METHOD FOR INCREASING SOIL FERTILITY UNDER FORECAST CROP YIELD Russian patent published in 2020 - IPC A01C21/00 A01G7/00 C05G1/00 

FIELD: agriculture.

SUBSTANCE: invention relates to agriculture. Method comprises analysis of soil productivity taking into account abiotic factors by sampling soil for analysis, determining content of agrochemical indicators, determining factors of agroclimatic resource of the given territory, affecting crop capacity: photosynthetic active radiation (PAR), moisture supply, bio-hydrothermal potential (BHP), bioclimatic potential (BCP), determination of crop capacity of the selected crop depending on external and soil medium by formula:

where: C - crop by the sum of i^th factors; n is number of factors taken during crop calculation; i - factor influencing crop yield and yield increment - humus, phosphorus, potassium, acidity, microelements - indicators from agrochemical analysis of soil; Ci₁ - crop ensured by i-factor soil fertility indicators; Ci₂ - crop increment provided with additional i-factor; a_i is the soil acidity effect correction factor, plotting the nomograph in form of a graph, selection for a specific crop according to a nomogram of a predicted crop index, placing a ruler on the nomogram and determining a required dose of fertilizer, wherein the fertilizer dose for the crop is set taking into account the provision of nutrients to the soil, calculating the yield gain of 1 t/ha of the crop, the main soil nutrient indices being humus, phosphorus and potassium.

EFFECT: method ensures increase of soil fertility under forecast crop yield.

1 cl, 9 dwg, 1 tbl, 1 ex