The parasitic pest is omnipresent in the world providing there are biological communities existing. Almost everywhere on the earth,human health is constantly threatened by some parasites to a greater or lesser degree....The parasitic pest is omnipresent in the world providing there are biological communities existing. Almost everywhere on the earth,human health is constantly threatened by some parasites to a greater or lesser degree.In the same way,domestic animals and economic plants have always fallen prey to the scourge.leading to yield reductions.As parasitic diseases are chronic in progress,people often neglect them until they become fatal.China is a country with vast territory and diversity in the展开更多
文摘The parasitic pest is omnipresent in the world providing there are biological communities existing. Almost everywhere on the earth,human health is constantly threatened by some parasites to a greater or lesser degree.In the same way,domestic animals and economic plants have always fallen prey to the scourge.leading to yield reductions.As parasitic diseases are chronic in progress,people often neglect them until they become fatal.China is a country with vast territory and diversity in the
