Today in our country there is a very short time for sowing crops, the lack of technical means of tillage, sowing of existing techniques (disc harrow, plow, chisel, cultivator, etc.). It is not possible to use these areas efficiently as they cannot carry out all the technological processes in one pass. The development of resource-saving technologies for replanting crops with minimal tillage in grain-free fields and maximum retention of available moisture in the soil on hot summer days is a topical issue. The quality of machine work at tillage is determined by the tillage depth, the flatness of the field surface, the quality and density of soil compaction and the degree of weed loss. The average depth of tillage in the fields prepared for sowing should not differ by more than 1 cm from the indicator set by the agronomist, the average square deviation of field surface irregularities should not exceed 2 cm, the amount of soil particles smaller than 25 mm should be at least 80%, size 50 pieces larger than mm should not be present at all. In fulfillment of the above requirements, several models of agricultural machinery are imported from abroad and used in the conduct of agricultural work in our country. One of such imported cars is disk harrows. Today, disc harrows have spherical disc work bodies of various types and sizes, and when used depending on soil climatic conditions, their discs are subject to frequent wear and tear due to friction with the soil. This article presents an analysis of the use of disc harrows in different soil-climatic conditions, the erosion caused by soil friction with discs, and the development of an economical, efficient, farmers' method of their restoration.
| № | Author name | position | Name of organisation |
|---|---|---|---|
| 1 | Ishmurodov S.U. | Katta o'qituvchi | TDTU |
| 2 | Khudoyberdiyev M.S. | Assistant | TDTU |
| 3 | Abdumajidov R.B. | O'qituvchi | TDTU |
| 4 | Kravchenko L.V. | O'qituvchi | Don State Technical University |
| № | Name of reference |
|---|---|
| 1 | 1. Resolution of the President of the Republic of Uzbekistan dated December 26, 2016 No PP-2698 "On measures to further implement promising projects for the localization of production of finished products, components and materials in 2017-2019." |
| 2 | 2. Decree No. PF-4947 of February 7, 2017 "On the strategy of further development of the Republic of Uzbekistan." |
| 3 | 3. Resolution No. PP-3117 of July 7, 2017 "On measures to further develop the scientific andtechnical base in the field of agricultural machinery." |
| 4 | 4. Resolution No. PQ-3751 of May 29, 2018 "On additional measures to increase the efficiency of mechanization and maintenance of agricultural producers." |
| 5 | 5. Resolution No. PQ-4268 of April 4, 2019 "On additional measures for the timely provision of the agricultural sector with agricultural machinery" to establish the development of import-substituting export-oriented products, ensure the integration of science and industry in the field tasks such as further acceleration of research work and ensuring their efficiency, financing and introduction into production of projects that can cover their own costs. |
| 6 | 6. Tokhtako'ziev A., Ergashev M.M. Combined disk storm // Integration of science and industry is an important factor in agricultural efficiency: Collection of articles of the Republican scientific-practical conference.– Samarkand: SamQXI, 2013.–p.145-147. |
| 7 | 7. Tokhtako'ziev A., Kalimbetov MP, Ergashev MM Substantiation of parameters of combined hurricane disk working bodies // Scientific and technical journal of Fergana Polytechnic Institute. - Fergana, 2013. - №1. - p.27-30. |
| 8 | 8. Ergashev M.M. Device for studying the parameters of combined disk storms // Ecological aspects of rational use of land and water resources in irrigated agriculture: Collection of materials of the Republican scientific-practical conference.– Bukhara:: TIMIBF, 2014. –p.264-265. |
| 9 | 9. Tokhtako'ziev A., Tojiev R.J., Ergashev M.M. Study of the height of irregularities in the bottom of the layer treated by a combined disc storm // Scientific and technical journal of Fergana Polytechnic Institute. - Fergana, 2016. - №2. - p.37-39. |
| 10 | 10. Ergashev M.M. Substantiation of the parameters of the disc softener // Agro ilm. – Tashkent, 2017. – №5 (49) .– p.96-97. |
| 11 | 11. Tokhtako'ziev A., Ergashev M.M. Substantiation of transverse and longitudinal distances between the working bodies of the combined disc harrow // Agro ilm. – Tashkent, 2017. – №6. – p.93-94. |
| 12 | 12. Tuktakuziev A., Ergashev M.M. Researching the uniformity of disk harrow running throughout the tillage depth // Scientific Journal. European science review.– Vienna, 2017.–№11-12.–Р. 150-153. |
| 13 | 13. Staffed J.V., Geikie A. Implement configuration to loosen soil by inducing // Soil and Tillage Restarch, 2007.– V.9–№4.–рр. 21-24. |
| 14 | 14. Gill,W.R., Reaves, C.A. and Bailey,A.C.(1981). “The influence of harrow disc curvature on forces”, Transaction of the ASAE. Vol. 24. No. 4. –рр. 579-583. |
| 15 | 15. Sarauskis, E., Romaneckas, K., Sakalaukas, A. Theoretical analysis of interaction of disc coulters and straw residues under no-tillage conditions // Agronomy Research.– Estonia, 2013.–11(1), – pр. 89-96. |
| 16 | 16. Godwin,R.J.,Seig,D.A. and Allott,M. (1987). “Soil failure and force prediction for soil engaging discs”, Soil use and management, Vol. 3, No. 3.–рр. 106-114. |