3. New solar greenhouse shed:
Greenhouse prices: this type of greenhouse shed is built at $1400 - 1800 per metre, which is the result of the upgrading of the earth wall sun-light greenhouse. It applies to high-value-added industries such as scientific experiments, seedlings and exhibitions。
Specification: the overall structure is consistent with the traditional solar greenhouses and can span more than 15 metres. The walls are partially constructed with earth walls and then reinforced with concrete sand; the slabs are made of hot zinc-plated rectangles with kaled slots, the rest of which are the same as the earth wall sun-light greenhouses。
Advantages: the consolidation of the walls of the new solar greenhouses with concrete slurry reduces the risk of collapse of the earthwalls and increases in their durability and useful life by more than 5 to 10 years; the thin film of the sheds is fixed with a carding slot, which will make it easier to replace them later; and the vast space is large enough to accommodate advanced equipment, such as mobile nursery beds and mobile spraying。
Shortcomings: the size of the wall is large, the price of the greenhouses on the tianbao agricultural technical services platform (id:tianbaonj) is higher, the price of the solar greenhouses has been reduced and it is more difficult to universalize。
Based on a comparison of the three solar greenhouses, it can be seen that the earth wall solar greenhouses have lower construction prices and lower maintenance costs for later use, the highest value for money in the three solar greenhouses. It is recommended that, where the land is more abundant, the construction should be carried out in the form of earth-wall sun-light greenhouses。
Ii. Price of single arch sheds:
Single arch sheds are also called arch plastic sheds, spring and autumn sheds, and are currently divided into three main types: concrete pole arch sheds, steel pipe shacks, new high-temperature arch sheds, of which cement poles and steel tubs are for spring and autumn production. As a result of the increase in temperature-preservation measures, such as warm cotton, heat-preservation within greenhouses is more effective and belongs to high-temperature huts that can meet the winter production needs of low-temperature crops. Specific prices are as follows:
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1. Cement pole arch:
Prices for greenhouses: this aqueous greenhouses, at $30 per square metre, are for cash crops such as vegetables, flowers, etc。
Specifications: cement pole archer generally spans 16-24 metres, and the skeleton structure uses a mix of steel pipes and bamboo poles, with 1 inch or 1. 2 inches of thermal zinc plating pipe as the main archer, supported by cement poles and then covered by the sheet film。
Advantages: this can be built at lower prices, with more flexibility in land use, so that smaller plots can build a shed。
Shortcomings: lower resistance to snow and snow due to simpler skeleton structures; internal operation space affected by the presence of poles。
2. Aqueducts:
The price of a greenhouse: this steel pipe greenhouse is worth $35 per square
Configuration: the range is generally 8-14 metres, the skeletons are all welded with a heat-plated zinc steel tube or rectangular tube, and the greenhouses are equipped with manual diaphragms and anti-worm nets on both sides。
Advantages: low greenhouse shed prices, high overall bone structure intensity and high land use。
Shortcomings: weak heat retention capacity to meet winter production needs. For use in spring and autumn vegetables, fruit, flowers and edible bacteria。
3. New types of hot arch:
Greenhouse prices: this new type of high-temperature arch shed has prices ranging from $85 to $100 per square metre, with reference to configurations。
The new high-temperature arch sheds are developed on the basis of the recommended pipe archers and can reach a distance of more than 20 metres. They use an enhanced skeleton structure, which typically uses a hot zinc plating steel pipe or ellipse pipe for processing skeletons of 1. 5 or 2 inches, with two rolls of drape machines at the top of the sheds, and with a special roof covered with hot cotton, which improves the temperature protection of the sheds during the winter。
Advantages: greater internal space, easy maintenance operations, some temperature-preservation during the winter and four seasons of production。
Shortcomings: the greenhouse shed is expensive and the tianbao agricultural technical services platform (id:tianbaonj) can only meet the growth needs of low-temperature plants. For crop cultivation that does not require high temperature during winter。
On the whole, it can be seen that arch sheds have low prices, high land-use rates and easy-to-manage advantages and are suitable for crop cultivation such as spring and autumn vegetables, fruits, flowers and food fungus, and that high-temperature arch sheds can be used for winterization protection of high-value-added crops such as meat plants and flowers。
Iii. Prices of arch sheds:
