| Department: | Plastic Greenhouse |
|---|---|
| Usage: | Commercial Greenhouse |
| Size: | Large |
| Cover Material: | Glass/PC Sheet/Film |
| Layer: | Double |
| Gutter Height: | 4-12m |
| Customization: |
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Audited Supplier Bell peppers (Capsicum annum L.) originate from central and south America. Their cultivation spread throughout Europe and Asia after the 1500's. Although perennial, they grow as annuals in temperate climates. Bell peppers are sensitive to low temperatures and relatively slow to establish. As there is little field production of bell peppers in Alberta, greenhouse production provides most of the local source of this product.
Greenhouse production of sweet bell peppers is based on indeterminate cultivars in which the plants continually develop and grow from new meristems that produce new stems, leaves, flowers and fruit. In comparison, field pepper cultivars are determinate; the plant grows to a certain size, produces fruit, stops growing and eventually dies.
Indeterminate cultivars require constant pruning to manage their growth. In order to optimize yield, a balance between vegetative (leaves and stems) and generative (flowers and fruit) growth must be established and maintained.
Greenhouse pepper production is based on a year-long production cycle. Typically, seeding occurs in early to mid-October, plants are moved from the nursery into the production greenhouses six weeks later, just before Christmas. Harvest begins in late March and continues through to the following November. It takes roughly four months from seeding to first pick.
Greenhouse pepper production is based on a full year cycle (see Figure 3 below). The transplants go into the production greenhouse in approximately mid to late December at 6 weeks of age, the first pick of fruit begins in about late March, early April and continues to the following December.
The greenhouses are empty for only 2 or 3 weeks during the year to allow for the removal of the old crop, thorough cleaning of the greenhouse and setup of the greenhouse for the new crop.
One crop a year is grown. That is, production for the entire year is based on the same set of plants. As it takes approximately 20 weeks (4 months) from seeding the crop to first pick; as a result, growing more than one crop a year is not considered profitable.
In a commercial greenhouse, a wire is put up going from one end of the greenhouse to the other about 10 feet above the plants. Then individual plants are run up to the wire using twine. Plants will naturally climb the twine, but some training is done to make sure it stays climbing its assigned twine, and plastic ties are used to strengthen the plant.
The most common method of greenhouse growing with cucumbers is the Umbrella System. In this system, all side growth is pruned, leaving just the main stem growth until the plant reaches the top wire. Then, once the main stem reaches the wire, the topmost growth, or terminal bud, is removed and the last two lateral branches are allowed to grow sideways and downward.
The growth from these lateral branches will be allowed to hang down up to 3 feet from the ground. The main stem will also produce fruit, but the first 3-4 feet at the bottom will have been pruned to prevent more vegetative growth.
Another system that's gaining popularity is the High-Wire System, sometimes called the Hire-Wire System because it's more labor intensive.
In this system, the top wire is set higher, around 15 feet and the cucumber plant's top bud is allowed to grow until the top of the wire and then pruned back keeping all growth along the main stem.
| Cover Material | Glass/PC/Film |
| Framework | Hot galvanized steel structure |
| Span Length | 8m,9.6m,10.8m, 12m |
| Bay Length | 4m,8m |
| Gutter Height | 4m-12m |
Tianjin Sunshine Greenhouse Imp. & Exp. Co., Ltd. (Sunshine Greenhouse) is a high-tech enterprise in the integration of product research and development, process design, manufacturing, installation, sales and after-sales. The company locates in Tianjin which is close to the seaport with convient transportation. We have been involved in agricultural business for almost 20 years and already built more than 600,000 square meters of different types of greenhouses in and abroad for hydroponic, seedling and nusery, flower planting, vegetable and fruit, entertainment and other industries. Sunshine Greenhouse studies and introduces domestic and foreign advanced scientific and technological achievements continuously to supply high-efficiency, save-energy and environmental products and solution to the customers.
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