Due to the grim situation that non-point source pollution in agriculture in China has exceeded industrial pollution and urban pollution on an overall scale while remains still underestimated and neglected, this article, with a case study of clean production of proposed Ningxiang Paddy Rice Chemical Factory, has herein explored the experimental research method of county-level hybrid rice ecological engineering knowledge/information systems integration method, and illuminated clean production technical route and recycling economy mode oriented by ecological agricultural industrialization, and co...