The arch sheds are constructed on a single archer basis, generally divided into simple arches and high-coated arches, which are currently used mainly in production greenhouses such as seedlings, flower production, aquaculture, medicinal products and food bacteria cultivation。
1. Simple arch sheds:
The greenhouses price: the greenhouses are built at around $75 per square metre and are used for planting high-value vegetables, flowers, medicines, food fungus, etc。
Configuration: its skeletons use a heat-filled zinc rectangular tube or a dome, with a cleavage on the top and a ventilation window on the end, similar to the basic structure of the archer。
Advantages: large internal space, fit-for-scale chemical plant operations, high land use
Shortcomings: higher construction prices, lower temperature efficiency in summer and high demand for drainage。
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2. High-assembly arch sheds:
Warmhouse prices: the price of these greenhouses is around 160 yuan per square metre, and applies to the sectors of stereoculture, flower farming, aquaculture, seedling and research。
Specifications: the high-composite arch shed is an upgraded version of the simple greenhouse, which adds internal and external systems for sunshield, wet curtain windmill cooling, side-window ventilation, temperature protection, etc. To the simple model
Advantages: overcoming summer cooling and winter cooling, in particular by increasing the double layer of thin film, can effectively increase winter greenhouse temperature protection and reduce winter operating costs。
Shortcomings: large sheds are relatively expensive and suitable for more economically efficient industrial use; winter temperature protection is more common without a double layer of thin film。
Iv. Prices of greenhouses:
The venro greenhouse, which was introduced from the city of winro, the netherlands, and was initially used for the cultivation of high-value crops such as flowers, is the type of greenhouse for the main facilities currently used for the production of plants in developed countries, such as vegetable vegetables and flowers. The venro-style greenhouses consist mainly of two types of glass and sunscreen, the main difference being that the covering material is one glass and one sunscreen. The tianbao platform for agricultural technical services (id:tianbaonj) has, of course, had individual cases of membrane cover, but it is less expensive than even an arch shed。
1. Glass chain greenhouses:
Greenhouse prices: these greenhouses are usually built at around $400 to $450 per square, with higher structural heights and higher greenhouse prices. For use in greenhouses such as stereoculture, scientific seedlings, eco-cafés and recreational tourism。
Specifications: the venro greenhouses are typically 9. 6-12 metres wide and open about 4 metres wide, with an improved structure of 16 metres wide and 8 metres wide, but the greenhouses are expensive. The basic configuration should include cooling of the wet curtain windmill, winding of windows, winding of side-windows, sun-covering, internal cooling, temperature protection systems, etc., with additional configurations such as mobile seedbeds, mobile spraying, stereoponics, hydrofertilizer systems, photovoltaic systems, intellectual control systems, etc., as required, generally using full-electric controls and a higher degree of automation。
Advantages: large appearances and relatively high greenhouse grades; full steel frame structure, advanced design, strong resistance to snow and snow, with a serviceable life of more than 25 years; large in-house operating space, with large connections, suitable for factoryization and scale-up of production operations; high degree of greenhouse automation and expanded choice。
Shortcomings: higher greenhouses prices and higher investment costs; winter temperature preservation requires additional heating facilities; glass is used as a fragile object, with security risks during use, and steel glass is not widely used。
2. Solar panels greenhouses:
Greenhouse prices: this sun-board greenhouse is typically built at around $350-400 per square metre, and the main difference between the tianbao agricultural service platform (id:tianbaonj) and the glass company greenhouse is the relatively low cost of cover materials and skeleton construction. The same applies to greenhouses such as stereoculture, scientific seedlings, eco-cafés and recreational tourism。
Specifications: the solar panels are essentially the same as the glass and glass greenhouses, all of which are intelligent and complex greenhouses, with the difference between covered materials and skeleton loads varying in strength。
Advantages: lower costs compared to glass-coated greenhouses; lower-quality and safer sunlight panels; better heat insulation of sunlight panels; solid steel skeleton structure and long life。
Shortcomings: sunboard perceiving efficiency decreases over time of use; solar panels need to be replaced after they become very old; winter temperature protection also needs to be increased。
This paper was prepared by the tekami technological team
