SU1246912A1 - Method of washing salind land intended for planting perreivial crops - Google Patents

Description

The invention relates to agriculture, in particular, to land reclamation, and can be used in the separation of medium and strongly saline soils of mechanical soil for vineyards and other perennial plantations.

The purpose of the invention is to increase the efficiency of the method by desalinizing the root-habitable layer of soil and reducing the consumption of washing water.

FIG. 1 and 2 shows a diagram of the area to be washed (top view); in fig. 3 - washable section, section A-A in FIG. 2

The method of flushing saline lands winds up permanent deep drains 1, temporary shallow drains 2, irrigation canal 3 for water supply, cut perpendicular to temporary fine drains of the slit 4, excavation of inlet channels 4, embankment of inlet channels 6.

Example. In the proposed method, temporary drains with a depth of 0.8–1.0 m were cut with a KM-1400 digger parallel to the deep drains at a distance of 50 m from each other. In the area between the temporary and deep drains, shells were cut across 1.5 meters perpendicular to them. Then, perpendicular to the slits and parallel to the drains, the supply channels were cut through 3 meters (according to the expected planting of perennial crops). Washing was carried out by pressing a 20-30 cm layer of water over the embankments of the supply channels.

According to the method, a deep sweeping of the area was first carried out, then the transverse rollers were cut and perpendicular to them, parallel to the deep drains, temporary drains were cut after 25 m.

During the flushing period, 12.4 thousand m / ha of washing water was supplied to the area (according to the proposed method, and 1.0 thousand M / ha to the area according to the known method. The soil desalinization course is given in the table.

As can be seen from the table, the desalinization efficiency of the root zone in the proposed method is higher than in the known method. The difference in the leaching rate between the | with adjustable variants is 1,400 M Vra. It is established by calculation that if, according to a known method, the same leaching rate was applied as in the proposed method, i.e. 12.4 thous. (G / ha, the residual salinization of 1.0, 1.5 and 2.0 m of overnight soil would be 0.487, 0.585, and 0, respectively, for the dense residue. So from 1.0, 1.5, and 2.0 m of the soil layer would remove, respectively, 36.4, 57.1 and 76.0 t / ha of salts, which, with an equal leaching rate, is 2.5 times less.

Thus, according to the method, the washing water is more efficiently used.

the removal of salts from - 2 m of soil layers is 8-15 kg / m, whereas in the known method it does not exceed 3-4.5 kg / m.

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Claims (3)

1. METHOD FOR RINSING SALTED LANDS UNDER LANDING OF PERENNIAL CROPS, including the device of permanent horizontal deep drains, cutting of temporary drains parallel to deep drains, water supply to the surface of the washed area with subsequent drainage of mineralized waters with deep and temporary drains, characterized in that with the aim of increasing the effectiveness of the method due to the desalinization of the root layer of the soil and reduce the flow rate of wash water perpendicular to the temporary drains after 1-2 m cut cracks to the depth of the root root layer, and between temporary drains parallel to them cut channels 0.6-0.7 m deep. 2. The method according to π. 1, characterized in that a constant layer of water of 20-30 mm is maintained above the embankments of the channels during washing. 3. The method according to π. 1, characterized in that, in order to create _a more favorable environment for perennial crops, SS channels cut in the locations of future plant rows. figure 1