The vegetative organs of plants include roots, stems, leaves and their appendages. Its main function is to provide nutrients for plant growth and development. Among them, the root system plays the role of absorbing soil moisture and inorganic salts and fixing plants; Stem plays the role of transporting water, inorganic salts and organic matter upward and downward, and also plays the role of supporting and connecting; Leaf is a "processing factory" for making nutrients, which mainly plays a role in making nutrients through photosynthesis.