The invention relates to a culture regulation and control method for regulating and controlling late propagation of mandarin fish in autumn, and belongs to the field of artificial fish propagation in an
aquaculture technology. The method comprises the following steps: (1) spawning induction in spring: injecting high-
dose single
oxytocin into mandarin fish parents; (2) completing partial oviposition under the action of high-
dose single
oxytocin, and realizing that the average oviposition amount of each female fish is 20-30% of the theoretical
brood amount in spring; (3) carrying out bait control management from spawning to the end of June, reducing the feeding amount, and enabling the oviposition to be in a
nutrition state of maintaining or slowly growing; (4) from July to August, carrying out
nutrient enrichment cultivation, and recovering sufficient feeding in a period of time before formal spawning induction so as to promote rapid
secondary development of gonads of the parent mandarin fish; spawning induction
hormone is injected according to a conventional effective
dose,
artificial fertilization of the parent mandarin fish is induced, concentrated spawning is achieved, and the average spawning amount of each female fish is 80%-90% of the
brood amount in autumn. According to the method, the mandarin fish parents can be used for two purposes in one year only through conventional
hormone injection and
feed management.