Abstract: September through October of each year is the active season of parasitizing for Agamermissp.They parasitize on rice hoppers and kill them finally.The soil humidity is the majorfactor influencing the development of Agamermis sp.The parasitizing ratio of Agamermissp.increases with soil humidity.Rational application of pesticides and chemical fertilizersis suggested to protect the Agamermis sp.and to decrease pollution of the environment.

Key words: Allelopathy, Ecology, Forestry, Agriculture