Amid the deep empowerment of the digital economy and the rural revitalization strategy, agricultural digital technology is regarded as a core driving force for simultaneous promotion of agricultural modernization and coordinated regional development. From the perspective of coordinated regional agricultural development, the impact of agricultural digital technology flow was systematically investigated based on patents spanning from 2001 to 2023. Non-equilibrium characteristics were observed in cross-regional technology flow. A "center-periphery" network pattern was formed, where developed cities serve as core hubs and small-medium cities were positioned at the edge of technology diffusion. Regional disparities are effectively narrowed by directional technology flow. Conversely, reverse flow triggers a "siphon effect" detrimental to regional convergence. The mediating effect of demand adaptability is identified to exceed that of technological adaptability. Regional heterogeneity is manifested in coordination effects: limited effects are observed in intra-eastern flows, strongest effects in central-western flows, and optimal outcomes in directional flows from east to central-west. Significant promotional effects are generated by directional flow in regions with minor agricultural development gradients, well-established digital infrastructure, and comparable initialization levels. References are provided for guiding orderly technology flow and balanced regional agricultural development.