Thursday, January 8, 2015

Traditional glass material blade brown bags and boxes 2 download to cover greenhouses - glass. An i

Hothouse 'Choice covering greenhouses
Categories Greenhouse Ventilation Growing mushrooms Vegetables Growing strawberries frames greenhouses heated greenhouses Construction of greenhouses greenhouse lighting Surface Irrigation Greenhouse Greenhouse Hothouse own hands pests in greenhouses Projects: Greenhouse Polycarbonate own hands (drawings) Project greenhouses I developed myself, given all the flaws and nakoplenyy previous experience ... Greenhouse Polycarbonate Polycarbonate greenhouse project, eliminating the shortcomings of polycarbonate greenhouses arched tunnel greenhouse ... with plastic pipes Project greenhouses with using PVC pipe is very simple and cheap, only film, pipe and board ...
How to choose a cover greenhouses? blade brown bags and boxes 2 download The issue at stake is not only to novice blade brown bags and boxes 2 download gardeners, but also to experienced people. Progress does not stand still and greenhouse constantly upgraded. At the same time, they differ in size, shape, materials, and of course, price. Below I will give advantages and disadvantages of various typical coverage for your greenhouse. The polyethylene film most economical material for covering blade brown bags and boxes 2 download greenhouses - plastic sheeting. Cover with the help of small greenhouse can even novice gardeners. Polyethylene is well transmits light and protects plants from wind and frost. One of the significant drawbacks of this material is its fragility, as the structure of polyethylene destroyed by how sunlight and weather (which is very common in our lane). In addition, the surface of the film collects condensate, which increases the likelihood of plant diseases. Of course, in winter This design requires complete disassembly.
Traditional glass material blade brown bags and boxes 2 download to cover greenhouses - glass. An important blade brown bags and boxes 2 download advantage of this material - svetopropusknaya high resolution (usually because it goes to 84% of the light). However, this property is a disadvantage, in the summer glazed surface, however, the main source of excess solar radiation. For example, 10 kv.m.zvychaynoho glass gets about 6000 watts of excess heat. Glass Greenhouses different durability, ease of maintenance of cleanliness. However, shortcomings missing: glass easily beats, broken glass can cause serious injury when subsidence glass breaks easily, and high thermal conductivity results in significant heat loss and can adversely affect the health of plants. In addition, glass greenhouses - a very time-consuming blade brown bags and boxes 2 download task, and heavy weight sheets dictate high requirements for strength and stiffness of the frame.
Cellular polycarbonate Recently more and more popular with gardeners use polycarbonate. Polycarbonate - a solid two-layer transparent plastic, the strength of which is 200 times higher glass at a much lower weight. This unique feature allows light delicate design without many as in other cases supports. Cellular polycarbonate blade brown bags and boxes 2 download has a high light transmission (82% at a thickness of 4 mm) and low thermal conductivity. A charunkova sheet structure can significantly reduce heat loss. In addition, due to its cellular structures such panels 8 times better than glass and scatter light, which provides coverage of all plant parts. Polycarbonate sheets features and high impact resistance, which persists even at temperatures down to -60 C. greenhouses covered blade brown bags and boxes 2 download with this material, not afraid of snow nor hail, nor cast a stone. blade brown bags and boxes 2 download However, one should take into account the high wind loads and heavy snowfall. To protect against these weather events it is useful to pre-install design blade brown bags and boxes 2 download to uphold and strengthen the foundation for the winter. Another argument, not the last, for this material if you choose polycarbonate, your greenhouse will look very modern and attractive and can be a real decoration blade brown bags and boxes 2 download of the site.
Other Input Devices automatic ventilation of greenhouses Double greenhouse for tomatoes and tomato Growing strawberries in greenhouses


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