The method of nitrogen supplement of Nepenthes is the result of Nepenthes to the environment.

Purification. Nepenthes ) Nepenthes is a general term for all species of Nepenthes. It belongs to tropical insect-eating plants, and its origin is mainly in the tropical areas of the Old World. It has a unique organ to absorb nutrients-insect trap, which is cylindrical, with a slightly larger lower part and a cover on the mouth, so it is named because it looks like a pig cage. Alias Nepenthes, Monkey Bottle, Monkey Process, Piggy Cage and Leigong Pot. Insectivorous plants grow in poor soil, especially in nitrogen-deficient areas. They can carry out photosynthetic autotrophy, catch insects at the same time, and use digestive enzymes to absorb nitrogen from insect carcasses, thus purifying the environment. Nepenthes is one of the representatives.