METHOD FOR FOREST RECLAMATION OF SALINE LANDS AND THE SYSTEM FOR ITS IMPLEMENTATION Russian patent published in 2022 - IPC A01G23/00 A01G25/06 

FIELD: agriculture.

SUBSTANCE: inventions group relates to the field of agriculture. The method includes pumping salt water from a water source into a solar evaporator, supplying preheated air to it, pumping air saturated with moisture vapor from the solar evaporator through pipes laid in the ground to obtain desalinated water upon condensation of steam, and irrigating the root system of trees with it through perforated pipes-irrigators. On saline lands, a trench is torn off along the tree planting line, the walls and bottom of which are covered with a membrane film. Perforated irrigation pipes are laid at the bottom of the trench, after which the trench is filled with saline soil, forming a ridge 0.25-0.30 m high above it by moving soil from adjacent areas. Then, on the territory adjacent to the tree planting zone, pipes are laid in the ground - steam condensers, one end of which is connected to a solar evaporator of salt water, and the other - to a reservoir of desalinated water, which is pumped through perforated pipes-irrigators into the soil within its volume limited by the membrane film. The water supply is carried out until the salt content in this volume of soil drops to the standard level, after which the water supply is stopped. The soil from the ridge with salts displaced into it is leveled in the adjacent areas, and trees are planted in the washed soil and they are irrigated with desalinated water from storage tanks through perforated irrigation pipes. The system includes a source of mineralized water, water supply and distribution pipelines, a solar salt water evaporator, an air heater, perforated sprinkler pipes and an air exhaust device. The steam condensers are made in the form of a block of watertight pipes with a diameter of 63-110 mm, laid in the ground parallel to the tree planting lane in the adjacent territory in the zone of the capillary fringe of groundwater at a depth of 2.5-3.0 m with a slope of at least 0.003. At the same time, one ends of these pipes are connected by a collector connected to a solar salt water evaporator, and the other ends are connected to a desalinated water collector equipped with an air exhaust device and placed in a desalinated water storage tank, where a pump is mounted, the discharge pipeline of which is led into a well installed in the head parts of the water distribution pipeline connected to perforated irrigation pipes with a diameter of 20-25 mm, covered with a synthetic material filter and laid in sandy backfill in trenches 0.5-0.6 m deep, 1.5-2.0 m wide, with a slope bottom not less than 0.003, the bottom and walls of which are covered with a membrane film.

EFFECT: inventions make it possible to grow trees and shrubs on saline soils in the absence of fresh water sources by using desalinated water obtained from saline groundwater using solar energy for washing the soil and subsequent irrigation of trees.

2 cl, 5 dwg