Rock worm-gracilaria-sea cucumber pond mixing breeding method

The invention discloses a rock worm-gracilaria-sea cucumber pond mixing breeding method. A stereoscopic mixing breeding can be implemented in the inshore breeding ponds by manually putting in sea cucumbers, rock worms and gracilaria seedlings. Breeding space and nutrient substance of the sea cucumber pond can be effectively utilized to be converted into gracilaria plant productivity, wherein the gracilaria plant productivity is provided with economic value. Pond eutrophication can be prevented from happening. Pond sedimentary organic particulate matters of sea cucumber excrements and the like can be effectively utilized as baits for rock worms. Polluting rate of pond bottom which is caused by excessive accumulation of sea cucumber excrements can be reduced. Then, breeding benefits of a pond unit can be improved. Because the rock worms are high in economic value, benefit rate of a yield per unit area of the mixing breeding can be enhanced for 1-2 times. The rock worms can be caught in one time through a labor excavating method every three years. Pond bottom dredging and substrate renovation can be implemented at the same time in the catching process. The difficulty that substrate sludge of common aquaculture ponds of a common pond can not be cleared for a long time can be overcome.