In order to study the soil selenium content in the eastern part of Baoqing County and its relationship with soil properties, the authors collected 17 470 soil samples in the depth of 0~20 cm from the main agricultural areas in eastern Baoqing County according to the density of 4 points/km 2. Physical and chemical indicators such as selenium content, organic carbon and pH were analyzed. The results show that the selenium content in the topsoil is between 0.01×10 -6 and 1.17×10 -6, the average content is 0.326×10 -6, 73.53% of the soil is selenium-sufficient, 21.14% of the soil is selenium-abundant, and 4.56% of soil is of potential selenium-deficiency. Selenium-deficient soil only accounts for 0.77%, and there is no selenium poisoning area. The average content of selenium in different soil parent materials is arranged in decreasing order of alluvial deposits>alluvial deposits>granite>sedimentary rocks>basic-neutral volcanic rocks; the average content of selenium in different soil types in arranged in decreasing order of albic soil>meadow soil>black soil>marshy soil>dark brown soil>paddy soil; the average content of selenium in different land use is arranged in decreasing order of irrigated farmland>dry farmland>grassland>construction land>unused land>forest land. Correlation analysis shows that soil organic carbon (TOC) and pH are the main factors affecting the selenium content in the surface soil of the study area.
王月平, 张立, 崔玉军, 吕石佳. 宝清县东部土壤硒含量特征及其与土壤性质的关系[J]. 物探与化探, 2019, 43(4): 904-911.
Yue-Ping WANG, Li ZHANG, Yu-Jun CUI, Shi-Jia LYU. Characteristics of selenium content in soil of eastern Baoqing County and its relationship with soil properties. Geophysical and Geochemical Exploration, 2019, 43(4): 904-911.
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