Method to increase water resistance of turf-podzol soil structure

FIELD: agriculture.

SUBSTANCE: prior to application to soil, polyethylene glycol is added into alkaline extract from turf. Alkaline metal ions are replaced with hydrogen ions by means of ion exchange treatment.

EFFECT: increased efficiency of using turf glues to increase water resistance of turf-podzol soil structure.

1 tbl, 1 ex

 

The invention relates to agriculture and soil science, namely to methods of increasing the resistance of soil structure by soil application of different substances.

The known method of increasing the water resistance of soil structure by adding petroleum bitumen [1]. He is in the tillage oil emulsion of bitumen.

The main disadvantage of this method is the necessity of making high doses petroleum bitumen - more than 10 t/ha

The known method of increasing the water resistance of soil structure by adding peat adhesives [1]. He is getting alkaline extraction of peat, its neutralization and processing of this extract of the soil.

The main disadvantage of this method is the necessity of making high doses of peat adhesives - more than 10 t/ha

The aim of the invention is to increase the efficiency of the use of peat adhesives to improve the water resistance patterns of sod-podzolic soil.

The technical essence of the invention lies in the fact that before the introduction into the soil in alkaline extract of peat injected polyethylene glycol, and then carry out the replacement of alkali metal ions for hydrogen ions by ion exchange treatment. It should be noted that peat adhesive is a material on the basis of colloidal particles, which should take enough soil complex is e functions and to have a certain set of properties. Attempt to create such material by processing of peat with alkali, followed by neutralization of the resulting solution leads to the production of peat-based adhesive with a high content of salts. The high ionic strength of the solution shrinks the balls the polymer molecules of humus and causes coagulation. In the ion-exchange processing, the size of the balls of humus by neutralizing peat adhesives decreases slightly, which causes the bridges of these balls between soil particles and increases photoproject soil structure. Modification of peat adhesive polyethylene glycol strengthens formed between the particles of the bridges from the tangles of humus.

The problem is solved by making alkaline extraction of peat, adding polyethylene glycol, its neutralization by ion exchange and inclusion in the soddy-podzolic soil.

The proposed method can significantly improve the efficiency of the use of peat adhesives to improve the water resistance patterns of sod-podzolic soil.

The following example reveals the essence of the invention.

Example

Peat adhesives prepared from lowland peat. Used a solution of 5% KOH at a ratio of peat:CON 1:10. The resulting suspension was boiled for 1 hour, cooled to room temperature, Nasta the Wali for 1 hour and separated alkaline extract from the precipitate by centrifugation.

For the preparation of solutions peat glue with polyethylene glycol to peat glue containing 10-12 mg/ml of humus, added a certain quantity of a solution of polyethylene glycol.

Then spent processing the obtained solution cation exchange resin KU-2 in the H-form.

The content of organic matter in peat adhesives was determined by chemical analysis by well-known methods [2].

To determine the water-stability used units of sod-podzolic soil size 4 mm, In aggregates batcher was added to 10 μl of peat glue modified with polyethylene glycol of various dilutions. After that, the aggregates were dried.

The water stability of soil aggregates was determined by the method Andrianova modification Nagatinskaya [3] in accordance with the invention [4].

Determined the water stability of aggregates of sod-podzolic soil with amendments peat adhesives modified with polyethylene glycol of different concentrations (see table). The terms of the concentration of peat adhesives, expressed in mg/ml, at a flow rate of peat adhesives in t/ha was performed, based on the weight of the studied aggregates, the concentration of the applied solution, the density of the soil 1.1 t/m3and the topsoil, water resistance patterns provided, depth 20 cm

The effect of consumption of peat glue on the water stability of aggregates of sod-podzolic soil
No.Consumption of peat adhesives, t/haThe water stability of soil aggregates, %
12100
21,599
31,296
4
50,723
60,517

The obtained results show that the resistance corresponding to the prototype, occurs when the imposition of 1 t/ha

By the well-known decision you need to make 10 t/ha

Thus, the present invention allows to significantly improve the efficiency of the use of peat adhesives to improve the water resistance patterns of sod-podzolic soil, reducing the required dose of addition of peat adhesives 10 times.

Literature

1. Vershinin P. Is. Soil structure and conditions of its formation. - M.: Publishing house of the USSR Academy of Sciences, 1958, p.148 and 151.

2. Theory and practice of chemical analysis of soils. Edited Laurabell. M.: GEOS, 2006, C-124.

3. Kachin N.A. Physics soil. H 1. - M.: Higher school, 1965, s-312.

4. Fedotov, G., Pozdnyakov A.I. Khan KU Method to determine vodoprochnost soil aggregates. RF patent №2344420, publ. 2009.

The method of increasing the resistance patterns of sod-podzolic soil, which consists in the preparation of alkaline extraction of peat, its neutralization and entry of sod-podzolic soil, characterized in that before the neutralization of the alkaline extract of peat add the glycol, and the neutralization is carried out by ion exchange.



 

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1 tbl, 1 ex

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1 tbl, 1 ex

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1 tbl, 1 ex

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1 tbl, 1 ex

FIELD: agriculture.

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8 cl, 1 ex, 5 tbl

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9 tbl

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3 tbl

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2 tbl, 1 ex

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