An artificially cultured feed suitable for megalopa in northern saline-alkaline paddy fields

The feed comprises a Phase I feed, a Phase II feed, and a Phase III feed. The Phase I feed includes the following components: aquacultural digestive yeast, fish meal, cornmeal, bran, vegetable oil, soybean meal, barley flour, and mineral and vitamin additives.

The Phase II and Phase III feeds include the following components: aquacultural digestive yeast, fish meal, cornmeal, bran, vegetable oil, soybean meal, barley flour, mineral and vitamin additives, and gelatin. In the Phase I, Phase II, and Phase III feeds, the amount of aquacultural digestive yeast is sequentially reduced. By feeding different feeds at different stages, the present invention thereby increases the yield of river crabs.