青海柴达木盆地绿洲农业区硒地球化学特征——以诺木洪绿洲为例
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姬丙艳, 沈骁, 姚振, 田滔, 马风娟, 邱瑜
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Geochemical characteristics of selenium in the oasis agricultural area of Qaidam Basin, Qinghai Province:Exemplified by Nomhon oasis
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Bing-Yan JI, Xiao SHEN, Zhen YAO, Tao TIAN, Feng-Juan MA, Yu QIU
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表2 诺木洪富硒林草地主要元素含量与全国土壤背景值对比
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Table 2 comparison between the content of main elements in selenium-enriched Forest and grassland in Nomhon and the national background value of soil
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指标 | 背景值 | 标准 离差 | 变异 系数 | 全国 背景[16] | 比值 | 指标 | 背景值 | 标准 离差 | 变异 系数 | 全国 背景[16] | 比值 | Al2O3 | 9.02 | 1.56 | 0.17 | 6.62 | 1.36 | Cd | 120.7 | 31.3 | 0.26 | 97 | 1.24 | CaO | 9.86 | 2.93 | 0.30 | 1.54 | 6.40 | F | 632.3 | 194.5 | 0.31 | 478 | 1.32 | Fe2O3 | 3.25 | 0.62 | 0.19 | 2.94 | 1.11 | Ge | 0.86 | 0.16 | 0.19 | 1.7 | 0.51 | K2O | 1.75 | 0.39 | 0.23 | 1.86 | 0.94 | Hg | 19.23 | 5.73 | 0.30 | 65 | 0.30 | MgO | 5.36 | 1.50 | 0.28 | 0.78 | 6.87 | I | 1.15 | 0.58 | 0.51 | 3.76 | 0.31 | Na2O | 5.54 | 3.22 | 0.58 | 1.02 | 5.43 | Mn | 403.9 | 86.8 | 0.21 | 583 | 0.69 | SiO2 | 40.84 | 6.68 | 0.16 | 59.9 | 0.68 | Mo | 2.29 | 1.08 | 0.47 | 2 | 1.15 | 有机质 | 1.73 | 0.73 | 0.42 | | | N | 649.9 | 286 | 0.44 | 625.6 | 1.04 | pH | 8.53 | 0.27 | 0.03 | 6.7 | 1.27 | P | 602.8 | 101.5 | 0.17 | 836.1 | 0.72 | As | 10.91 | 2.15 | 0.20 | 11.2 | 0.97 | S | 23955 | 17418 | 0.73 | 287.93 | 83.2 | B | 119.7 | 47.2 | 0.39 | 47.8 | 2.50 | Se | 0.40 | 0.16 | 0.41 | 0.29 | 1.38 | C | 2.25 | 1.07 | 0.47 | | | Sr | 928.2 | 608.6 | 0.66 | 167 | 5.56 | Cl | 35863 | 26513 | 0.74 | 68 | 527.4 | Pb | 17.90 | 2.48 | 0.14 | 26 | 0.69 | Cu | 19.54 | 3.81 | 0.19 | 22.6 | 0.86 | Zn | 54.50 | 9.96 | 0.18 | 74.2 | 0.73 |
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