Ecological principle of mulberry fish pond

Sangji fish pond applies the principles of material circulation, systematics and engineering, species diversity, coordination and balance, and any ecosystem can maintain its stability only if all the principles are consistent. The most basic biological factors in mulberry field are mulberry leaves and grass; Consumers are silkworms and fish; Decompose bacteria and fungi.

Sangji fish pond is a traditional compound agricultural production mode created by people in the eastern and southern water network areas of China in the utilization of water and soil resources. Huzhou Sangji fish pond system began in the Spring and Autumn Period and the Warring States Period from 770 BC to 403 BC, with a history of more than 2,500 years.