The felt has a good ventilation condition： 1, site of first line positioning, first prepared according to the planned range of cord tension, and then use the lime powder from the head end of the cord length direction measured at room temperature, the first step is to choose the greenhouse soil more fertile, deep soil with high organic matter content. Advanced local greenhouse rolling machine with machine operation between the straw shed felt can prolong the using time of greenhouse film. Suitable for planting all kinds of vegetables plots built. 2, determine the width of the greenhouse, pay attention to the length and width of the marking greenhouse, form an angle between them, draw a good line, provide more convenient water supply, and make the traffic more convenient, so it is more suitable to build a greenhouse and build a greenhouse. Greenhouse blankets around the most no shade, built on the ground floor, wall greenhouse, preferably built in the tuyere.