Vocabulary explanation about greenhouse

7.Cold greenhouse: Plastic greenhouse, commonly known as cold greenhouse, is a simple and practical protected land cultivation facility. Due to its easy construction, convenient use and low investment, it has been widely used by countries around the world with the development of the plastics industry. Using materials such as bamboo, wood, and steel, and covering them with plastic films to build arched sheds, supply can be earlier or delayed compared to open field cultivation.

8.Venlo type greenhouse: The Venlo type greenhouse was born in the Netherlands. It is a small-roofed multi-span greenhouse. Each span is a triangular spire. The main frame is a three-ridge hot-dip galvanized steel structure. The covering material is Glass or PC solar panel. High light transmittance and less shading. Unique skylight design, the ridge of each small roof is the boundary of the left and right staggered skylights, and the heat is dissipated from the top.

9.Type 8430 greenhouse: also called dome-type membrane multi-span greenhouse, it is a multi-span greenhouse in which individual pillared arches are connected with water troughs. Due to the use of a single layer of film material covering, the thermal insulation performance is poor, especially in northern areas, the energy consumption is too high in winter. Film multi-span greenhouses in the northern region are often transformed into double-layer films or triple-layer films for use; however, they are feasible for growing flowers. If the light for growing vegetables is too weak, it will affect the normal growth of vegetables.

10.Yin and Yang greenhouse: On the north side of the back wall of the traditional solar greenhouse, borrow (or share) the back wall to add a slope greenhouse of the same length with the lighting side facing north. The two together form a Yin and Yang greenhouse. Generally, according to the light requirements of crops, edible fungi or shade-tolerant crops are often chosen for greenhouses on the backlit side.

11.Double-arch double-membrane: The greenhouse frame is divided into two layers: the inner and outer layers. The outer frame is covered with a light-transmitting membrane, and the inner frame is covered with a waterproof and insulating shed film and an insulating straw curtain. A roller shutter machine and a rolling curtain are installed between the double-layer frames. Film machine for easy heat preservation. The multi-layer insulation layer is increased from 2 layers in ordinary greenhouses to 4 layers, namely: inner greenhouse film, straw curtain, outer greenhouse film and a static air isolation layer between the outer greenhouse film and straw curtain, and creates a grass Environmental conditions in which air does not flow between curtain gaps. Greenhouse straw curtains and inner membranes cover the inner scaffolding at night to protect against heat and cold.

12. Double-layer inflatable film greenhouse: It is an energy-saving greenhouse. Compared with a single-layer plastic film greenhouse, it has a significant energy-saving and heat preservation effect (generally the energy saving rate is more than 40%). In terms of greenhouse structure, there is not much difference between a double-layer inflatable film greenhouse and a single-layer plastic greenhouse. The main difference lies in the solid film structure of the plastic film. The double-layer inflatable film greenhouse does not require a film pressing line. It is only fixed around the plastic film. The air pump or blower is used to inflate the film between the two layers of film to support the film, so that the inner layer of the film is close to the greenhouse frame, and the outer layer of the film is pressed against the greenhouse by air pressure. The inner film is isolated to form an air interlayer and produce thermal insulation.