Multi Span Greenhouse

6 month ago

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Chongqing Qingcheng Agricultural Science and Technology Co.,Ltd

7 month

Product details

Multi span Greenhouse With Shade Systems

This is an upgraded system created by adding an external shade net (usually made of black or green high-density polyethylene) and a matching drive device (manual or electric roller shutter) to the top of a basic, simple multi-span greenhouse. The external shade net can be flexibly extended and retracted according to light intensity, effectively solving the problems of excessive sunlight and high internal temperature in summer, while retaining the basic functions of wind and rain protection and light transmission.

Key Advantages

① Significant Light Control and Cooling Effect: The external shade net can block 30%-70% of direct sunlight, effectively reducing the internal temperature by 5-8℃, preventing strong sunlight from scorching crop leaves and inhibiting flower bud differentiation.

② Flexible Light Adjustment: The shading net can be electrically or manually controlled to precisely adjust light intensity according to the crop's growth needs (e.g., weak light for seedlings, strong light for maturity), adapting to different crop growth stages.

③ Extended Greenhouse Film Lifespan: The shade net blocks direct ultraviolet rays from the greenhouse film, reducing the rate of film aging and extending the film's lifespan by 2-3 years, thus reducing later maintenance costs.

④ Retaining Basic Advantages: Inheriting the low cost, easy maintenance, and spaciousness of the simple multi-span greenhouse, it offers low upgrade costs and outstanding cost-effectiveness.

Applicable Scenarios

Suitable for areas with high temperatures and strong sunlight in summer (such as summer in the south and the dog days of summer in the north) or for planting crops sensitive to light, such as: seedling cultivation of solanaceous vegetables (tomatoes, peppers), succulent cultivation, and high-end flower cultivation (roses, orchids); it can also be used for summer cooling cultivation of leafy vegetables in the north, avoiding yield reduction caused by high-temperature stress.

Multi Span Greenhouse

A Greenhouse is a vital tool for controlled environment agriculture. Specifically, a Multi Span Greenhouse connects several standard bays under one expansive roof, maximizing space and structural efficiency for large-scale production. It is often clad with cost-effective polyethylene film. For superior temperature management, such a structure can be upgraded to an Insulated Greenhouse. This is achieved by using a double-layer film with air continuously pumped between the layers, creating a stable thermal buffer that conserves energy and protects crops from extreme outdoor temperatures, making it an efficient solution for year-round cultivation.

Span (m)	Number of spans	Bay width (m)	Number of bays	Greenhouse area (m²)
6-16	OEM	4-12	OEM	OEM
Span length (m)	Bay length (m)	Eave height (m)	Ridge height (m)	External shading height (m)
OEM	OEM	2.5-11	4-12	4-13

Structural forms: Circular arch type, sawtooth type, ridge type

Span: 6-16 meters, bay spacing 4-12 meters, customizable

Service life: Main structure 15 years or more

Covering material: Single-layer film or double-layer inflatable film

Cost: Starting from 40 RMB per square meter

Advantages of Multi-Span Film Greenhouses:

① Large lighting area and uniform illumination;

② Stable structure, corrosion-resistant and moisture-proof, long service life;

③ Strong corrosion resistance;

④ Good light transmittance (over 80%);

⑤ Economical and practical, low cost;

Disadvantages of Multi-Span Film Greenhouses:

① General insulation performance and average temperature control effect;

Supporting Systems (OEM or Recommended):

1. Shading system: Based on the principle of tree shade, providing physical cooling;

2. Natural ventilation system: Roof windows and side windows (manual or electric operation, ventilation area can be customized);

3. Forced cooling system: Wet curtain fan forced cooling system, utilizing water and air exchange to remove heat, effectively lowering the greenhouse temperature by 3 to 8 degrees Celsius;

Heating system, supplementary lighting system, fertilization system, irrigation system, intelligent control system, etc.

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Chongqing Qingcheng Agricultural Science and Technology Co.,Ltd

Audited supplier

7 month

Main Product: Polytunnel Plastic, Green House, Greenhouse Frame, Polytunnel Greenhouse , Hoop Greenhouse, Insulated Greenhouse

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