METHOD OF FOREST RECLAMATION ON SALINE LANDS WITH A DEEP OCCURRENCE OF SALINE GROUNDWATER AND A SYSTEM FOR ITS IMPLEMENTATION Russian patent published in 2023 - IPC A01G25/06 A01G25/16 

FIELD: agriculture.

SUBSTANCE: invention relates can be used in the cultivation of woody vegetation on saline lands with a deep level of saline groundwater. The method consists in the fact that on saline soils along the line of the tree or shrub planting route, a trench is torn off and steam condenser pipes are laid in it, one end of which is connected to a salt water evaporator, and the other to a desalinated water storage tank, the condenser pipes are covered with a layer 0.15-0.20 m of soil, which is covered with a geotextile screen, and a perforated soil humidifier pipe connected to a source of salt water is laid on it, and the trench is covered with soil to a depth of 0.5-0.6 m from the earth's surface, the walls and the bottom of the rest of the trench are lined with a membrane film to the surface, a layer of sand is laid on top of the membrane film at the bottom, in which perforated pipes for subsoil irrigation are placed, connected to a pump installed in a desalinated water storage tank, after which the trench is filled with saline soil to the surface of the site with the formation of a ridge over it. Desalinated water is accumulated in the storage tank due to the formation of steam in the salt water evaporator and its condensation in the condenser pipes. Salt water is fed simultaneously into the evaporator pipe and the perforated soil humidifier pipe. Desalinated water from the storage tank is pumped into perforated pipes of subsoil irrigation with filling the pores of the soil with it in the volume limited by the membrane film. Water is supplied until the salt content in this soil drops to the standard level. After the water supply is stopped, the ridge is leveled, and trees or shrubs are planted in the washed soil, followed by watering with desalinated water from the storage tank through perforated subsoil irrigation pipes. The system for implementing the method includes a source of salt water, an air heater, a salt water evaporator, perforated pipes for subsoil irrigation, coupled with an exhaust pipe, and is equipped with steam condenser pipes made in the form of smooth polymer pipes with a diameter of 63-110 mm, a length of 100-200 m laid with a slope of at least 0.003 in a trench 2.5-3.0 m deep, one end of which is connected to the salt water evaporator, and the other to the desalinated water storage tank. The condenser pipes are covered with a soil layer of 0.15-0.20 m, which is covered with a geotextile screen, and a perforated soil humidifier pipe with a diameter of 25-32 mm, a length of 100-200 m is laid on it, connected to a source of salt water and covered with soil to depths of 0.5-0.6 m from the surface of the earth. The walls and bottom of the rest of the trench are covered with a membrane film to the surface. Perforated pipes of subsoil irrigation with a diameter of 25-32 mm and a length of 100-200 m are laid on top of the membrane film at the bottom in sandy filling, connected through a water level regulator to a pump installed in a desalinated water storage tank. From the sandy filling to the surface of the site, the trench is filled with saline soil with the formation of a 25-30 cm high ridge above the surface.

EFFECT: it is possible to grow tree and shrub vegetation on saline soils in the absence of fresh water sources.

2 cl, 5 dwg