Methods of Laboratory Studies of the Star Draining Tillage Working Body

At the moment, the issue of creating and positioning tools for deep loosening of the subsurface layer and the formation of aeration drainage has been studied in detail. The modern market offers many different tools for deep loosening or moling, but according to the analysis of machines and tools, as well as promising developments presented in the form of patents, we can say that there are no systems capable of performing deep loosening and drainage operations together. (Research purpose) The research purpose is in creating a fundamentally new star-shaped design of a draining tillage working body that will be able to form an optimal water-air regime of the soil due to the formation of maximum aeration drainage per unit area, with simultaneous loosening of the subsurface horizon, excluding over-compaction of the near-drainage zone as part of the soil-forming system. (Materials and methods) To simulate the operation process, predict and identify the optimal parameters and operating modes, as well as to bring the developed working body to field testing, it is necessary to conduct a number of laboratory experiments and studies. The article presents the scheme of the laboratory installation and described the principle of its operation. (Results and discussion) The article presents a full factor experiment with three factors and three levels of variation in three-fold repetition to assess the influence of existing factors on the operation of the star-shaped drainage working body, the quality of the treatment of the subsurface horizon and the formation of drains, the interaction of factors with each other, as well as creation a mathematical model of the process of combined tillage, including the processes of deep loosening and aeration drainage. (Conclusions) The proposed method will allow us to more accurately and systematically identify the optimal parameters and modes of operation of the body, based on changes in the optimization parameters.