Briefly describe the types and functions of wind-proof walls.

Comprise a base ridge and a fence, and that windbreak with a cloak also comprises a cloak part; Fence is the main body of windbreak forest, with a height of 2.5-3 meters, which is generally composed of reeds, sorghum stalks, corn stalks, fine bamboo and pine trees. The foundation beam is a soil ridge built on the north side of the fence base, which is generally about 20cm high and used to fix the fence. The cloak is a layer of firewood attached to the north of the fence to enhance the function of wind protection and heat preservation. Its base and fence are buried in the soil together.

Facilities in steering flow. A barrier made of reeds and sorghum stalks beside vegetable fields is used to protect seedlings from the wind. In the greening production, the wind barrier can block the cold wind, which has a great cold-proof effect and can improve the local environmental temperature and humidity.