promote green prevention and control technology for agricultural non-point source pollution control from top to bottom, echoing the spirit of "Farm to Fork". Conduct field experiments on agricultural non-point source pollution control by cooperating with farmers to apply biochar and biological inoculants respectively in tea and peach farmland in the upper catchment area of Feicui Reservoir and Shimen Reservoir. It can be seen from the test results that the application of green control technology can improve crop nutrient absorption rate, reduce water nutrient loss, reduce the use of fertilizers and maintain crop yield and quality. However, it is necessary to appropriately adjust field farming and technology application methods according to factors such as technical functions and farmland soil fertility. In addition, the mass balance model and pollution transmission model established by the test results can grasp the total amount of nutrients input in the agricultural land system, and evaluate the distribution ratio of nutrients absorption by crops or loss through runoff and infiltration. It can also estimate the total amount of nutrient loss through the water body, and evaluate the application effect of green control technology in a systematic way. This plan completed 2 expert consultation meetings, 2 training courses on microbial and green control technology, 38 on-site technical guidance, 3 on-site technical exchange activities, and 2 results presentations, and compiled publicity manuals and documentary videos. The relevant results are used as a reference for the promotion of domestic agricultural non-point source pollution prevention and control technology in the future.