>" Hey, these are long in the tank on the lettuce, really strange "hydroponic area inside the exhibition hall, the fish dish called symbiotic exhibition attracted a lot of enthusiastic people to gather around a long glass container, small fish are fun and lively, the container is above the Yi Keke looks shiny glossy dark green lettuce It is understood that this is a new type of composite farming system, it is the aquaculture and vegetable production in the two originally different farming techniques, through clever eco-design, to achieve a scientific collaboration peanuts, fish in order to achieve the water quality does not change the water without worry, vegetables grown without fertilization and normal ecological symbiotic effect in the main display of a red wrinkled koi fish dish with lettuce symbiotic system "This is an ideal eco-agricultural model is being gradually extended," According to technical personnel, that kind of cultivation technology is common in the South, a large lake in the water put on the foam board, foam board in the water spinach planted , the roots immersed in water, the water and fish waste can provide nutrients for the plants, and plant roots canwater purification , fish can not change the water, forming a natural ecology of this symbiosis of new agricultural mode, so cultivation is completely pollution-free vegetables, green vegetables>