| Abstract: In order to combine aquaculture with vegetable cultivation by aquaponics technology, realize the recycling of water and organic excreta, and finally achieve the goal of 'raising fish without changing water and planting vegetables without fertilization', based on the experience of lettuce cultivation in industrial aquaponics system, the key technical points of lettuce seedling raising technologies, aquaponics system construction, aquaponics period management and lettuce harvesting were summarized, among which, the water in the system was used to replenish water during the seedling raising period, and the mode of lettuce with fish symbiosis was conducted after planting lettuce. Under this system, lettuce of each crop could generate economic benefits of 150 000-180 000 yuan. |