Agroecological assessment of the technology of processing ordinary chernozem deposits in the south of Central Siberia

Relevance. In the arid steppe zone, strong wind, weak water erosion and other adverse phenomena are manifested. Similar processes are observed in Siberia. At present, the re-development of deposits is beginning and soil degradation is again manifested in the steppe regions of the Republic of Khakassia. For the effective use of land resources, it is necessary to develop a soil protection technology for soil treatment of deposits in the steppe foothill zone of the south of Central Siberia.

Methods. The study of the effectiveness of soil treatment technologies of the erosive agroecological group of fallow lands was carried out in the Baysky foothill steppe soil-geographical agrolandscape region of the Republic of Khakassia, located in the south of Central Siberia. Research for three years was carried out in the link of crop rotation: a four-year–old grain–grass deposit — buckwheat — buckwheat by the method of field experience of Boris Dospekhov. Mеthods of water-physical, agrochemical, economic and energy research were used in the performance of the work.

Results. It was revealed that on four-year fallow lands there is soil compaction, low content of elements of mineral nutrition. The influence of the complex application of continuous herbicides (Tornado 500) and soil tillage technology on erosion resistance has been established. During summer tillage of the deposit and timely application of herbicide, there is an increase in wind resistance and productivity of the crop rotation link. In the foothill steppe region, with such a soil protection technology with the treatment of ordinary chernozem, the erodibility is 27.5–30.9 g / 5 min of exposure.

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