稻田养鱼(草鱼种)、鱼养稻是人工构合的稻鱼共生结构,它将原来的稻田生态系统中的物质循环、能量转化向更有利的方向发展。因此这种结构与传统的“稻田养鱼”有质的不同。稻鱼共生的要旨,主要是使稻谷增产,农民劳动强度减轻,同时也普及养鱼,使淡水鱼产量迅速提高和稻区农民较 Fish farming in the paddy field (grass carp species) and fish raising paddy are symbiotic structures of artificial rice and fish. They develop the material circulation and energy conversion in the original rice paddy ecosystem in a more favorable direction. Therefore, this structure is different from the traditional “paddy fish farming.” The main purpose of rice symbiosis is to increase paddy yield and alleviate the labor intensity of peasants. At the same time, fish breeding should be popularized, so that the production of freshwater fish can rapidly increase and the peasants in rice-growing areas