LIZIMETER Russian patent published in 2018 - IPC G01N33/24 G05D9/00 

FIELD: agriculture.

SUBSTANCE: invention relates to devices used in agriculture for balance research on reclaimed lands, in particular, for determining infiltration irrigation, thawed and sprinkling water. Lysimeter includes container (1) with a soil monolith, connected with vertically installed container (6), tray (5) and water level controls. Vertically mounted vessel (6) is divided into measuring container (9) and drainage well (10) by partition (8), in the middle part of which hole (11) is made in the form of an opening overlapped by shield (12). Shield (12) is equipped with device for discharge of water in the form of siphon (15), descending line of the siphon is brought to drain well (10) towards the head of the outlet of closed header. Siphon (15) is fixed inside the hole in shield (12), made with possibility of vertical limited movement relative to opening (11) in baffle plate (8). Vertically installed container (6) is hydraulically connected to container (1) tray (5) with the soil monolith. Lysimeter is provided with drainage tube (16) adjustable valve (18), one end of which is hermetically passed through shield (12) to the descending branch of siphon (15) and pointing upwards to its bend, and the second to measuring container (9) and is located below the ascending branch of the siphon. Ascending branch (23) of the device in the form of siphon (15) is equipped with L-shaped lever (22), in the middle part of which two-arm lever (19) is articulated, on one arm of which shut-off device (17) is fixed, and on the other arm – float (20).

EFFECT: invention provides convenience and stepless adjustment of the lysimeter parameters for each taken crop and a program of dumping water into the drainage well, improves the accuracy of calculating the irrigation regime and allows expanding the scope of application for water accounting for irrigation or sprinkling.

4 cl, 1 dwg