Polyculture method for saury and river crabs and freshwater shrimps

The invention relates to the field of aquatic product culture and in particular discloses a polyculture method for saury and river crabs and freshwater shrimps. The polyculture method comprises the following steps: selecting and preparing a pond; constructing escape prevention facilities; launching seedlings of different types; carrying out daily management; fishing different types, and the like.The polyculture method has the outstanding characteristics that a mode different from a conventional single culture mode of saury and river crabs and freshwater shrimps is created, culture water bodies are sufficiently utilized, the saury, the river crabs and the freshwater shrimps are cultured at middle and upper layers and bottom layers of the water bodies in a same pond according to life habitsof the fishes, and the three types of seedlings of the saury, and the river crabs and the freshwater shrimps are launched at different times and polycultured, so that the utilization rate of a pond culture water body is incre