Abstract
The aim of the research is to determine the agro-technical characteristics of the day surface of tilled soil on sloping agricultural landscapes by applying the method of accurate ground scanning along the circumference. The specific difficulties that arise in developing and implementation of agro-technical measures are often associated with significant change of the main parameters of the day surface of tilled soil depending on space and time. Agro-technical parameters according to the agro-technical requirements for the main and pre-sowing tillage, the direction and value of the average slope of the soil surface, as well as the lumpiness and cloddiness of the tilled day soil surface are determined while controlling. According to the results obtained using the developed software, it was found that the deviation angle of the projection of the line of the maximum change in height from the direction of the tillage machine movement is α=-32.4 and the slope of the studied site is 4.8 degrees. The aggregates of 1-4 centimeters in diameter are prevailing in quantity that is crumbling is ensured. The weighted average diameter of the lumps was 4.07 cm, and the standard deviation was 5.05 cm.
Highlights
The specific difficulties that arise in developing and implementation of agro-technical measures on sloping agricultural landscapes are often associated with significant change of the main parameters of the day surface of tilled soil depending on space and time
To carry on experimental studies on slope lands, a method for determining the profile of the day soil surface along the circumference has been developed [12] to establish the agrotechnical parameters of the day surface of the tilled soil on an elementary site in the field, as well as profilographs for its implementation, taking into account the works [2, 8, 12]
The developed technical means of control were used in agro-technical studies of the day surface of tilled soils on the territory of «Orinino» agricultural complex in Morgaushy district of the Chuvash Republic
Summary
The specific difficulties that arise in developing and implementation of agro-technical measures on sloping agricultural landscapes are often associated with significant change of the main parameters (average slope, lumpiness, cloddiness) of the day surface of tilled soil depending on space and time.The most popular methods for obtaining information about the underlying surface used in Russia and foreign countries are: profiling, stereo photography, shadow method, laser scanning, circuit and acoustic scattering method [1,2,3,4,5]. The specific difficulties that arise in developing and implementation of agro-technical measures on sloping agricultural landscapes are often associated with significant change of the main parameters (average slope, lumpiness, cloddiness) of the day surface of tilled soil depending on space and time. Statistical processing of actual data obtained from a distance sensor moving along the circumference in a horizontal plane allows us to determine a number of parameters of the tilled surface: - value of slope; - deviation of the projection of the line of maximum change in height (by which the slope is measured) from the direction of the tillage machine movement. The review of the known technical means of control of the underlying surface in [6,7,8,9,10,11] allowed us to note the following: the considered technical means do not provide the acceptable accuracy of measuring the unevenness of the underlying surface and violate the technological shape of lumps and aggregates on the soil surface; a number of technical means of control are bulky and inconvenient for use in field conditions; using some tools, it is not possible to determine and record the measured parameters of the underlying field surface at the same time.
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