Abstract:

The co−culture system of rice and aquatic animals is one of the main models of modern ecologically sustainable agriculture. The rice−fishery aquaculture model, which combines rice and aquatic animals, can not only protect the biodiversity of paddy fields, but also maintain soil fertility and stabilize crop yields, with the potential of controlling water pollution, reducing greenhouse gas emissions, and increasing soil microbial activity in paddy fields. However, there are still controversies about the production performance and eco−environmental benefits of the rice−fishery co−culture system. In this paper, based on the latest research results of the impact of rice−fishery co−culture system on crops and the environment durning 2014 to 2023 at home and abroad, authors synthesized the key effects of rice−fishery co−culture system on crop yields, soil quality, water and gas, combined with the actual situation of rice−fishery co−culture system in China, and made outlooks and suggestions on the future research direction, with the aim of providing scientific support for the sustainable development of rice−fishery co−culture system. The results showed that the rice−fishery co−culture system could increase rice yield and quality, significantly improved soil physicochemical properties and soil microbial activity, and enhanced water quality and reduced CH₄ emission. However, the mechanism of influence on N₂O was not clear, which was mainly due to multiple factors such as water management, fertilizer management and aquatic animal species. 

Key words:

Rish-fishery co-culture system, Yield, Soil fertility, Non-point pollution, Soil microorganisms, Greenhouse gas emissions