Method to increase water stability of soil structure

FIELD: agriculture.

SUBSTANCE: method consists in application into the soil of a modifier - polyoxyethylene (20) sorbitan monolaurate.

EFFECT: invention enables to improve water stability of soil structure due to increasing the microphase separation in suprapolymer humic matrix, while reducing the application of the dose of modifier.

1 tbl, 1 ex

 

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

The known method of increasing vodoprochnost 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 vodoprochnost 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 known method of increasing vodoprochnost soil structure by making kilimov - products derived from methacrylic and acrylic acids [1].

The main disadvantage of this method is the necessity of making a sufficiently high doses of kilimov more than 500 kg/ha

The aim of the invention is to increase the efficiency of use of modifiers to improve the water resistance of soil structure and improving the performance of the method.

The technical essence of the invention lies in the fact that in the soil making m is defecator - polyoxyethylene (20) sorbitan monolaurate, reinforcing microphase separation in supraliminal humus matrix that is responsible for photoproject soil structure.

The problem is solved in that in the method of increasing vodoprochnost soil structure, which consists in introducing into the soil modifier, modifier use polyoxyethylene (20) sorbitan monolaurate.

The proposed method can significantly improve the efficiency of use of modifiers to improve vodoprochnost soil structure.

The following example reveals the essence of the invention.

Example 1.

To determine the water-stability used air-dry aggregates of sod-podzolic soil with a size of 4.5-5.0 mm aggregates batcher was added to 10 μl of water. After that, the units were kept in a desiccator with a relative vapor pressure of water ~ 100% within 2 days. Then hydrated every unit added to 10 μl of the solution of polyoxyethylene (20) sorbitan of monolaurate various dilutions and kept at 100% humidity for another day.

To determine vodoprochnost put soil aggregates into the cassette and a height of 6 mm, a cell diameter of 6 mm to the lower part of which was attached a wire diameter of 1 mm, which divides the cell in half and the supporting soil aggregates. The cartridge (it is adrat 8x8 64 cells) was placed in the ULTRASONIC bath, which was filled with water. Determination of water-stability was carried out according to the method Andrianova when exposed to the ultrasound system by calculating photoproject (waterproofness) Kachin [2].

The terms of the concentration of the modifier, expressed in mg/ml, at a flow rate in t/ha was performed, based on the weight of the studied aggregates, the concentration of the applied solution, the density of the soil 1,2 t/m3and the topsoil, water resistance patterns which provided a depth of 25 cm

Table 1.
The effect of consumption polyoxyethylene (20) sorbitan of monolaurate on the water stability of aggregates of sod-podzolic soil.
No.Consumption, polyoxyethylene (20) sorbitan of monolaurate, kg/haThe water stability of soil aggregates, %
120090
215080
310065
45060
050

Photoproject aggregates of soil was 88-90%.

The obtained results show that photoproject corresponding to the prototype, occurs when making 150-200 kg/ha

By the well-known decision you need to make more than 500 kg/ha

Thus, the present invention allows to significantly improve the efficiency of the use of modifiers to improve vodoprochnost soil structure, reducing the necessary dose of application, thereby improving the performance of the method.

Literature

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

2. Kachin N.A. Physics soil. B1. - M.: Higher school, 1965, s-312.

The way to increase vodoprochnost soil structure, which consists in introducing into the soil modifier, characterized in that as a modifier use polyoxyethylene (20) sorbitan monolaurate.



 

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2 tbl, 16 ex

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