Raising ducks in rice fields is an extensive way of raising ducks. In the rice-duck symbiosis breeding model, duck raising is only an auxiliary industry for the production of green and high-quality rice, and mainly plays a role in biological control. Therefore, when selecting duck breeds, focus on small and medium-sized fine breeds with strong vitality, wide adaptability, tolerance to rough feeding, and strong stress resistance. It is recommended to raise egg-meat varieties such as Ji'an Red Feathered Duck and Mountain Shelduck.