FIELD: crop production.
SUBSTANCE: means of regulating air and soil temperatures in greenhouses, moistening the soil, creating a cooled air layer that separates plants from the hot air of the upper part of the greenhouse used in growing fruits and vegetables and other plants. The air duct system for creating favorable conditions for growing plants in a greenhouse with regulation of air and soil temperatures contains an air intake device with perforations located in the upper part of the greenhouse, having an L length, air distribution units connected to above-ground air ducts, which are connected to perforated soil air ducts. The latter consist of two separate parts, the inputs of which are connected to the above-ground air ducts, and the outputs are connected to the outlet pipes, which are located in the middle part of the greenhouse. At the outlet pipes, air pumping devices are installed, equipped with devices for forming horizontal fan jets, made in the form of fan heaters. The air intake device is made in the form of two separate air intakes, each of which is equipped with a corresponding air distribution unit. The air intakes have L1 and L3 lengths and are located along the length of the greenhouse at an L2 distance from each other, equal to the difference between the L length of the greenhouse and the sum of the lengths of the L1 and L3 air intakes. The total area of the front entrances of the air intakes in a section perpendicular to their axis is equal to the value obtained by multiplying the ratio of the total area of the perforations to the length of the air intake, calculated and equal for both air intakes, by the L2 value.
EFFECT: improving the efficiency of the greenhouse, reducing the labor and material intensity of production, reducing gas-dynamic losses while maintaining the volume of pumped air, as well as increasing the insolation of the beds.
1 cl, 3 dwg, 3 ex
