Greenhouses

hotbeds are small structures of protected ground, with a side guard made of wood, bricks or other material, and a translucent roof made of glass or film. The hotbeds subdivide into deep with biomass heating and ground on solar heating. Both in-depth and above-ground greenhouse can be single-pitched or gable. Dimensions of the greenhouse are arbitrary. To extend the term

surface greenhouse The terrestrial greenhouse box is usually installed on an aligned platform on the soil surface, but for a more stable construction, the bottom of the box can be sunk into the ground for 10 cm.

The optimum size of the greenhouse, as practice shows, is 100 x 150 cmthree frames. When the greenhouse is ventilated, one frame is slightly opened and fixed with a wooden stop

, the frame services are impregnated with linseed oil, and then painted with white paint. The single-skinned recessed hotbed with hot biofuel heating consists of a pit filled with biofuel, frame and frames. The pit is dug 50-60 cm deep, 150 cm wide at the base with a width of 130-140 cm in the direction from east to west, so that the ramp is facing south. Along the northern and southern sides of the pit, logs, thick boards or other building material are laid to create walls called parabens, fastened at the ends and in the middle in a transverse direction by boards or logs.

The northern pair make above the southern one by 15-20 cm to create a certain slope of the greenhouse frame. To prevent the frames from slipping, a groove is made at the southern pair or nails are brushed 3 cm thick. Frames( 160 x 106 cm) are laid long side across the greenhouse. The length of the greenhouse is arbitrary and depends on the number of frames. The greenhouse frame provides certain thermal and light modes. A standard greenhouse frame with a length of 1b0 and a width of 106 cm consists of a wooden band and glass, instead of which a transparent polyethylene film is often used. For additional warming of the greenhouse, straw and reed mats measuring 200 x 120 cm are used: they are laid on top of the frames. The slope of the greenhouse frame is selected depending on the height of the cultivated crop: for a low-roll, less, for a tomato, more. The single surface hotbed is very simple in a constructive plan and consists of a harness made of boards, plywood, roofing material and frames. Usually it is made from 2-6 greenhouse frames. Of boards with a thickness of 25-30 mm, a box is knocked together, the northern part of which should be 10-15 cm above the south. For strength from inside, nails are punched at the corners, and in the middle - a spacer from the board or rail, with its edge to the length of the box. The box is placed on a leveled soil surface in the direction from east to west and vegetable crops are grown there. It is recommended to install a ground greenhouse on the south side of any structure available on the site, using the wall as a natural protection against cold north winds and as a heat accumulator on the south side.