In the context of global climate change and energy and resource scarcity, understanding the factors that influence the adoption of green production technology by rice farmers and promoting a transformation in agricultural practices towards low-carbon and environmentally friendly methods represent a crucial step towards achieving sustainable development. This study employs an ordered logit model to comprehensively explore the influence mechanism of social capital and risk preference within the adoption of green production technology by rice farmers. Research indicates that social capital can significantly and positively affect rice farmers’ uptake of green production technology. Among various dimensions, it can be seen that the role of social participation emerges as a particularly salient factor. The analysis of risk preference demonstrates that it exerts a negative moderating influence. The heterogeneity analysis results indicate that new-generation and part-time rice farmers prefer adopting new technologies if they possess higher social capital. In light of the findings above, it is recommended that the organizational support of cooperatives and collective action be reinforced; the use of digital technologies in agriculture should be increased; the livelihood changes of rice farmers be considered to meet their heterogeneous needs accurately; and the integration of carbon emission reduction policies and green production technologies be strengthened to promote the widespread adoption of green technologies among rice farmers.