Core Viewpoint - The article discusses the transition of the Dapu pomelo industry towards sustainable agricultural practices, focusing on the replacement of chemical fertilizers with green manure and organic fertilizers to restore soil health and enhance product quality [4][7][66]. Group 1: Soil Health and Agricultural Practices - The reliance on chemical fertilizers has led to soil degradation, including issues like soil acidification and reduced organic matter, which negatively impacts pomelo quality and increases market risks [12][14][15]. - A consensus has emerged among various stakeholders, including government agencies and local farmers, to explore the path of "green manure organic fertilizer replacement" to restore soil health and reduce chemical fertilizer dependency [16][18][19]. Group 2: Green Manure Benefits - Green manure is not merely about planting grass; it involves creating a micro-ecosystem that improves soil structure, conserves water, and enhances biodiversity [23][25]. - Leguminous green manures have nitrogen-fixing capabilities, converting atmospheric nitrogen into a form that plants can absorb, thus reducing the need for chemical nitrogen fertilizers [27][29]. Group 3: Implementation and Challenges - The successful implementation of green manure requires careful selection of species that are well-suited to local conditions, such as fast-growing varieties that can suppress weeds [30][34]. - The transition from expert knowledge to practical application in the fields involves a complex system of technical promotion, cost-benefit analysis, market incentives, and policy support [44][46]. Group 4: Market Dynamics and Future Outlook - The involvement of companies in providing specific products and solutions is crucial for the practical application of green manure techniques, reflecting a market response to the demand for sustainable agriculture [51][56]. - Establishing effective market return mechanisms is essential for motivating farmers to adopt green manure practices, with potential for premium pricing for higher quality, sustainably produced pomelos [60][62]. Group 5: Broader Implications - The exploration of sustainable practices in the Dapu pomelo industry signifies a shift from high-input agricultural models to a more sustainable approach that benefits both the environment and the economy [65][68].