Method for regulating and controlling flowering phase of castanopsis hystrix

The invention provides a castanopsis hystrix flowering phase regulation and control method, which comprises the steps of nursery stock selection, flowering phase regulation and control treatment and spraying, and is characterized in that castanopsis hystrix grafted seedling plants with fruiting mother branches completely developed but not aged temporarily are selected from the end of September to the last ten days of February of the next year; different exogenous hormones and nutrient elements are sprayed in three different periods for flowering phase regulation and control treatment, whole plant leaf surface spraying is carried out during spraying, spraying is carried out again after leaves are completely dried, and the operation is repeated twice; and spraying once every 5 days. Different exogenous hormones and nutrient elements are sprayed according to different flowering periods of castanopsis hystrix grafted seedlings, the flower forcing effect is good, the consistency is high, the defect that castanopsi