The acid-base properties and Se background values of the soil in Qinghai Province were obtained by analyzing the pH and Se content of the soil based on the data derived from the geochemical survey of land quality conducted in Qinghai Province. The Se enrichment models of root soil and crops such as wheat, rapeseed, pea, garlic, and forage were established accordingly. The recommended values of Se-rich soil in Qinghai were calculated by combining the recommended in take of Se in the population with the standard value of Se content in Se-rich agricultural and livestock products in Qinghai Province. It is recommended that the lower limit of Se-rich soil for alkaline soil and neutral and acidic soil in Qinghai Province should be 0.23×10-6 and 0.25×10-6, respectively. This study is greatly significant for the formulation of the local standards for Se-rich soil in Qinghai Province and for guiding the development of the selenium industry.
Li J X, Zhang G D, Ge X L, et al. Prediction and geochemical environmental chatacter of human selenium imbalances[M]. Beijing: Geological Publishing House, 2000.
Zhang L S, Zhu Y, Ke F, et al. Study on relations between Kaschin-back disease and content of selenium bounded byhumic acids in Northest China[J]. Journal of Applied Ecology, 1990, 1(4): 333-337.
Zhao S H, Yu W T, Zhang L, et al. Biogeochemical cycling of selenium nutrition adjustment and differentiation canuse in environment[J]. Chinese Journal of Ecology, 2005, 24(10): 1197-1203.
Ministry of Land and Resources China Geological Survey. Survey report on geochemistry of cultivated land in China(2015)[R]. Beijing: Ministry of Land and Resources China Geological Survey, 2015.
China Selenium-rich Agricultural Industry Technology Innovation Alliance. China’s selenium-rich agricultural development blue book[M]. Beijing: China Agricultural University Press, 2016.
[11]
自然资源部中国地质调查局. DD2019-10 天然富硒土地划定与标识(试行)[S]. 2019.
[11]
China Geological Survey, Ministry of Natural Resources. DD2019-10 Delimitation and the logo for natural selenium-enriched land[S]. 2016.
[12]
黑龙江省质量技术监督局. DB23/T 2071—2018 富硒土壤评价要求[S]. 2018.
[12]
The Quality and Technology Supervision Bureauc of Heilongjiang Province. DB23/T 2071—2018 Assessment requirements for selenium enriched soil[S]. 2018.
[13]
河南省市场监督管理局. DB41/T 1871—2019富硒土壤硒含量要求[S]. 2019.
[13]
The Quality and Technology Supervision Bureauc of Henan Province. DB41/T 1871—2019 Selenium content requirements in selenium-rich soils[S]. 2019.
The Quality and Technology Supervision Bureauc of Ningxia Province. DB64/T 1220—2016 Seleium-enriched soil standards of Ningxia[S]. 2016.
[15]
河北省市场监督管理局. DB13/T 5318—2020天然富硒土地判定要求[S]. 2020.
[15]
The Quality and Technology Supervision Bureauc of Hebei Province. DB13/T 5318—2020 The determination requirements for natural selenium-enriched land[S]. 2020.
Zhang Y F, Miao G W, Ma Q, et al. Distribution characteristics of Se speciation of alkaline soil in eastern Qinghai[J]. Geophysical and Geochemical Exploration, 2019, 43(5): 1138-1144.
Lang C Y, Huang X L, Li X J. Distribution of selenium species in rice paddy soils of east suburb in Chengdu[J]. Southwest China Journal of Agricultural Sciences, 2013, 26(2): 642-646.
Li Y G, Xu J, Li Y, et al. The modes of occurrence of selenium in selenium-rich soil of Zhejiang Province[J]. Geophysical and Geochemical Exploration, 2007, 31(2): 95-109.
[23]
青海省标准化协会. T/QAS 011—2020青海省农产品硒含量分类标准[S]. 2019.
[23]
Qinghai Provincial Standardization Association. T/QAS 011—2020 The classification standard of selenium content of agricultural products in Qinghai Province[S]. 2019.
Cheng X M, Ma R R, Peng M, et al. Characteristics of selenium in crops and roots in China and recommendations for selenium-enriched soil standards[J]. Geophysical and Geochemical Exploration, 2019, 43(6): 1367-1372.
Shi Z L, Jin L X, Liao C, et al. Content characteristics and genesis of soil selenium in important cultivated areas of Leibo County, Sichuan Province[J]. Geophysical and Geochemical Exploration, 2020, 44(5): 1253-1260.
Li Y H, Wang W Y, Yang L S, et al. Concentration and environmental significance of water soluble-Se and water soluble-F in soils of south Shanxi province[J]. Environmental Chemistry, 2005, 24(3): 279-283.
Ma Q, Ji B Y, Zhang Y F, et al. Geochemical characteristics of selenium in soils and organisms in the east of Qinghai Province[J]. Advances in Earth Science, 2012, 27(10): 1148-1152.
Wang H Y, Zeng D M, Guo Z J, et al. Selenium threshold for the delimitation of natural selenium-enriched land[J]. Environmental Science, 2021, 42(1): 333-342.