At present, there is no good method to control water hyacinth. Personally, I think there is another way, because water hyacinth can't survive the winter when the water temperature is lower than 10 degrees, so the infection of water hyacinth occurs in the south. After Anhui, there will be no distribution of water hyacinth, let alone its overgrowth. However, the water hyacinth rots in the water body after overgrowth, and the heat generated can keep some nutrients overwintering, and it will overgrow again when the water temperature rises next year, so this method remains to be seen.