Tillage practices alter the interaction between soil and rice straw, impacting soil quality and cadmium (Cd) dynamics. However, the effects of tillage and straw management strategies on soil Cd accumulation and rice uptake remain unclear. This study investigated how tillage and straw practices influence rice Cd uptake by altering soil Cd mobility and bioavailability. A long-term field experiment was conducted with four treatments: no-tillage with straw return on the soil surface (NTS), rotary tillage with straw incorporate (RTS), plow tillage with straw incorporate (PTS), and plow tillage with...