FIELD: agriculture.
SUBSTANCE: invention relates to the field of agriculture. The method comprises the procedures to obtain information about the physical properties, chemical composition of the soil and weather conditions on the agricultural field, as well as information about the actual yield of the previous year on each part of the agricultural field, compared to the signals of the system of determining the spatial coordinates at the time of harvesting, the use of mathematical models of the influence of soil and climatic factors on the final yield, production of calculations on the parameters of main technologies before sowing plants and carrying out of technological impacts in real time in accordance with these calculations for each part of the agricultural field. Before the start of the vegetation period the optimal program of changes of the plant development indicators average in the field and the parameters of the soil environment is determined by finding the maximum of the parameters of technological operations of the optimality criterion, taking into account the difference between the cost of the crop and the cost of its preparation. In real time at the working pass of the agricultural machine with tools its spatial coordinates are measured, the signals from the meteorological station on the ambient temperature, the level of solar radiation, the precipitation intensity is periodically recorded. According to the measured information the parameters of models of plants and the soil environment are precised, the measured values of the parameters of the plant development and the parameters of soil environment are compared for each part of the field to their optimal average values, according to the results of comparing the corrections to the average optimal values of parameters of technological impacts are formed. For each fragment of the field the size of the overall technological impact is determined, which is created from the optimal average and local correction, which is transmitted by the modem connection in the form of the task to the on-board controller of the machine tool, which carries out the technological impact. The information about the physical properties, chemical composition of the soil and plants is received by periodic sampling on test sites located next to the main field, on which the same culture is cultivated as on the main field, and which differ from each other by different fixed levels of irrigation and doses of mineral fertilizer applications and regulators of growth and development of plants. Simultaneously with the sampling on the test sites by means of aircraft remote sensing the multispectral images of the test sites and the main field are formed, according to the resulting spectral information and the selected samples the mathematical model of the optical measurements is precised, which reflect the connection of condition of the crops and the soil environment on the test sites with the parameters of reflection in all the used spectra, on the spectral information obtained over the entire area of the main field, the condition of the crops and the soil environment on the main field is assessed using the mathematical model of the optical measurements for each time of measurement, according to the obtained estimates and signals from the meteorological station on the ambient temperature, the level of solar radiation and the precipitation intensity the parameters of mathematical models of conditions of crop and soil environment are precised, on which the optimal program of changes of the plant development indicators and soil environment parameters mean in the field are then precised in real time. When working passes of the technological machines simultaneously with the measurement of the spatial coordinates the multispectral pattern of the entire area of the main field is repeatedly formed, on which with the predetermined pitch the condition of the crops and the soil environment is assessed, the resulting estimates on individual parts of the field are compared to their optimal average values obtained during the formation of an optimal program of change of the plant development indicators and soil environment parameters mean in the field. By comparing the results the corrections are formed to the average optimal values of parameters of technological impacts, and for each part of the field the amount of the overall technological impact is determined, created from the optimal average and local corrections in a given spatial coordinate.
EFFECT: method enables to increase the amount and reliability of the process of yield formation while substantial reducing the amount of manual labour.
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