INVESTIGATION AND ANALYSIS OF TRACE ELEMENTS INFARMLAND SOIL IN SHANGHE COUNTY SHANDONGPROVINCE

摘要

The content of nutrient elements in the soil is closely related to the yield and quality of crops. This study based on the content of 32 elements tested by X-ray diffract meter in 37 soil samples in Shanghe County, Shandong Province. We analyzed the range and spatial distribution of soil nutrient elements. Ac- cording to theoretical model of half variance func- tion, the Nugget Coefficients of As, Cu, MgO, and Pb are greater than 25%, indicating that these ele-ments are affected by both natural factors and ran- dom factors (human factors); the nugget coefficients of other elements are all less than 25%, indicating that these elements are mainly affected by natural factors. The average content of CaO and Zn is rela- tively abundant: Fe203, Cu, and Mn are at medium level; MgO and S are at rich level. The variable range between the elements is between 1.715 and 17.946 km, indicating these elements have spatial autocor- relation in this range. There is a certain degree of cor- relation between the six elements that are mainly studied. This study aims to apply the survey results and combine the previous management experience and measures to provide corresponding fertilization measures for Shanghe County to increase production and quality.