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2020, N 1 (39) |
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SOIL SCIENCE
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Chashchin A. |
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Mapping the agrochemical properties of soil using Ordinary kriging |
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The article presents the results of mapping the spatial heterogeneity of humus, the reaction of the environment and mobile phosphorus in the soils of the Vershchaginsky district of the Perm region on the territory of Agricultural Enterprise «Zarya Putino». The purpose of the research is to evaluate the spatial heterogeneity of agrochemical indicators using the geostatistical method of ordinary kriging. The selection of points for selection of places is based on the spectral reflectivity of the soil, the sections of which are highlighted as a result of the classification of the Sentinel 2 satellite image by the K-means method (classification without training). The results of the spatial distribution of agrochemical properties were investigated by histogram, trend graph, and variogram. In the data obtained, a global trend has been identified. The highest autocorrelation was established by the content of mobile phosphorus. The created geostatistical layers are consistent with the terrain features. As a result of mapping, the need for soils in phosphorus fertilizers was revealed.
Keywords: AGROCHEMICAL SOIL PROPERTIES, KRIGING, PERM REGION |