Method for promoting blueberry growth and flower bud differentiation by supplementing light

The invention provides a method for promoting blueberry growth and flower bud differentiation by supplementing light, and belongs to the technical field of plant cultivation. The method comprises the following steps: (1) performing retraction treatment on branches after blueberry fruit picking, and cutting off 1/3-1/2 of the branches from the top ends of the branches; (2) installing a lamp strip at the retraction part of the branch, and supplementing red light to the blueberry tree body; (3) first-stage light supplementing is carried out, specifically, red light is supplemented for 2 hours before sunrise and after sunset every day, and the light supplementing time is prolonged to 2.5 hours every two weeks until the light supplementing time is 3 hours after two months; and (4) carrying out second-stage light supplementing, namely supplementing red light for 3 hours after sunrise and before sunset every day, adjusting the light supplementing time after sunrise by half an hour later every two weeks, advancing th