S410 : Department of water and soil evaluation of spatial variability of soil phosphorus by geostatistic method in kharturan region in semnan province
Thesis > Central Library of Shahrood University > Agricultural Engineering > MSc > 2014
Authors:
Abstarct: Phosphorus is one of the required elements of a plant; this element is involved in all biochemical processes, energetic compounds and energy transfer mechanisms. Unlike nitrogen, the characteristics like phosphate compounds are relatively insoluble and usually small quantities of phosphorus in soils and its tendency to react with the components of an integral solution, resulting in relatively insoluble compounds for the plant soil phosphorus in using it as the utmost important fertility. Due to the high complexity and spatial variations in soil using geostatistical methods for estimating soil properties is essential in non-sampled areas . In this study, a systematic grid sampling method and 30-0 cm and depth of 60-30 meters below the surface of land of Khartouran district and 120 samples were taken at each point of latitude and longitude determined using a GPS device. In the soil, phosphorus and soluble phosphorus and total phosphorus parameters, electrical conductivity, PH and the amount of Hg were measured. Statistical analysis was performed for all the results and to evaluate the correlation between variables, Pearson's correlation coefficient was used.
Via using the statistical analysis software SPSS, the normal distribution of the data was then tested after that using ArcGis software checked the desired data elements and data processing was the best theory to experimental data. According to results ,the ordinary kriging model, simple separator, to estimate the values of the corresponding element of the unknown elements involved and the zoning map was produced in GIS environment. The results showed that all the sampled areas are somewhat limited at high P, or the toxicity is. It is recommended that the application of phosphorus fertilizer on land in the area should be avoided.
Keywords:
#Phosphorus #soluble phosphorus #total phosphorus #geostatistics Khartouran
Keeping place: Central Library of Shahrood University
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Keeping place: Central Library of Shahrood University
Visitor: