Method for culturing biofloc and method for applying biofloc to aquaculture

The invention discloses a method for culturing biofloc and a method for applying the biofloc to aquaculture, and belongs to the technical field of aquaculture. Straw is crushed, and evenly mixed with corn starch and water, the mixture is cut up to solid particles of 0.45 mm to 0.55 mm after being puffed, and the solid particles and aquaculture water are mixed according to the volume ratio of (1-1.2):1; bacillus is added to the aquaculture water, so that the viable count is (2-5)*1,010 cfu/L; suspended solids in a culturing unit are collected, and the biofloc is obtained; when aquaculture is carried out, 0.3-0.5 kg of biofloc is added to each stere of culture pond water, the biofloc is sprayed into the aquaculture water, and the volume ratio of the biofloc to water in a culture pond is kept to range from 10% to 15% in the culture period. A carbon source is obtained through biochemical treatment on the straw, the culturing cost of the biofloc is reduced, the biofloc is promoted to fast grow, and the biofloc with the grain size of 500 micrometers to 1,000 micrometers is obtained. The quality of the aquaculture water is adjusted, and the utilization rate of bait is increased.