Process modeling of the first inter-row cultivation in laboratory conditions

Evgeny Zykin,Oleg Dmitriev,Vladimir Kurdyumov,Svetlana Lazutkina,S Bratan

doi:10.1051/e3sconf/202019301041

Abstract

The paper considers the formation process of secondary soil ridges by working bodies with flat discs during the first mechanized interrow cultivation of crops in laboratory conditions. Taking account of the agrotechnical requirements and the physical and mechanical properties of the soil, we adopted the reference profile of the soil ridge formed during mechanized inter-row cultivation of crops, which can conditionally be accepted as ideal, as well as the original optimization criterion kсэ1 . After practical implementation of studies in the tillage bin and statistical processing of the obtained data, the corresponding equations were obtained in which the independent process factors were expressed in natural and encoded values. It was found that a change in the speed of a cultivator within 1.2 2.4 m / s, with angles of attack>кk of flat discs from 5º to 20º, increases the distance at which the soil is thrown off and the thickness of the soil layers covering the sides and the upper base of the primary ridge (kсэ1 → max). At angles of attack>кk of flat discs within the limits of 25º ... 30º and the speed of the cultivator from 1.2 m / s to 1.6 m / s, an increase in the thickness of the covered soil layers hпр, occurs, and the coefficient kсэ1 is maximum ((kсэ1 = 0.98 with a flat disc diameter of 0.3 m).

Highlights

At present, the method of mechanized row crop weeding is complemented with a chemical one - treatment with selective herbicides or a combined one – the application of mechanical and chemical methods [1, 2, 3, 4, 5, 6, 7]
A working body of a cultivator with a flat disc mounted on a domestic or imported interrow cultivator is proposed for mechanical weeding of row crops with the use of ridge technology
The study of the working bodies with flat discs with a diameter of 0.3 m (Fig. 6 c) allowed us to find that a change in the speed vк of the cultivator within 1.2 ... 2.4 m / s, with angles of discs from 5o to 20o, increases the distance of throwing off the soil and the thickness hпр of the soil covering the sides and the upper base of the primary ridge ((kсэ1 → max)

Summary

Introduction

The method of mechanized row crop weeding is complemented with a chemical one - treatment with selective herbicides or a combined one – the application of mechanical and chemical methods [1, 2, 3, 4, 5, 6, 7]. The analysis of the methods for calculating the estimated indicators of technical means of inter-row cultivation of crops by ridge technology showed that in theories of determining the geometric dimensions and surface shapes of working bodies in inter-row cultivators, there are currently issues that have not been resolved. The data obtained from the studies conducted by many scientists cannot be applied to new working bodies with flat discs in inter-row cultivators. Additional theoretical and experimental confirmation of the optimal structural and operational parameters of the cultivator working bodies mentioned above is required [8, 9, 10]

The study objects and research methods

Research results

Discussion

Conclusion