Duckweed likes warm waters, and the high temperature in summer can promote its growth, keep the water clean and stable, and avoid eutrophication and pollution. Regularly clean the debris and fallen leaves on the water surface so as not to hinder the growth of duckweed. The water temperature suitable for duckweed growth is between 20-30 degrees Celsius, and duckweed still needs a certain amount of nutrition supply because of its relatively low demand for nutrients. Appropriate amount of water fertilizer or organic fertilizer can be added to provide appropriate nutrient supply.