WATER CIRCULATING COMBINED IRRIGATION SYSTEM Russian patent published in 2018 - IPC E02B11/00 

FIELD: agriculture.

SUBSTANCE: invention relates to the field of agriculture and will find application in the melioration of light sandy and sandy loam soils formed on underlying clay soils in the absence of the possibility of draining drainage. Water-circulating drainage-humidifying system includes a network of drains associated with a drainage manifold equipped with a transfer pump and associated with a drainage drainage reservoir. Drains are laid with a zero gradient relative to the drainage manifold, and the drainage drainage reservoir is made in the form of vertical waterproof storage pits with perforations in the upper part to the depth of the drained soil layer, connected by non-discharging siphons and located above the drained area from the side of the prevailing bias of the terrain. Water intake and pressure lines of the transfer pump are equipped with water distribution units, each of which is connected through a shut-off valve with a drain collector and the nearest drainage wells. Proposed system allows to collect and accumulate drainage waters during their excessive accumulation on the drained site, and if there is a moisture deficit in the root layer of the soil, use the accumulated water for irrigation by the method of sub-irrigation, without building an additional irrigation network.

EFFECT: absence of the need to construct a storage pond increases the coefficient of land use of the system.

1 cl, 4 dwg