One acre of steel frame greenhouse costs 23,310 yuan.
The greenhouse is made of bamboo poles, cement poles, light steel pipes or pipes and other materials as the skeleton, to make upright columns, tie rods, arch rods and pressure rods, and covered with plastic film to form an arched shed. Plastic greenhouses generally cover an area of ??1-3 acres and are easy to manage. But it can cover a large area with multiple sheds. Because the shed is tall and it is inconvenient to use straw curtains to prevent cold, multi-layer films are used inside the shed to prevent cold. The temperature inside the shed mainly comes from solar radiation. The main production seasons are spring, summer and autumn. In areas where the winter temperature is above -15°C, some cold-resistant crops can be planted, or stoves can be used for temporary supplementary heating. Because its shed shape is taller than that of medium and small sheds, and it is different from the architectural structure of a greenhouse, it is called a greenhouse. In the arid areas of northern my country, where the spring is cold, the frozen soil is deep, and the wind and snow are strong, arched round sheds with larger spans and heights are often used. There are many forms of greenhouse construction. Among them, there are two types of single greenhouses: arch-shaped and ridge-shaped.