Technical method and device of triploid seed production of rainbow trout

The invention relates to a technical method and a device of triploid seed production of rainbow trout. The technical method comprises the following steps: in proper time after sperm-egg binding, carrying out thermal (shock) treatment on oosperm in low-temperature environment in a certain time interval, then restoring the original low-temperature environment and carrying out cooling water incubation; leading more than 80% of oosperms which need to be incubated into diploid oosperm to generate triploid oosperm after thermal shock treatment; and raising the triploid oosperm into triploid offspring seed (larval fish). The implementation of the technical proposal stops the discharging of a secondary polar body of the oosperm, induces the oosperm to produce another type of oosperm which is fused by the egg,the sperm nucleus and the secondary polar body with respective monoploid chromosome and contains triploid chromosome, namely triploid oosperm, and realize industrialization of triploid seed production. Each therm