What is a multi-span greenhouse?

What is a multi-span greenhouse?

The multi-span greenhouse is an upgraded existence of the greenhouse. In fact, it is a super-large greenhouse. The original independent single-room greenhouse is connected by scientific means, reasonable design and gutter. Thus, more

The area across the greenhouse is not limited to the original hundreds of square meters, but can reach thousands or even tens of thousands of square meters of greenhouses. At present, my country has built a number of single units covering an area of more than 100,000 square meters.

Rice growing in greenhouse.

2. What are the advantages and disadvantages of multi-span greenhouses?

1 The significant advantage of multi-span greenhouses is to improve land utilization. The land utilization rate of the traditional back wall vegetable greenhouse is about 50%, while the multi-span greenhouse is not limited by the soil wall and the front and rear area. China Flat

The average per capita covers an area of 0.54 hectares, and more than 0.67 hectares, which is only 29% of the world's per capita. Improving land utilization, yield and efficiency - has always been the focus of our country's agriculture, rural areas and farmers' work

point.

2. Improve the level of mechanized production and liberate labor productivity. First of all, from the perspective of the environmental control system of the multi-span greenhouse, electric sunshade, electric roll film (window opening) ventilation, electric heat preservation are realized.

Cool down by the water stalk of the electric fan. The environmental control ability of the greenhouse is more stable and reasonable, and the work efficiency is higher. No manual operation is required, just press the switch of the power distribution cabinet. Looking at even ten years ago

Up to now, the agricultural production in some backward areas is a great progress for China's facility agriculture. Secondly, mechanized automatic sprinkler irrigation, integrated water and fertilizer machines, automatic seeders and even IoT control software

All can be installed in our multi-span greenhouse, greatly improving production efficiency, realizing precise irrigation and fertilization, water saving and fertilizer saving, soilless cultivation, etc. to protect soil from pollution.

The third is the shortcomings of the multi-span greenhouse. Compared with the traditional soil greenhouses, the multi-span greenhouses in the northern region do have the disadvantages of high energy consumption in winter and poor thermal insulation performance. But with my country's facility agriculture technology

The development of technology, such as wall insulation, top double-layer insulation, double-layer film greenhouse, the application of wall insulation and interlayer, and the popularization and application of some active heat storage technologies, the thermal insulation system of multi-span greenhouses in my country

The number has been significantly improved, and the gap with the traditional earthen shed is getting smaller and smaller.

Third, the style and cost of multi-span greenhouses.

Multi-span greenhouses are divided into film greenhouses, solar panel greenhouses and glass greenhouses according to covering materials. The previous article provides a detailed overview of the advantages and disadvantages of various covering materials, as well as the factors that affect the cost of multi-span greenhouses.

elements, such as greenhouse height, frame material specifications (region), number of supporting systems (external shading system, internal shading system, internal thermal insulation system, roof window system, wall window system, fan

Water stalk forced exhaust system, heating system, dew collection tank system, snow melting pipe system), differences in specifications of covering materials, etc.