Hybrid wind farms, composed of grid-following and grid-forming turbines, have the advantage of stable operation across a wide range of short-circuit ratio. However, the interaction of frequency and voltage control in a weak grid poses challenges in achieving coordinated support. Based on analyzing the mechanism of frequency-voltage dynamic coupling characteristics in grid-following and grid-forming converters, a distributed adaptive decoupling control suitable for frequency-voltage support in hybrid wind farms is proposed. The proposed control strategy consists of two control hierarchical levels: distributed cooperative control among turbines and adaptive frequency-voltage decoupling control at the unit level within individual turbines. The distributed control ensures coordinated and consistent output among turbines, maximizing the utilization of rotor kinetic energy. Meanwhile, the adaptive control considers the operating state of each turbine within the wind farm, enabling effective regulation while maintaining stability. Finally, the decoupling compensation control decouples the active and reactive power feedforward of the grid-following and grid-forming wind turbines. This suppresses the interaction effects during frequency-voltage support. A hybrid wind farm connected to a four-machine two-region system is built on the Matlab/Simulink simulation platform. The simulation results verify the feasibility and advancement of the proposed frequency-voltage support control for hybrid wind farms.