Core Viewpoint - The article emphasizes the need for innovative exploration in farmland protection, particularly in the context of China's "Big Food Concept" and rural revitalization efforts, highlighting the importance of balancing quantity, quality, and ecological protection of farmland to ensure food security and diverse food supply [3][23]. Summary by Sections Farmland Protection and Utilization - The concept of "Big Food" requires maintaining the quantity of staple food farmland while scientifically utilizing land resources to meet diverse food needs, prompting a deep reflection on farmland utilization models in southern mountainous regions [3][23]. - Fujian province is implementing refined innovations in land use regulation, promoting composite farming practices that allow for multiple uses of the same plot of land, thereby enhancing overall land utilization efficiency without changing the land's classification [3][4][23]. Quality Improvement and Ecological Value - There is a shift from merely restoring degraded farmland to enhancing its quality, with initiatives like "rice-fish co-culture" that improve soil health and reduce pollution while increasing the ecological value of farmland [4][23]. - The goal is to transform low-efficiency farmland into high-yield, high-quality ecological farmland, thereby stimulating the intrinsic motivation for farmland protection and utilization [4][23]. Ecological Protection and Spatial Optimization - Farmland protection in complex mountainous terrains must integrate with the management of water, forests, fields, lakes, grasslands, and deserts, focusing on optimizing spatial layouts [5][23]. - Fujian is exploring mechanisms for spatial replacement and ecological restoration, aiming to create a harmonious ecosystem that supports both agricultural productivity and ecological sustainability [5][23]. Technological Innovation and Talent Development - Research efforts are focused on cultivating high-quality, interdisciplinary talent to support the implementation of the "Big Food" strategy, emphasizing practical experience in natural resource protection [6][24]. - The article advocates for systematic research to provide scientific support for the integrated protection of farmland quantity, quality, and ecology in southern mountainous areas [6][24]. Decision-Making and Practical Application - There is a call for improved decision-making capabilities in farmland protection, integrating grassroots practices with advanced theoretical insights to address regional development challenges [8][24]. - The aim is to translate research findings into practical technologies that farmers can easily understand and apply, thereby enhancing food security, ecological protection, and farmer income [8][25].